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LibASTMatchersReference.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>AST Matcher Reference</title>
<link type="text/css" rel="stylesheet" href="../menu.css" />
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color: blue;
cursor: pointer;
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</style>
<script type="text/javascript">
function toggle(id) {
if (!id) return;
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<body onLoad="toggle(location.hash.substring(1, location.hash.length - 6))">
<!--#include virtual="../menu.html.incl"-->
<div id="content">
<h1>AST Matcher Reference</h1>
<p>This document shows all currently implemented matchers. The matchers are grouped
by category and node type they match. You can click on matcher names to show the
matcher's source documentation.</p>
<p>There are three different basic categories of matchers:
<ul>
<li><a href="#decl-matchers">Node Matchers:</a> Matchers that match a specific type of AST node.</li>
<li><a href="#narrowing-matchers">Narrowing Matchers:</a> Matchers that match attributes on AST nodes.</li>
<li><a href="#traversal-matchers">Traversal Matchers:</a> Matchers that allow traversal between AST nodes.</li>
</ul>
</p>
<p>Within each category the matchers are ordered by node type they match on.
Note that if a matcher can match multiple node types, it will it will appear
multiple times. This means that by searching for Matcher<Stmt> you can
find all matchers that can be used to match on Stmt nodes.</p>
<p>The exception to that rule are matchers that can match on any node. Those
are marked with a * and are listed in the beginning of each category.</p>
<!-- ======================================================================= -->
<h2 id="decl-matchers">Node Matchers</h2>
<!-- ======================================================================= -->
<p>Node matchers are at the core of matcher expressions - they specify the type
of node that is expected. Every match expression starts with a node matcher,
which can then be further refined with a narrowing or traversal matcher. All
traversal matchers take node matchers as their arguments.</p>
<p>For convenience, all node matchers take an arbitrary number of arguments
and implicitly act as allOf matchers.</p>
<p>Node matchers are the only matchers that support the bind("id") call to
bind the matched node to the given string, to be later retrieved from the
match callback.</p>
<table>
<tr style="text-align:left"><th>Return type</th><th>Name</th><th>Parameters</th></tr>
<!-- START_DECL_MATCHERS -->
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('classTemplateDecl0')"><a name="classTemplateDecl0Anchor">classTemplateDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ClassTemplateDecl.html">ClassTemplateDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="classTemplateDecl0"><pre>Matches C++ class template declarations.
Example matches Z
template<class T> class Z {};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('classTemplateSpecializationDecl0')"><a name="classTemplateSpecializationDecl0Anchor">classTemplateSpecializationDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ClassTemplateSpecializationDecl.html">ClassTemplateSpecializationDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="classTemplateSpecializationDecl0"><pre>Matches C++ class template specializations.
Given
template<typename T> class A {};
template<> class A<double> {};
A<int> a;
classTemplateSpecializationDecl()
matches the specializations A<int> and A<double>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('constructorDecl0')"><a name="constructorDecl0Anchor">constructorDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructorDecl.html">CXXConstructorDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="constructorDecl0"><pre>Matches C++ constructor declarations.
Example matches Foo::Foo() and Foo::Foo(int)
class Foo {
public:
Foo();
Foo(int);
int DoSomething();
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('decl0')"><a name="decl0Anchor">decl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="decl0"><pre>Matches declarations.
Examples matches X, C, and the friend declaration inside C;
void X();
class C {
friend X;
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('destructorDecl0')"><a name="destructorDecl0Anchor">destructorDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDestructorDecl.html">CXXDestructorDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="destructorDecl0"><pre>Matches explicit C++ destructor declarations.
Example matches Foo::~Foo()
class Foo {
public:
virtual ~Foo();
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('enumConstantDecl0')"><a name="enumConstantDecl0Anchor">enumConstantDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1EnumConstantDecl.html">EnumConstantDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="enumConstantDecl0"><pre>Matches enum constants.
Example matches A, B, C
enum X {
A, B, C
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('enumDecl0')"><a name="enumDecl0Anchor">enumDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1EnumDecl.html">EnumDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="enumDecl0"><pre>Matches enum declarations.
Example matches X
enum X {
A, B, C
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('fieldDecl0')"><a name="fieldDecl0Anchor">fieldDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FieldDecl.html">FieldDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="fieldDecl0"><pre>Matches field declarations.
Given
class X { int m; };
fieldDecl()
matches 'm'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('functionDecl0')"><a name="functionDecl0Anchor">functionDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="functionDecl0"><pre>Matches function declarations.
Example matches f
void f();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('functionTemplateDecl0')"><a name="functionTemplateDecl0Anchor">functionTemplateDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionTemplateDecl.html">FunctionTemplateDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="functionTemplateDecl0"><pre>Matches C++ function template declarations.
Example matches f
template<class T> void f(T t) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('methodDecl0')"><a name="methodDecl0Anchor">methodDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMethodDecl.html">CXXMethodDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="methodDecl0"><pre>Matches method declarations.
Example matches y
class X { void y() };
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('namedDecl0')"><a name="namedDecl0Anchor">namedDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="namedDecl0"><pre>Matches a declaration of anything that could have a name.
Example matches X, S, the anonymous union type, i, and U;
typedef int X;
struct S {
union {
int i;
} U;
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('recordDecl0')"><a name="recordDecl0Anchor">recordDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="recordDecl0"><pre>Matches C++ class declarations.
Example matches X, Z
class X;
template<class T> class Z {};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('usingDecl0')"><a name="usingDecl0Anchor">usingDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UsingDecl.html">UsingDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="usingDecl0"><pre>Matches using declarations.
Given
namespace X { int x; }
using X::x;
usingDecl()
matches using X::x </pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('varDecl0')"><a name="varDecl0Anchor">varDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="varDecl0"><pre>Matches variable declarations.
Note: this does not match declarations of member variables, which are
"field" declarations in Clang parlance.
Example matches a
int a;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('arraySubscriptExpr0')"><a name="arraySubscriptExpr0Anchor">arraySubscriptExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ArraySubscriptExpr.html">ArraySubscriptExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="arraySubscriptExpr0"><pre>Matches array subscript expressions.
Given
int i = a[1];
arraySubscriptExpr()
matches "a[1]"
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('asmStmt0')"><a name="asmStmt0Anchor">asmStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1AsmStmt.html">AsmStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="asmStmt0"><pre>Matches asm statements.
int i = 100;
__asm("mov al, 2");
asmStmt()
matches '__asm("mov al, 2")'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('binaryOperator0')"><a name="binaryOperator0Anchor">binaryOperator</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="binaryOperator0"><pre>Matches binary operator expressions.
Example matches a || b
!(a || b)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('bindTemporaryExpr0')"><a name="bindTemporaryExpr0Anchor">bindTemporaryExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXBindTemporaryExpr.html">CXXBindTemporaryExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="bindTemporaryExpr0"><pre>Matches nodes where temporaries are created.
Example matches FunctionTakesString(GetStringByValue())
(matcher = bindTemporaryExpr())
FunctionTakesString(GetStringByValue());
FunctionTakesStringByPointer(GetStringPointer());
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('boolLiteral0')"><a name="boolLiteral0Anchor">boolLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXBoolLiteralExpr.html">CXXBoolLiteralExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="boolLiteral0"><pre>Matches bool literals.
Example matches true
true
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('breakStmt0')"><a name="breakStmt0Anchor">breakStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BreakStmt.html">BreakStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="breakStmt0"><pre>Matches break statements.
Given
while (true) { break; }
breakStmt()
matches 'break'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('cStyleCastExpr0')"><a name="cStyleCastExpr0Anchor">cStyleCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CStyleCastExpr.html">CStyleCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="cStyleCastExpr0"><pre>Matches a C-style cast expression.
Example: Matches (int*) 2.2f in
int i = (int) 2.2f;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('callExpr0')"><a name="callExpr0Anchor">callExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="callExpr0"><pre>Matches call expressions.
Example matches x.y() and y()
X x;
x.y();
y();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('castExpr0')"><a name="castExpr0Anchor">castExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CastExpr.html">CastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="castExpr0"><pre>Matches any cast nodes of Clang's AST.
Example: castExpr() matches each of the following:
(int) 3;
const_cast<Expr *>(SubExpr);
char c = 0;
but does not match
int i = (0);
int k = 0;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('catchStmt0')"><a name="catchStmt0Anchor">catchStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXCatchStmt.html">CXXCatchStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="catchStmt0"><pre>Matches catch statements.
try {} catch(int i) {}
catchStmt()
matches 'catch(int i)'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('characterLiteral0')"><a name="characterLiteral0Anchor">characterLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="characterLiteral0"><pre>Matches character literals (also matches wchar_t).
Not matching Hex-encoded chars (e.g. 0x1234, which is a IntegerLiteral),
though.
Example matches 'a', L'a'
char ch = 'a'; wchar_t chw = L'a';
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('compoundStmt0')"><a name="compoundStmt0Anchor">compoundStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CompoundStmt.html">CompoundStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="compoundStmt0"><pre>Matches compound statements.
Example matches '{}' and '{{}}'in 'for (;;) {{}}'
for (;;) {{}}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('conditionalOperator0')"><a name="conditionalOperator0Anchor">conditionalOperator</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ConditionalOperator.html">ConditionalOperator</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="conditionalOperator0"><pre>Matches conditional operator expressions.
Example matches a ? b : c
(a ? b : c) + 42
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('constCastExpr0')"><a name="constCastExpr0Anchor">constCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstCastExpr.html">CXXConstCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="constCastExpr0"><pre>Matches a const_cast expression.
Example: Matches const_cast<int*>(&r) in
int n = 42;
const int &r(n);
int* p = const_cast<int*>(&r);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('constructExpr0')"><a name="constructExpr0Anchor">constructExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructExpr.html">CXXConstructExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="constructExpr0"><pre>Matches constructor call expressions (including implicit ones).
Example matches string(ptr, n) and ptr within arguments of f
(matcher = constructExpr())
void f(const string &a, const string &b);
char *ptr;
int n;
f(string(ptr, n), ptr);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('continueStmt0')"><a name="continueStmt0Anchor">continueStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ContinueStmt.html">ContinueStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="continueStmt0"><pre>Matches continue statements.
Given
while (true) { continue; }
continueStmt()
matches 'continue'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('declRefExpr0')"><a name="declRefExpr0Anchor">declRefExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclRefExpr.html">DeclRefExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="declRefExpr0"><pre>Matches expressions that refer to declarations.
Example matches x in if (x)
bool x;
if (x) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('declStmt0')"><a name="declStmt0Anchor">declStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclStmt.html">DeclStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="declStmt0"><pre>Matches declaration statements.
Given
int a;
declStmt()
matches 'int a'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('defaultArgExpr0')"><a name="defaultArgExpr0Anchor">defaultArgExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDefaultArgExpr.html">CXXDefaultArgExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="defaultArgExpr0"><pre>Matches the value of a default argument at the call site.
Example matches the CXXDefaultArgExpr placeholder inserted for the
default value of the second parameter in the call expression f(42)
(matcher = defaultArgExpr())
void f(int x, int y = 0);
f(42);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('deleteExpr0')"><a name="deleteExpr0Anchor">deleteExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDeleteExpr.html">CXXDeleteExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="deleteExpr0"><pre>Matches delete expressions.
Given
delete X;
deleteExpr()
matches 'delete X'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('doStmt0')"><a name="doStmt0Anchor">doStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DoStmt.html">DoStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="doStmt0"><pre>Matches do statements.
Given
do {} while (true);
doStmt()
matches 'do {} while(true)'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('dynamicCastExpr0')"><a name="dynamicCastExpr0Anchor">dynamicCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDynamicCastExpr.html">CXXDynamicCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="dynamicCastExpr0"><pre>Matches a dynamic_cast expression.
Example:
dynamicCastExpr()
matches
dynamic_cast<D*>(&b);
in
struct B { virtual ~B() {} }; struct D : B {};
B b;
D* p = dynamic_cast<D*>(&b);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('explicitCastExpr0')"><a name="explicitCastExpr0Anchor">explicitCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ExplicitCastExpr.html">ExplicitCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="explicitCastExpr0"><pre>Matches explicit cast expressions.
Matches any cast expression written in user code, whether it be a
C-style cast, a functional-style cast, or a keyword cast.
Does not match implicit conversions.
Note: the name "explicitCast" is chosen to match Clang's terminology, as
Clang uses the term "cast" to apply to implicit conversions as well as to
actual cast expressions.
hasDestinationType.
Example: matches all five of the casts in
int((int)(reinterpret_cast<int>(static_cast<int>(const_cast<int>(42)))))
but does not match the implicit conversion in
long ell = 42;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('expr0')"><a name="expr0Anchor">expr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="expr0"><pre>Matches expressions.
Example matches x()
void f() { x(); }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('forRangeStmt0')"><a name="forRangeStmt0Anchor">forRangeStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXForRangeStmt.html">CXXForRangeStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="forRangeStmt0"><pre>Matches range-based for statements.
forRangeStmt() matches 'for (auto a : i)'
int i[] = {1, 2, 3}; for (auto a : i);
for(int j = 0; j < 5; ++j);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('forStmt0')"><a name="forStmt0Anchor">forStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ForStmt.html">ForStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="forStmt0"><pre>Matches for statements.
Example matches 'for (;;) {}'
for (;;) {}
int i[] = {1, 2, 3}; for (auto a : i);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('functionalCastExpr0')"><a name="functionalCastExpr0Anchor">functionalCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXFunctionalCastExpr.html">CXXFunctionalCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="functionalCastExpr0"><pre>Matches functional cast expressions
Example: Matches Foo(bar);
Foo f = bar;
Foo g = (Foo) bar;
Foo h = Foo(bar);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('gotoStmt0')"><a name="gotoStmt0Anchor">gotoStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1GotoStmt.html">GotoStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="gotoStmt0"><pre>Matches goto statements.
Given
goto FOO;
FOO: bar();
gotoStmt()
matches 'goto FOO'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('ifStmt0')"><a name="ifStmt0Anchor">ifStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IfStmt.html">IfStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="ifStmt0"><pre>Matches if statements.
Example matches 'if (x) {}'
if (x) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('implicitCastExpr0')"><a name="implicitCastExpr0Anchor">implicitCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ImplicitCastExpr.html">ImplicitCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="implicitCastExpr0"><pre>Matches the implicit cast nodes of Clang's AST.
This matches many different places, including function call return value
eliding, as well as any type conversions.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('initListExpr0')"><a name="initListExpr0Anchor">initListExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1InitListExpr.html">InitListExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="initListExpr0"><pre>Matches init list expressions.
Given
int a[] = { 1, 2 };
struct B { int x, y; };
B b = { 5, 6 };
initList()
matches "{ 1, 2 }" and "{ 5, 6 }"
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('integerLiteral0')"><a name="integerLiteral0Anchor">integerLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="integerLiteral0"><pre>Matches integer literals of all sizes encodings.
Not matching character-encoded integers such as L'a'.
Example matches 1, 1L, 0x1, 1U
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('labelStmt0')"><a name="labelStmt0Anchor">labelStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1LabelStmt.html">LabelStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="labelStmt0"><pre>Matches label statements.
Given
goto FOO;
FOO: bar();
labelStmt()
matches 'FOO:'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('lambdaExpr0')"><a name="lambdaExpr0Anchor">lambdaExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1LambdaExpr.html">LambdaExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="lambdaExpr0"><pre>Matches lambda expressions.
Example matches [&](){return 5;}
[&](){return 5;}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('materializeTemporaryExpr0')"><a name="materializeTemporaryExpr0Anchor">materializeTemporaryExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MaterializeTemporaryExpr.html">MaterializeTemporaryExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="materializeTemporaryExpr0"><pre>Matches nodes where temporaries are materialized.
Example: Given
struct T {void func()};
T f();
void g(T);
materializeTemporaryExpr() matches 'f()' in these statements
T u(f());
g(f());
but does not match
f();
f().func();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('memberCallExpr0')"><a name="memberCallExpr0Anchor">memberCallExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMemberCallExpr.html">CXXMemberCallExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="memberCallExpr0"><pre>Matches member call expressions.
Example matches x.y()
X x;
x.y();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('memberExpr0')"><a name="memberExpr0Anchor">memberExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MemberExpr.html">MemberExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="memberExpr0"><pre>Matches member expressions.
Given
class Y {
void x() { this->x(); x(); Y y; y.x(); a; this->b; Y::b; }
int a; static int b;
};
memberExpr()
matches this->x, x, y.x, a, this->b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('newExpr0')"><a name="newExpr0Anchor">newExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXNewExpr.html">CXXNewExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="newExpr0"><pre>Matches new expressions.
Given
new X;
newExpr()
matches 'new X'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('nullPtrLiteralExpr0')"><a name="nullPtrLiteralExpr0Anchor">nullPtrLiteralExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXNullPtrLiteralExpr.html">CXXNullPtrLiteralExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="nullPtrLiteralExpr0"><pre>Matches nullptr literal.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('nullStmt0')"><a name="nullStmt0Anchor">nullStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NullStmt.html">NullStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="nullStmt0"><pre>Matches null statements.
foo();;
nullStmt()
matches the second ';'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('operatorCallExpr0')"><a name="operatorCallExpr0Anchor">operatorCallExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXOperatorCallExpr.html">CXXOperatorCallExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="operatorCallExpr0"><pre>Matches overloaded operator calls.
Note that if an operator isn't overloaded, it won't match. Instead, use
binaryOperator matcher.
Currently it does not match operators such as new delete.
FIXME: figure out why these do not match?
Example matches both operator<<((o << b), c) and operator<<(o, b)
(matcher = operatorCallExpr())
ostream &operator<< (ostream &out, int i) { };
ostream &o; int b = 1, c = 1;
o << b << c;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('reinterpretCastExpr0')"><a name="reinterpretCastExpr0Anchor">reinterpretCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXReinterpretCastExpr.html">CXXReinterpretCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="reinterpretCastExpr0"><pre>Matches a reinterpret_cast expression.
Either the source expression or the destination type can be matched
using has(), but hasDestinationType() is more specific and can be
more readable.
Example matches reinterpret_cast<char*>(&p) in
void* p = reinterpret_cast<char*>(&p);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('returnStmt0')"><a name="returnStmt0Anchor">returnStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ReturnStmt.html">ReturnStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="returnStmt0"><pre>Matches return statements.
Given
return 1;
returnStmt()
matches 'return 1'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('staticCastExpr0')"><a name="staticCastExpr0Anchor">staticCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXStaticCastExpr.html">CXXStaticCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="staticCastExpr0"><pre>Matches a C++ static_cast expression.
hasDestinationType
reinterpretCast
Example:
staticCastExpr()
matches
static_cast<long>(8)
in
long eight(static_cast<long>(8));
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('stmt0')"><a name="stmt0Anchor">stmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="stmt0"><pre>Matches statements.
Given
{ ++a; }
stmt()
matches both the compound statement '{ ++a; }' and '++a'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('stringLiteral0')"><a name="stringLiteral0Anchor">stringLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1StringLiteral.html">StringLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="stringLiteral0"><pre>Matches string literals (also matches wide string literals).
Example matches "abcd", L"abcd"
char *s = "abcd"; wchar_t *ws = L"abcd"
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('switchCase0')"><a name="switchCase0Anchor">switchCase</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1SwitchCase.html">SwitchCase</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="switchCase0"><pre>Matches case and default statements inside switch statements.
Given
switch(a) { case 42: break; default: break; }
switchCase()
matches 'case 42: break;' and 'default: break;'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('switchStmt0')"><a name="switchStmt0Anchor">switchStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1SwitchStmt.html">SwitchStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="switchStmt0"><pre>Matches switch statements.
Given
switch(a) { case 42: break; default: break; }
switchStmt()
matches 'switch(a)'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('thisExpr0')"><a name="thisExpr0Anchor">thisExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXThisExpr.html">CXXThisExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="thisExpr0"><pre>Matches implicit and explicit this expressions.
Example matches the implicit this expression in "return i".
(matcher = thisExpr())
struct foo {
int i;
int f() { return i; }
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('throwExpr0')"><a name="throwExpr0Anchor">throwExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXThrowExpr.html">CXXThrowExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="throwExpr0"><pre>Matches throw expressions.
try { throw 5; } catch(int i) {}
throwExpr()
matches 'throw 5'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('tryStmt0')"><a name="tryStmt0Anchor">tryStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXTryStmt.html">CXXTryStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="tryStmt0"><pre>Matches try statements.
try {} catch(int i) {}
tryStmt()
matches 'try {}'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('unaryExprOrTypeTraitExpr0')"><a name="unaryExprOrTypeTraitExpr0Anchor">unaryExprOrTypeTraitExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html">UnaryExprOrTypeTraitExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="unaryExprOrTypeTraitExpr0"><pre>Matches sizeof (C99), alignof (C++11) and vec_step (OpenCL)
Given
Foo x = bar;
int y = sizeof(x) + alignof(x);
unaryExprOrTypeTraitExpr()
matches sizeof(x) and alignof(x)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('unaryOperator0')"><a name="unaryOperator0Anchor">unaryOperator</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryOperator.html">UnaryOperator</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="unaryOperator0"><pre>Matches unary operator expressions.
Example matches !a
!a || b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('userDefinedLiteral0')"><a name="userDefinedLiteral0Anchor">userDefinedLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UserDefinedLiteral.html">UserDefinedLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="userDefinedLiteral0"><pre>Matches user defined literal operator call.
Example match: "foo"_suffix
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('whileStmt0')"><a name="whileStmt0Anchor">whileStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1WhileStmt.html">WhileStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="whileStmt0"><pre>Matches while statements.
Given
while (true) {}
whileStmt()
matches 'while (true) {}'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TypeLoc.html">TypeLoc</a>></td><td class="name" onclick="toggle('typeLoc0')"><a name="typeLoc0Anchor">typeLoc</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TypeLoc.html">TypeLoc</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="typeLoc0"><pre>Matches TypeLocs in the clang AST.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Type.html">Type</a>></td><td class="name" onclick="toggle('type0')"><a name="type0Anchor">type</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Type.html">Type</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="type0"><pre>Matches Types in the clang AST.
</pre></td></tr>
<!--END_DECL_MATCHERS -->
</table>
<!-- ======================================================================= -->
<h2 id="narrowing-matchers">Narrowing Matchers</h2>
<!-- ======================================================================= -->
<p>Narrowing matchers match certain attributes on the current node, thus
narrowing down the set of nodes of the current type to match on.</p>
<p>There are special logical narrowing matchers (allOf, anyOf, anything and unless)
which allow users to create more powerful match expressions.</p>
<table>
<tr style="text-align:left"><th>Return type</th><th>Name</th><th>Parameters</th></tr>
<!-- START_NARROWING_MATCHERS -->
<tr><td>Matcher<*></td><td class="name" onclick="toggle('allOf0')"><a name="allOf0Anchor">allOf</a></td><td>Matcher<*> P1, Matcher<*> P2</td></tr>
<tr><td colspan="4" class="doc" id="allOf0"><pre>Matches if all given matchers match.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('anyOf0')"><a name="anyOf0Anchor">anyOf</a></td><td>Matcher<*> P1, Matcher<*> P2</td></tr>
<tr><td colspan="4" class="doc" id="anyOf0"><pre>Matches if any of the given matchers matches.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('anything0')"><a name="anything0Anchor">anything</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="anything0"><pre>Matches any node.
Useful when another matcher requires a child matcher, but there's no
additional constraint. This will often be used with an explicit conversion
to an internal::Matcher<> type such as TypeMatcher.
Example: DeclarationMatcher(anything()) matches all declarations, e.g.,
"int* p" and "void f()" in
int* p;
void f();
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('unless0')"><a name="unless0Anchor">unless</a></td><td>Matcher<*> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="unless0"><pre>Matches if the provided matcher does not match.
Example matches Y (matcher = recordDecl(unless(hasName("X"))))
class X {};
class Y {};
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>></td><td class="name" onclick="toggle('hasOperatorName0')"><a name="hasOperatorName0Anchor">hasOperatorName</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="hasOperatorName0"><pre>Matches the operator Name of operator expressions (binary or
unary).
Example matches a || b (matcher = binaryOperator(hasOperatorName("||")))
!(a || b)
</pre></td></tr>
<tr><td>Matcher<CXXBoolLiteral></td><td class="name" onclick="toggle('equals2')"><a name="equals2Anchor">equals</a></td><td>ValueT Value</td></tr>
<tr><td colspan="4" class="doc" id="equals2"><pre>Matches literals that are equal to the given value.
Example matches true (matcher = boolLiteral(equals(true)))
true
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>, Matcher<CXXBoolLiteral>,
Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructorDecl.html">CXXConstructorDecl</a>></td><td class="name" onclick="toggle('isImplicit0')"><a name="isImplicit0Anchor">isImplicit</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isImplicit0"><pre>Matches a constructor declaration that has been implicitly added
by the compiler (eg. implicit defaultcopy constructors).
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXCtorInitializer.html">CXXCtorInitializer</a>></td><td class="name" onclick="toggle('isWritten0')"><a name="isWritten0Anchor">isWritten</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isWritten0"><pre>Matches a contructor initializer if it is explicitly written in
code (as opposed to implicitly added by the compiler).
Given
struct Foo {
Foo() { }
Foo(int) : foo_("A") { }
string foo_;
};
constructorDecl(hasAnyConstructorInitializer(isWritten()))
will match Foo(int), but not Foo()
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXOperatorCallExpr.html">CXXOperatorCallExpr</a>></td><td class="name" onclick="toggle('hasOverloadedOperatorName0')"><a name="hasOverloadedOperatorName0Anchor">hasOverloadedOperatorName</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="hasOverloadedOperatorName0"><pre>Matches overloaded operator names.
Matches overloaded operator names specified in strings without the
"operator" prefix, such as "<<", for OverloadedOperatorCall's.
Example matches a << b
(matcher == operatorCallExpr(hasOverloadedOperatorName("<<")))
a << b;
c && d; assuming both operator<<
and operator&& are overloaded somewhere.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isDerivedFrom1')"><a name="isDerivedFrom1Anchor">isDerivedFrom</a></td><td>StringRef BaseName</td></tr>
<tr><td colspan="4" class="doc" id="isDerivedFrom1"><pre>Overloaded method as shortcut for isDerivedFrom(hasName(...)).
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isExplicitTemplateSpecialization0')"><a name="isExplicitTemplateSpecialization0Anchor">isExplicitTemplateSpecialization</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isExplicitTemplateSpecialization0"><pre>Matches explicit template specializations of function, class, or
static member variable template instantiations.
Given
template<typename T> void A(T t) { }
template<> void A(int N) { }
functionDecl(isExplicitTemplateSpecialization())
matches the specialization A<int>().
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isSameOrDerivedFrom1')"><a name="isSameOrDerivedFrom1Anchor">isSameOrDerivedFrom</a></td><td>StringRef BaseName</td></tr>
<tr><td colspan="4" class="doc" id="isSameOrDerivedFrom1"><pre>Overloaded method as shortcut for
isSameOrDerivedFrom(hasName(...)).
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isTemplateInstantiation0')"><a name="isTemplateInstantiation0Anchor">isTemplateInstantiation</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isTemplateInstantiation0"><pre>Matches template instantiations of function, class, or static
member variable template instantiations.
Given
template <typename T> class X {}; class A {}; X<A> x;
or
template <typename T> class X {}; class A {}; template class X<A>;
recordDecl(hasName("::X"), isTemplateInstantiation())
matches the template instantiation of X<A>.
But given
template <typename T> class X {}; class A {};
template <> class X<A> {}; X<A> x;
recordDecl(hasName("::X"), isTemplateInstantiation())
does not match, as X<A> is an explicit template specialization.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>></td><td class="name" onclick="toggle('argumentCountIs0')"><a name="argumentCountIs0Anchor">argumentCountIs</a></td><td>unsigned N</td></tr>
<tr><td colspan="4" class="doc" id="argumentCountIs0"><pre>Checks that a call expression or a constructor call expression has
a specific number of arguments (including absent default arguments).
Example matches f(0, 0) (matcher = callExpr(argumentCountIs(2)))
void f(int x, int y);
f(0, 0);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>></td><td class="name" onclick="toggle('equals3')"><a name="equals3Anchor">equals</a></td><td>ValueT Value</td></tr>
<tr><td colspan="4" class="doc" id="equals3"><pre>Matches literals that are equal to the given value.
Example matches true (matcher = boolLiteral(equals(true)))
true
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>, Matcher<CXXBoolLiteral>,
Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CompoundStmt.html">CompoundStmt</a>></td><td class="name" onclick="toggle('statementCountIs0')"><a name="statementCountIs0Anchor">statementCountIs</a></td><td>unsigned N</td></tr>
<tr><td colspan="4" class="doc" id="statementCountIs0"><pre>Checks that a compound statement contains a specific number of
child statements.
Example: Given
{ for (;;) {} }
compoundStmt(statementCountIs(0)))
matches '{}'
but does not match the outer compound statement.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ConstantArrayType.html">ConstantArrayType</a>></td><td class="name" onclick="toggle('hasSize0')"><a name="hasSize0Anchor">hasSize</a></td><td>unsigned N</td></tr>
<tr><td colspan="4" class="doc" id="hasSize0"><pre>Matches ConstantArrayType nodes that have the specified size.
Given
int a[42];
int b[2 * 21];