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Unified Diff: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java

Issue 22935003: Report CTEC.CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 7 years, 4 months ago
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Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
index 1285352083756bf5abbff2c7808bff45128dce0d..9235d4854892ce7fc6ec6590d756aade97df7019 100644
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
@@ -504,6 +504,7 @@ public class ErrorVerifier extends RecursiveASTVisitor<Void> {
enclosingFunction = node.getElement();
isEnclosingConstructorConst = node.getConstKeyword() != null;
checkForConstConstructorWithNonFinalField(node);
+ checkForConstConstructorWithNonConstSuper(node);
checkForConflictingConstructorNameAndMember(node);
checkForAllFinalInitializedErrorCodes(node);
checkForRedirectingConstructorErrorCodes(node);
@@ -2280,7 +2281,57 @@ public class ErrorVerifier extends RecursiveASTVisitor<Void> {
}
/**
- * This verifies that the passed constructor declaration is 'const' then there are no non-final
+ * This verifies that if the passed constructor declaration is 'const' then there are no
+ * invocations of non-'const' super constructors.
+ *
+ * @param node the constructor declaration to evaluate
+ * @return {@code true} if and only if an error code is generated on the passed node
+ * @see CompileTimeErrorCode#CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER
+ */
+ private boolean checkForConstConstructorWithNonConstSuper(ConstructorDeclaration node) {
+ if (!isEnclosingConstructorConst) {
+ return false;
+ }
+ // OK, const factory, checked elsewhere
+ if (node.getFactoryKeyword() != null) {
+ return false;
+ }
+ // try to find and check super constructor invocation
+ for (ConstructorInitializer initializer : node.getInitializers()) {
+ if (initializer instanceof SuperConstructorInvocation) {
+ SuperConstructorInvocation superInvocation = (SuperConstructorInvocation) initializer;
+ ConstructorElement element = superInvocation.getElement();
+ if (element.isConst()) {
+ return false;
+ }
+ errorReporter.reportError(
+ CompileTimeErrorCode.CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER,
+ superInvocation);
+ return true;
+ }
+ }
+ // no explicit super constructor invocation, check default constructor
+ InterfaceType supertype = enclosingClass.getSupertype();
+ if (supertype == null) {
+ return false;
+ }
+ if (supertype.isObject()) {
+ return false;
+ }
+ ConstructorElement unnamedConstructor = supertype.getElement().getUnnamedConstructor();
+ if (unnamedConstructor == null) {
+ return false;
+ }
+ if (unnamedConstructor.isConst()) {
+ return false;
+ }
+ // default constructor is not 'const', report problem
+ errorReporter.reportError(CompileTimeErrorCode.CONST_CONSTRUCTOR_WITH_NON_CONST_SUPER, node);
+ return true;
+ }
+
+ /**
+ * This verifies that if the passed constructor declaration is 'const' then there are no non-final
* instance variable.
*
* @param node the constructor declaration to evaluate

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