` will generate:\n *\n * Render3:\n * ```\n * const pd_b:any = ((ctx.doSomething($event)) !== false);\n * return pd_b;\n * ```\n *\n * but render2 expects:\n * ```\n * return ctx.doSomething($event);\n * ```\n */\n // TODO(misko): remove this hack once we no longer support ViewEngine.\n this.render3Stmts = stmts.map((statement) => {\n if (statement instanceof DeclareVarStmt && statement.name == allowDefault.name &&\n statement.value instanceof BinaryOperatorExpr) {\n const lhs = statement.value.lhs;\n return new ReturnStatement(lhs.value);\n }\n return statement;\n });\n }\n}\n/**\n * Converts the given expression AST into an executable output AST, assuming the expression is\n * used in an action binding (e.g. an event handler).\n */\nfunction convertActionBinding(localResolver, implicitReceiver, action, bindingId, interpolationFunction, baseSourceSpan, implicitReceiverAccesses) {\n if (!localResolver) {\n localResolver = new DefaultLocalResolver();\n }\n const actionWithoutBuiltins = convertPropertyBindingBuiltins({\n createLiteralArrayConverter: (argCount) => {\n // Note: no caching for literal arrays in actions.\n return (args) => literalArr(args);\n },\n createLiteralMapConverter: (keys) => {\n // Note: no caching for literal maps in actions.\n return (values) => {\n const entries = keys.map((k, i) => ({\n key: k.key,\n value: values[i],\n quoted: k.quoted,\n }));\n return literalMap(entries);\n };\n },\n createPipeConverter: (name) => {\n throw new Error(`Illegal State: Actions are not allowed to contain pipes. Pipe: ${name}`);\n }\n }, action);\n const visitor = new _AstToIrVisitor(localResolver, implicitReceiver, bindingId, interpolationFunction, baseSourceSpan, implicitReceiverAccesses);\n const actionStmts = [];\n flattenStatements(actionWithoutBuiltins.visit(visitor, _Mode.Statement), actionStmts);\n prependTemporaryDecls(visitor.temporaryCount, bindingId, actionStmts);\n if (visitor.usesImplicitReceiver) {\n localResolver.notifyImplicitReceiverUse();\n }\n const lastIndex = actionStmts.length - 1;\n let preventDefaultVar = null;\n if (lastIndex >= 0) {\n const lastStatement = actionStmts[lastIndex];\n const returnExpr = convertStmtIntoExpression(lastStatement);\n if (returnExpr) {\n // Note: We need to cast the result of the method call to dynamic,\n // as it might be a void method!\n preventDefaultVar = createPreventDefaultVar(bindingId);\n actionStmts[lastIndex] =\n preventDefaultVar.set(returnExpr.cast(DYNAMIC_TYPE).notIdentical(literal(false)))\n .toDeclStmt(null, [StmtModifier.Final]);\n }\n }\n return new ConvertActionBindingResult(actionStmts, preventDefaultVar);\n}\nfunction convertPropertyBindingBuiltins(converterFactory, ast) {\n return convertBuiltins(converterFactory, ast);\n}\nclass ConvertPropertyBindingResult {\n constructor(stmts, currValExpr) {\n this.stmts = stmts;\n this.currValExpr = currValExpr;\n }\n}\nvar BindingForm;\n(function (BindingForm) {\n // The general form of binding expression, supports all expressions.\n BindingForm[BindingForm[\"General\"] = 0] = \"General\";\n // Try to generate a simple binding (no temporaries or statements)\n // otherwise generate a general binding\n BindingForm[BindingForm[\"TrySimple\"] = 1] = \"TrySimple\";\n // Inlines assignment of temporaries into the generated expression. The result may still\n // have statements attached for declarations of temporary variables.\n // This is the only relevant form for Ivy, the other forms are only used in ViewEngine.\n BindingForm[BindingForm[\"Expression\"] = 2] = \"Expression\";\n})(BindingForm || (BindingForm = {}));\n/**\n * Converts the given expression AST into an executable output AST, assuming the expression\n * is used in property binding. The expression has to be preprocessed via\n * `convertPropertyBindingBuiltins`.\n */\nfunction convertPropertyBinding(localResolver, implicitReceiver, expressionWithoutBuiltins, bindingId, form, interpolationFunction) {\n if (!localResolver) {\n localResolver = new DefaultLocalResolver();\n }\n const visitor = new _AstToIrVisitor(localResolver, implicitReceiver, bindingId, interpolationFunction);\n const outputExpr = expressionWithoutBuiltins.visit(visitor, _Mode.Expression);\n const stmts = getStatementsFromVisitor(visitor, bindingId);\n if (visitor.usesImplicitReceiver) {\n localResolver.notifyImplicitReceiverUse();\n }\n if (visitor.temporaryCount === 0 && form == BindingForm.TrySimple) {\n return new ConvertPropertyBindingResult([], outputExpr);\n }\n else if (form === BindingForm.Expression) {\n return new ConvertPropertyBindingResult(stmts, outputExpr);\n }\n const currValExpr = createCurrValueExpr(bindingId);\n stmts.push(currValExpr.set(outputExpr).toDeclStmt(DYNAMIC_TYPE, [StmtModifier.Final]));\n return new ConvertPropertyBindingResult(stmts, currValExpr);\n}\n/**\n * Given some expression, such as a binding or interpolation expression, and a context expression to\n * look values up on, visit each facet of the given expression resolving values from the context\n * expression such that a list of arguments can be derived from the found values that can be used as\n * arguments to an external update instruction.\n *\n * @param localResolver The resolver to use to look up expressions by name appropriately\n * @param contextVariableExpression The expression representing the context variable used to create\n * the final argument expressions\n * @param expressionWithArgumentsToExtract The expression to visit to figure out what values need to\n * be resolved and what arguments list to build.\n * @param bindingId A name prefix used to create temporary variable names if they're needed for the\n * arguments generated\n * @returns An array of expressions that can be passed as arguments to instruction expressions like\n * `o.importExpr(R3.propertyInterpolate).callFn(result)`\n */\nfunction convertUpdateArguments(localResolver, contextVariableExpression, expressionWithArgumentsToExtract, bindingId) {\n const visitor = new _AstToIrVisitor(localResolver, contextVariableExpression, bindingId, undefined);\n const outputExpr = expressionWithArgumentsToExtract.visit(visitor, _Mode.Expression);\n if (visitor.usesImplicitReceiver) {\n localResolver.notifyImplicitReceiverUse();\n }\n const stmts = getStatementsFromVisitor(visitor, bindingId);\n // Removing the first argument, because it was a length for ViewEngine, not Ivy.\n let args = outputExpr.args.slice(1);\n if (expressionWithArgumentsToExtract instanceof Interpolation) {\n // If we're dealing with an interpolation of 1 value with an empty prefix and suffix, reduce the\n // args returned to just the value, because we're going to pass it to a special instruction.\n const strings = expressionWithArgumentsToExtract.strings;\n if (args.length === 3 && strings[0] === '' && strings[1] === '') {\n // Single argument interpolate instructions.\n args = [args[1]];\n }\n else if (args.length >= 19) {\n // 19 or more arguments must be passed to the `interpolateV`-style instructions, which accept\n // an array of arguments\n args = [literalArr(args)];\n }\n }\n return { stmts, args };\n}\nfunction getStatementsFromVisitor(visitor, bindingId) {\n const stmts = [];\n for (let i = 0; i < visitor.temporaryCount; i++) {\n stmts.push(temporaryDeclaration(bindingId, i));\n }\n return stmts;\n}\nfunction convertBuiltins(converterFactory, ast) {\n const visitor = new _BuiltinAstConverter(converterFactory);\n return ast.visit(visitor);\n}\nfunction temporaryName(bindingId, temporaryNumber) {\n return `tmp_${bindingId}_${temporaryNumber}`;\n}\nfunction temporaryDeclaration(bindingId, temporaryNumber) {\n return new DeclareVarStmt(temporaryName(bindingId, temporaryNumber), NULL_EXPR);\n}\nfunction prependTemporaryDecls(temporaryCount, bindingId, statements) {\n for (let i = temporaryCount - 1; i >= 0; i--) {\n statements.unshift(temporaryDeclaration(bindingId, i));\n }\n}\nvar _Mode;\n(function (_Mode) {\n _Mode[_Mode[\"Statement\"] = 0] = \"Statement\";\n _Mode[_Mode[\"Expression\"] = 1] = \"Expression\";\n})(_Mode || (_Mode = {}));\nfunction ensureStatementMode(mode, ast) {\n if (mode !== _Mode.Statement) {\n throw new Error(`Expected a statement, but saw ${ast}`);\n }\n}\nfunction ensureExpressionMode(mode, ast) {\n if (mode !== _Mode.Expression) {\n throw new Error(`Expected an expression, but saw ${ast}`);\n }\n}\nfunction convertToStatementIfNeeded(mode, expr) {\n if (mode === _Mode.Statement) {\n return expr.toStmt();\n }\n else {\n return expr;\n }\n}\nclass _BuiltinAstConverter extends AstTransformer$1 {\n constructor(_converterFactory) {\n super();\n this._converterFactory = _converterFactory;\n }\n visitPipe(ast, context) {\n const args = [ast.exp, ...ast.args].map(ast => ast.visit(this, context));\n return new BuiltinFunctionCall(ast.span, ast.sourceSpan, args, this._converterFactory.createPipeConverter(ast.name, args.length));\n }\n visitLiteralArray(ast, context) {\n const args = ast.expressions.map(ast => ast.visit(this, context));\n return new BuiltinFunctionCall(ast.span, ast.sourceSpan, args, this._converterFactory.createLiteralArrayConverter(ast.expressions.length));\n }\n visitLiteralMap(ast, context) {\n const args = ast.values.map(ast => ast.visit(this, context));\n return new BuiltinFunctionCall(ast.span, ast.sourceSpan, args, this._converterFactory.createLiteralMapConverter(ast.keys));\n }\n}\nclass _AstToIrVisitor {\n constructor(_localResolver, _implicitReceiver, bindingId, interpolationFunction, baseSourceSpan, implicitReceiverAccesses) {\n this._localResolver = _localResolver;\n this._implicitReceiver = _implicitReceiver;\n this.bindingId = bindingId;\n this.interpolationFunction = interpolationFunction;\n this.baseSourceSpan = baseSourceSpan;\n this.implicitReceiverAccesses = implicitReceiverAccesses;\n this._nodeMap = new Map();\n this._resultMap = new Map();\n this._currentTemporary = 0;\n this.temporaryCount = 0;\n this.usesImplicitReceiver = false;\n }\n visitUnary(ast, mode) {\n let op;\n switch (ast.operator) {\n case '+':\n op = UnaryOperator.Plus;\n break;\n case '-':\n op = UnaryOperator.Minus;\n break;\n default:\n throw new Error(`Unsupported operator ${ast.operator}`);\n }\n return convertToStatementIfNeeded(mode, new UnaryOperatorExpr(op, this._visit(ast.expr, _Mode.Expression), undefined, this.convertSourceSpan(ast.span)));\n }\n visitBinary(ast, mode) {\n let op;\n switch (ast.operation) {\n case '+':\n op = BinaryOperator.Plus;\n break;\n case '-':\n op = BinaryOperator.Minus;\n break;\n case '*':\n op = BinaryOperator.Multiply;\n break;\n case '/':\n op = BinaryOperator.Divide;\n break;\n case '%':\n op = BinaryOperator.Modulo;\n break;\n case '&&':\n op = BinaryOperator.And;\n break;\n case '||':\n op = BinaryOperator.Or;\n break;\n case '==':\n op = BinaryOperator.Equals;\n break;\n case '!=':\n op = BinaryOperator.NotEquals;\n break;\n case '===':\n op = BinaryOperator.Identical;\n break;\n case '!==':\n op = BinaryOperator.NotIdentical;\n break;\n case '<':\n op = BinaryOperator.Lower;\n break;\n case '>':\n op = BinaryOperator.Bigger;\n break;\n case '<=':\n op = BinaryOperator.LowerEquals;\n break;\n case '>=':\n op = BinaryOperator.BiggerEquals;\n break;\n default:\n throw new Error(`Unsupported operation ${ast.operation}`);\n }\n return convertToStatementIfNeeded(mode, new BinaryOperatorExpr(op, this._visit(ast.left, _Mode.Expression), this._visit(ast.right, _Mode.Expression), undefined, this.convertSourceSpan(ast.span)));\n }\n visitChain(ast, mode) {\n ensureStatementMode(mode, ast);\n return this.visitAll(ast.expressions, mode);\n }\n visitConditional(ast, mode) {\n const value = this._visit(ast.condition, _Mode.Expression);\n return convertToStatementIfNeeded(mode, value.conditional(this._visit(ast.trueExp, _Mode.Expression), this._visit(ast.falseExp, _Mode.Expression), this.convertSourceSpan(ast.span)));\n }\n visitPipe(ast, mode) {\n throw new Error(`Illegal state: Pipes should have been converted into functions. Pipe: ${ast.name}`);\n }\n visitFunctionCall(ast, mode) {\n const convertedArgs = this.visitAll(ast.args, _Mode.Expression);\n let fnResult;\n if (ast instanceof BuiltinFunctionCall) {\n fnResult = ast.converter(convertedArgs);\n }\n else {\n fnResult = this._visit(ast.target, _Mode.Expression)\n .callFn(convertedArgs, this.convertSourceSpan(ast.span));\n }\n return convertToStatementIfNeeded(mode, fnResult);\n }\n visitImplicitReceiver(ast, mode) {\n ensureExpressionMode(mode, ast);\n this.usesImplicitReceiver = true;\n return this._implicitReceiver;\n }\n visitInterpolation(ast, mode) {\n ensureExpressionMode(mode, ast);\n const args = [literal(ast.expressions.length)];\n for (let i = 0; i < ast.strings.length - 1; i++) {\n args.push(literal(ast.strings[i]));\n args.push(this._visit(ast.expressions[i], _Mode.Expression));\n }\n args.push(literal(ast.strings[ast.strings.length - 1]));\n if (this.interpolationFunction) {\n return this.interpolationFunction(args);\n }\n return ast.expressions.length <= 9 ?\n importExpr(Identifiers.inlineInterpolate).callFn(args) :\n importExpr(Identifiers.interpolate).callFn([\n args[0], literalArr(args.slice(1), undefined, this.convertSourceSpan(ast.span))\n ]);\n }\n visitKeyedRead(ast, mode) {\n const leftMostSafe = this.leftMostSafeNode(ast);\n if (leftMostSafe) {\n return this.convertSafeAccess(ast, leftMostSafe, mode);\n }\n else {\n return convertToStatementIfNeeded(mode, this._visit(ast.obj, _Mode.Expression).key(this._visit(ast.key, _Mode.Expression)));\n }\n }\n visitKeyedWrite(ast, mode) {\n const obj = this._visit(ast.obj, _Mode.Expression);\n const key = this._visit(ast.key, _Mode.Expression);\n const value = this._visit(ast.value, _Mode.Expression);\n return convertToStatementIfNeeded(mode, obj.key(key).set(value));\n }\n visitLiteralArray(ast, mode) {\n throw new Error(`Illegal State: literal arrays should have been converted into functions`);\n }\n visitLiteralMap(ast, mode) {\n throw new Error(`Illegal State: literal maps should have been converted into functions`);\n }\n visitLiteralPrimitive(ast, mode) {\n // For literal values of null, undefined, true, or false allow type interference\n // to infer the type.\n const type = ast.value === null || ast.value === undefined || ast.value === true || ast.value === true ?\n INFERRED_TYPE :\n undefined;\n return convertToStatementIfNeeded(mode, literal(ast.value, type, this.convertSourceSpan(ast.span)));\n }\n _getLocal(name) {\n return this._localResolver.getLocal(name);\n }\n visitMethodCall(ast, mode) {\n if (ast.receiver instanceof ImplicitReceiver && ast.name == '$any') {\n const args = this.visitAll(ast.args, _Mode.Expression);\n if (args.length != 1) {\n throw new Error(`Invalid call to $any, expected 1 argument but received ${args.length || 'none'}`);\n }\n return args[0].cast(DYNAMIC_TYPE, this.convertSourceSpan(ast.span));\n }\n const leftMostSafe = this.leftMostSafeNode(ast);\n if (leftMostSafe) {\n return this.convertSafeAccess(ast, leftMostSafe, mode);\n }\n else {\n const args = this.visitAll(ast.args, _Mode.Expression);\n const prevUsesImplicitReceiver = this.usesImplicitReceiver;\n let result = null;\n const receiver = this._visit(ast.receiver, _Mode.Expression);\n if (receiver === this._implicitReceiver) {\n const varExpr = this._getLocal(ast.name);\n if (varExpr) {\n // Restore the previous \"usesImplicitReceiver\" state since the implicit\n // receiver has been replaced with a resolved local expression.\n this.usesImplicitReceiver = prevUsesImplicitReceiver;\n result = varExpr.callFn(args);\n }\n this.addImplicitReceiverAccess(ast.name);\n }\n if (result == null) {\n result = receiver.callMethod(ast.name, args, this.convertSourceSpan(ast.span));\n }\n return convertToStatementIfNeeded(mode, result);\n }\n }\n visitPrefixNot(ast, mode) {\n return convertToStatementIfNeeded(mode, not(this._visit(ast.expression, _Mode.Expression)));\n }\n visitNonNullAssert(ast, mode) {\n return convertToStatementIfNeeded(mode, assertNotNull(this._visit(ast.expression, _Mode.Expression)));\n }\n visitPropertyRead(ast, mode) {\n const leftMostSafe = this.leftMostSafeNode(ast);\n if (leftMostSafe) {\n return this.convertSafeAccess(ast, leftMostSafe, mode);\n }\n else {\n let result = null;\n const prevUsesImplicitReceiver = this.usesImplicitReceiver;\n const receiver = this._visit(ast.receiver, _Mode.Expression);\n if (receiver === this._implicitReceiver) {\n result = this._getLocal(ast.name);\n if (result) {\n // Restore the previous \"usesImplicitReceiver\" state since the implicit\n // receiver has been replaced with a resolved local expression.\n this.usesImplicitReceiver = prevUsesImplicitReceiver;\n }\n this.addImplicitReceiverAccess(ast.name);\n }\n if (result == null) {\n result = receiver.prop(ast.name);\n }\n return convertToStatementIfNeeded(mode, result);\n }\n }\n visitPropertyWrite(ast, mode) {\n const receiver = this._visit(ast.receiver, _Mode.Expression);\n const prevUsesImplicitReceiver = this.usesImplicitReceiver;\n let varExpr = null;\n if (receiver === this._implicitReceiver) {\n const localExpr = this._getLocal(ast.name);\n if (localExpr) {\n if (localExpr instanceof ReadPropExpr) {\n // If the local variable is a property read expression, it's a reference\n // to a 'context.property' value and will be used as the target of the\n // write expression.\n varExpr = localExpr;\n // Restore the previous \"usesImplicitReceiver\" state since the implicit\n // receiver has been replaced with a resolved local expression.\n this.usesImplicitReceiver = prevUsesImplicitReceiver;\n this.addImplicitReceiverAccess(ast.name);\n }\n else {\n // Otherwise it's an error.\n const receiver = ast.name;\n const value = (ast.value instanceof PropertyRead) ? ast.value.name : undefined;\n throw new Error(`Cannot assign value \"${value}\" to template variable \"${receiver}\". Template variables are read-only.`);\n }\n }\n }\n // If no local expression could be produced, use the original receiver's\n // property as the target.\n if (varExpr === null) {\n varExpr = receiver.prop(ast.name);\n }\n return convertToStatementIfNeeded(mode, varExpr.set(this._visit(ast.value, _Mode.Expression)));\n }\n visitSafePropertyRead(ast, mode) {\n return this.convertSafeAccess(ast, this.leftMostSafeNode(ast), mode);\n }\n visitSafeMethodCall(ast, mode) {\n return this.convertSafeAccess(ast, this.leftMostSafeNode(ast), mode);\n }\n visitAll(asts, mode) {\n return asts.map(ast => this._visit(ast, mode));\n }\n visitQuote(ast, mode) {\n throw new Error(`Quotes are not supported for evaluation!\n Statement: ${ast.uninterpretedExpression} located at ${ast.location}`);\n }\n _visit(ast, mode) {\n const result = this._resultMap.get(ast);\n if (result)\n return result;\n return (this._nodeMap.get(ast) || ast).visit(this, mode);\n }\n convertSafeAccess(ast, leftMostSafe, mode) {\n // If the expression contains a safe access node on the left it needs to be converted to\n // an expression that guards the access to the member by checking the receiver for blank. As\n // execution proceeds from left to right, the left most part of the expression must be guarded\n // first but, because member access is left associative, the right side of the expression is at\n // the top of the AST. The desired result requires lifting a copy of the left part of the\n // expression up to test it for blank before generating the unguarded version.\n // Consider, for example the following expression: a?.b.c?.d.e\n // This results in the ast:\n // .\n // / \\\n // ?. e\n // / \\\n // . d\n // / \\\n // ?. c\n // / \\\n // a b\n // The following tree should be generated:\n //\n // /---- ? ----\\\n // / | \\\n // a /--- ? ---\\ null\n // / | \\\n // . . null\n // / \\ / \\\n // . c . e\n // / \\ / \\\n // a b . d\n // / \\\n // . c\n // / \\\n // a b\n //\n // Notice that the first guard condition is the left hand of the left most safe access node\n // which comes in as leftMostSafe to this routine.\n let guardedExpression = this._visit(leftMostSafe.receiver, _Mode.Expression);\n let temporary = undefined;\n if (this.needsTemporary(leftMostSafe.receiver)) {\n // If the expression has method calls or pipes then we need to save the result into a\n // temporary variable to avoid calling stateful or impure code more than once.\n temporary = this.allocateTemporary();\n // Preserve the result in the temporary variable\n guardedExpression = temporary.set(guardedExpression);\n // Ensure all further references to the guarded expression refer to the temporary instead.\n this._resultMap.set(leftMostSafe.receiver, temporary);\n }\n const condition = guardedExpression.isBlank();\n // Convert the ast to an unguarded access to the receiver's member. The map will substitute\n // leftMostNode with its unguarded version in the call to `this.visit()`.\n if (leftMostSafe instanceof SafeMethodCall) {\n this._nodeMap.set(leftMostSafe, new MethodCall(leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.nameSpan, leftMostSafe.receiver, leftMostSafe.name, leftMostSafe.args));\n }\n else {\n this._nodeMap.set(leftMostSafe, new PropertyRead(leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.nameSpan, leftMostSafe.receiver, leftMostSafe.name));\n }\n // Recursively convert the node now without the guarded member access.\n const access = this._visit(ast, _Mode.Expression);\n // Remove the mapping. This is not strictly required as the converter only traverses each node\n // once but is safer if the conversion is changed to traverse the nodes more than once.\n this._nodeMap.delete(leftMostSafe);\n // If we allocated a temporary, release it.\n if (temporary) {\n this.releaseTemporary(temporary);\n }\n // Produce the conditional\n return convertToStatementIfNeeded(mode, condition.conditional(literal(null), access));\n }\n // Given an expression of the form a?.b.c?.d.e then the left most safe node is\n // the (a?.b). The . and ?. are left associative thus can be rewritten as:\n // ((((a?.c).b).c)?.d).e. This returns the most deeply nested safe read or\n // safe method call as this needs to be transformed initially to:\n // a == null ? null : a.c.b.c?.d.e\n // then to:\n // a == null ? null : a.b.c == null ? null : a.b.c.d.e\n leftMostSafeNode(ast) {\n const visit = (visitor, ast) => {\n return (this._nodeMap.get(ast) || ast).visit(visitor);\n };\n return ast.visit({\n visitUnary(ast) {\n return null;\n },\n visitBinary(ast) {\n return null;\n },\n visitChain(ast) {\n return null;\n },\n visitConditional(ast) {\n return null;\n },\n visitFunctionCall(ast) {\n return null;\n },\n visitImplicitReceiver(ast) {\n return null;\n },\n visitInterpolation(ast) {\n return null;\n },\n visitKeyedRead(ast) {\n return visit(this, ast.obj);\n },\n visitKeyedWrite(ast) {\n return null;\n },\n visitLiteralArray(ast) {\n return null;\n },\n visitLiteralMap(ast) {\n return null;\n },\n visitLiteralPrimitive(ast) {\n return null;\n },\n visitMethodCall(ast) {\n return visit(this, ast.receiver);\n },\n visitPipe(ast) {\n return null;\n },\n visitPrefixNot(ast) {\n return null;\n },\n visitNonNullAssert(ast) {\n return null;\n },\n visitPropertyRead(ast) {\n return visit(this, ast.receiver);\n },\n visitPropertyWrite(ast) {\n return null;\n },\n visitQuote(ast) {\n return null;\n },\n visitSafeMethodCall(ast) {\n return visit(this, ast.receiver) || ast;\n },\n visitSafePropertyRead(ast) {\n return visit(this, ast.receiver) || ast;\n }\n });\n }\n // Returns true of the AST includes a method or a pipe indicating that, if the\n // expression is used as the target of a safe property or method access then\n // the expression should be stored into a temporary variable.\n needsTemporary(ast) {\n const visit = (visitor, ast) => {\n return ast && (this._nodeMap.get(ast) || ast).visit(visitor);\n };\n const visitSome = (visitor, ast) => {\n return ast.some(ast => visit(visitor, ast));\n };\n return ast.visit({\n visitUnary(ast) {\n return visit(this, ast.expr);\n },\n visitBinary(ast) {\n return visit(this, ast.left) || visit(this, ast.right);\n },\n visitChain(ast) {\n return false;\n },\n visitConditional(ast) {\n return visit(this, ast.condition) || visit(this, ast.trueExp) || visit(this, ast.falseExp);\n },\n visitFunctionCall(ast) {\n return true;\n },\n visitImplicitReceiver(ast) {\n return false;\n },\n visitInterpolation(ast) {\n return visitSome(this, ast.expressions);\n },\n visitKeyedRead(ast) {\n return false;\n },\n visitKeyedWrite(ast) {\n return false;\n },\n visitLiteralArray(ast) {\n return true;\n },\n visitLiteralMap(ast) {\n return true;\n },\n visitLiteralPrimitive(ast) {\n return false;\n },\n visitMethodCall(ast) {\n return true;\n },\n visitPipe(ast) {\n return true;\n },\n visitPrefixNot(ast) {\n return visit(this, ast.expression);\n },\n visitNonNullAssert(ast) {\n return visit(this, ast.expression);\n },\n visitPropertyRead(ast) {\n return false;\n },\n visitPropertyWrite(ast) {\n return false;\n },\n visitQuote(ast) {\n return false;\n },\n visitSafeMethodCall(ast) {\n return true;\n },\n visitSafePropertyRead(ast) {\n return false;\n }\n });\n }\n allocateTemporary() {\n const tempNumber = this._currentTemporary++;\n this.temporaryCount = Math.max(this._currentTemporary, this.temporaryCount);\n return new ReadVarExpr(temporaryName(this.bindingId, tempNumber));\n }\n releaseTemporary(temporary) {\n this._currentTemporary--;\n if (temporary.name != temporaryName(this.bindingId, this._currentTemporary)) {\n throw new Error(`Temporary ${temporary.name} released out of order`);\n }\n }\n /**\n * Creates an absolute `ParseSourceSpan` from the relative `ParseSpan`.\n *\n * `ParseSpan` objects are relative to the start of the expression.\n * This method converts these to full `ParseSourceSpan` objects that\n * show where the span is within the overall source file.\n *\n * @param span the relative span to convert.\n * @returns a `ParseSourceSpan` for the given span or null if no\n * `baseSourceSpan` was provided to this class.\n */\n convertSourceSpan(span) {\n if (this.baseSourceSpan) {\n const start = this.baseSourceSpan.start.moveBy(span.start);\n const end = this.baseSourceSpan.start.moveBy(span.end);\n return new ParseSourceSpan(start, end);\n }\n else {\n return null;\n }\n }\n /** Adds the name of an AST to the list of implicit receiver accesses. */\n addImplicitReceiverAccess(name) {\n if (this.implicitReceiverAccesses) {\n this.implicitReceiverAccesses.add(name);\n }\n }\n}\nfunction flattenStatements(arg, output) {\n if (Array.isArray(arg)) {\n arg.forEach((entry) => flattenStatements(entry, output));\n }\n else {\n output.push(arg);\n }\n}\nclass DefaultLocalResolver {\n notifyImplicitReceiverUse() { }\n getLocal(name) {\n if (name === EventHandlerVars.event.name) {\n return EventHandlerVars.event;\n }\n return null;\n }\n}\nfunction createCurrValueExpr(bindingId) {\n return variable(`currVal_${bindingId}`); // fix syntax highlighting: `\n}\nfunction createPreventDefaultVar(bindingId) {\n return variable(`pd_${bindingId}`);\n}\nfunction convertStmtIntoExpression(stmt) {\n if (stmt instanceof ExpressionStatement) {\n return stmt.expr;\n }\n else if (stmt instanceof ReturnStatement) {\n return stmt.value;\n }\n return null;\n}\nclass BuiltinFunctionCall extends FunctionCall {\n constructor(span, sourceSpan, args, converter) {\n super(span, sourceSpan, null, args);\n this.args = args;\n this.converter = converter;\n }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * This file is a port of shadowCSS from webcomponents.js to TypeScript.\n *\n * Please make sure to keep to edits in sync with the source file.\n *\n * Source:\n * https://github.com/webcomponents/webcomponentsjs/blob/4efecd7e0e/src/ShadowCSS/ShadowCSS.js\n *\n * The original file level comment is reproduced below\n */\n/*\n This is a limited shim for ShadowDOM css styling.\n https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#styles\n\n The intention here is to support only the styling features which can be\n relatively simply implemented. The goal is to allow users to avoid the\n most obvious pitfalls and do so without compromising performance significantly.\n For ShadowDOM styling that's not covered here, a set of best practices\n can be provided that should allow users to accomplish more complex styling.\n\n The following is a list of specific ShadowDOM styling features and a brief\n discussion of the approach used to shim.\n\n Shimmed features:\n\n * :host, :host-context: ShadowDOM allows styling of the shadowRoot's host\n element using the :host rule. To shim this feature, the :host styles are\n reformatted and prefixed with a given scope name and promoted to a\n document level stylesheet.\n For example, given a scope name of .foo, a rule like this:\n\n :host {\n background: red;\n }\n }\n\n becomes:\n\n .foo {\n background: red;\n }\n\n * encapsulation: Styles defined within ShadowDOM, apply only to\n dom inside the ShadowDOM. Polymer uses one of two techniques to implement\n this feature.\n\n By default, rules are prefixed with the host element tag name\n as a descendant selector. This ensures styling does not leak out of the 'top'\n of the element's ShadowDOM. For example,\n\n div {\n font-weight: bold;\n }\n\n becomes:\n\n x-foo div {\n font-weight: bold;\n }\n\n becomes:\n\n\n Alternatively, if WebComponents.ShadowCSS.strictStyling is set to true then\n selectors are scoped by adding an attribute selector suffix to each\n simple selector that contains the host element tag name. Each element\n in the element's ShadowDOM template is also given the scope attribute.\n Thus, these rules match only elements that have the scope attribute.\n For example, given a scope name of x-foo, a rule like this:\n\n div {\n font-weight: bold;\n }\n\n becomes:\n\n div[x-foo] {\n font-weight: bold;\n }\n\n Note that elements that are dynamically added to a scope must have the scope\n selector added to them manually.\n\n * upper/lower bound encapsulation: Styles which are defined outside a\n shadowRoot should not cross the ShadowDOM boundary and should not apply\n inside a shadowRoot.\n\n This styling behavior is not emulated. Some possible ways to do this that\n were rejected due to complexity and/or performance concerns include: (1) reset\n every possible property for every possible selector for a given scope name;\n (2) re-implement css in javascript.\n\n As an alternative, users should make sure to use selectors\n specific to the scope in which they are working.\n\n * ::distributed: This behavior is not emulated. It's often not necessary\n to style the contents of a specific insertion point and instead, descendants\n of the host element can be styled selectively. Users can also create an\n extra node around an insertion point and style that node's contents\n via descendent selectors. For example, with a shadowRoot like this:\n\n \n \n\n could become:\n\n \n

\n \n

\n\n Note the use of @polyfill in the comment above a ShadowDOM specific style\n declaration. This is a directive to the styling shim to use the selector\n in comments in lieu of the next selector when running under polyfill.\n*/\nclass ShadowCss {\n constructor() {\n this.strictStyling = true;\n }\n /*\n * Shim some cssText with the given selector. Returns cssText that can\n * be included in the document via WebComponents.ShadowCSS.addCssToDocument(css).\n *\n * When strictStyling is true:\n * - selector is the attribute added to all elements inside the host,\n * - hostSelector is the attribute added to the host itself.\n */\n shimCssText(cssText, selector, hostSelector = '') {\n const commentsWithHash = extractCommentsWithHash(cssText);\n cssText = stripComments(cssText);\n cssText = this._insertDirectives(cssText);\n const scopedCssText = this._scopeCssText(cssText, selector, hostSelector);\n return [scopedCssText, ...commentsWithHash].join('\\n');\n }\n _insertDirectives(cssText) {\n cssText = this._insertPolyfillDirectivesInCssText(cssText);\n return this._insertPolyfillRulesInCssText(cssText);\n }\n /*\n * Process styles to convert native ShadowDOM rules that will trip\n * up the css parser; we rely on decorating the stylesheet with inert rules.\n *\n * For example, we convert this rule:\n *\n * polyfill-next-selector { content: ':host menu-item'; }\n * ::content menu-item {\n *\n * to this:\n *\n * scopeName menu-item {\n *\n **/\n _insertPolyfillDirectivesInCssText(cssText) {\n // Difference with webcomponents.js: does not handle comments\n return cssText.replace(_cssContentNextSelectorRe, function (...m) {\n return m[2] + '{';\n });\n }\n /*\n * Process styles to add rules which will only apply under the polyfill\n *\n * For example, we convert this rule:\n *\n * polyfill-rule {\n * content: ':host menu-item';\n * ...\n * }\n *\n * to this:\n *\n * scopeName menu-item {...}\n *\n **/\n _insertPolyfillRulesInCssText(cssText) {\n // Difference with webcomponents.js: does not handle comments\n return cssText.replace(_cssContentRuleRe, (...m) => {\n const rule = m[0].replace(m[1], '').replace(m[2], '');\n return m[4] + rule;\n });\n }\n /* Ensure styles are scoped. Pseudo-scoping takes a rule like:\n *\n * .foo {... }\n *\n * and converts this to\n *\n * scopeName .foo { ... }\n */\n _scopeCssText(cssText, scopeSelector, hostSelector) {\n const unscopedRules = this._extractUnscopedRulesFromCssText(cssText);\n // replace :host and :host-context -shadowcsshost and -shadowcsshost respectively\n cssText = this._insertPolyfillHostInCssText(cssText);\n cssText = this._convertColonHost(cssText);\n cssText = this._convertColonHostContext(cssText);\n cssText = this._convertShadowDOMSelectors(cssText);\n if (scopeSelector) {\n cssText = this._scopeSelectors(cssText, scopeSelector, hostSelector);\n }\n cssText = cssText + '\\n' + unscopedRules;\n return cssText.trim();\n }\n /*\n * Process styles to add rules which will only apply under the polyfill\n * and do not process via CSSOM. (CSSOM is destructive to rules on rare\n * occasions, e.g. -webkit-calc on Safari.)\n * For example, we convert this rule:\n *\n * @polyfill-unscoped-rule {\n * content: 'menu-item';\n * ... }\n *\n * to this:\n *\n * menu-item {...}\n *\n **/\n _extractUnscopedRulesFromCssText(cssText) {\n // Difference with webcomponents.js: does not handle comments\n let r = '';\n let m;\n _cssContentUnscopedRuleRe.lastIndex = 0;\n while ((m = _cssContentUnscopedRuleRe.exec(cssText)) !== null) {\n const rule = m[0].replace(m[2], '').replace(m[1], m[4]);\n r += rule + '\\n\\n';\n }\n return r;\n }\n /*\n * convert a rule like :host(.foo) > .bar { }\n *\n * to\n *\n * .foo > .bar\n */\n _convertColonHost(cssText) {\n return this._convertColonRule(cssText, _cssColonHostRe, this._colonHostPartReplacer);\n }\n /*\n * convert a rule like :host-context(.foo) > .bar { }\n *\n * to\n *\n * .foo > .bar, .foo scopeName > .bar { }\n *\n * and\n *\n * :host-context(.foo:host) .bar { ... }\n *\n * to\n *\n * .foo .bar { ... }\n */\n _convertColonHostContext(cssText) {\n return this._convertColonRule(cssText, _cssColonHostContextRe, this._colonHostContextPartReplacer);\n }\n _convertColonRule(cssText, regExp, partReplacer) {\n // m[1] = :host(-context), m[2] = contents of (), m[3] rest of rule\n return cssText.replace(regExp, function (...m) {\n if (m[2]) {\n const parts = m[2].split(',');\n const r = [];\n for (let i = 0; i < parts.length; i++) {\n const p = parts[i].trim();\n if (!p)\n break;\n r.push(partReplacer(_polyfillHostNoCombinator, p, m[3]));\n }\n return r.join(',');\n }\n else {\n return _polyfillHostNoCombinator + m[3];\n }\n });\n }\n _colonHostContextPartReplacer(host, part, suffix) {\n if (part.indexOf(_polyfillHost) > -1) {\n return this._colonHostPartReplacer(host, part, suffix);\n }\n else {\n return host + part + suffix + ', ' + part + ' ' + host + suffix;\n }\n }\n _colonHostPartReplacer(host, part, suffix) {\n return host + part.replace(_polyfillHost, '') + suffix;\n }\n /*\n * Convert combinators like ::shadow and pseudo-elements like ::content\n * by replacing with space.\n */\n _convertShadowDOMSelectors(cssText) {\n return _shadowDOMSelectorsRe.reduce((result, pattern) => result.replace(pattern, ' '), cssText);\n }\n // change a selector like 'div' to 'name div'\n _scopeSelectors(cssText, scopeSelector, hostSelector) {\n return processRules(cssText, (rule) => {\n let selector = rule.selector;\n let content = rule.content;\n if (rule.selector[0] != '@') {\n selector =\n this._scopeSelector(rule.selector, scopeSelector, hostSelector, this.strictStyling);\n }\n else if (rule.selector.startsWith('@media') || rule.selector.startsWith('@supports') ||\n rule.selector.startsWith('@page') || rule.selector.startsWith('@document')) {\n content = this._scopeSelectors(rule.content, scopeSelector, hostSelector);\n }\n return new CssRule(selector, content);\n });\n }\n _scopeSelector(selector, scopeSelector, hostSelector, strict) {\n return selector.split(',')\n .map(part => part.trim().split(_shadowDeepSelectors))\n .map((deepParts) => {\n const [shallowPart, ...otherParts] = deepParts;\n const applyScope = (shallowPart) => {\n if (this._selectorNeedsScoping(shallowPart, scopeSelector)) {\n return strict ?\n this._applyStrictSelectorScope(shallowPart, scopeSelector, hostSelector) :\n this._applySelectorScope(shallowPart, scopeSelector, hostSelector);\n }\n else {\n return shallowPart;\n }\n };\n return [applyScope(shallowPart), ...otherParts].join(' ');\n })\n .join(', ');\n }\n _selectorNeedsScoping(selector, scopeSelector) {\n const re = this._makeScopeMatcher(scopeSelector);\n return !re.test(selector);\n }\n _makeScopeMatcher(scopeSelector) {\n const lre = /\\[/g;\n const rre = /\\]/g;\n scopeSelector = scopeSelector.replace(lre, '\\\\[').replace(rre, '\\\\]');\n return new RegExp('^(' + scopeSelector + ')' + _selectorReSuffix, 'm');\n }\n _applySelectorScope(selector, scopeSelector, hostSelector) {\n // Difference from webcomponents.js: scopeSelector could not be an array\n return this._applySimpleSelectorScope(selector, scopeSelector, hostSelector);\n }\n // scope via name and [is=name]\n _applySimpleSelectorScope(selector, scopeSelector, hostSelector) {\n // In Android browser, the lastIndex is not reset when the regex is used in String.replace()\n _polyfillHostRe.lastIndex = 0;\n if (_polyfillHostRe.test(selector)) {\n const replaceBy = this.strictStyling ? `[${hostSelector}]` : scopeSelector;\n return selector\n .replace(_polyfillHostNoCombinatorRe, (hnc, selector) => {\n return selector.replace(/([^:]*)(:*)(.*)/, (_, before, colon, after) => {\n return before + replaceBy + colon + after;\n });\n })\n .replace(_polyfillHostRe, replaceBy + ' ');\n }\n return scopeSelector + ' ' + selector;\n }\n // return a selector with [name] suffix on each simple selector\n // e.g. .foo.bar > .zot becomes .foo[name].bar[name] > .zot[name] /** @internal */\n _applyStrictSelectorScope(selector, scopeSelector, hostSelector) {\n const isRe = /\\[is=([^\\]]*)\\]/g;\n scopeSelector = scopeSelector.replace(isRe, (_, ...parts) => parts[0]);\n const attrName = '[' + scopeSelector + ']';\n const _scopeSelectorPart = (p) => {\n let scopedP = p.trim();\n if (!scopedP) {\n return '';\n }\n if (p.indexOf(_polyfillHostNoCombinator) > -1) {\n scopedP = this._applySimpleSelectorScope(p, scopeSelector, hostSelector);\n }\n else {\n // remove :host since it should be unnecessary\n const t = p.replace(_polyfillHostRe, '');\n if (t.length > 0) {\n const matches = t.match(/([^:]*)(:*)(.*)/);\n if (matches) {\n scopedP = matches[1] + attrName + matches[2] + matches[3];\n }\n }\n }\n return scopedP;\n };\n const safeContent = new SafeSelector(selector);\n selector = safeContent.content();\n let scopedSelector = '';\n let startIndex = 0;\n let res;\n const sep = /( |>|\\+|~(?!=))\\s*/g;\n // If a selector appears before :host it should not be shimmed as it\n // matches on ancestor elements and not on elements in the host's shadow\n // `:host-context(div)` is transformed to\n // `-shadowcsshost-no-combinatordiv, div -shadowcsshost-no-combinator`\n // the `div` is not part of the component in the 2nd selectors and should not be scoped.\n // Historically `component-tag:host` was matching the component so we also want to preserve\n // this behavior to avoid breaking legacy apps (it should not match).\n // The behavior should be:\n // - `tag:host` -> `tag[h]` (this is to avoid breaking legacy apps, should not match anything)\n // - `tag :host` -> `tag [h]` (`tag` is not scoped because it's considered part of a\n // `:host-context(tag)`)\n const hasHost = selector.indexOf(_polyfillHostNoCombinator) > -1;\n // Only scope parts after the first `-shadowcsshost-no-combinator` when it is present\n let shouldScope = !hasHost;\n while ((res = sep.exec(selector)) !== null) {\n const separator = res[1];\n const part = selector.slice(startIndex, res.index).trim();\n shouldScope = shouldScope || part.indexOf(_polyfillHostNoCombinator) > -1;\n const scopedPart = shouldScope ? _scopeSelectorPart(part) : part;\n scopedSelector += `${scopedPart} ${separator} `;\n startIndex = sep.lastIndex;\n }\n const part = selector.substring(startIndex);\n shouldScope = shouldScope || part.indexOf(_polyfillHostNoCombinator) > -1;\n scopedSelector += shouldScope ? _scopeSelectorPart(part) : part;\n // replace the placeholders with their original values\n return safeContent.restore(scopedSelector);\n }\n _insertPolyfillHostInCssText(selector) {\n return selector.replace(_colonHostContextRe, _polyfillHostContext)\n .replace(_colonHostRe, _polyfillHost);\n }\n}\nclass SafeSelector {\n constructor(selector) {\n this.placeholders = [];\n this.index = 0;\n // Replaces attribute selectors with placeholders.\n // The WS in [attr=\"va lue\"] would otherwise be interpreted as a selector separator.\n selector = selector.replace(/(\\[[^\\]]*\\])/g, (_, keep) => {\n const replaceBy = `__ph-${this.index}__`;\n this.placeholders.push(keep);\n this.index++;\n return replaceBy;\n });\n // Replaces the expression in `:nth-child(2n + 1)` with a placeholder.\n // WS and \"+\" would otherwise be interpreted as selector separators.\n this._content = selector.replace(/(:nth-[-\\w]+)(\$[^)]+\$)/g, (_, pseudo, exp) => {\n const replaceBy = `__ph-${this.index}__`;\n this.placeholders.push(exp);\n this.index++;\n return pseudo + replaceBy;\n });\n }\n restore(content) {\n return content.replace(/__ph-(\\d+)__/g, (ph, index) => this.placeholders[+index]);\n }\n content() {\n return this._content;\n }\n}\nconst _cssContentNextSelectorRe = /polyfill-next-selector[^}]*content:[\\s]*?(['\"])(.*?)\\1[;\\s]*}([^{]*?){/gim;\nconst _cssContentRuleRe = /(polyfill-rule)[^}]*(content:[\\s]*(['\"])(.*?)\\3)[;\\s]*[^}]*}/gim;\nconst _cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content:[\\s]*(['\"])(.*?)\\3)[;\\s]*[^}]*}/gim;\nconst _polyfillHost = '-shadowcsshost';\n// note: :host-context pre-processed to -shadowcsshostcontext.\nconst _polyfillHostContext = '-shadowcsscontext';\nconst _parenSuffix = ')(?:\\\$(' +\n '(?:\\\\([^)(]*\\\$|[^)(]*)+?' +\n ')\\\\))?([^,{]*)';\nconst _cssColonHostRe = new RegExp('(' + _polyfillHost + _parenSuffix, 'gim');\nconst _cssColonHostContextRe = new RegExp('(' + _polyfillHostContext + _parenSuffix, 'gim');\nconst _polyfillHostNoCombinator = _polyfillHost + '-no-combinator';\nconst _polyfillHostNoCombinatorRe = /-shadowcsshost-no-combinator([^\\s]*)/;\nconst _shadowDOMSelectorsRe = [\n /::shadow/g,\n /::content/g,\n // Deprecated selectors\n /\\/shadow-deep\\//g,\n /\\/shadow\\//g,\n];\n// The deep combinator is deprecated in the CSS spec\n// Support for `>>>`, `deep`, `::ng-deep` is then also deprecated and will be removed in the future.\n// see https://github.com/angular/angular/pull/17677\nconst _shadowDeepSelectors = /(?:>>>)|(?:\\/deep\\/)|(?:::ng-deep)/g;\nconst _selectorReSuffix = '([>\\\\s~+\\[.,{:][\\\\s\\\\S]*)?$';\nconst _polyfillHostRe = /-shadowcsshost/gim;\nconst _colonHostRe = /:host/gim;\nconst _colonHostContextRe = /:host-context/gim;\nconst _commentRe = /\\/\\*\\s*[\\s\\S]*?\\*\\//g;\nfunction stripComments(input) {\n return input.replace(_commentRe, '');\n}\nconst _commentWithHashRe = /\\/\\*\\s*#\\s*source(Mapping)?URL=[\\s\\S]+?\\*\\//g;\nfunction extractCommentsWithHash(input) {\n return input.match(_commentWithHashRe) || [];\n}\nconst BLOCK_PLACEHOLDER = '%BLOCK%';\nconst QUOTE_PLACEHOLDER = '%QUOTED%';\nconst _ruleRe = /(\\s*)([^;\\{\\}]+?)(\\s*)((?:{%BLOCK%}?\\s*;?)|(?:\\s*;))/g;\nconst _quotedRe = /%QUOTED%/g;\nconst CONTENT_PAIRS = new Map([['{', '}']]);\nconst QUOTE_PAIRS = new Map([[`\"`, `\"`], [`'`, `'`]]);\nclass CssRule {\n constructor(selector, content) {\n this.selector = selector;\n this.content = content;\n }\n}\nfunction processRules(input, ruleCallback) {\n const inputWithEscapedQuotes = escapeBlocks(input, QUOTE_PAIRS, QUOTE_PLACEHOLDER);\n const inputWithEscapedBlocks = escapeBlocks(inputWithEscapedQuotes.escapedString, CONTENT_PAIRS, BLOCK_PLACEHOLDER);\n let nextBlockIndex = 0;\n let nextQuoteIndex = 0;\n return inputWithEscapedBlocks.escapedString\n .replace(_ruleRe, (...m) => {\n const selector = m[2];\n let content = '';\n let suffix = m[4];\n let contentPrefix = '';\n if (suffix && suffix.startsWith('{' + BLOCK_PLACEHOLDER)) {\n content = inputWithEscapedBlocks.blocks[nextBlockIndex++];\n suffix = suffix.substring(BLOCK_PLACEHOLDER.length + 1);\n contentPrefix = '{';\n }\n const rule = ruleCallback(new CssRule(selector, content));\n return `${m[1]}${rule.selector}${m[3]}${contentPrefix}${rule.content}${suffix}`;\n })\n .replace(_quotedRe, () => inputWithEscapedQuotes.blocks[nextQuoteIndex++]);\n}\nclass StringWithEscapedBlocks {\n constructor(escapedString, blocks) {\n this.escapedString = escapedString;\n this.blocks = blocks;\n }\n}\nfunction escapeBlocks(input, charPairs, placeholder) {\n const resultParts = [];\n const escapedBlocks = [];\n let openCharCount = 0;\n let nonBlockStartIndex = 0;\n let blockStartIndex = -1;\n let openChar;\n let closeChar;\n for (let i = 0; i < input.length; i++) {\n const char = input[i];\n if (char === '\\\\') {\n i++;\n }\n else if (char === closeChar) {\n openCharCount--;\n if (openCharCount === 0) {\n escapedBlocks.push(input.substring(blockStartIndex, i));\n resultParts.push(placeholder);\n nonBlockStartIndex = i;\n blockStartIndex = -1;\n openChar = closeChar = undefined;\n }\n }\n else if (char === openChar) {\n openCharCount++;\n }\n else if (openCharCount === 0 && charPairs.has(char)) {\n openChar = char;\n closeChar = charPairs.get(char);\n openCharCount = 1;\n blockStartIndex = i + 1;\n resultParts.push(input.substring(nonBlockStartIndex, blockStartIndex));\n }\n }\n if (blockStartIndex !== -1) {\n escapedBlocks.push(input.substring(blockStartIndex));\n resultParts.push(placeholder);\n }\n else {\n resultParts.push(input.substring(nonBlockStartIndex));\n }\n return new StringWithEscapedBlocks(resultParts.join(''), escapedBlocks);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst COMPONENT_VARIABLE = '%COMP%';\nconst HOST_ATTR = `_nghost-${COMPONENT_VARIABLE}`;\nconst CONTENT_ATTR = `_ngcontent-${COMPONENT_VARIABLE}`;\nclass StylesCompileDependency {\n constructor(name, moduleUrl, setValue) {\n this.name = name;\n this.moduleUrl = moduleUrl;\n this.setValue = setValue;\n }\n}\nclass CompiledStylesheet {\n constructor(outputCtx, stylesVar, dependencies, isShimmed, meta) {\n this.outputCtx = outputCtx;\n this.stylesVar = stylesVar;\n this.dependencies = dependencies;\n this.isShimmed = isShimmed;\n this.meta = meta;\n }\n}\nclass StyleCompiler {\n constructor(_urlResolver) {\n this._urlResolver = _urlResolver;\n this._shadowCss = new ShadowCss();\n }\n compileComponent(outputCtx, comp) {\n const template = comp.template;\n return this._compileStyles(outputCtx, comp, new CompileStylesheetMetadata({\n styles: template.styles,\n styleUrls: template.styleUrls,\n moduleUrl: identifierModuleUrl(comp.type)\n }), this.needsStyleShim(comp), true);\n }\n compileStyles(outputCtx, comp, stylesheet, shim = this.needsStyleShim(comp)) {\n return this._compileStyles(outputCtx, comp, stylesheet, shim, false);\n }\n needsStyleShim(comp) {\n return comp.template.encapsulation === ViewEncapsulation.Emulated;\n }\n _compileStyles(outputCtx, comp, stylesheet, shim, isComponentStylesheet) {\n const styleExpressions = stylesheet.styles.map(plainStyle => literal(this._shimIfNeeded(plainStyle, shim)));\n const dependencies = [];\n stylesheet.styleUrls.forEach((styleUrl) => {\n const exprIndex = styleExpressions.length;\n // Note: This placeholder will be filled later.\n styleExpressions.push(null);\n dependencies.push(new StylesCompileDependency(getStylesVarName(null), styleUrl, (value) => styleExpressions[exprIndex] = outputCtx.importExpr(value)));\n });\n // styles variable contains plain strings and arrays of other styles arrays (recursive),\n // so we set its type to dynamic.\n const stylesVar = getStylesVarName(isComponentStylesheet ? comp : null);\n const stmt = variable(stylesVar)\n .set(literalArr(styleExpressions, new ArrayType(DYNAMIC_TYPE, [TypeModifier.Const])))\n .toDeclStmt(null, isComponentStylesheet ? [StmtModifier.Final] : [\n StmtModifier.Final, StmtModifier.Exported\n ]);\n outputCtx.statements.push(stmt);\n return new CompiledStylesheet(outputCtx, stylesVar, dependencies, shim, stylesheet);\n }\n _shimIfNeeded(style, shim) {\n return shim ? this._shadowCss.shimCssText(style, CONTENT_ATTR, HOST_ATTR) : style;\n }\n}\nfunction getStylesVarName(component) {\n let result = `styles`;\n if (component) {\n result += `_${identifierName(component.type)}`;\n }\n return result;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * A path is an ordered set of elements. Typically a path is to a\n * particular offset in a source file. The head of the list is the top\n * most node. The tail is the node that contains the offset directly.\n *\n * For example, the expression `a + b + c` might have an ast that looks\n * like:\n * +\n * / \\\n * a +\n * / \\\n * b c\n *\n * The path to the node at offset 9 would be `['+' at 1-10, '+' at 7-10,\n * 'c' at 9-10]` and the path the node at offset 1 would be\n * `['+' at 1-10, 'a' at 1-2]`.\n */\nclass AstPath {\n constructor(path, position = -1) {\n this.path = path;\n this.position = position;\n }\n get empty() {\n return !this.path || !this.path.length;\n }\n get head() {\n return this.path[0];\n }\n get tail() {\n return this.path[this.path.length - 1];\n }\n parentOf(node) {\n return node && this.path[this.path.indexOf(node) - 1];\n }\n childOf(node) {\n return this.path[this.path.indexOf(node) + 1];\n }\n first(ctor) {\n for (let i = this.path.length - 1; i >= 0; i--) {\n let item = this.path[i];\n if (item instanceof ctor)\n return item;\n }\n }\n push(node) {\n this.path.push(node);\n }\n pop() {\n return this.path.pop();\n }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass NodeWithI18n {\n constructor(sourceSpan, i18n) {\n this.sourceSpan = sourceSpan;\n this.i18n = i18n;\n }\n}\nclass Text$3 extends NodeWithI18n {\n constructor(value, sourceSpan, i18n) {\n super(sourceSpan, i18n);\n this.value = value;\n }\n visit(visitor, context) {\n return visitor.visitText(this, context);\n }\n}\nclass Expansion extends NodeWithI18n {\n constructor(switchValue, type, cases, sourceSpan, switchValueSourceSpan, i18n) {\n super(sourceSpan, i18n);\n this.switchValue = switchValue;\n this.type = type;\n this.cases = cases;\n this.switchValueSourceSpan = switchValueSourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitExpansion(this, context);\n }\n}\nclass ExpansionCase {\n constructor(value, expression, sourceSpan, valueSourceSpan, expSourceSpan) {\n this.value = value;\n this.expression = expression;\n this.sourceSpan = sourceSpan;\n this.valueSourceSpan = valueSourceSpan;\n this.expSourceSpan = expSourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitExpansionCase(this, context);\n }\n}\nclass Attribute extends NodeWithI18n {\n constructor(name, value, sourceSpan, valueSpan, i18n) {\n super(sourceSpan, i18n);\n this.name = name;\n this.value = value;\n this.valueSpan = valueSpan;\n }\n visit(visitor, context) {\n return visitor.visitAttribute(this, context);\n }\n}\nclass Element$1 extends NodeWithI18n {\n constructor(name, attrs, children, sourceSpan, startSourceSpan = null, endSourceSpan = null, i18n) {\n super(sourceSpan, i18n);\n this.name = name;\n this.attrs = attrs;\n this.children = children;\n this.startSourceSpan = startSourceSpan;\n this.endSourceSpan = endSourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitElement(this, context);\n }\n}\nclass Comment {\n constructor(value, sourceSpan) {\n this.value = value;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitComment(this, context);\n }\n}\nfunction visitAll$1(visitor, nodes, context = null) {\n const result = [];\n const visit = visitor.visit ?\n (ast) => visitor.visit(ast, context) || ast.visit(visitor, context) :\n (ast) => ast.visit(visitor, context);\n nodes.forEach(ast => {\n const astResult = visit(ast);\n if (astResult) {\n result.push(astResult);\n }\n });\n return result;\n}\nclass RecursiveVisitor$1 {\n constructor() { }\n visitElement(ast, context) {\n this.visitChildren(context, visit => {\n visit(ast.attrs);\n visit(ast.children);\n });\n }\n visitAttribute(ast, context) { }\n visitText(ast, context) { }\n visitComment(ast, context) { }\n visitExpansion(ast, context) {\n return this.visitChildren(context, visit => {\n visit(ast.cases);\n });\n }\n visitExpansionCase(ast, context) { }\n visitChildren(context, cb) {\n let results = [];\n let t = this;\n function visit(children) {\n if (children)\n results.push(visitAll$1(t, children, context));\n }\n cb(visit);\n return Array.prototype.concat.apply([], results);\n }\n}\nfunction spanOf(ast) {\n const start = ast.sourceSpan.start.offset;\n let end = ast.sourceSpan.end.offset;\n if (ast instanceof Element$1) {\n if (ast.endSourceSpan) {\n end = ast.endSourceSpan.end.offset;\n }\n else if (ast.children && ast.children.length) {\n end = spanOf(ast.children[ast.children.length - 1]).end;\n }\n }\n return { start, end };\n}\nfunction findNode(nodes, position) {\n const path = [];\n const visitor = new class extends RecursiveVisitor$1 {\n visit(ast, context) {\n const span = spanOf(ast);\n if (span.start <= position && position < span.end) {\n path.push(ast);\n }\n else {\n // Returning a value here will result in the children being skipped.\n return true;\n }\n }\n };\n visitAll$1(visitor, nodes);\n return new AstPath(path, position);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nvar TokenType;\n(function (TokenType) {\n TokenType[TokenType[\"TAG_OPEN_START\"] = 0] = \"TAG_OPEN_START\";\n TokenType[TokenType[\"TAG_OPEN_END\"] = 1] = \"TAG_OPEN_END\";\n TokenType[TokenType[\"TAG_OPEN_END_VOID\"] = 2] = \"TAG_OPEN_END_VOID\";\n TokenType[TokenType[\"TAG_CLOSE\"] = 3] = \"TAG_CLOSE\";\n TokenType[TokenType[\"TEXT\"] = 4] = \"TEXT\";\n TokenType[TokenType[\"ESCAPABLE_RAW_TEXT\"] = 5] = \"ESCAPABLE_RAW_TEXT\";\n TokenType[TokenType[\"RAW_TEXT\"] = 6] = \"RAW_TEXT\";\n TokenType[TokenType[\"COMMENT_START\"] = 7] = \"COMMENT_START\";\n TokenType[TokenType[\"COMMENT_END\"] = 8] = \"COMMENT_END\";\n TokenType[TokenType[\"CDATA_START\"] = 9] = \"CDATA_START\";\n TokenType[TokenType[\"CDATA_END\"] = 10] = \"CDATA_END\";\n TokenType[TokenType[\"ATTR_NAME\"] = 11] = \"ATTR_NAME\";\n TokenType[TokenType[\"ATTR_QUOTE\"] = 12] = \"ATTR_QUOTE\";\n TokenType[TokenType[\"ATTR_VALUE\"] = 13] = \"ATTR_VALUE\";\n TokenType[TokenType[\"DOC_TYPE\"] = 14] = \"DOC_TYPE\";\n TokenType[TokenType[\"EXPANSION_FORM_START\"] = 15] = \"EXPANSION_FORM_START\";\n TokenType[TokenType[\"EXPANSION_CASE_VALUE\"] = 16] = \"EXPANSION_CASE_VALUE\";\n TokenType[TokenType[\"EXPANSION_CASE_EXP_START\"] = 17] = \"EXPANSION_CASE_EXP_START\";\n TokenType[TokenType[\"EXPANSION_CASE_EXP_END\"] = 18] = \"EXPANSION_CASE_EXP_END\";\n TokenType[TokenType[\"EXPANSION_FORM_END\"] = 19] = \"EXPANSION_FORM_END\";\n TokenType[TokenType[\"EOF\"] = 20] = \"EOF\";\n})(TokenType || (TokenType = {}));\nclass Token {\n constructor(type, parts, sourceSpan) {\n this.type = type;\n this.parts = parts;\n this.sourceSpan = sourceSpan;\n }\n}\nclass TokenError extends ParseError {\n constructor(errorMsg, tokenType, span) {\n super(span, errorMsg);\n this.tokenType = tokenType;\n }\n}\nclass TokenizeResult {\n constructor(tokens, errors, nonNormalizedIcuExpressions) {\n this.tokens = tokens;\n this.errors = errors;\n this.nonNormalizedIcuExpressions = nonNormalizedIcuExpressions;\n }\n}\nfunction tokenize(source, url, getTagDefinition, options = {}) {\n const tokenizer = new _Tokenizer(new ParseSourceFile(source, url), getTagDefinition, options);\n tokenizer.tokenize();\n return new TokenizeResult(mergeTextTokens(tokenizer.tokens), tokenizer.errors, tokenizer.nonNormalizedIcuExpressions);\n}\nconst _CR_OR_CRLF_REGEXP = /\\r\\n?/g;\nfunction _unexpectedCharacterErrorMsg(charCode) {\n const char = charCode === $EOF ? 'EOF' : String.fromCharCode(charCode);\n return `Unexpected character \"${char}\"`;\n}\nfunction _unknownEntityErrorMsg(entitySrc) {\n return `Unknown entity \"${entitySrc}\" - use the \"&#;\" or \"&#x;\" syntax`;\n}\nfunction _unparsableEntityErrorMsg(type, entityStr) {\n return `Unable to parse entity \"${entityStr}\" - ${type} character reference entities must end with \";\"`;\n}\nvar CharacterReferenceType;\n(function (CharacterReferenceType) {\n CharacterReferenceType[\"HEX\"] = \"hexadecimal\";\n CharacterReferenceType[\"DEC\"] = \"decimal\";\n})(CharacterReferenceType || (CharacterReferenceType = {}));\nclass _ControlFlowError {\n constructor(error) {\n this.error = error;\n }\n}\n// See http://www.w3.org/TR/html51/syntax.html#writing\nclass _Tokenizer {\n /**\n * @param _file The html source file being tokenized.\n * @param _getTagDefinition A function that will retrieve a tag definition for a given tag name.\n * @param options Configuration of the tokenization.\n */\n constructor(_file, _getTagDefinition, options) {\n this._getTagDefinition = _getTagDefinition;\n this._currentTokenStart = null;\n this._currentTokenType = null;\n this._expansionCaseStack = [];\n this._inInterpolation = false;\n this.tokens = [];\n this.errors = [];\n this.nonNormalizedIcuExpressions = [];\n this._tokenizeIcu = options.tokenizeExpansionForms || false;\n this._interpolationConfig = options.interpolationConfig || DEFAULT_INTERPOLATION_CONFIG;\n this._leadingTriviaCodePoints =\n options.leadingTriviaChars && options.leadingTriviaChars.map(c => c.codePointAt(0) || 0);\n const range = options.range || { endPos: _file.content.length, startPos: 0, startLine: 0, startCol: 0 };\n this._cursor = options.escapedString ? new EscapedCharacterCursor(_file, range) :\n new PlainCharacterCursor(_file, range);\n this._preserveLineEndings = options.preserveLineEndings || false;\n this._escapedString = options.escapedString || false;\n this._i18nNormalizeLineEndingsInICUs = options.i18nNormalizeLineEndingsInICUs || false;\n try {\n this._cursor.init();\n }\n catch (e) {\n this.handleError(e);\n }\n }\n _processCarriageReturns(content) {\n if (this._preserveLineEndings) {\n return content;\n }\n // http://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream\n // In order to keep the original position in the source, we can not\n // pre-process it.\n // Instead CRs are processed right before instantiating the tokens.\n return content.replace(_CR_OR_CRLF_REGEXP, '\\n');\n }\n tokenize() {\n while (this._cursor.peek() !== $EOF) {\n const start = this._cursor.clone();\n try {\n if (this._attemptCharCode($LT)) {\n if (this._attemptCharCode($BANG)) {\n if (this._attemptCharCode($LBRACKET)) {\n this._consumeCdata(start);\n }\n else if (this._attemptCharCode($MINUS)) {\n this._consumeComment(start);\n }\n else {\n this._consumeDocType(start);\n }\n }\n else if (this._attemptCharCode($SLASH)) {\n this._consumeTagClose(start);\n }\n else {\n this._consumeTagOpen(start);\n }\n }\n else if (!(this._tokenizeIcu && this._tokenizeExpansionForm())) {\n this._consumeText();\n }\n }\n catch (e) {\n this.handleError(e);\n }\n }\n this._beginToken(TokenType.EOF);\n this._endToken([]);\n }\n /**\n * @returns whether an ICU token has been created\n * @internal\n */\n _tokenizeExpansionForm() {\n if (this.isExpansionFormStart()) {\n this._consumeExpansionFormStart();\n return true;\n }\n if (isExpansionCaseStart(this._cursor.peek()) && this._isInExpansionForm()) {\n this._consumeExpansionCaseStart();\n return true;\n }\n if (this._cursor.peek() === $RBRACE) {\n if (this._isInExpansionCase()) {\n this._consumeExpansionCaseEnd();\n return true;\n }\n if (this._isInExpansionForm()) {\n this._consumeExpansionFormEnd();\n return true;\n }\n }\n return false;\n }\n _beginToken(type, start = this._cursor.clone()) {\n this._currentTokenStart = start;\n this._currentTokenType = type;\n }\n _endToken(parts, end) {\n if (this._currentTokenStart === null) {\n throw new TokenError('Programming error - attempted to end a token when there was no start to the token', this._currentTokenType, this._cursor.getSpan(end));\n }\n if (this._currentTokenType === null) {\n throw new TokenError('Programming error - attempted to end a token which has no token type', null, this._cursor.getSpan(this._currentTokenStart));\n }\n const token = new Token(this._currentTokenType, parts, this._cursor.getSpan(this._currentTokenStart, this._leadingTriviaCodePoints));\n this.tokens.push(token);\n this._currentTokenStart = null;\n this._currentTokenType = null;\n return token;\n }\n _createError(msg, span) {\n if (this._isInExpansionForm()) {\n msg += ` (Do you have an unescaped \"{\" in your template? Use \"{{ '{' }}\") to escape it.)`;\n }\n const error = new TokenError(msg, this._currentTokenType, span);\n this._currentTokenStart = null;\n this._currentTokenType = null;\n return new _ControlFlowError(error);\n }\n handleError(e) {\n if (e instanceof CursorError) {\n e = this._createError(e.msg, this._cursor.getSpan(e.cursor));\n }\n if (e instanceof _ControlFlowError) {\n this.errors.push(e.error);\n }\n else {\n throw e;\n }\n }\n _attemptCharCode(charCode) {\n if (this._cursor.peek() === charCode) {\n this._cursor.advance();\n return true;\n }\n return false;\n }\n _attemptCharCodeCaseInsensitive(charCode) {\n if (compareCharCodeCaseInsensitive(this._cursor.peek(), charCode)) {\n this._cursor.advance();\n return true;\n }\n return false;\n }\n _requireCharCode(charCode) {\n const location = this._cursor.clone();\n if (!this._attemptCharCode(charCode)) {\n throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(location));\n }\n }\n _attemptStr(chars) {\n const len = chars.length;\n if (this._cursor.charsLeft() < len) {\n return false;\n }\n const initialPosition = this._cursor.clone();\n for (let i = 0; i < len; i++) {\n if (!this._attemptCharCode(chars.charCodeAt(i))) {\n // If attempting to parse the string fails, we want to reset the parser\n // to where it was before the attempt\n this._cursor = initialPosition;\n return false;\n }\n }\n return true;\n }\n _attemptStrCaseInsensitive(chars) {\n for (let i = 0; i < chars.length; i++) {\n if (!this._attemptCharCodeCaseInsensitive(chars.charCodeAt(i))) {\n return false;\n }\n }\n return true;\n }\n _requireStr(chars) {\n const location = this._cursor.clone();\n if (!this._attemptStr(chars)) {\n throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(location));\n }\n }\n _attemptCharCodeUntilFn(predicate) {\n while (!predicate(this._cursor.peek())) {\n this._cursor.advance();\n }\n }\n _requireCharCodeUntilFn(predicate, len) {\n const start = this._cursor.clone();\n this._attemptCharCodeUntilFn(predicate);\n if (this._cursor.diff(start) < len) {\n throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(start));\n }\n }\n _attemptUntilChar(char) {\n while (this._cursor.peek() !== char) {\n this._cursor.advance();\n }\n }\n _readChar(decodeEntities) {\n if (decodeEntities && this._cursor.peek() === $AMPERSAND) {\n return this._decodeEntity();\n }\n else {\n // Don't rely upon reading directly from `_input` as the actual char value\n // may have been generated from an escape sequence.\n const char = String.fromCodePoint(this._cursor.peek());\n this._cursor.advance();\n return char;\n }\n }\n _decodeEntity() {\n const start = this._cursor.clone();\n this._cursor.advance();\n if (this._attemptCharCode($HASH)) {\n const isHex = this._attemptCharCode($x) || this._attemptCharCode($X);\n const codeStart = this._cursor.clone();\n this._attemptCharCodeUntilFn(isDigitEntityEnd);\n if (this._cursor.peek() != $SEMICOLON) {\n // Advance cursor to include the peeked character in the string provided to the error\n // message.\n this._cursor.advance();\n const entityType = isHex ? CharacterReferenceType.HEX : CharacterReferenceType.DEC;\n throw this._createError(_unparsableEntityErrorMsg(entityType, this._cursor.getChars(start)), this._cursor.getSpan());\n }\n const strNum = this._cursor.getChars(codeStart);\n this._cursor.advance();\n try {\n const charCode = parseInt(strNum, isHex ? 16 : 10);\n return String.fromCharCode(charCode);\n }\n catch (_a) {\n throw this._createError(_unknownEntityErrorMsg(this._cursor.getChars(start)), this._cursor.getSpan());\n }\n }\n else {\n const nameStart = this._cursor.clone();\n this._attemptCharCodeUntilFn(isNamedEntityEnd);\n if (this._cursor.peek() != $SEMICOLON) {\n this._cursor = nameStart;\n return '&';\n }\n const name = this._cursor.getChars(nameStart);\n this._cursor.advance();\n const char = NAMED_ENTITIES[name];\n if (!char) {\n throw this._createError(_unknownEntityErrorMsg(name), this._cursor.getSpan(start));\n }\n return char;\n }\n }\n _consumeRawText(decodeEntities, endMarkerPredicate) {\n this._beginToken(decodeEntities ? TokenType.ESCAPABLE_RAW_TEXT : TokenType.RAW_TEXT);\n const parts = [];\n while (true) {\n const tagCloseStart = this._cursor.clone();\n const foundEndMarker = endMarkerPredicate();\n this._cursor = tagCloseStart;\n if (foundEndMarker) {\n break;\n }\n parts.push(this._readChar(decodeEntities));\n }\n return this._endToken([this._processCarriageReturns(parts.join(''))]);\n }\n _consumeComment(start) {\n this._beginToken(TokenType.COMMENT_START, start);\n this._requireCharCode($MINUS);\n this._endToken([]);\n this._consumeRawText(false, () => this._attemptStr('-->'));\n this._beginToken(TokenType.COMMENT_END);\n this._requireStr('-->');\n this._endToken([]);\n }\n _consumeCdata(start) {\n this._beginToken(TokenType.CDATA_START, start);\n this._requireStr('CDATA[');\n this._endToken([]);\n this._consumeRawText(false, () => this._attemptStr(']]>'));\n this._beginToken(TokenType.CDATA_END);\n this._requireStr(']]>');\n this._endToken([]);\n }\n _consumeDocType(start) {\n this._beginToken(TokenType.DOC_TYPE, start);\n const contentStart = this._cursor.clone();\n this._attemptUntilChar($GT);\n const content = this._cursor.getChars(contentStart);\n this._cursor.advance();\n this._endToken([content]);\n }\n _consumePrefixAndName() {\n const nameOrPrefixStart = this._cursor.clone();\n let prefix = '';\n while (this._cursor.peek() !== $COLON && !isPrefixEnd(this._cursor.peek())) {\n this._cursor.advance();\n }\n let nameStart;\n if (this._cursor.peek() === $COLON) {\n prefix = this._cursor.getChars(nameOrPrefixStart);\n this._cursor.advance();\n nameStart = this._cursor.clone();\n }\n else {\n nameStart = nameOrPrefixStart;\n }\n this._requireCharCodeUntilFn(isNameEnd, prefix === '' ? 0 : 1);\n const name = this._cursor.getChars(nameStart);\n return [prefix, name];\n }\n _consumeTagOpen(start) {\n let tagName;\n let prefix;\n let openTagToken;\n let tokensBeforeTagOpen = this.tokens.length;\n const innerStart = this._cursor.clone();\n try {\n if (!isAsciiLetter(this._cursor.peek())) {\n throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(start));\n }\n openTagToken = this._consumeTagOpenStart(start);\n prefix = openTagToken.parts[0];\n tagName = openTagToken.parts[1];\n this._attemptCharCodeUntilFn(isNotWhitespace);\n while (this._cursor.peek() !== $SLASH && this._cursor.peek() !== $GT) {\n this._consumeAttributeName();\n this._attemptCharCodeUntilFn(isNotWhitespace);\n if (this._attemptCharCode($EQ)) {\n this._attemptCharCodeUntilFn(isNotWhitespace);\n this._consumeAttributeValue();\n }\n this._attemptCharCodeUntilFn(isNotWhitespace);\n }\n this._consumeTagOpenEnd();\n }\n catch (e) {\n if (e instanceof _ControlFlowError) {\n // When the start tag is invalid (including invalid \"attributes\"), assume we want a \"<\"\n this._cursor = innerStart;\n if (openTagToken) {\n this.tokens.length = tokensBeforeTagOpen;\n }\n // Back to back text tokens are merged at the end\n this._beginToken(TokenType.TEXT, start);\n this._endToken(['<']);\n return;\n }\n throw e;\n }\n const contentTokenType = this._getTagDefinition(tagName).contentType;\n if (contentTokenType === TagContentType.RAW_TEXT) {\n this._consumeRawTextWithTagClose(prefix, tagName, false);\n }\n else if (contentTokenType === TagContentType.ESCAPABLE_RAW_TEXT) {\n this._consumeRawTextWithTagClose(prefix, tagName, true);\n }\n }\n _consumeRawTextWithTagClose(prefix, tagName, decodeEntities) {\n const textToken = this._consumeRawText(decodeEntities, () => {\n if (!this._attemptCharCode($LT))\n return false;\n if (!this._attemptCharCode($SLASH))\n return false;\n this._attemptCharCodeUntilFn(isNotWhitespace);\n if (!this._attemptStrCaseInsensitive(tagName))\n return false;\n this._attemptCharCodeUntilFn(isNotWhitespace);\n return this._attemptCharCode($GT);\n });\n this._beginToken(TokenType.TAG_CLOSE);\n this._requireCharCodeUntilFn(code => code === $GT, 3);\n this._cursor.advance(); // Consume the `>`\n this._endToken([prefix, tagName]);\n }\n _consumeTagOpenStart(start) {\n this._beginToken(TokenType.TAG_OPEN_START, start);\n const parts = this._consumePrefixAndName();\n return this._endToken(parts);\n }\n _consumeAttributeName() {\n const attrNameStart = this._cursor.peek();\n if (attrNameStart === $SQ || attrNameStart === $DQ) {\n throw this._createError(_unexpectedCharacterErrorMsg(attrNameStart), this._cursor.getSpan());\n }\n this._beginToken(TokenType.ATTR_NAME);\n const prefixAndName = this._consumePrefixAndName();\n this._endToken(prefixAndName);\n }\n _consumeAttributeValue() {\n let value;\n if (this._cursor.peek() === $SQ || this._cursor.peek() === $DQ) {\n this._beginToken(TokenType.ATTR_QUOTE);\n const quoteChar = this._cursor.peek();\n this._cursor.advance();\n this._endToken([String.fromCodePoint(quoteChar)]);\n this._beginToken(TokenType.ATTR_VALUE);\n const parts = [];\n while (this._cursor.peek() !== quoteChar) {\n parts.push(this._readChar(true));\n }\n value = parts.join('');\n this._endToken([this._processCarriageReturns(value)]);\n this._beginToken(TokenType.ATTR_QUOTE);\n this._cursor.advance();\n this._endToken([String.fromCodePoint(quoteChar)]);\n }\n else {\n this._beginToken(TokenType.ATTR_VALUE);\n const valueStart = this._cursor.clone();\n this._requireCharCodeUntilFn(isNameEnd, 1);\n value = this._cursor.getChars(valueStart);\n this._endToken([this._processCarriageReturns(value)]);\n }\n }\n _consumeTagOpenEnd() {\n const tokenType = this._attemptCharCode($SLASH) ? TokenType.TAG_OPEN_END_VOID : TokenType.TAG_OPEN_END;\n this._beginToken(tokenType);\n this._requireCharCode($GT);\n this._endToken([]);\n }\n _consumeTagClose(start) {\n this._beginToken(TokenType.TAG_CLOSE, start);\n this._attemptCharCodeUntilFn(isNotWhitespace);\n const prefixAndName = this._consumePrefixAndName();\n this._attemptCharCodeUntilFn(isNotWhitespace);\n this._requireCharCode($GT);\n this._endToken(prefixAndName);\n }\n _consumeExpansionFormStart() {\n this._beginToken(TokenType.EXPANSION_FORM_START);\n this._requireCharCode($LBRACE);\n this._endToken([]);\n this._expansionCaseStack.push(TokenType.EXPANSION_FORM_START);\n this._beginToken(TokenType.RAW_TEXT);\n const condition = this._readUntil($COMMA);\n const normalizedCondition = this._processCarriageReturns(condition);\n if (this._escapedString || this._i18nNormalizeLineEndingsInICUs) {\n // Either the template is inline or,\n // we explicitly want to normalize line endings for this text.\n this._endToken([normalizedCondition]);\n }\n else {\n // The expression is in an external template and, for backward compatibility,\n // we are not normalizing line endings.\n const conditionToken = this._endToken([condition]);\n if (normalizedCondition !== condition) {\n this.nonNormalizedIcuExpressions.push(conditionToken);\n }\n }\n this._requireCharCode($COMMA);\n this._attemptCharCodeUntilFn(isNotWhitespace);\n this._beginToken(TokenType.RAW_TEXT);\n const type = this._readUntil($COMMA);\n this._endToken([type]);\n this._requireCharCode($COMMA);\n this._attemptCharCodeUntilFn(isNotWhitespace);\n }\n _consumeExpansionCaseStart() {\n this._beginToken(TokenType.EXPANSION_CASE_VALUE);\n const value = this._readUntil($LBRACE).trim();\n this._endToken([value]);\n this._attemptCharCodeUntilFn(isNotWhitespace);\n this._beginToken(TokenType.EXPANSION_CASE_EXP_START);\n this._requireCharCode($LBRACE);\n this._endToken([]);\n this._attemptCharCodeUntilFn(isNotWhitespace);\n this._expansionCaseStack.push(TokenType.EXPANSION_CASE_EXP_START);\n }\n _consumeExpansionCaseEnd() {\n this._beginToken(TokenType.EXPANSION_CASE_EXP_END);\n this._requireCharCode($RBRACE);\n this._endToken([]);\n this._attemptCharCodeUntilFn(isNotWhitespace);\n this._expansionCaseStack.pop();\n }\n _consumeExpansionFormEnd() {\n this._beginToken(TokenType.EXPANSION_FORM_END);\n this._requireCharCode($RBRACE);\n this._endToken([]);\n this._expansionCaseStack.pop();\n }\n _consumeText() {\n const start = this._cursor.clone();\n this._beginToken(TokenType.TEXT, start);\n const parts = [];\n do {\n if (this._interpolationConfig && this._attemptStr(this._interpolationConfig.start)) {\n parts.push(this._interpolationConfig.start);\n this._inInterpolation = true;\n }\n else if (this._interpolationConfig && this._inInterpolation &&\n this._attemptStr(this._interpolationConfig.end)) {\n parts.push(this._interpolationConfig.end);\n this._inInterpolation = false;\n }\n else {\n parts.push(this._readChar(true));\n }\n } while (!this._isTextEnd());\n this._endToken([this._processCarriageReturns(parts.join(''))]);\n }\n _isTextEnd() {\n if (this._cursor.peek() === $LT || this._cursor.peek() === $EOF) {\n return true;\n }\n if (this._tokenizeIcu && !this._inInterpolation) {\n if (this.isExpansionFormStart()) {\n // start of an expansion form\n return true;\n }\n if (this._cursor.peek() === $RBRACE && this._isInExpansionCase()) {\n // end of and expansion case\n return true;\n }\n }\n return false;\n }\n _readUntil(char) {\n const start = this._cursor.clone();\n this._attemptUntilChar(char);\n return this._cursor.getChars(start);\n }\n _isInExpansionCase() {\n return this._expansionCaseStack.length > 0 &&\n this._expansionCaseStack[this._expansionCaseStack.length - 1] ===\n TokenType.EXPANSION_CASE_EXP_START;\n }\n _isInExpansionForm() {\n return this._expansionCaseStack.length > 0 &&\n this._expansionCaseStack[this._expansionCaseStack.length - 1] ===\n TokenType.EXPANSION_FORM_START;\n }\n isExpansionFormStart() {\n if (this._cursor.peek() !== $LBRACE) {\n return false;\n }\n if (this._interpolationConfig) {\n const start = this._cursor.clone();\n const isInterpolation = this._attemptStr(this._interpolationConfig.start);\n this._cursor = start;\n return !isInterpolation;\n }\n return true;\n }\n}\nfunction isNotWhitespace(code) {\n return !isWhitespace(code) || code === $EOF;\n}\nfunction isNameEnd(code) {\n return isWhitespace(code) || code === $GT || code === $SLASH ||\n code === $SQ || code === $DQ || code === $EQ;\n}\nfunction isPrefixEnd(code) {\n return (code < $a || $z < code) && (code < $A || $Z < code) &&\n (code < $0 || code > $9);\n}\nfunction isDigitEntityEnd(code) {\n return code == $SEMICOLON || code == $EOF || !isAsciiHexDigit(code);\n}\nfunction isNamedEntityEnd(code) {\n return code == $SEMICOLON || code == $EOF || !isAsciiLetter(code);\n}\nfunction isExpansionCaseStart(peek) {\n return peek !== $RBRACE;\n}\nfunction compareCharCodeCaseInsensitive(code1, code2) {\n return toUpperCaseCharCode(code1) == toUpperCaseCharCode(code2);\n}\nfunction toUpperCaseCharCode(code) {\n return code >= $a && code <= $z ? code - $a + $A : code;\n}\nfunction mergeTextTokens(srcTokens) {\n const dstTokens = [];\n let lastDstToken = undefined;\n for (let i = 0; i < srcTokens.length; i++) {\n const token = srcTokens[i];\n if (lastDstToken && lastDstToken.type == TokenType.TEXT && token.type == TokenType.TEXT) {\n lastDstToken.parts[0] += token.parts[0];\n lastDstToken.sourceSpan.end = token.sourceSpan.end;\n }\n else {\n lastDstToken = token;\n dstTokens.push(lastDstToken);\n }\n }\n return dstTokens;\n}\nclass PlainCharacterCursor {\n constructor(fileOrCursor, range) {\n if (fileOrCursor instanceof PlainCharacterCursor) {\n this.file = fileOrCursor.file;\n this.input = fileOrCursor.input;\n this.end = fileOrCursor.end;\n const state = fileOrCursor.state;\n // Note: avoid using `{...fileOrCursor.state}` here as that has a severe performance penalty.\n // In ES5 bundles the object spread operator is translated into the `__assign` helper, which\n // is not optimized by VMs as efficiently as a raw object literal. Since this constructor is\n // called in tight loops, this difference matters.\n this.state = {\n peek: state.peek,\n offset: state.offset,\n line: state.line,\n column: state.column,\n };\n }\n else {\n if (!range) {\n throw new Error('Programming error: the range argument must be provided with a file argument.');\n }\n this.file = fileOrCursor;\n this.input = fileOrCursor.content;\n this.end = range.endPos;\n this.state = {\n peek: -1,\n offset: range.startPos,\n line: range.startLine,\n column: range.startCol,\n };\n }\n }\n clone() {\n return new PlainCharacterCursor(this);\n }\n peek() {\n return this.state.peek;\n }\n charsLeft() {\n return this.end - this.state.offset;\n }\n diff(other) {\n return this.state.offset - other.state.offset;\n }\n advance() {\n this.advanceState(this.state);\n }\n init() {\n this.updatePeek(this.state);\n }\n getSpan(start, leadingTriviaCodePoints) {\n start = start || this;\n let cloned = false;\n if (leadingTriviaCodePoints) {\n while (this.diff(start) > 0 && leadingTriviaCodePoints.indexOf(start.peek()) !== -1) {\n if (!cloned) {\n start = start.clone();\n cloned = true;\n }\n start.advance();\n }\n }\n return new ParseSourceSpan(new ParseLocation(start.file, start.state.offset, start.state.line, start.state.column), new ParseLocation(this.file, this.state.offset, this.state.line, this.state.column));\n }\n getChars(start) {\n return this.input.substring(start.state.offset, this.state.offset);\n }\n charAt(pos) {\n return this.input.charCodeAt(pos);\n }\n advanceState(state) {\n if (state.offset >= this.end) {\n this.state = state;\n throw new CursorError('Unexpected character \"EOF\"', this);\n }\n const currentChar = this.charAt(state.offset);\n if (currentChar === $LF) {\n state.line++;\n state.column = 0;\n }\n else if (!isNewLine(currentChar)) {\n state.column++;\n }\n state.offset++;\n this.updatePeek(state);\n }\n updatePeek(state) {\n state.peek = state.offset >= this.end ? $EOF : this.charAt(state.offset);\n }\n}\nclass EscapedCharacterCursor extends PlainCharacterCursor {\n constructor(fileOrCursor, range) {\n if (fileOrCursor instanceof EscapedCharacterCursor) {\n super(fileOrCursor);\n this.internalState = Object.assign({}, fileOrCursor.internalState);\n }\n else {\n super(fileOrCursor, range);\n this.internalState = this.state;\n }\n }\n advance() {\n this.state = this.internalState;\n super.advance();\n this.processEscapeSequence();\n }\n init() {\n super.init();\n this.processEscapeSequence();\n }\n clone() {\n return new EscapedCharacterCursor(this);\n }\n getChars(start) {\n const cursor = start.clone();\n let chars = '';\n while (cursor.internalState.offset < this.internalState.offset) {\n chars += String.fromCodePoint(cursor.peek());\n cursor.advance();\n }\n return chars;\n }\n /**\n * Process the escape sequence that starts at the current position in the text.\n *\n * This method is called to ensure that `peek` has the unescaped value of escape sequences.\n */\n processEscapeSequence() {\n const peek = () => this.internalState.peek;\n if (peek() === $BACKSLASH) {\n // We have hit an escape sequence so we need the internal state to become independent\n // of the external state.\n this.internalState = Object.assign({}, this.state);\n // Move past the backslash\n this.advanceState(this.internalState);\n // First check for standard control char sequences\n if (peek() === $n) {\n this.state.peek = $LF;\n }\n else if (peek() === $r) {\n this.state.peek = $CR;\n }\n else if (peek() === $v) {\n this.state.peek = $VTAB;\n }\n else if (peek() === $t) {\n this.state.peek = $TAB;\n }\n else if (peek() === $b) {\n this.state.peek = $BSPACE;\n }\n else if (peek() === $f) {\n this.state.peek = $FF;\n }\n // Now consider more complex sequences\n else if (peek() === $u) {\n // Unicode code-point sequence\n this.advanceState(this.internalState); // advance past the `u` char\n if (peek() === $LBRACE) {\n // Variable length Unicode, e.g. `\\x{123}`\n this.advanceState(this.internalState); // advance past the `{` char\n // Advance past the variable number of hex digits until we hit a `}` char\n const digitStart = this.clone();\n let length = 0;\n while (peek() !== $RBRACE) {\n this.advanceState(this.internalState);\n length++;\n }\n this.state.peek = this.decodeHexDigits(digitStart, length);\n }\n else {\n // Fixed length Unicode, e.g. `\\u1234`\n const digitStart = this.clone();\n this.advanceState(this.internalState);\n this.advanceState(this.internalState);\n this.advanceState(this.internalState);\n this.state.peek = this.decodeHexDigits(digitStart, 4);\n }\n }\n else if (peek() === $x) {\n // Hex char code, e.g. `\\x2F`\n this.advanceState(this.internalState); // advance past the `x` char\n const digitStart = this.clone();\n this.advanceState(this.internalState);\n this.state.peek = this.decodeHexDigits(digitStart, 2);\n }\n else if (isOctalDigit(peek())) {\n // Octal char code, e.g. `\\012`,\n let octal = '';\n let length = 0;\n let previous = this.clone();\n while (isOctalDigit(peek()) && length < 3) {\n previous = this.clone();\n octal += String.fromCodePoint(peek());\n this.advanceState(this.internalState);\n length++;\n }\n this.state.peek = parseInt(octal, 8);\n // Backup one char\n this.internalState = previous.internalState;\n }\n else if (isNewLine(this.internalState.peek)) {\n // Line continuation `\\` followed by a new line\n this.advanceState(this.internalState); // advance over the newline\n this.state = this.internalState;\n }\n else {\n // If none of the `if` blocks were executed then we just have an escaped normal character.\n // In that case we just, effectively, skip the backslash from the character.\n this.state.peek = this.internalState.peek;\n }\n }\n }\n decodeHexDigits(start, length) {\n const hex = this.input.substr(start.internalState.offset, length);\n const charCode = parseInt(hex, 16);\n if (!isNaN(charCode)) {\n return charCode;\n }\n else {\n start.state = start.internalState;\n throw new CursorError('Invalid hexadecimal escape sequence', start);\n }\n }\n}\nclass CursorError {\n constructor(msg, cursor) {\n this.msg = msg;\n this.cursor = cursor;\n }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass TreeError extends ParseError {\n constructor(elementName, span, msg) {\n super(span, msg);\n this.elementName = elementName;\n }\n static create(elementName, span, msg) {\n return new TreeError(elementName, span, msg);\n }\n}\nclass ParseTreeResult {\n constructor(rootNodes, errors) {\n this.rootNodes = rootNodes;\n this.errors = errors;\n }\n}\nclass Parser {\n constructor(getTagDefinition) {\n this.getTagDefinition = getTagDefinition;\n }\n parse(source, url, options) {\n const tokenizeResult = tokenize(source, url, this.getTagDefinition, options);\n const parser = new _TreeBuilder(tokenizeResult.tokens, this.getTagDefinition);\n parser.build();\n return new ParseTreeResult(parser.rootNodes, tokenizeResult.errors.concat(parser.errors));\n }\n}\nclass _TreeBuilder {\n constructor(tokens, getTagDefinition) {\n this.tokens = tokens;\n this.getTagDefinition = getTagDefinition;\n this._index = -1;\n this._elementStack = [];\n this.rootNodes = [];\n this.errors = [];\n this._advance();\n }\n build() {\n while (this._peek.type !== TokenType.EOF) {\n if (this._peek.type === TokenType.TAG_OPEN_START) {\n this._consumeStartTag(this._advance());\n }\n else if (this._peek.type === TokenType.TAG_CLOSE) {\n this._consumeEndTag(this._advance());\n }\n else if (this._peek.type === TokenType.CDATA_START) {\n this._closeVoidElement();\n this._consumeCdata(this._advance());\n }\n else if (this._peek.type === TokenType.COMMENT_START) {\n this._closeVoidElement();\n this._consumeComment(this._advance());\n }\n else if (this._peek.type === TokenType.TEXT || this._peek.type === TokenType.RAW_TEXT ||\n this._peek.type === TokenType.ESCAPABLE_RAW_TEXT) {\n this._closeVoidElement();\n this._consumeText(this._advance());\n }\n else if (this._peek.type === TokenType.EXPANSION_FORM_START) {\n this._consumeExpansion(this._advance());\n }\n else {\n // Skip all other tokens...\n this._advance();\n }\n }\n }\n _advance() {\n const prev = this._peek;\n if (this._index < this.tokens.length - 1) {\n // Note: there is always an EOF token at the end\n this._index++;\n }\n this._peek = this.tokens[this._index];\n return prev;\n }\n _advanceIf(type) {\n if (this._peek.type === type) {\n return this._advance();\n }\n return null;\n }\n _consumeCdata(_startToken) {\n this._consumeText(this._advance());\n this._advanceIf(TokenType.CDATA_END);\n }\n _consumeComment(token) {\n const text = this._advanceIf(TokenType.RAW_TEXT);\n this._advanceIf(TokenType.COMMENT_END);\n const value = text != null ? text.parts[0].trim() : null;\n this._addToParent(new Comment(value, token.sourceSpan));\n }\n _consumeExpansion(token) {\n const switchValue = this._advance();\n const type = this._advance();\n const cases = [];\n // read =\n while (this._peek.type === TokenType.EXPANSION_CASE_VALUE) {\n const expCase = this._parseExpansionCase();\n if (!expCase)\n return; // error\n cases.push(expCase);\n }\n // read the final }\n if (this._peek.type !== TokenType.EXPANSION_FORM_END) {\n this.errors.push(TreeError.create(null, this._peek.sourceSpan, `Invalid ICU message. Missing '}'.`));\n return;\n }\n const sourceSpan = new ParseSourceSpan(token.sourceSpan.start, this._peek.sourceSpan.end);\n this._addToParent(new Expansion(switchValue.parts[0], type.parts[0], cases, sourceSpan, switchValue.sourceSpan));\n this._advance();\n }\n _parseExpansionCase() {\n const value = this._advance();\n // read {\n if (this._peek.type !== TokenType.EXPANSION_CASE_EXP_START) {\n this.errors.push(TreeError.create(null, this._peek.sourceSpan, `Invalid ICU message. Missing '{'.`));\n return null;\n }\n // read until }\n const start = this._advance();\n const exp = this._collectExpansionExpTokens(start);\n if (!exp)\n return null;\n const end = this._advance();\n exp.push(new Token(TokenType.EOF, [], end.sourceSpan));\n // parse everything in between { and }\n const expansionCaseParser = new _TreeBuilder(exp, this.getTagDefinition);\n expansionCaseParser.build();\n if (expansionCaseParser.errors.length > 0) {\n this.errors = this.errors.concat(expansionCaseParser.errors);\n return null;\n }\n const sourceSpan = new ParseSourceSpan(value.sourceSpan.start, end.sourceSpan.end);\n const expSourceSpan = new ParseSourceSpan(start.sourceSpan.start, end.sourceSpan.end);\n return new ExpansionCase(value.parts[0], expansionCaseParser.rootNodes, sourceSpan, value.sourceSpan, expSourceSpan);\n }\n _collectExpansionExpTokens(start) {\n const exp = [];\n const expansionFormStack = [TokenType.EXPANSION_CASE_EXP_START];\n while (true) {\n if (this._peek.type === TokenType.EXPANSION_FORM_START ||\n this._peek.type === TokenType.EXPANSION_CASE_EXP_START) {\n expansionFormStack.push(this._peek.type);\n }\n if (this._peek.type === TokenType.EXPANSION_CASE_EXP_END) {\n if (lastOnStack(expansionFormStack, TokenType.EXPANSION_CASE_EXP_START)) {\n expansionFormStack.pop();\n if (expansionFormStack.length == 0)\n return exp;\n }\n else {\n this.errors.push(TreeError.create(null, start.sourceSpan, `Invalid ICU message. Missing '}'.`));\n return null;\n }\n }\n if (this._peek.type === TokenType.EXPANSION_FORM_END) {\n if (lastOnStack(expansionFormStack, TokenType.EXPANSION_FORM_START)) {\n expansionFormStack.pop();\n }\n else {\n this.errors.push(TreeError.create(null, start.sourceSpan, `Invalid ICU message. Missing '}'.`));\n return null;\n }\n }\n if (this._peek.type === TokenType.EOF) {\n this.errors.push(TreeError.create(null, start.sourceSpan, `Invalid ICU message. Missing '}'.`));\n return null;\n }\n exp.push(this._advance());\n }\n }\n _consumeText(token) {\n let text = token.parts[0];\n if (text.length > 0 && text[0] == '\\n') {\n const parent = this._getParentElement();\n if (parent != null && parent.children.length == 0 &&\n this.getTagDefinition(parent.name).ignoreFirstLf) {\n text = text.substring(1);\n }\n }\n if (text.length > 0) {\n this._addToParent(new Text$3(text, token.sourceSpan));\n }\n }\n _closeVoidElement() {\n const el = this._getParentElement();\n if (el && this.getTagDefinition(el.name).isVoid) {\n this._elementStack.pop();\n }\n }\n _consumeStartTag(startTagToken) {\n const prefix = startTagToken.parts[0];\n const name = startTagToken.parts[1];\n const attrs = [];\n while (this._peek.type === TokenType.ATTR_NAME) {\n attrs.push(this._consumeAttr(this._advance()));\n }\n const fullName = this._getElementFullName(prefix, name, this._getParentElement());\n let selfClosing = false;\n // Note: There could have been a tokenizer error\n // so that we don't get a token for the end tag...\n if (this._peek.type === TokenType.TAG_OPEN_END_VOID) {\n this._advance();\n selfClosing = true;\n const tagDef = this.getTagDefinition(fullName);\n if (!(tagDef.canSelfClose || getNsPrefix(fullName) !== null || tagDef.isVoid)) {\n this.errors.push(TreeError.create(fullName, startTagToken.sourceSpan, `Only void and foreign elements can be self closed \"${startTagToken.parts[1]}\"`));\n }\n }\n else if (this._peek.type === TokenType.TAG_OPEN_END) {\n this._advance();\n selfClosing = false;\n }\n const end = this._peek.sourceSpan.start;\n const span = new ParseSourceSpan(startTagToken.sourceSpan.start, end);\n const el = new Element$1(fullName, attrs, [], span, span, undefined);\n this._pushElement(el);\n if (selfClosing) {\n // Elements that are self-closed have their `endSourceSpan` set to the full span, as the\n // element start tag also represents the end tag.\n this._popElement(fullName, span);\n }\n }\n _pushElement(el) {\n const parentEl = this._getParentElement();\n if (parentEl && this.getTagDefinition(parentEl.name).isClosedByChild(el.name)) {\n this._elementStack.pop();\n }\n this._addToParent(el);\n this._elementStack.push(el);\n }\n _consumeEndTag(endTagToken) {\n const fullName = this._getElementFullName(endTagToken.parts[0], endTagToken.parts[1], this._getParentElement());\n if (this.getTagDefinition(fullName).isVoid) {\n this.errors.push(TreeError.create(fullName, endTagToken.sourceSpan, `Void elements do not have end tags \"${endTagToken.parts[1]}\"`));\n }\n else if (!this._popElement(fullName, endTagToken.sourceSpan)) {\n const errMsg = `Unexpected closing tag \"${fullName}\". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags`;\n this.errors.push(TreeError.create(fullName, endTagToken.sourceSpan, errMsg));\n }\n }\n _popElement(fullName, endSourceSpan) {\n for (let stackIndex = this._elementStack.length - 1; stackIndex >= 0; stackIndex--) {\n const el = this._elementStack[stackIndex];\n if (el.name == fullName) {\n // Record the parse span with the element that is being closed. Any elements that are\n // removed from the element stack at this point are closed implicitly, so they won't get\n // an end source span (as there is no explicit closing element).\n el.endSourceSpan = endSourceSpan;\n this._elementStack.splice(stackIndex, this._elementStack.length - stackIndex);\n return true;\n }\n if (!this.getTagDefinition(el.name).closedByParent) {\n return false;\n }\n }\n return false;\n }\n _consumeAttr(attrName) {\n const fullName = mergeNsAndName(attrName.parts[0], attrName.parts[1]);\n let end = attrName.sourceSpan.end;\n let value = '';\n let valueSpan = undefined;\n if (this._peek.type === TokenType.ATTR_QUOTE) {\n this._advance();\n }\n if (this._peek.type === TokenType.ATTR_VALUE) {\n const valueToken = this._advance();\n value = valueToken.parts[0];\n end = valueToken.sourceSpan.end;\n valueSpan = valueToken.sourceSpan;\n }\n if (this._peek.type === TokenType.ATTR_QUOTE) {\n const quoteToken = this._advance();\n end = quoteToken.sourceSpan.end;\n }\n return new Attribute(fullName, value, new ParseSourceSpan(attrName.sourceSpan.start, end), valueSpan);\n }\n _getParentElement() {\n return this._elementStack.length > 0 ? this._elementStack[this._elementStack.length - 1] : null;\n }\n _addToParent(node) {\n const parent = this._getParentElement();\n if (parent != null) {\n parent.children.push(node);\n }\n else {\n this.rootNodes.push(node);\n }\n }\n _getElementFullName(prefix, localName, parentElement) {\n if (prefix === '') {\n prefix = this.getTagDefinition(localName).implicitNamespacePrefix || '';\n if (prefix === '' && parentElement != null) {\n const parentTagName = splitNsName(parentElement.name)[1];\n const parentTagDefinition = this.getTagDefinition(parentTagName);\n if (!parentTagDefinition.preventNamespaceInheritance) {\n prefix = getNsPrefix(parentElement.name);\n }\n }\n }\n return mergeNsAndName(prefix, localName);\n }\n}\nfunction lastOnStack(stack, element) {\n return stack.length > 0 && stack[stack.length - 1] === element;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass HtmlParser extends Parser {\n constructor() {\n super(getHtmlTagDefinition);\n }\n parse(source, url, options) {\n return super.parse(source, url, options);\n }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst PRESERVE_WS_ATTR_NAME = 'ngPreserveWhitespaces';\nconst SKIP_WS_TRIM_TAGS = new Set(['pre', 'template', 'textarea', 'script', 'style']);\n// Equivalent to \\s with \\u00a0 (non-breaking space) excluded.\n// Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp\nconst WS_CHARS = ' \\f\\n\\r\\t\\v\\u1680\\u180e\\u2000-\\u200a\\u2028\\u2029\\u202f\\u205f\\u3000\\ufeff';\nconst NO_WS_REGEXP = new RegExp(`[^${WS_CHARS}]`);\nconst WS_REPLACE_REGEXP = new RegExp(`[${WS_CHARS}]{2,}`, 'g');\nfunction hasPreserveWhitespacesAttr(attrs) {\n return attrs.some((attr) => attr.name === PRESERVE_WS_ATTR_NAME);\n}\n/**\n * Angular Dart introduced &ngsp; as a placeholder for non-removable space, see:\n * https://github.com/dart-lang/angular/blob/0bb611387d29d65b5af7f9d2515ab571fd3fbee4/_tests/test/compiler/preserve_whitespace_test.dart#L25-L32\n * In Angular Dart &ngsp; is converted to the 0xE500 PUA (Private Use Areas) unicode character\n * and later on replaced by a space. We are re-implementing the same idea here.\n */\nfunction replaceNgsp(value) {\n // lexer is replacing the &ngsp; pseudo-entity with NGSP_UNICODE\n return value.replace(new RegExp(NGSP_UNICODE, 'g'), ' ');\n}\n/**\n * This visitor can walk HTML parse tree and remove / trim text nodes using the following rules:\n * - consider spaces, tabs and new lines as whitespace characters;\n * - drop text nodes consisting of whitespace characters only;\n * - for all other text nodes replace consecutive whitespace characters with one space;\n * - convert &ngsp; pseudo-entity to a single space;\n *\n * Removal and trimming of whitespaces have positive performance impact (less code to generate\n * while compiling templates, faster view creation). At the same time it can be \"destructive\"\n * in some cases (whitespaces can influence layout). Because of the potential of breaking layout\n * this visitor is not activated by default in Angular 5 and people need to explicitly opt-in for\n * whitespace removal. The default option for whitespace removal will be revisited in Angular 6\n * and might be changed to \"on\" by default.\n */\nclass WhitespaceVisitor {\n visitElement(element, context) {\n if (SKIP_WS_TRIM_TAGS.has(element.name) || hasPreserveWhitespacesAttr(element.attrs)) {\n // don't descent into elements where we need to preserve whitespaces\n // but still visit all attributes to eliminate one used as a market to preserve WS\n return new Element$1(element.name, visitAll$1(this, element.attrs), element.children, element.sourceSpan, element.startSourceSpan, element.endSourceSpan, element.i18n);\n }\n return new Element$1(element.name, element.attrs, visitAllWithSiblings(this, element.children), element.sourceSpan, element.startSourceSpan, element.endSourceSpan, element.i18n);\n }\n visitAttribute(attribute, context) {\n return attribute.name !== PRESERVE_WS_ATTR_NAME ? attribute : null;\n }\n visitText(text, context) {\n const isNotBlank = text.value.match(NO_WS_REGEXP);\n const hasExpansionSibling = context &&\n (context.prev instanceof Expansion || context.next instanceof Expansion);\n if (isNotBlank || hasExpansionSibling) {\n return new Text$3(replaceNgsp(text.value).replace(WS_REPLACE_REGEXP, ' '), text.sourceSpan, text.i18n);\n }\n return null;\n }\n visitComment(comment, context) {\n return comment;\n }\n visitExpansion(expansion, context) {\n return expansion;\n }\n visitExpansionCase(expansionCase, context) {\n return expansionCase;\n }\n}\nfunction removeWhitespaces(htmlAstWithErrors) {\n return new ParseTreeResult(visitAll$1(new WhitespaceVisitor(), htmlAstWithErrors.rootNodes), htmlAstWithErrors.errors);\n}\nfunction visitAllWithSiblings(visitor, nodes) {\n const result = [];\n nodes.forEach((ast, i) => {\n const context = { prev: nodes[i - 1], next: nodes[i + 1] };\n const astResult = ast.visit(visitor, context);\n if (astResult) {\n result.push(astResult);\n }\n });\n return result;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// http://cldr.unicode.org/index/cldr-spec/plural-rules\nconst PLURAL_CASES = ['zero', 'one', 'two', 'few', 'many', 'other'];\n/**\n * Expands special forms into elements.\n *\n * For example,\n *\n * ```\n * { messages.length, plural,\n * =0 {zero}\n * =1 {one}\n * other {more than one}\n * }\n * ```\n *\n * will be expanded into\n *\n * ```\n * \n * zero\n * one\n * more than one\n * \n * ```\n */\nfunction expandNodes(nodes) {\n const expander = new _Expander();\n return new ExpansionResult(visitAll$1(expander, nodes), expander.isExpanded, expander.errors);\n}\nclass ExpansionResult {\n constructor(nodes, expanded, errors) {\n this.nodes = nodes;\n this.expanded = expanded;\n this.errors = errors;\n }\n}\nclass ExpansionError extends ParseError {\n constructor(span, errorMsg) {\n super(span, errorMsg);\n }\n}\n/**\n * Expand expansion forms (plural, select) to directives\n *\n * @internal\n */\nclass _Expander {\n constructor() {\n this.isExpanded = false;\n this.errors = [];\n }\n visitElement(element, context) {\n return new Element$1(element.name, element.attrs, visitAll$1(this, element.children), element.sourceSpan, element.startSourceSpan, element.endSourceSpan);\n }\n visitAttribute(attribute, context) {\n return attribute;\n }\n visitText(text, context) {\n return text;\n }\n visitComment(comment, context) {\n return comment;\n }\n visitExpansion(icu, context) {\n this.isExpanded = true;\n return icu.type == 'plural' ? _expandPluralForm(icu, this.errors) :\n _expandDefaultForm(icu, this.errors);\n }\n visitExpansionCase(icuCase, context) {\n throw new Error('Should not be reached');\n }\n}\n// Plural forms are expanded to `NgPlural` and `NgPluralCase`s\nfunction _expandPluralForm(ast, errors) {\n const children = ast.cases.map(c => {\n if (PLURAL_CASES.indexOf(c.value) == -1 && !c.value.match(/^=\\d+$/)) {\n errors.push(new ExpansionError(c.valueSourceSpan, `Plural cases should be \"=\" or one of ${PLURAL_CASES.join(', ')}`));\n }\n const expansionResult = expandNodes(c.expression);\n errors.push(...expansionResult.errors);\n return new Element$1(`ng-template`, [new Attribute('ngPluralCase', `${c.value}`, c.valueSourceSpan)], expansionResult.nodes, c.sourceSpan, c.sourceSpan, c.sourceSpan);\n });\n const switchAttr = new Attribute('[ngPlural]', ast.switchValue, ast.switchValueSourceSpan);\n return new Element$1('ng-container', [switchAttr], children, ast.sourceSpan, ast.sourceSpan, ast.sourceSpan);\n}\n// ICU messages (excluding plural form) are expanded to `NgSwitch` and `NgSwitchCase`s\nfunction _expandDefaultForm(ast, errors) {\n const children = ast.cases.map(c => {\n const expansionResult = expandNodes(c.expression);\n errors.push(...expansionResult.errors);\n if (c.value === 'other') {\n // other is the default case when no values match\n return new Element$1(`ng-template`, [new Attribute('ngSwitchDefault', '', c.valueSourceSpan)], expansionResult.nodes, c.sourceSpan, c.sourceSpan, c.sourceSpan);\n }\n return new Element$1(`ng-template`, [new Attribute('ngSwitchCase', `${c.value}`, c.valueSourceSpan)], expansionResult.nodes, c.sourceSpan, c.sourceSpan, c.sourceSpan);\n });\n const switchAttr = new Attribute('[ngSwitch]', ast.switchValue, ast.switchValueSourceSpan);\n return new Element$1('ng-container', [switchAttr], children, ast.sourceSpan, ast.sourceSpan, ast.sourceSpan);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * A segment of text within the template.\n */\nclass TextAst {\n constructor(value, ngContentIndex, sourceSpan) {\n this.value = value;\n this.ngContentIndex = ngContentIndex;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitText(this, context);\n }\n}\n/**\n * A bound expression within the text of a template.\n */\nclass BoundTextAst {\n constructor(value, ngContentIndex, sourceSpan) {\n this.value = value;\n this.ngContentIndex = ngContentIndex;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitBoundText(this, context);\n }\n}\n/**\n * A plain attribute on an element.\n */\nclass AttrAst {\n constructor(name, value, sourceSpan) {\n this.name = name;\n this.value = value;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitAttr(this, context);\n }\n}\nconst BoundPropertyMapping = {\n [4 /* Animation */]: 4 /* Animation */,\n [1 /* Attribute */]: 1 /* Attribute */,\n [2 /* Class */]: 2 /* Class */,\n [0 /* Property */]: 0 /* Property */,\n [3 /* Style */]: 3 /* Style */,\n};\n/**\n * A binding for an element property (e.g. `[property]=\"expression\"`) or an animation trigger (e.g.\n * `[@trigger]=\"stateExp\"`)\n */\nclass BoundElementPropertyAst {\n constructor(name, type, securityContext, value, unit, sourceSpan) {\n this.name = name;\n this.type = type;\n this.securityContext = securityContext;\n this.value = value;\n this.unit = unit;\n this.sourceSpan = sourceSpan;\n this.isAnimation = this.type === 4 /* Animation */;\n }\n static fromBoundProperty(prop) {\n const type = BoundPropertyMapping[prop.type];\n return new BoundElementPropertyAst(prop.name, type, prop.securityContext, prop.value, prop.unit, prop.sourceSpan);\n }\n visit(visitor, context) {\n return visitor.visitElementProperty(this, context);\n }\n}\n/**\n * A binding for an element event (e.g. `(event)=\"handler()\"`) or an animation trigger event (e.g.\n * `(@trigger.phase)=\"callback($event)\"`).\n */\nclass BoundEventAst {\n constructor(name, target, phase, handler, sourceSpan, handlerSpan) {\n this.name = name;\n this.target = target;\n this.phase = phase;\n this.handler = handler;\n this.sourceSpan = sourceSpan;\n this.handlerSpan = handlerSpan;\n this.fullName = BoundEventAst.calcFullName(this.name, this.target, this.phase);\n this.isAnimation = !!this.phase;\n }\n static calcFullName(name, target, phase) {\n if (target) {\n return `${target}:${name}`;\n }\n if (phase) {\n return `@${name}.${phase}`;\n }\n return name;\n }\n static fromParsedEvent(event) {\n const target = event.type === 0 /* Regular */ ? event.targetOrPhase : null;\n const phase = event.type === 1 /* Animation */ ? event.targetOrPhase : null;\n return new BoundEventAst(event.name, target, phase, event.handler, event.sourceSpan, event.handlerSpan);\n }\n visit(visitor, context) {\n return visitor.visitEvent(this, context);\n }\n}\n/**\n * A reference declaration on an element (e.g. `let someName=\"expression\"`).\n */\nclass ReferenceAst {\n constructor(name, value, originalValue, sourceSpan) {\n this.name = name;\n this.value = value;\n this.originalValue = originalValue;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitReference(this, context);\n }\n}\n/**\n * A variable declaration on a (e.g. `var-someName=\"someLocalName\"`).\n */\nclass VariableAst {\n constructor(name, value, sourceSpan, valueSpan) {\n this.name = name;\n this.value = value;\n this.sourceSpan = sourceSpan;\n this.valueSpan = valueSpan;\n }\n static fromParsedVariable(v) {\n return new VariableAst(v.name, v.value, v.sourceSpan, v.valueSpan);\n }\n visit(visitor, context) {\n return visitor.visitVariable(this, context);\n }\n}\n/**\n * An element declaration in a template.\n */\nclass ElementAst {\n constructor(name, attrs, inputs, outputs, references, directives, providers, hasViewContainer, queryMatches, children, ngContentIndex, sourceSpan, endSourceSpan) {\n this.name = name;\n this.attrs = attrs;\n this.inputs = inputs;\n this.outputs = outputs;\n this.references = references;\n this.directives = directives;\n this.providers = providers;\n this.hasViewContainer = hasViewContainer;\n this.queryMatches = queryMatches;\n this.children = children;\n this.ngContentIndex = ngContentIndex;\n this.sourceSpan = sourceSpan;\n this.endSourceSpan = endSourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitElement(this, context);\n }\n}\n/**\n * A `` element included in an Angular template.\n */\nclass EmbeddedTemplateAst {\n constructor(attrs, outputs, references, variables, directives, providers, hasViewContainer, queryMatches, children, ngContentIndex, sourceSpan) {\n this.attrs = attrs;\n this.outputs = outputs;\n this.references = references;\n this.variables = variables;\n this.directives = directives;\n this.providers = providers;\n this.hasViewContainer = hasViewContainer;\n this.queryMatches = queryMatches;\n this.children = children;\n this.ngContentIndex = ngContentIndex;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitEmbeddedTemplate(this, context);\n }\n}\n/**\n * A directive property with a bound value (e.g. `*ngIf=\"condition\").\n */\nclass BoundDirectivePropertyAst {\n constructor(directiveName, templateName, value, sourceSpan) {\n this.directiveName = directiveName;\n this.templateName = templateName;\n this.value = value;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitDirectiveProperty(this, context);\n }\n}\n/**\n * A directive declared on an element.\n */\nclass DirectiveAst {\n constructor(directive, inputs, hostProperties, hostEvents, contentQueryStartId, sourceSpan) {\n this.directive = directive;\n this.inputs = inputs;\n this.hostProperties = hostProperties;\n this.hostEvents = hostEvents;\n this.contentQueryStartId = contentQueryStartId;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitDirective(this, context);\n }\n}\n/**\n * A provider declared on an element\n */\nclass ProviderAst {\n constructor(token, multiProvider, eager, providers, providerType, lifecycleHooks, sourceSpan, isModule) {\n this.token = token;\n this.multiProvider = multiProvider;\n this.eager = eager;\n this.providers = providers;\n this.providerType = providerType;\n this.lifecycleHooks = lifecycleHooks;\n this.sourceSpan = sourceSpan;\n this.isModule = isModule;\n }\n visit(visitor, context) {\n // No visit method in the visitor for now...\n return null;\n }\n}\nvar ProviderAstType;\n(function (ProviderAstType) {\n ProviderAstType[ProviderAstType[\"PublicService\"] = 0] = \"PublicService\";\n ProviderAstType[ProviderAstType[\"PrivateService\"] = 1] = \"PrivateService\";\n ProviderAstType[ProviderAstType[\"Component\"] = 2] = \"Component\";\n ProviderAstType[ProviderAstType[\"Directive\"] = 3] = \"Directive\";\n ProviderAstType[ProviderAstType[\"Builtin\"] = 4] = \"Builtin\";\n})(ProviderAstType || (ProviderAstType = {}));\n/**\n * Position where content is to be projected (instance of `` in a template).\n */\nclass NgContentAst {\n constructor(index, ngContentIndex, sourceSpan) {\n this.index = index;\n this.ngContentIndex = ngContentIndex;\n this.sourceSpan = sourceSpan;\n }\n visit(visitor, context) {\n return visitor.visitNgContent(this, context);\n }\n}\n/**\n * A visitor that accepts each node but doesn't do anything. It is intended to be used\n * as the base class for a visitor that is only interested in a subset of the node types.\n */\nclass NullTemplateVisitor {\n visitNgContent(ast, context) { }\n visitEmbeddedTemplate(ast, context) { }\n visitElement(ast, context) { }\n visitReference(ast, context) { }\n visitVariable(ast, context) { }\n visitEvent(ast, context) { }\n visitElementProperty(ast, context) { }\n visitAttr(ast, context) { }\n visitBoundText(ast, context) { }\n visitText(ast, context) { }\n visitDirective(ast, context) { }\n visitDirectiveProperty(ast, context) { }\n}\n/**\n * Base class that can be used to build a visitor that visits each node\n * in an template ast recursively.\n */\nclass RecursiveTemplateAstVisitor extends NullTemplateVisitor {\n constructor() {\n super();\n }\n // Nodes with children\n visitEmbeddedTemplate(ast, context) {\n return this.visitChildren(context, visit => {\n visit(ast.attrs);\n visit(ast.references);\n visit(ast.variables);\n visit(ast.directives);\n visit(ast.providers);\n visit(ast.children);\n });\n }\n visitElement(ast, context) {\n return this.visitChildren(context, visit => {\n visit(ast.attrs);\n visit(ast.inputs);\n visit(ast.outputs);\n visit(ast.references);\n visit(ast.directives);\n visit(ast.providers);\n visit(ast.children);\n });\n }\n visitDirective(ast, context) {\n return this.visitChildren(context, visit => {\n visit(ast.inputs);\n visit(ast.hostProperties);\n visit(ast.hostEvents);\n });\n }\n visitChildren(context, cb) {\n let results = [];\n let t = this;\n function visit(children) {\n if (children && children.length)\n results.push(templateVisitAll(t, children, context));\n }\n cb(visit);\n return Array.prototype.concat.apply([], results);\n }\n}\n/**\n * Visit every node in a list of {@link TemplateAst}s with the given {@link TemplateAstVisitor}.\n */\nfunction templateVisitAll(visitor, asts, context = null) {\n const result = [];\n const visit = visitor.visit ?\n (ast) => visitor.visit(ast, context) || ast.visit(visitor, context) :\n (ast) => ast.visit(visitor, context);\n asts.forEach(ast => {\n const astResult = visit(ast);\n if (astResult) {\n result.push(astResult);\n }\n });\n return result;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass ProviderError extends ParseError {\n constructor(message, span) {\n super(span, message);\n }\n}\nclass ProviderViewContext {\n constructor(reflector, component) {\n this.reflector = reflector;\n this.component = component;\n this.errors = [];\n this.viewQueries = _getViewQueries(component);\n this.viewProviders = new Map();\n component.viewProviders.forEach((provider) => {\n if (this.viewProviders.get(tokenReference(provider.token)) == null) {\n this.viewProviders.set(tokenReference(provider.token), true);\n }\n });\n }\n}\nclass ProviderElementContext {\n constructor(viewContext, _parent, _isViewRoot, _directiveAsts, attrs, refs, isTemplate, contentQueryStartId, _sourceSpan) {\n this.viewContext = viewContext;\n this._parent = _parent;\n this._isViewRoot = _isViewRoot;\n this._directiveAsts = _directiveAsts;\n this._sourceSpan = _sourceSpan;\n this._transformedProviders = new Map();\n this._seenProviders = new Map();\n this._queriedTokens = new Map();\n this.transformedHasViewContainer = false;\n this._attrs = {};\n attrs.forEach((attrAst) => this._attrs[attrAst.name] = attrAst.value);\n const directivesMeta = _directiveAsts.map(directiveAst => directiveAst.directive);\n this._allProviders =\n _resolveProvidersFromDirectives(directivesMeta, _sourceSpan, viewContext.errors);\n this._contentQueries = _getContentQueries(contentQueryStartId, directivesMeta);\n Array.from(this._allProviders.values()).forEach((provider) => {\n this._addQueryReadsTo(provider.token, provider.token, this._queriedTokens);\n });\n if (isTemplate) {\n const templateRefId = createTokenForExternalReference(this.viewContext.reflector, Identifiers.TemplateRef);\n this._addQueryReadsTo(templateRefId, templateRefId, this._queriedTokens);\n }\n refs.forEach((refAst) => {\n let defaultQueryValue = refAst.value ||\n createTokenForExternalReference(this.viewContext.reflector, Identifiers.ElementRef);\n this._addQueryReadsTo({ value: refAst.name }, defaultQueryValue, this._queriedTokens);\n });\n if (this._queriedTokens.get(this.viewContext.reflector.resolveExternalReference(Identifiers.ViewContainerRef))) {\n this.transformedHasViewContainer = true;\n }\n // create the providers that we know are eager first\n Array.from(this._allProviders.values()).forEach((provider) => {\n const eager = provider.eager || this._queriedTokens.get(tokenReference(provider.token));\n if (eager) {\n this._getOrCreateLocalProvider(provider.providerType, provider.token, true);\n }\n });\n }\n afterElement() {\n // collect lazy providers\n Array.from(this._allProviders.values()).forEach((provider) => {\n this._getOrCreateLocalProvider(provider.providerType, provider.token, false);\n });\n }\n get transformProviders() {\n // Note: Maps keep their insertion order.\n const lazyProviders = [];\n const eagerProviders = [];\n this._transformedProviders.forEach(provider => {\n if (provider.eager) {\n eagerProviders.push(provider);\n }\n else {\n lazyProviders.push(provider);\n }\n });\n return lazyProviders.concat(eagerProviders);\n }\n get transformedDirectiveAsts() {\n const sortedProviderTypes = this.transformProviders.map(provider => provider.token.identifier);\n const sortedDirectives = this._directiveAsts.slice();\n sortedDirectives.sort((dir1, dir2) => sortedProviderTypes.indexOf(dir1.directive.type) -\n sortedProviderTypes.indexOf(dir2.directive.type));\n return sortedDirectives;\n }\n get queryMatches() {\n const allMatches = [];\n this._queriedTokens.forEach((matches) => {\n allMatches.push(...matches);\n });\n return allMatches;\n }\n _addQueryReadsTo(token, defaultValue, queryReadTokens) {\n this._getQueriesFor(token).forEach((query) => {\n const queryValue = query.meta.read || defaultValue;\n const tokenRef = tokenReference(queryValue);\n let queryMatches = queryReadTokens.get(tokenRef);\n if (!queryMatches) {\n queryMatches = [];\n queryReadTokens.set(tokenRef, queryMatches);\n }\n queryMatches.push({ queryId: query.queryId, value: queryValue });\n });\n }\n _getQueriesFor(token) {\n const result = [];\n let currentEl = this;\n let distance = 0;\n let queries;\n while (currentEl !== null) {\n queries = currentEl._contentQueries.get(tokenReference(token));\n if (queries) {\n result.push(...queries.filter((query) => query.meta.descendants || distance <= 1));\n }\n if (currentEl._directiveAsts.length > 0) {\n distance++;\n }\n currentEl = currentEl._parent;\n }\n queries = this.viewContext.viewQueries.get(tokenReference(token));\n if (queries) {\n result.push(...queries);\n }\n return result;\n }\n _getOrCreateLocalProvider(requestingProviderType, token, eager) {\n const resolvedProvider = this._allProviders.get(tokenReference(token));\n if (!resolvedProvider ||\n ((requestingProviderType === ProviderAstType.Directive ||\n requestingProviderType === ProviderAstType.PublicService) &&\n resolvedProvider.providerType === ProviderAstType.PrivateService) ||\n ((requestingProviderType === ProviderAstType.PrivateService ||\n requestingProviderType === ProviderAstType.PublicService) &&\n resolvedProvider.providerType === ProviderAstType.Builtin)) {\n return null;\n }\n let transformedProviderAst = this._transformedProviders.get(tokenReference(token));\n if (transformedProviderAst) {\n return transformedProviderAst;\n }\n if (this._seenProviders.get(tokenReference(token)) != null) {\n this.viewContext.errors.push(new ProviderError(`Cannot instantiate cyclic dependency! ${tokenName(token)}`, this._sourceSpan));\n return null;\n }\n this._seenProviders.set(tokenReference(token), true);\n const transformedProviders = resolvedProvider.providers.map((provider) => {\n let transformedUseValue = provider.useValue;\n let transformedUseExisting = provider.useExisting;\n let transformedDeps = undefined;\n if (provider.useExisting != null) {\n const existingDiDep = this._getDependency(resolvedProvider.providerType, { token: provider.useExisting }, eager);\n if (existingDiDep.token != null) {\n transformedUseExisting = existingDiDep.token;\n }\n else {\n transformedUseExisting = null;\n transformedUseValue = existingDiDep.value;\n }\n }\n else if (provider.useFactory) {\n const deps = provider.deps || provider.useFactory.diDeps;\n transformedDeps =\n deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager));\n }\n else if (provider.useClass) {\n const deps = provider.deps || provider.useClass.diDeps;\n transformedDeps =\n deps.map((dep) => this._getDependency(resolvedProvider.providerType, dep, eager));\n }\n return _transformProvider(provider, {\n useExisting: transformedUseExisting,\n useValue: transformedUseValue,\n deps: transformedDeps\n });\n });\n transformedProviderAst =\n _transformProviderAst(resolvedProvider, { eager: eager, providers: transformedProviders });\n this._transformedProviders.set(tokenReference(token), transformedProviderAst);\n return transformedProviderAst;\n }\n _getLocalDependency(requestingProviderType, dep, eager = false) {\n if (dep.isAttribute) {\n const attrValue = this._attrs[dep.token.value];\n return { isValue: true, value: attrValue == null ? null : attrValue };\n }\n if (dep.token != null) {\n // access builtints\n if ((requestingProviderType === ProviderAstType.Directive ||\n requestingProviderType === ProviderAstType.Component)) {\n if (tokenReference(dep.token) ===\n this.viewContext.reflector.resolveExternalReference(Identifiers.Renderer) ||\n tokenReference(dep.token) ===\n this.viewContext.reflector.resolveExternalReference(Identifiers.ElementRef) ||\n tokenReference(dep.token) ===\n this.viewContext.reflector.resolveExternalReference(Identifiers.ChangeDetectorRef) ||\n tokenReference(dep.token) ===\n this.viewContext.reflector.resolveExternalReference(Identifiers.TemplateRef)) {\n return dep;\n }\n if (tokenReference(dep.token) ===\n this.viewContext.reflector.resolveExternalReference(Identifiers.ViewContainerRef)) {\n this.transformedHasViewContainer = true;\n }\n }\n // access the injector\n if (tokenReference(dep.token) ===\n this.viewContext.reflector.resolveExternalReference(Identifiers.Injector)) {\n return dep;\n }\n // access providers\n if (this._getOrCreateLocalProvider(requestingProviderType, dep.token, eager) != null) {\n return dep;\n }\n }\n return null;\n }\n _getDependency(requestingProviderType, dep, eager = false) {\n let currElement = this;\n let currEager = eager;\n let result = null;\n if (!dep.isSkipSelf) {\n result = this._getLocalDependency(requestingProviderType, dep, eager);\n }\n if (dep.isSelf) {\n if (!result && dep.isOptional) {\n result = { isValue: true, value: null };\n }\n }\n else {\n // check parent elements\n while (!result && currElement._parent) {\n const prevElement = currElement;\n currElement = currElement._parent;\n if (prevElement._isViewRoot) {\n currEager = false;\n }\n result = currElement._getLocalDependency(ProviderAstType.PublicService, dep, currEager);\n }\n // check @Host restriction\n if (!result) {\n if (!dep.isHost || this.viewContext.component.isHost ||\n this.viewContext.component.type.reference === tokenReference(dep.token) ||\n this.viewContext.viewProviders.get(tokenReference(dep.token)) != null) {\n result = dep;\n }\n else {\n result = dep.isOptional ? { isValue: true, value: null } : null;\n }\n }\n }\n if (!result) {\n this.viewContext.errors.push(new ProviderError(`No provider for ${tokenName(dep.token)}`, this._sourceSpan));\n }\n return result;\n }\n}\nclass NgModuleProviderAnalyzer {\n constructor(reflector, ngModule, extraProviders, sourceSpan) {\n this.reflector = reflector;\n this._transformedProviders = new Map();\n this._seenProviders = new Map();\n this._errors = [];\n this._allProviders = new Map();\n ngModule.transitiveModule.modules.forEach((ngModuleType) => {\n const ngModuleProvider = { token: { identifier: ngModuleType }, useClass: ngModuleType };\n _resolveProviders([ngModuleProvider], ProviderAstType.PublicService, true, sourceSpan, this._errors, this._allProviders, /* isModule */ true);\n });\n _resolveProviders(ngModule.transitiveModule.providers.map(entry => entry.provider).concat(extraProviders), ProviderAstType.PublicService, false, sourceSpan, this._errors, this._allProviders, \n /* isModule */ false);\n }\n parse() {\n Array.from(this._allProviders.values()).forEach((provider) => {\n this._getOrCreateLocalProvider(provider.token, provider.eager);\n });\n if (this._errors.length > 0) {\n const errorString = this._errors.join('\\n');\n throw new Error(`Provider parse errors:\\n${errorString}`);\n }\n // Note: Maps keep their insertion order.\n const lazyProviders = [];\n const eagerProviders = [];\n this._transformedProviders.forEach(provider => {\n if (provider.eager) {\n eagerProviders.push(provider);\n }\n else {\n lazyProviders.push(provider);\n }\n });\n return lazyProviders.concat(eagerProviders);\n }\n _getOrCreateLocalProvider(token, eager) {\n const resolvedProvider = this._allProviders.get(tokenReference(token));\n if (!resolvedProvider) {\n return null;\n }\n let transformedProviderAst = this._transformedProviders.get(tokenReference(token));\n if (transformedProviderAst) {\n return transformedProviderAst;\n }\n if (this._seenProviders.get(tokenReference(token)) != null) {\n this._errors.push(new ProviderError(`Cannot instantiate cyclic dependency! ${tokenName(token)}`, resolvedProvider.sourceSpan));\n return null;\n }\n this._seenProviders.set(tokenReference(token), true);\n const transformedProviders = resolvedProvider.providers.map((provider) => {\n let transformedUseValue = provider.useValue;\n let transformedUseExisting = provider.useExisting;\n let transformedDeps = undefined;\n if (provider.useExisting != null) {\n const existingDiDep = this._getDependency({ token: provider.useExisting }, eager, resolvedProvider.sourceSpan);\n if (existingDiDep.token != null) {\n transformedUseExisting = existingDiDep.token;\n }\n else {\n transformedUseExisting = null;\n transformedUseValue = existingDiDep.value;\n }\n }\n else if (provider.useFactory) {\n const deps = provider.deps || provider.useFactory.diDeps;\n transformedDeps =\n deps.map((dep) => this._getDependency(dep, eager, resolvedProvider.sourceSpan));\n }\n else if (provider.useClass) {\n const deps = provider.deps || provider.useClass.diDeps;\n transformedDeps =\n deps.map((dep) => this._getDependency(dep, eager, resolvedProvider.sourceSpan));\n }\n return _transformProvider(provider, {\n useExisting: transformedUseExisting,\n useValue: transformedUseValue,\n deps: transformedDeps\n });\n });\n transformedProviderAst =\n _transformProviderAst(resolvedProvider, { eager: eager, providers: transformedProviders });\n this._transformedProviders.set(tokenReference(token), transformedProviderAst);\n return transformedProviderAst;\n }\n _getDependency(dep, eager = false, requestorSourceSpan) {\n let foundLocal = false;\n if (!dep.isSkipSelf && dep.token != null) {\n // access the injector\n if (tokenReference(dep.token) ===\n this.reflector.resolveExternalReference(Identifiers.Injector) ||\n tokenReference(dep.token) ===\n this.reflector.resolveExternalReference(Identifiers.ComponentFactoryResolver)) {\n foundLocal = true;\n // access providers\n }\n else if (this._getOrCreateLocalProvider(dep.token, eager) != null) {\n foundLocal = true;\n }\n }\n return dep;\n }\n}\nfunction _transformProvider(provider, { useExisting, useValue, deps }) {\n return {\n token: provider.token,\n useClass: provider.useClass,\n useExisting: useExisting,\n useFactory: provider.useFactory,\n useValue: useValue,\n deps: deps,\n multi: provider.multi\n };\n}\nfunction _transformProviderAst(provider, { eager, providers }) {\n return new ProviderAst(provider.token, provider.multiProvider, provider.eager || eager, providers, provider.providerType, provider.lifecycleHooks, provider.sourceSpan, provider.isModule);\n}\nfunction _resolveProvidersFromDirectives(directives, sourceSpan, targetErrors) {\n const providersByToken = new Map();\n directives.forEach((directive) => {\n const dirProvider = { token: { identifier: directive.type }, useClass: directive.type };\n _resolveProviders([dirProvider], directive.isComponent ? ProviderAstType.Component : ProviderAstType.Directive, true, sourceSpan, targetErrors, providersByToken, /* isModule */ false);\n });\n // Note: directives need to be able to overwrite providers of a component!\n const directivesWithComponentFirst = directives.filter(dir => dir.isComponent).concat(directives.filter(dir => !dir.isComponent));\n directivesWithComponentFirst.forEach((directive) => {\n _resolveProviders(directive.providers, ProviderAstType.PublicService, false, sourceSpan, targetErrors, providersByToken, /* isModule */ false);\n _resolveProviders(directive.viewProviders, ProviderAstType.PrivateService, false, sourceSpan, targetErrors, providersByToken, /* isModule */ false);\n });\n return providersByToken;\n}\nfunction _resolveProviders(providers, providerType, eager, sourceSpan, targetErrors, targetProvidersByToken, isModule) {\n providers.forEach((provider) => {\n let resolvedProvider = targetProvidersByToken.get(tokenReference(provider.token));\n if (resolvedProvider != null && !!resolvedProvider.multiProvider !== !!provider.multi) {\n targetErrors.push(new ProviderError(`Mixing multi and non multi provider is not possible for token ${tokenName(resolvedProvider.token)}`, sourceSpan));\n }\n if (!resolvedProvider) {\n const lifecycleHooks = provider.token.identifier &&\n provider.token.identifier.lifecycleHooks ?\n provider.token.identifier.lifecycleHooks :\n [];\n const isUseValue = !(provider.useClass || provider.useExisting || provider.useFactory);\n resolvedProvider = new ProviderAst(provider.token, !!provider.multi, eager || isUseValue, [provider], providerType, lifecycleHooks, sourceSpan, isModule);\n targetProvidersByToken.set(tokenReference(provider.token), resolvedProvider);\n }\n else {\n if (!provider.multi) {\n resolvedProvider.providers.length = 0;\n }\n resolvedProvider.providers.push(provider);\n }\n });\n}\nfunction _getViewQueries(component) {\n // Note: queries start with id 1 so we can use the number in a Bloom filter!\n let viewQueryId = 1;\n const viewQueries = new Map();\n if (component.viewQueries) {\n component.viewQueries.forEach((query) => _addQueryToTokenMap(viewQueries, { meta: query, queryId: viewQueryId++ }));\n }\n return viewQueries;\n}\nfunction _getContentQueries(contentQueryStartId, directives) {\n let contentQueryId = contentQueryStartId;\n const contentQueries = new Map();\n directives.forEach((directive, directiveIndex) => {\n if (directive.queries) {\n directive.queries.forEach((query) => _addQueryToTokenMap(contentQueries, { meta: query, queryId: contentQueryId++ }));\n }\n });\n return contentQueries;\n}\nfunction _addQueryToTokenMap(map, query) {\n query.meta.selectors.forEach((token) => {\n let entry = map.get(tokenReference(token));\n if (!entry) {\n entry = [];\n map.set(tokenReference(token), entry);\n }\n entry.push(query);\n });\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass StyleWithImports {\n constructor(style, styleUrls) {\n this.style = style;\n this.styleUrls = styleUrls;\n }\n}\nfunction isStyleUrlResolvable(url) {\n if (url == null || url.length === 0 || url[0] == '/')\n return false;\n const schemeMatch = url.match(URL_WITH_SCHEMA_REGEXP);\n return schemeMatch === null || schemeMatch[1] == 'package' || schemeMatch[1] == 'asset';\n}\n/**\n * Rewrites stylesheets by resolving and removing the @import urls that\n * are either relative or don't have a `package:` scheme\n */\nfunction extractStyleUrls(resolver, baseUrl, cssText) {\n const foundUrls = [];\n const modifiedCssText = cssText.replace(CSS_STRIPPABLE_COMMENT_REGEXP, '')\n .replace(CSS_IMPORT_REGEXP, (...m) => {\n const url = m[1] || m[2];\n if (!isStyleUrlResolvable(url)) {\n // Do not attempt to resolve non-package absolute URLs with URI\n // scheme\n return m[0];\n }\n foundUrls.push(resolver.resolve(baseUrl, url));\n return '';\n });\n return new StyleWithImports(modifiedCssText, foundUrls);\n}\nconst CSS_IMPORT_REGEXP = /@import\\s+(?:url\$)?\\s*(?:(?:['\"]([^'\"]*))|([^;\$\\s]*))[^;]*;?/g;\nconst CSS_STRIPPABLE_COMMENT_REGEXP = /\\/\\*(?!#\\s*(?:sourceURL|sourceMappingURL)=)[\\s\\S]+?\\*\\//g;\nconst URL_WITH_SCHEMA_REGEXP = /^([^:/?#]+):/;\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst PROPERTY_PARTS_SEPARATOR = '.';\nconst ATTRIBUTE_PREFIX = 'attr';\nconst CLASS_PREFIX = 'class';\nconst STYLE_PREFIX = 'style';\nconst TEMPLATE_ATTR_PREFIX = '*';\nconst ANIMATE_PROP_PREFIX = 'animate-';\n/**\n * Parses bindings in templates and in the directive host area.\n */\nclass BindingParser {\n constructor(_exprParser, _interpolationConfig, _schemaRegistry, pipes, errors) {\n this._exprParser = _exprParser;\n this._interpolationConfig = _interpolationConfig;\n this._schemaRegistry = _schemaRegistry;\n this.errors = errors;\n this.pipesByName = null;\n this._usedPipes = new Map();\n // When the `pipes` parameter is `null`, do not check for used pipes\n // This is used in IVY when we might not know the available pipes at compile time\n if (pipes) {\n const pipesByName = new Map();\n pipes.forEach(pipe => pipesByName.set(pipe.name, pipe));\n this.pipesByName = pipesByName;\n }\n }\n get interpolationConfig() {\n return this._interpolationConfig;\n }\n getUsedPipes() {\n return Array.from(this._usedPipes.values());\n }\n createBoundHostProperties(dirMeta, sourceSpan) {\n if (dirMeta.hostProperties) {\n const boundProps = [];\n Object.keys(dirMeta.hostProperties).forEach(propName => {\n const expression = dirMeta.hostProperties[propName];\n if (typeof expression === 'string') {\n this.parsePropertyBinding(propName, expression, true, sourceSpan, sourceSpan.start.offset, undefined, [], boundProps);\n }\n else {\n this._reportError(`Value of the host property binding \"${propName}\" needs to be a string representing an expression but got \"${expression}\" (${typeof expression})`, sourceSpan);\n }\n });\n return boundProps;\n }\n return null;\n }\n createDirectiveHostPropertyAsts(dirMeta, elementSelector, sourceSpan) {\n const boundProps = this.createBoundHostProperties(dirMeta, sourceSpan);\n return boundProps &&\n boundProps.map((prop) => this.createBoundElementProperty(elementSelector, prop));\n }\n createDirectiveHostEventAsts(dirMeta, sourceSpan) {\n if (dirMeta.hostListeners) {\n const targetEvents = [];\n Object.keys(dirMeta.hostListeners).forEach(propName => {\n const expression = dirMeta.hostListeners[propName];\n if (typeof expression === 'string') {\n // TODO: pass a more accurate handlerSpan for this event.\n this.parseEvent(propName, expression, sourceSpan, sourceSpan, [], targetEvents);\n }\n else {\n this._reportError(`Value of the host listener \"${propName}\" needs to be a string representing an expression but got \"${expression}\" (${typeof expression})`, sourceSpan);\n }\n });\n return targetEvents;\n }\n return null;\n }\n parseInterpolation(value, sourceSpan) {\n const sourceInfo = sourceSpan.start.toString();\n try {\n const ast = this._exprParser.parseInterpolation(value, sourceInfo, sourceSpan.start.offset, this._interpolationConfig);\n if (ast)\n this._reportExpressionParserErrors(ast.errors, sourceSpan);\n this._checkPipes(ast, sourceSpan);\n return ast;\n }\n catch (e) {\n this._reportError(`${e}`, sourceSpan);\n return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, sourceSpan.start.offset);\n }\n }\n /**\n * Parses the bindings in a microsyntax expression, and converts them to\n * `ParsedProperty` or `ParsedVariable`.\n *\n * @param tplKey template binding name\n * @param tplValue template binding value\n * @param sourceSpan span of template binding relative to entire the template\n * @param absoluteValueOffset start of the tplValue relative to the entire template\n * @param targetMatchableAttrs potential attributes to match in the template\n * @param targetProps target property bindings in the template\n * @param targetVars target variables in the template\n */\n parseInlineTemplateBinding(tplKey, tplValue, sourceSpan, absoluteValueOffset, targetMatchableAttrs, targetProps, targetVars) {\n const absoluteKeyOffset = sourceSpan.start.offset + TEMPLATE_ATTR_PREFIX.length;\n const bindings = this._parseTemplateBindings(tplKey, tplValue, sourceSpan, absoluteKeyOffset, absoluteValueOffset);\n for (const binding of bindings) {\n // sourceSpan is for the entire HTML attribute. bindingSpan is for a particular\n // binding within the microsyntax expression so it's more narrow than sourceSpan.\n const bindingSpan = moveParseSourceSpan(sourceSpan, binding.sourceSpan);\n const key = binding.key.source;\n const keySpan = moveParseSourceSpan(sourceSpan, binding.key.span);\n if (binding instanceof VariableBinding) {\n const value = binding.value ? binding.value.source : '$implicit';\n const valueSpan = binding.value ? moveParseSourceSpan(sourceSpan, binding.value.span) : undefined;\n targetVars.push(new ParsedVariable(key, value, bindingSpan, keySpan, valueSpan));\n }\n else if (binding.value) {\n const valueSpan = moveParseSourceSpan(sourceSpan, binding.value.ast.sourceSpan);\n this._parsePropertyAst(key, binding.value, sourceSpan, valueSpan, targetMatchableAttrs, targetProps);\n }\n else {\n targetMatchableAttrs.push([key, '']);\n this.parseLiteralAttr(key, null, sourceSpan, absoluteValueOffset, undefined, targetMatchableAttrs, targetProps);\n }\n }\n }\n /**\n * Parses the bindings in a microsyntax expression, e.g.\n * ```\n * \n * ```\n *\n * @param tplKey template binding name\n * @param tplValue template binding value\n * @param sourceSpan span of template binding relative to entire the template\n * @param absoluteKeyOffset start of the `tplKey`\n * @param absoluteValueOffset start of the `tplValue`\n */\n _parseTemplateBindings(tplKey, tplValue, sourceSpan, absoluteKeyOffset, absoluteValueOffset) {\n const sourceInfo = sourceSpan.start.toString();\n try {\n const bindingsResult = this._exprParser.parseTemplateBindings(tplKey, tplValue, sourceInfo, absoluteKeyOffset, absoluteValueOffset);\n this._reportExpressionParserErrors(bindingsResult.errors, sourceSpan);\n bindingsResult.templateBindings.forEach((binding) => {\n if (binding.value instanceof ASTWithSource) {\n this._checkPipes(binding.value, sourceSpan);\n }\n });\n bindingsResult.warnings.forEach((warning) => {\n this._reportError(warning, sourceSpan, ParseErrorLevel.WARNING);\n });\n return bindingsResult.templateBindings;\n }\n catch (e) {\n this._reportError(`${e}`, sourceSpan);\n return [];\n }\n }\n parseLiteralAttr(name, value, sourceSpan, absoluteOffset, valueSpan, targetMatchableAttrs, targetProps) {\n if (isAnimationLabel(name)) {\n name = name.substring(1);\n if (value) {\n this._reportError(`Assigning animation triggers via @prop=\"exp\" attributes with an expression is invalid.` +\n ` Use property bindings (e.g. [@prop]=\"exp\") or use an attribute without a value (e.g. @prop) instead.`, sourceSpan, ParseErrorLevel.ERROR);\n }\n this._parseAnimation(name, value, sourceSpan, absoluteOffset, valueSpan, targetMatchableAttrs, targetProps);\n }\n else {\n targetProps.push(new ParsedProperty(name, this._exprParser.wrapLiteralPrimitive(value, '', absoluteOffset), ParsedPropertyType.LITERAL_ATTR, sourceSpan, valueSpan));\n }\n }\n parsePropertyBinding(name, expression, isHost, sourceSpan, absoluteOffset, valueSpan, targetMatchableAttrs, targetProps) {\n if (name.length === 0) {\n this._reportError(`Property name is missing in binding`, sourceSpan);\n }\n let isAnimationProp = false;\n if (name.startsWith(ANIMATE_PROP_PREFIX)) {\n isAnimationProp = true;\n name = name.substring(ANIMATE_PROP_PREFIX.length);\n }\n else if (isAnimationLabel(name)) {\n isAnimationProp = true;\n name = name.substring(1);\n }\n if (isAnimationProp) {\n this._parseAnimation(name, expression, sourceSpan, absoluteOffset, valueSpan, targetMatchableAttrs, targetProps);\n }\n else {\n this._parsePropertyAst(name, this._parseBinding(expression, isHost, valueSpan || sourceSpan, absoluteOffset), sourceSpan, valueSpan, targetMatchableAttrs, targetProps);\n }\n }\n parsePropertyInterpolation(name, value, sourceSpan, valueSpan, targetMatchableAttrs, targetProps) {\n const expr = this.parseInterpolation(value, valueSpan || sourceSpan);\n if (expr) {\n this._parsePropertyAst(name, expr, sourceSpan, valueSpan, targetMatchableAttrs, targetProps);\n return true;\n }\n return false;\n }\n _parsePropertyAst(name, ast, sourceSpan, valueSpan, targetMatchableAttrs, targetProps) {\n targetMatchableAttrs.push([name, ast.source]);\n targetProps.push(new ParsedProperty(name, ast, ParsedPropertyType.DEFAULT, sourceSpan, valueSpan));\n }\n _parseAnimation(name, expression, sourceSpan, absoluteOffset, valueSpan, targetMatchableAttrs, targetProps) {\n if (name.length === 0) {\n this._reportError('Animation trigger is missing', sourceSpan);\n }\n // This will occur when a @trigger is not paired with an expression.\n // For animations it is valid to not have an expression since */void\n // states will be applied by angular when the element is attached/detached\n const ast = this._parseBinding(expression || 'undefined', false, valueSpan || sourceSpan, absoluteOffset);\n targetMatchableAttrs.push([name, ast.source]);\n targetProps.push(new ParsedProperty(name, ast, ParsedPropertyType.ANIMATION, sourceSpan, valueSpan));\n }\n _parseBinding(value, isHostBinding, sourceSpan, absoluteOffset) {\n const sourceInfo = (sourceSpan && sourceSpan.start || '(unknown)').toString();\n try {\n const ast = isHostBinding ?\n this._exprParser.parseSimpleBinding(value, sourceInfo, absoluteOffset, this._interpolationConfig) :\n this._exprParser.parseBinding(value, sourceInfo, absoluteOffset, this._interpolationConfig);\n if (ast)\n this._reportExpressionParserErrors(ast.errors, sourceSpan);\n this._checkPipes(ast, sourceSpan);\n return ast;\n }\n catch (e) {\n this._reportError(`${e}`, sourceSpan);\n return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, absoluteOffset);\n }\n }\n createBoundElementProperty(elementSelector, boundProp, skipValidation = false, mapPropertyName = true) {\n if (boundProp.isAnimation) {\n return new BoundElementProperty(boundProp.name, 4 /* Animation */, SecurityContext.NONE, boundProp.expression, null, boundProp.sourceSpan, boundProp.valueSpan);\n }\n let unit = null;\n let bindingType = undefined;\n let boundPropertyName = null;\n const parts = boundProp.name.split(PROPERTY_PARTS_SEPARATOR);\n let securityContexts = undefined;\n // Check for special cases (prefix style, attr, class)\n if (parts.length > 1) {\n if (parts[0] == ATTRIBUTE_PREFIX) {\n boundPropertyName = parts.slice(1).join(PROPERTY_PARTS_SEPARATOR);\n if (!skipValidation) {\n this._validatePropertyOrAttributeName(boundPropertyName, boundProp.sourceSpan, true);\n }\n securityContexts = calcPossibleSecurityContexts(this._schemaRegistry, elementSelector, boundPropertyName, true);\n const nsSeparatorIdx = boundPropertyName.indexOf(':');\n if (nsSeparatorIdx > -1) {\n const ns = boundPropertyName.substring(0, nsSeparatorIdx);\n const name = boundPropertyName.substring(nsSeparatorIdx + 1);\n boundPropertyName = mergeNsAndName(ns, name);\n }\n bindingType = 1 /* Attribute */;\n }\n else if (parts[0] == CLASS_PREFIX) {\n boundPropertyName = parts[1];\n bindingType = 2 /* Class */;\n securityContexts = [SecurityContext.NONE];\n }\n else if (parts[0] == STYLE_PREFIX) {\n unit = parts.length > 2 ? parts[2] : null;\n boundPropertyName = parts[1];\n bindingType = 3 /* Style */;\n securityContexts = [SecurityContext.STYLE];\n }\n }\n // If not a special case, use the full property name\n if (boundPropertyName === null) {\n const mappedPropName = this._schemaRegistry.getMappedPropName(boundProp.name);\n boundPropertyName = mapPropertyName ? mappedPropName : boundProp.name;\n securityContexts = calcPossibleSecurityContexts(this._schemaRegistry, elementSelector, mappedPropName, false);\n bindingType = 0 /* Property */;\n if (!skipValidation) {\n this._validatePropertyOrAttributeName(mappedPropName, boundProp.sourceSpan, false);\n }\n }\n return new BoundElementProperty(boundPropertyName, bindingType, securityContexts[0], boundProp.expression, unit, boundProp.sourceSpan, boundProp.valueSpan);\n }\n parseEvent(name, expression, sourceSpan, handlerSpan, targetMatchableAttrs, targetEvents) {\n if (name.length === 0) {\n this._reportError(`Event name is missing in binding`, sourceSpan);\n }\n if (isAnimationLabel(name)) {\n name = name.substr(1);\n this._parseAnimationEvent(name, expression, sourceSpan, handlerSpan, targetEvents);\n }\n else {\n this._parseRegularEvent(name, expression, sourceSpan, handlerSpan, targetMatchableAttrs, targetEvents);\n }\n }\n calcPossibleSecurityContexts(selector, propName, isAttribute) {\n const prop = this._schemaRegistry.getMappedPropName(propName);\n return calcPossibleSecurityContexts(this._schemaRegistry, selector, prop, isAttribute);\n }\n _parseAnimationEvent(name, expression, sourceSpan, handlerSpan, targetEvents) {\n const matches = splitAtPeriod(name, [name, '']);\n const eventName = matches[0];\n const phase = matches[1].toLowerCase();\n if (phase) {\n switch (phase) {\n case 'start':\n case 'done':\n const ast = this._parseAction(expression, handlerSpan);\n targetEvents.push(new ParsedEvent(eventName, phase, 1 /* Animation */, ast, sourceSpan, handlerSpan));\n break;\n default:\n this._reportError(`The provided animation output phase value \"${phase}\" for \"@${eventName}\" is not supported (use start or done)`, sourceSpan);\n break;\n }\n }\n else {\n this._reportError(`The animation trigger output event (@${eventName}) is missing its phase value name (start or done are currently supported)`, sourceSpan);\n }\n }\n _parseRegularEvent(name, expression, sourceSpan, handlerSpan, targetMatchableAttrs, targetEvents) {\n // long format: 'target: eventName'\n const [target, eventName] = splitAtColon(name, [null, name]);\n const ast = this._parseAction(expression, handlerSpan);\n targetMatchableAttrs.push([name, ast.source]);\n targetEvents.push(new ParsedEvent(eventName, target, 0 /* Regular */, ast, sourceSpan, handlerSpan));\n // Don't detect directives for event names for now,\n // so don't add the event name to the matchableAttrs\n }\n _parseAction(value, sourceSpan) {\n const sourceInfo = (sourceSpan && sourceSpan.start || '(unknown').toString();\n const absoluteOffset = (sourceSpan && sourceSpan.start) ? sourceSpan.start.offset : 0;\n try {\n const ast = this._exprParser.parseAction(value, sourceInfo, absoluteOffset, this._interpolationConfig);\n if (ast) {\n this._reportExpressionParserErrors(ast.errors, sourceSpan);\n }\n if (!ast || ast.ast instanceof EmptyExpr) {\n this._reportError(`Empty expressions are not allowed`, sourceSpan);\n return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, absoluteOffset);\n }\n this._checkPipes(ast, sourceSpan);\n return ast;\n }\n catch (e) {\n this._reportError(`${e}`, sourceSpan);\n return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, absoluteOffset);\n }\n }\n _reportError(message, sourceSpan, level = ParseErrorLevel.ERROR) {\n this.errors.push(new ParseError(sourceSpan, message, level));\n }\n _reportExpressionParserErrors(errors, sourceSpan) {\n for (const error of errors) {\n this._reportError(error.message, sourceSpan);\n }\n }\n // Make sure all the used pipes are known in `this.pipesByName`\n _checkPipes(ast, sourceSpan) {\n if (ast && this.pipesByName) {\n const collector = new PipeCollector();\n ast.visit(collector);\n collector.pipes.forEach((ast, pipeName) => {\n const pipeMeta = this.pipesByName.get(pipeName);\n if (!pipeMeta) {\n this._reportError(`The pipe '${pipeName}' could not be found`, new ParseSourceSpan(sourceSpan.start.moveBy(ast.span.start), sourceSpan.start.moveBy(ast.span.end)));\n }\n else {\n this._usedPipes.set(pipeName, pipeMeta);\n }\n });\n }\n }\n /**\n * @param propName the name of the property / attribute\n * @param sourceSpan\n * @param isAttr true when binding to an attribute\n */\n _validatePropertyOrAttributeName(propName, sourceSpan, isAttr) {\n const report = isAttr ? this._schemaRegistry.validateAttribute(propName) :\n this._schemaRegistry.validateProperty(propName);\n if (report.error) {\n this._reportError(report.msg, sourceSpan, ParseErrorLevel.ERROR);\n }\n }\n}\nclass PipeCollector extends RecursiveAstVisitor$1 {\n constructor() {\n super(...arguments);\n this.pipes = new Map();\n }\n visitPipe(ast, context) {\n this.pipes.set(ast.name, ast);\n ast.exp.visit(this);\n this.visitAll(ast.args, context);\n return null;\n }\n}\nfunction isAnimationLabel(name) {\n return name[0] == '@';\n}\nfunction calcPossibleSecurityContexts(registry, selector, propName, isAttribute) {\n const ctxs = [];\n CssSelector.parse(selector).forEach((selector) => {\n const elementNames = selector.element ? [selector.element] : registry.allKnownElementNames();\n const notElementNames = new Set(selector.notSelectors.filter(selector => selector.isElementSelector())\n .map((selector) => selector.element));\n const possibleElementNames = elementNames.filter(elementName => !notElementNames.has(elementName));\n ctxs.push(...possibleElementNames.map(elementName => registry.securityContext(elementName, propName, isAttribute)));\n });\n return ctxs.length === 0 ? [SecurityContext.NONE] : Array.from(new Set(ctxs)).sort();\n}\n/**\n * Compute a new ParseSourceSpan based off an original `sourceSpan` by using\n * absolute offsets from the specified `absoluteSpan`.\n *\n * @param sourceSpan original source span\n * @param absoluteSpan absolute source span to move to\n */\nfunction moveParseSourceSpan(sourceSpan, absoluteSpan) {\n // The difference of two absolute offsets provide the relative offset\n const startDiff = absoluteSpan.start - sourceSpan.start.offset;\n const endDiff = absoluteSpan.end - sourceSpan.end.offset;\n return new ParseSourceSpan(sourceSpan.start.moveBy(startDiff), sourceSpan.end.moveBy(endDiff));\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst NG_CONTENT_SELECT_ATTR = 'select';\nconst LINK_ELEMENT = 'link';\nconst LINK_STYLE_REL_ATTR = 'rel';\nconst LINK_STYLE_HREF_ATTR = 'href';\nconst LINK_STYLE_REL_VALUE = 'stylesheet';\nconst STYLE_ELEMENT = 'style';\nconst SCRIPT_ELEMENT = 'script';\nconst NG_NON_BINDABLE_ATTR = 'ngNonBindable';\nconst NG_PROJECT_AS = 'ngProjectAs';\nfunction preparseElement(ast) {\n let selectAttr = null;\n let hrefAttr = null;\n let relAttr = null;\n let nonBindable = false;\n let projectAs = '';\n ast.attrs.forEach(attr => {\n const lcAttrName = attr.name.toLowerCase();\n if (lcAttrName == NG_CONTENT_SELECT_ATTR) {\n selectAttr = attr.value;\n }\n else if (lcAttrName == LINK_STYLE_HREF_ATTR) {\n hrefAttr = attr.value;\n }\n else if (lcAttrName == LINK_STYLE_REL_ATTR) {\n relAttr = attr.value;\n }\n else if (attr.name == NG_NON_BINDABLE_ATTR) {\n nonBindable = true;\n }\n else if (attr.name == NG_PROJECT_AS) {\n if (attr.value.length > 0) {\n projectAs = attr.value;\n }\n }\n });\n selectAttr = normalizeNgContentSelect(selectAttr);\n const nodeName = ast.name.toLowerCase();\n let type = PreparsedElementType.OTHER;\n if (isNgContent(nodeName)) {\n type = PreparsedElementType.NG_CONTENT;\n }\n else if (nodeName == STYLE_ELEMENT) {\n type = PreparsedElementType.STYLE;\n }\n else if (nodeName == SCRIPT_ELEMENT) {\n type = PreparsedElementType.SCRIPT;\n }\n else if (nodeName == LINK_ELEMENT && relAttr == LINK_STYLE_REL_VALUE) {\n type = PreparsedElementType.STYLESHEET;\n }\n return new PreparsedElement(type, selectAttr, hrefAttr, nonBindable, projectAs);\n}\nvar PreparsedElementType;\n(function (PreparsedElementType) {\n PreparsedElementType[PreparsedElementType[\"NG_CONTENT\"] = 0] = \"NG_CONTENT\";\n PreparsedElementType[PreparsedElementType[\"STYLE\"] = 1] = \"STYLE\";\n PreparsedElementType[PreparsedElementType[\"STYLESHEET\"] = 2] = \"STYLESHEET\";\n PreparsedElementType[PreparsedElementType[\"SCRIPT\"] = 3] = \"SCRIPT\";\n PreparsedElementType[PreparsedElementType[\"OTHER\"] = 4] = \"OTHER\";\n})(PreparsedElementType || (PreparsedElementType = {}));\nclass PreparsedElement {\n constructor(type, selectAttr, hrefAttr, nonBindable, projectAs) {\n this.type = type;\n this.selectAttr = selectAttr;\n this.hrefAttr = hrefAttr;\n this.nonBindable = nonBindable;\n this.projectAs = projectAs;\n }\n}\nfunction normalizeNgContentSelect(selectAttr) {\n if (selectAttr === null || selectAttr.length === 0) {\n return '*';\n }\n return selectAttr;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst BIND_NAME_REGEXP = /^(?:(?:(?:(bind-)|(let-)|(ref-|#)|(on-)|(bindon-)|(@))(.*))|\\[\$([^\$]+)\\)\\]|\\[([^\\]]+)\\]|\$([^\$]+)\\))$/;\n// Group 1 = \"bind-\"\nconst KW_BIND_IDX = 1;\n// Group 2 = \"let-\"\nconst KW_LET_IDX = 2;\n// Group 3 = \"ref-/#\"\nconst KW_REF_IDX = 3;\n// Group 4 = \"on-\"\nconst KW_ON_IDX = 4;\n// Group 5 = \"bindon-\"\nconst KW_BINDON_IDX = 5;\n// Group 6 = \"@\"\nconst KW_AT_IDX = 6;\n// Group 7 = the identifier after \"bind-\", \"let-\", \"ref-/#\", \"on-\", \"bindon-\" or \"@\"\nconst IDENT_KW_IDX = 7;\n// Group 8 = identifier inside [()]\nconst IDENT_BANANA_BOX_IDX = 8;\n// Group 9 = identifier inside []\nconst IDENT_PROPERTY_IDX = 9;\n// Group 10 = identifier inside ()\nconst IDENT_EVENT_IDX = 10;\nconst TEMPLATE_ATTR_PREFIX$1 = '*';\nconst CLASS_ATTR = 'class';\nlet _TEXT_CSS_SELECTOR;\nfunction TEXT_CSS_SELECTOR() {\n if (!_TEXT_CSS_SELECTOR) {\n _TEXT_CSS_SELECTOR = CssSelector.parse('*')[0];\n }\n return _TEXT_CSS_SELECTOR;\n}\nclass TemplateParseError extends ParseError {\n constructor(message, span, level) {\n super(span, message, level);\n }\n}\nclass TemplateParseResult {\n constructor(templateAst, usedPipes, errors) {\n this.templateAst = templateAst;\n this.usedPipes = usedPipes;\n this.errors = errors;\n }\n}\nclass TemplateParser {\n constructor(_config, _reflector, _exprParser, _schemaRegistry, _htmlParser, _console, transforms) {\n this._config = _config;\n this._reflector = _reflector;\n this._exprParser = _exprParser;\n this._schemaRegistry = _schemaRegistry;\n this._htmlParser = _htmlParser;\n this._console = _console;\n this.transforms = transforms;\n }\n get expressionParser() {\n return this._exprParser;\n }\n parse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces) {\n var _a;\n const result = this.tryParse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces);\n const warnings = result.errors.filter(error => error.level === ParseErrorLevel.WARNING);\n const errors = result.errors.filter(error => error.level === ParseErrorLevel.ERROR);\n if (warnings.length > 0) {\n (_a = this._console) === null || _a === void 0 ? void 0 : _a.warn(`Template parse warnings:\\n${warnings.join('\\n')}`);\n }\n if (errors.length > 0) {\n const errorString = errors.join('\\n');\n throw syntaxError(`Template parse errors:\\n${errorString}`, errors);\n }\n return { template: result.templateAst, pipes: result.usedPipes };\n }\n tryParse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces) {\n let htmlParseResult = typeof template === 'string' ?\n this._htmlParser.parse(template, templateUrl, {\n tokenizeExpansionForms: true,\n interpolationConfig: this.getInterpolationConfig(component)\n }) :\n template;\n if (!preserveWhitespaces) {\n htmlParseResult = removeWhitespaces(htmlParseResult);\n }\n return this.tryParseHtml(this.expandHtml(htmlParseResult), component, directives, pipes, schemas);\n }\n tryParseHtml(htmlAstWithErrors, component, directives, pipes, schemas) {\n let result;\n const errors = htmlAstWithErrors.errors;\n const usedPipes = [];\n if (htmlAstWithErrors.rootNodes.length > 0) {\n const uniqDirectives = removeSummaryDuplicates(directives);\n const uniqPipes = removeSummaryDuplicates(pipes);\n const providerViewContext = new ProviderViewContext(this._reflector, component);\n let interpolationConfig = undefined;\n if (component.template && component.template.interpolation) {\n interpolationConfig = {\n start: component.template.interpolation[0],\n end: component.template.interpolation[1]\n };\n }\n const bindingParser = new BindingParser(this._exprParser, interpolationConfig, this._schemaRegistry, uniqPipes, errors);\n const parseVisitor = new TemplateParseVisitor(this._reflector, this._config, providerViewContext, uniqDirectives, bindingParser, this._schemaRegistry, schemas, errors);\n result = visitAll$1(parseVisitor, htmlAstWithErrors.rootNodes, EMPTY_ELEMENT_CONTEXT);\n errors.push(...providerViewContext.errors);\n usedPipes.push(...bindingParser.getUsedPipes());\n }\n else {\n result = [];\n }\n this._assertNoReferenceDuplicationOnTemplate(result, errors);\n if (errors.length > 0) {\n return new TemplateParseResult(result, usedPipes, errors);\n }\n if (this.transforms) {\n this.transforms.forEach((transform) => {\n result = templateVisitAll(transform, result);\n });\n }\n return new TemplateParseResult(result, usedPipes, errors);\n }\n expandHtml(htmlAstWithErrors, forced = false) {\n const errors = htmlAstWithErrors.errors;\n if (errors.length == 0 || forced) {\n // Transform ICU messages to angular directives\n const expandedHtmlAst = expandNodes(htmlAstWithErrors.rootNodes);\n errors.push(...expandedHtmlAst.errors);\n htmlAstWithErrors = new ParseTreeResult(expandedHtmlAst.nodes, errors);\n }\n return htmlAstWithErrors;\n }\n getInterpolationConfig(component) {\n if (component.template) {\n return InterpolationConfig.fromArray(component.template.interpolation);\n }\n return undefined;\n }\n /** @internal */\n _assertNoReferenceDuplicationOnTemplate(result, errors) {\n const existingReferences = [];\n result.filter(element => !!element.references)\n .forEach(element => element.references.forEach((reference) => {\n const name = reference.name;\n if (existingReferences.indexOf(name) < 0) {\n existingReferences.push(name);\n }\n else {\n const error = new TemplateParseError(`Reference \"#${name}\" is defined several times`, reference.sourceSpan, ParseErrorLevel.ERROR);\n errors.push(error);\n }\n }));\n }\n}\nclass TemplateParseVisitor {\n constructor(reflector, config, providerViewContext, directives, _bindingParser, _schemaRegistry, _schemas, _targetErrors) {\n this.reflector = reflector;\n this.config = config;\n this.providerViewContext = providerViewContext;\n this._bindingParser = _bindingParser;\n this._schemaRegistry = _schemaRegistry;\n this._schemas = _schemas;\n this._targetErrors = _targetErrors;\n this.selectorMatcher = new SelectorMatcher();\n this.directivesIndex = new Map();\n this.ngContentCount = 0;\n // Note: queries start with id 1 so we can use the number in a Bloom filter!\n this.contentQueryStartId = providerViewContext.component.viewQueries.length + 1;\n directives.forEach((directive, index) => {\n const selector = CssSelector.parse(directive.selector);\n this.selectorMatcher.addSelectables(selector, directive);\n this.directivesIndex.set(directive, index);\n });\n }\n visitExpansion(expansion, context) {\n return null;\n }\n visitExpansionCase(expansionCase, context) {\n return null;\n }\n visitText(text, parent) {\n const ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR());\n const valueNoNgsp = replaceNgsp(text.value);\n const expr = this._bindingParser.parseInterpolation(valueNoNgsp, text.sourceSpan);\n return expr ? new BoundTextAst(expr, ngContentIndex, text.sourceSpan) :\n new TextAst(valueNoNgsp, ngContentIndex, text.sourceSpan);\n }\n visitAttribute(attribute, context) {\n return new AttrAst(attribute.name, attribute.value, attribute.sourceSpan);\n }\n visitComment(comment, context) {\n return null;\n }\n visitElement(element, parent) {\n const queryStartIndex = this.contentQueryStartId;\n const elName = element.name;\n const preparsedElement = preparseElement(element);\n if (preparsedElement.type === PreparsedElementType.SCRIPT ||\n preparsedElement.type === PreparsedElementType.STYLE) {\n // Skipping

\n {{title}}\n \n