[PATCH] D13639: Add decayedType and hasDecayedType AST matchers

[Matthias Gehre via cfe-commits]

mgehre updated this revision to Diff 37066.
mgehre added a comment.

Add test


http://reviews.llvm.org/D13639

Files:
  include/clang/ASTMatchers/ASTMatchers.h
  lib/ASTMatchers/Dynamic/Registry.cpp
  unittests/ASTMatchers/ASTMatchersTest.cpp

Index: unittests/ASTMatchers/ASTMatchersTest.cpp
===================================================================
--- unittests/ASTMatchers/ASTMatchersTest.cpp
+++ unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -4109,6 +4109,11 @@
   EXPECT_TRUE(matches("const int a = 0;", qualType(isInteger())));
 }
 
+TEST(TypeMatching, DecayedType) {
+  EXPECT_TRUE(matches("void f(int i[]);", valueDecl(hasType(decayedType(hasDecayedType(pointerType()))))));
+  EXPECT_TRUE(notMatches("int i[7];", decayedType()));
+}
+
 TEST(TypeMatching, MatchesComplexTypes) {
   EXPECT_TRUE(matches("_Complex float f;", complexType()));
   EXPECT_TRUE(matches(
Index: lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- lib/ASTMatchers/Dynamic/Registry.cpp
+++ lib/ASTMatchers/Dynamic/Registry.cpp
@@ -152,6 +152,7 @@
   REGISTER_MATCHER(cxxThrowExpr);
   REGISTER_MATCHER(cxxTryStmt);
   REGISTER_MATCHER(cxxUnresolvedConstructExpr);
+  REGISTER_MATCHER(decayedType);
   REGISTER_MATCHER(decl);
   REGISTER_MATCHER(declaratorDecl);
   REGISTER_MATCHER(declCountIs);
@@ -199,6 +200,7 @@
   REGISTER_MATCHER(hasCaseConstant);
   REGISTER_MATCHER(hasCondition);
   REGISTER_MATCHER(hasConditionVariableStatement);
+  REGISTER_MATCHER(hasDecayedType);
   REGISTER_MATCHER(hasDeclaration);
   REGISTER_MATCHER(hasDeclContext);
   REGISTER_MATCHER(hasDeducedType);
Index: include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- include/clang/ASTMatchers/ASTMatchers.h
+++ include/clang/ASTMatchers/ASTMatchers.h
@@ -4123,6 +4123,24 @@
 /// \endcode
 AST_TYPE_MATCHER(InjectedClassNameType, injectedClassNameType);
 
+/// \brief Matches decayed type
+/// Example matches i[] in declaration of f.
+///     (matcher = valueDecl(hasType(decayedType(hasDecayedType(pointerType())))))
+/// Example matches i[1].
+///     (matcher = expr(hasType(decayedType(hasDecayedType(pointerType())))))
+/// \code
+///   void f(int i[]) {
+///     i[1] = 0;
+///   }
+/// \endcode
+AST_TYPE_MATCHER(DecayedType, decayedType);
+
+/// \brief Matches the decayed type, whos decayed type matches \c InnerMatcher
+AST_MATCHER_P(DecayedType, hasDecayedType, internal::Matcher<QualType>,
+              InnerType) {
+  return InnerType.matches(Node.getDecayedType(), Finder, Builder);
+}
+
 /// \brief Matches declarations whose declaration context, interpreted as a
 /// Decl, matches \c InnerMatcher.
 ///


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