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Add an AST matcher for narrowing when a type is volatile-qualified. 

llvm-svn: 253882
This commit is contained in:
Aaron Ballman 2015-11-23 17:09:24 +00:00
parent 19c1922c04
commit 6290fc9154
4 changed files with 46 additions and 0 deletions
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17
clang/docs/LibASTMatchersReference.html
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@ -2517,6 +2517,23 @@ matches "a(int)", "b(long)", but not "c(double)".
</pre></td></tr> </pre></td></tr>
<tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>&gt;</td><td class="name" onclick="toggle('isVolatileQualified0')"><a name="isVolatileQualified0Anchor">isVolatileQualified</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isVolatileQualified0"><pre>Matches QualType nodes that are volatile-qualified, i.e., that
include "top-level" volatile.
Given
void a(int);
void b(int volatile);
void c(volatile int);
void d(volatile int*);
void e(int volatile) {};
functionDecl(hasAnyParameter(hasType(isVolatileQualified())))
matches "void b(int volatile)", "void c(volatile int)" and
"void e(int volatile) {}". It does not match d as there
is no top-level volatile on the parameter type "volatile int *".
</pre></td></tr>
<tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1RecordDecl.html">RecordDecl</a>&gt;</td><td class="name" onclick="toggle('isClass0')"><a name="isClass0Anchor">isClass</a></td><td></td></tr> <tr><td>Matcher&lt<a href="http://clang.llvm.org/doxygen/classclang_1_1RecordDecl.html">RecordDecl</a>&gt;</td><td class="name" onclick="toggle('isClass0')"><a name="isClass0Anchor">isClass</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isClass0"><pre>Matches RecordDecl object that are spelled with "class." <tr><td colspan="4" class="doc" id="isClass0"><pre>Matches RecordDecl object that are spelled with "class."

19
clang/include/clang/ASTMatchers/ASTMatchers.h
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@ -3524,6 +3524,25 @@ AST_MATCHER(QualType, isConstQualified) {
return Node.isConstQualified(); return Node.isConstQualified();
} }
/// \brief Matches QualType nodes that are volatile-qualified, i.e., that
/// include "top-level" volatile.
///
/// Given
/// \code
/// void a(int);
/// void b(int volatile);
/// void c(volatile int);
/// void d(volatile int*);
/// void e(int volatile) {};
/// \endcode
/// functionDecl(hasAnyParameter(hasType(isVolatileQualified())))
/// matches "void b(int volatile)", "void c(volatile int)" and
/// "void e(int volatile) {}". It does not match d as there
/// is no top-level volatile on the parameter type "volatile int *".
AST_MATCHER(QualType, isVolatileQualified) {
return Node.isVolatileQualified();
}
/// \brief Matches QualType nodes that have local CV-qualifiers attached to /// \brief Matches QualType nodes that have local CV-qualifiers attached to
/// the node, not hidden within a typedef. /// the node, not hidden within a typedef.
/// ///

1
clang/lib/ASTMatchers/Dynamic/Registry.cpp
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@ -298,6 +298,7 @@ RegistryMaps::RegistryMaps() {
REGISTER_MATCHER(isUnion); REGISTER_MATCHER(isUnion);
REGISTER_MATCHER(isVariadic); REGISTER_MATCHER(isVariadic);
REGISTER_MATCHER(isVirtual); REGISTER_MATCHER(isVirtual);
REGISTER_MATCHER(isVolatileQualified);
REGISTER_MATCHER(isWritten); REGISTER_MATCHER(isWritten);
REGISTER_MATCHER(labelStmt); REGISTER_MATCHER(labelStmt);
REGISTER_MATCHER(lambdaExpr); REGISTER_MATCHER(lambdaExpr);

9
clang/unittests/ASTMatchers/ASTMatchersTest.cpp
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@ -3023,6 +3023,15 @@ TEST(Field, MatchesField) {
EXPECT_TRUE(matches("class X { int m; };", fieldDecl(hasName("m")))); EXPECT_TRUE(matches("class X { int m; };", fieldDecl(hasName("m"))));
} }
TEST(IsVolatileQualified, QualifiersMatch) {
EXPECT_TRUE(matches("volatile int i = 42;",
varDecl(hasType(isVolatileQualified()))));
EXPECT_TRUE(notMatches("volatile int *i;",
varDecl(hasType(isVolatileQualified()))));
EXPECT_TRUE(matches("typedef volatile int v_int; v_int i = 42;",
varDecl(hasType(isVolatileQualified()))));
}
TEST(IsConstQualified, MatchesConstInt) { TEST(IsConstQualified, MatchesConstInt) {
EXPECT_TRUE(matches("const int i = 42;", EXPECT_TRUE(matches("const int i = 42;",
varDecl(hasType(isConstQualified())))); varDecl(hasType(isConstQualified()))));