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| 1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 import 'package:analyzer/analyzer.dart' as analyzer; | 5 import 'package:analyzer/analyzer.dart' as analyzer; |
| 6 import 'package:analyzer/dart/ast/ast.dart'; | 6 import 'package:analyzer/dart/ast/ast.dart'; |
| 7 import 'package:analyzer/dart/element/type.dart' show DartType; | 7 import 'package:analyzer/dart/element/type.dart' show DartType; |
| 8 import 'package:analyzer/src/dart/ast/ast.dart' show FunctionBodyImpl; | 8 import 'package:analyzer/src/dart/ast/ast.dart' show FunctionBodyImpl; |
| 9 import 'package:analyzer/src/dart/ast/utilities.dart' show NodeReplacer; | 9 import 'package:analyzer/src/dart/ast/utilities.dart' show NodeReplacer; |
| 10 import 'package:analyzer/src/dart/element/type.dart' show DynamicTypeImpl; | 10 import 'package:analyzer/src/dart/element/type.dart' show DynamicTypeImpl; |
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| 24 | 24 |
| 25 CoercionReifier._(); | 25 CoercionReifier._(); |
| 26 | 26 |
| 27 /// Transforms the given compilation units, and returns a new AST with | 27 /// Transforms the given compilation units, and returns a new AST with |
| 28 /// explicit coercion nodes in appropriate places. | 28 /// explicit coercion nodes in appropriate places. |
| 29 static List<CompilationUnit> reify(List<CompilationUnit> units) { | 29 static List<CompilationUnit> reify(List<CompilationUnit> units) { |
| 30 var cr = new CoercionReifier._(); | 30 var cr = new CoercionReifier._(); |
| 31 return units.map(cr.visitCompilationUnit).toList(growable: false); | 31 return units.map(cr.visitCompilationUnit).toList(growable: false); |
| 32 } | 32 } |
| 33 | 33 |
| 34 | |
| 35 /// Returns true if the `as` [node] was created by this class. | 34 /// Returns true if the `as` [node] was created by this class. |
| 36 // TODO(sra): Find a better way to recognize reified coercion, since we | 35 // TODO(sra): Find a better way to recognize reified coercion, since we |
| 37 // can't set the isSynthetic attribute. | 36 // can't set the isSynthetic attribute. |
| 38 static bool isImplicitCast(AsExpression node) => node.asOperator.offset == 0; | 37 static bool isImplicitCast(AsExpression node) => node.asOperator.offset == 0; |
| 39 | 38 |
| 40 /// Creates an implicit cast for expression [e] to [toType]. | 39 /// Creates an implicit cast for expression [e] to [toType]. |
| 41 static Expression castExpression(Expression e, DartType toType) { | 40 static Expression castExpression(Expression e, DartType toType) { |
| 42 // We use an empty name in the AST, because the JS code generator only cares | 41 // We use an empty name in the AST, because the JS code generator only cares |
| 43 // about the target type. It does not look at the AST name. | 42 // about the target type. It does not look at the AST name. |
| 44 var typeName = new TypeName(AstBuilder.identifierFromString(''), null); | 43 var typeName = new TypeName(AstBuilder.identifierFromString(''), null); |
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| 172 | 171 |
| 173 // TODO(jmesserly): workaround for | 172 // TODO(jmesserly): workaround for |
| 174 // https://github.com/dart-lang/sdk/issues/26368 | 173 // https://github.com/dart-lang/sdk/issues/26368 |
| 175 @override | 174 @override |
| 176 TypeName visitTypeName(TypeName node) { | 175 TypeName visitTypeName(TypeName node) { |
| 177 var clone = super.visitTypeName(node); | 176 var clone = super.visitTypeName(node); |
| 178 clone.type = node.type; | 177 clone.type = node.type; |
| 179 return clone; | 178 return clone; |
| 180 } | 179 } |
| 181 } | 180 } |
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