[PATCH] Add hasUnderlyingType narrowing matcher for TypedefDecls
Richard
legalize at xmission.com
Sun Mar 8 08:29:16 PDT 2015
Hi klimek, doug.gregor,
Adds a new matcher that gives you access to the underlying type of a typedef so that you can disciminate between typedefs in a matcher expression.
http://reviews.llvm.org/D8149
Files:
include/clang/ASTMatchers/ASTMatchers.h
lib/ASTMatchers/Dynamic/Registry.cpp
Index: include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- include/clang/ASTMatchers/ASTMatchers.h
+++ include/clang/ASTMatchers/ASTMatchers.h
@@ -167,6 +167,21 @@
/// matches "typedef int X"
const internal::VariadicDynCastAllOfMatcher<Decl, TypedefDecl> typedefDecl;
+/// \brief Matches the underlying type of a typedef declaration
+///
+/// Given
+/// \code
+/// typedef int X;
+/// typedef float Y;
+/// \endcode
+/// typedefDecl(hasUnderlyingType(asString("int")))
+/// matches "typedef int X"
+AST_MATCHER_P(TypedefDecl, hasUnderlyingType, internal::Matcher<QualType>,
+ InnerMatcher) {
+ QualType UnderlyingType = Node.getUnderlyingType();
+ return InnerMatcher.matches(UnderlyingType, Finder, Builder);
+}
+
/// \brief Matches AST nodes that were expanded within the main-file.
///
/// Example matches X but not Y (matcher = recordDecl(isExpansionInMainFile())
Index: lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- lib/ASTMatchers/Dynamic/Registry.cpp
+++ lib/ASTMatchers/Dynamic/Registry.cpp
@@ -223,6 +223,7 @@
REGISTER_MATCHER(hasTrueExpression);
REGISTER_MATCHER(hasTypeLoc);
REGISTER_MATCHER(hasUnaryOperand);
+ REGISTER_MATCHER(hasUnderlyingType);
REGISTER_MATCHER(hasValueType);
REGISTER_MATCHER(ifStmt);
REGISTER_MATCHER(ignoringImpCasts);
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