Symbols.cpp 33.2 KB
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// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include "Symbols.h"
#include "Names.h"
#include "TypeVisitor.h"
#include "SymbolVisitor.h"
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#include "TypeMatcher.h"
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#include "Scope.h"
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#include "Templates.h"
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using namespace CPlusPlus;
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UsingNamespaceDirective::UsingNamespaceDirective(TranslationUnit *translationUnit,
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                                                 unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name)
{ }

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UsingNamespaceDirective::UsingNamespaceDirective(Clone *clone, Subst *subst, UsingNamespaceDirective *original)
    : Symbol(clone, subst, original)
{ }

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UsingNamespaceDirective::~UsingNamespaceDirective()
{ }

FullySpecifiedType UsingNamespaceDirective::type() const
{ return FullySpecifiedType(); }

void UsingNamespaceDirective::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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NamespaceAlias::NamespaceAlias(TranslationUnit *translationUnit,
                               unsigned sourceLocation, const Name *name)
    : Symbol(translationUnit, sourceLocation, name), _namespaceName(0)
{ }

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NamespaceAlias::NamespaceAlias(Clone *clone, Subst *subst, NamespaceAlias *original)
    : Symbol(clone, subst, original)
    , _namespaceName(clone->name(original->_namespaceName, subst))
{ }

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NamespaceAlias::~NamespaceAlias()
{ }

const Name *NamespaceAlias::namespaceName() const
{ return _namespaceName; }

void NamespaceAlias::setNamespaceName(const Name *namespaceName)
{ _namespaceName = namespaceName; }

FullySpecifiedType NamespaceAlias::type() const
{ return FullySpecifiedType(); }

void NamespaceAlias::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }


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UsingDeclaration::UsingDeclaration(TranslationUnit *translationUnit,
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                                   unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name)
{ }

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UsingDeclaration::UsingDeclaration(Clone *clone, Subst *subst, UsingDeclaration *original)
    : Symbol(clone, subst, original)
{ }

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UsingDeclaration::~UsingDeclaration()
{ }

FullySpecifiedType UsingDeclaration::type() const
{ return FullySpecifiedType(); }

void UsingDeclaration::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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Declaration::Declaration(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name)
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    , _initializer(0)
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{ }

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Declaration::Declaration(Clone *clone, Subst *subst, Declaration *original)
    : Symbol(clone, subst, original)
    , _type(clone->type(original->_type, subst))
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    , _initializer(clone->stringLiteral(original->_initializer))
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{ }

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Declaration::~Declaration()
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{ }
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void Declaration::setType(const FullySpecifiedType &type)
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{ _type = type; }

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void Declaration::setInitializer(const StringLiteral *initializer)
{
    _initializer = initializer;
}

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FullySpecifiedType Declaration::type() const
{ return _type; }

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const StringLiteral *Declaration::getInitializer() const
{
    return _initializer;
}

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void Declaration::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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EnumeratorDeclaration::EnumeratorDeclaration(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
    : Declaration(translationUnit, sourceLocation, name)
    , _constantValue(0)
{}

EnumeratorDeclaration::~EnumeratorDeclaration()
{}

const StringLiteral *EnumeratorDeclaration::constantValue() const
{ return _constantValue; }

void EnumeratorDeclaration::setConstantValue(const StringLiteral *constantValue)
{ _constantValue = constantValue; }

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Argument::Argument(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name),
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      _initializer(0)
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{ }

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Argument::Argument(Clone *clone, Subst *subst, Argument *original)
    : Symbol(clone, subst, original)
    , _initializer(clone->stringLiteral(original->_initializer))
    , _type(clone->type(original->_type, subst))
{ }

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Argument::~Argument()
{ }

bool Argument::hasInitializer() const
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{ return _initializer != 0; }

const StringLiteral *Argument::initializer() const
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{ return _initializer; }

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void Argument::setInitializer(const StringLiteral *initializer)
{ _initializer = initializer; }
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void Argument::setType(const FullySpecifiedType &type)
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{ _type = type; }

FullySpecifiedType Argument::type() const
{ return _type; }

void Argument::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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TypenameArgument::TypenameArgument(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
    : Symbol(translationUnit, sourceLocation, name)
{ }

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TypenameArgument::TypenameArgument(Clone *clone, Subst *subst, TypenameArgument *original)
    : Symbol(clone, subst, original)
    , _type(clone->type(original->_type, subst))
{ }

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TypenameArgument::~TypenameArgument()
{ }

void TypenameArgument::setType(const FullySpecifiedType &type)
{ _type = type; }

FullySpecifiedType TypenameArgument::type() const
{ return _type; }

void TypenameArgument::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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Function::Function(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Scope(translationUnit, sourceLocation, name),
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      _flags(0)
{ }
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Function::Function(Clone *clone, Subst *subst, Function *original)
    : Scope(clone, subst, original)
    , _returnType(clone->type(original->_returnType, subst))
    , _flags(original->_flags)
{ }

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Function::~Function()
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{ }
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bool Function::isNormal() const
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{ return f._methodKey == NormalMethod; }
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bool Function::isSignal() const
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{ return f._methodKey == SignalMethod; }
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bool Function::isSlot() const
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{ return f._methodKey == SlotMethod; }
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bool Function::isInvokable() const
{ return f._methodKey == InvokableMethod; }

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int Function::methodKey() const
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{ return f._methodKey; }
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void Function::setMethodKey(int key)
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{ f._methodKey = key; }
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bool Function::isEqualTo(const Type *other) const
{
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    const Function *o = other->asFunctionType();
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    if (! o)
        return false;
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    else if (isConst() != o->isConst())
        return false;
    else if (isVolatile() != o->isVolatile())
        return false;

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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r || (l && l->isEqualTo(r))) {
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        if (argumentCount() != o->argumentCount())
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            return false;
        else if (! _returnType.isEqualTo(o->_returnType))
            return false;
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        for (unsigned i = 0; i < argumentCount(); ++i) {
            Symbol *l = argumentAt(i);
            Symbol *r = o->argumentAt(i);
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            if (! l->type().isEqualTo(r->type()))
                return false;
        }
        return true;
    }
    return false;
}

void Function::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool Function::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const Function *otherTy = otherType->asFunctionType())
        return matcher->match(this, otherTy);

    return false;
}

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FullySpecifiedType Function::type() const
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{
    FullySpecifiedType ty(const_cast<Function *>(this));
    ty.setConst(isConst());
    ty.setVolatile(isVolatile());
    return ty;
}
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FullySpecifiedType Function::returnType() const
{ return _returnType; }

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void Function::setReturnType(const FullySpecifiedType &returnType)
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{ _returnType = returnType; }

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bool Function::hasReturnType() const
{
    const FullySpecifiedType ty = returnType();
    return ty.isValid() || ty.isSigned() || ty.isUnsigned();
}

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unsigned Function::argumentCount() const
{
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    unsigned c = memberCount();
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    if (c > 0 && memberAt(0)->type()->isVoidType())
        return 0;
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    // Definitions with function-try-blocks will have more than a block.
    while (c > 0 && memberAt(c - 1)->isBlock())
        --c;
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    return c;
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}

Symbol *Function::argumentAt(unsigned index) const
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{ return memberAt(index); }
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bool Function::hasArguments() const
{
    return ! (argumentCount() == 0 ||
              (argumentCount() == 1 && argumentAt(0)->type()->isVoidType()));
}

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unsigned Function::minimumArgumentCount() const
{
    unsigned index = 0;

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    for (; index < argumentCount(); ++index) {
        if (Argument *arg = argumentAt(index)->asArgument()) {
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            if (arg->hasInitializer())
                break;
        }
    }

    return index;
}

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bool Function::isVirtual() const
{ return f._isVirtual; }

void Function::setVirtual(bool isVirtual)
{ f._isVirtual = isVirtual; }

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bool Function::isOverride() const
{ return f._isOverride; }

void Function::setOverride(bool isOverride)
{ f._isOverride = isOverride; }

bool Function::isFinal() const
{ return f._isFinal; }

void Function::setFinal(bool isFinal)
{ f._isFinal = isFinal; }

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bool Function::isVariadic() const
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{ return f._isVariadic; }
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void Function::setVariadic(bool isVariadic)
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{ f._isVariadic = isVariadic; }
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bool Function::isConst() const
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{ return f._isConst; }
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void Function::setConst(bool isConst)
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{ f._isConst = isConst; }
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bool Function::isVolatile() const
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{ return f._isVolatile; }
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void Function::setVolatile(bool isVolatile)
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{ f._isVolatile = isVolatile; }
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bool Function::isPureVirtual() const
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{ return f._isPureVirtual; }
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void Function::setPureVirtual(bool isPureVirtual)
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{ f._isPureVirtual = isPureVirtual; }
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bool Function::isAmbiguous() const
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{ return f._isAmbiguous; }
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void Function::setAmbiguous(bool isAmbiguous)
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{ f._isAmbiguous = isAmbiguous; }
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void Function::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}

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bool Function::maybeValidPrototype(unsigned actualArgumentCount) const
{
    unsigned minNumberArguments = 0;

    for (; minNumberArguments < this->argumentCount(); ++minNumberArguments) {
        Argument *arg = this->argumentAt(minNumberArguments)->asArgument();

        if (arg->hasInitializer())
            break;
    }

    if (actualArgumentCount < minNumberArguments) {
        // not enough arguments.
        return false;

    } else if (! this->isVariadic() && actualArgumentCount > this->argumentCount()) {
        // too many arguments.
        return false;
    }

    return true;
}


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Block::Block(TranslationUnit *translationUnit, unsigned sourceLocation)
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    : Scope(translationUnit, sourceLocation, /*name = */ 0)
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{ }

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Block::Block(Clone *clone, Subst *subst, Block *original)
    : Scope(clone, subst, original)
{ }

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Block::~Block()
{ }

FullySpecifiedType Block::type() const
{ return FullySpecifiedType(); }

void Block::visitSymbol0(SymbolVisitor *visitor)
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{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}
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Enum::Enum(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Scope(translationUnit, sourceLocation, name)
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    , _isScoped(false)
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{ }

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Enum::Enum(Clone *clone, Subst *subst, Enum *original)
    : Scope(clone, subst, original)
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    , _isScoped(original->isScoped())
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{ }

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Enum::~Enum()
{ }

FullySpecifiedType Enum::type() const
{ return FullySpecifiedType(const_cast<Enum *>(this)); }

bool Enum::isEqualTo(const Type *other) const
{
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    const Enum *o = other->asEnumType();
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    if (! o)
        return false;
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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r)
        return true;
    else if (! l)
        return false;
    return l->isEqualTo(r);
}

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bool Enum::isScoped() const
{
    return _isScoped;
}

void Enum::setScoped(bool scoped)
{
    _isScoped = scoped;
}

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void Enum::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool Enum::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const Enum *otherTy = otherType->asEnumType())
        return matcher->match(this, otherTy);

    return false;
}

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void Enum::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}

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Template::Template(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
    : Scope(translationUnit, sourceLocation, name)
{ }

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Template::Template(Clone *clone, Subst *subst, Template *original)
    : Scope(clone, subst, original)
{ }

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Template::~Template()
{ }

unsigned Template::templateParameterCount() const
{
    if (declaration() != 0)
        return memberCount() - 1;

    return 0;
}

Symbol *Template::templateParameterAt(unsigned index) const
{ return memberAt(index); }

Symbol *Template::declaration() const
{
    if (isEmpty())
        return 0;

    if (Symbol *s = memberAt(memberCount() - 1)) {
        if (s->isClass() || s->isForwardClassDeclaration() ||
            s->isTemplate() || s->isFunction() || s->isDeclaration())
            return s;
    }

    return 0;
}

FullySpecifiedType Template::type() const
{ return FullySpecifiedType(const_cast<Template *>(this)); }

bool Template::isEqualTo(const Type *other) const
{ return other == this; }

void Template::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}

void Template::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

bool Template::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const Template *otherTy = otherType->asTemplateType())
        return matcher->match(this, otherTy);
    return false;
}

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Namespace::Namespace(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Scope(translationUnit, sourceLocation, name)
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    , _isInline(false)
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{ }

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Namespace::Namespace(Clone *clone, Subst *subst, Namespace *original)
    : Scope(clone, subst, original)
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    , _isInline(original->_isInline)
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{ }

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Namespace::~Namespace()
{ }

bool Namespace::isEqualTo(const Type *other) const
{
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    const Namespace *o = other->asNamespaceType();
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    if (! o)
        return false;
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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r || (l && l->isEqualTo(r)))
        return true;
    return false;
}

void Namespace::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool Namespace::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const Namespace *otherTy = otherType->asNamespaceType())
        return matcher->match(this, otherTy);

    return false;
}

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void Namespace::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}

FullySpecifiedType Namespace::type() const
{ return FullySpecifiedType(const_cast<Namespace *>(this)); }

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BaseClass::BaseClass(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name),
      _isVirtual(false)
{ }

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BaseClass::BaseClass(Clone *clone, Subst *subst, BaseClass *original)
    : Symbol(clone, subst, original)
    , _isVirtual(original->_isVirtual)
    , _type(clone->type(original->_type, subst))
{ }

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BaseClass::~BaseClass()
{ }

FullySpecifiedType BaseClass::type() const
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{ return _type; }

void BaseClass::setType(const FullySpecifiedType &type)
{ _type = type; }
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bool BaseClass::isVirtual() const
{ return _isVirtual; }

void BaseClass::setVirtual(bool isVirtual)
{ _isVirtual = isVirtual; }

void BaseClass::visitSymbol0(SymbolVisitor *visitor)
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{ visitor->visit(this); }

ForwardClassDeclaration::ForwardClassDeclaration(TranslationUnit *translationUnit,
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                                                 unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name)
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{ }

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ForwardClassDeclaration::ForwardClassDeclaration(Clone *clone, Subst *subst, ForwardClassDeclaration *original)
    : Symbol(clone, subst, original)
{ }

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ForwardClassDeclaration::~ForwardClassDeclaration()
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{ }
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FullySpecifiedType ForwardClassDeclaration::type() const
{ return FullySpecifiedType(const_cast<ForwardClassDeclaration *>(this)); }

bool ForwardClassDeclaration::isEqualTo(const Type *other) const
{
    if (const ForwardClassDeclaration *otherClassFwdTy = other->asForwardClassDeclarationType()) {
        if (name() == otherClassFwdTy->name())
            return true;
        else if (name() && otherClassFwdTy->name())
            return name()->isEqualTo(otherClassFwdTy->name());

        return false;
    }
    return false;
}

void ForwardClassDeclaration::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

void ForwardClassDeclaration::accept0(TypeVisitor *visitor)
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{ visitor->visit(this); }

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bool ForwardClassDeclaration::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const ForwardClassDeclaration *otherTy = otherType->asForwardClassDeclarationType())
        return matcher->match(this, otherTy);

    return false;
}

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Class::Class(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Scope(translationUnit, sourceLocation, name),
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      _key(ClassKey)
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{ }

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Class::Class(Clone *clone, Subst *subst, Class *original)
    : Scope(clone, subst, original)
    , _key(original->_key)
{
    for (size_t i = 0; i < original->_baseClasses.size(); ++i)
        addBaseClass(clone->symbol(original->_baseClasses.at(i), subst)->asBaseClass());
}

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Class::~Class()
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{ }
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bool Class::isClass() const
{ return _key == ClassKey; }

bool Class::isStruct() const
{ return _key == StructKey; }

bool Class::isUnion() const
{ return _key == UnionKey; }

Class::Key Class::classKey() const
{ return _key; }

void Class::setClassKey(Key key)
{ _key = key; }

void Class::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool Class::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const Class *otherTy = otherType->asClassType())
        return matcher->match(this, otherTy);

    return false;
}

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unsigned Class::baseClassCount() const
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{ return _baseClasses.size(); }
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BaseClass *Class::baseClassAt(unsigned index) const
{ return _baseClasses.at(index); }

void Class::addBaseClass(BaseClass *baseClass)
{ _baseClasses.push_back(baseClass); }

FullySpecifiedType Class::type() const
{ return FullySpecifiedType(const_cast<Class *>(this)); }

bool Class::isEqualTo(const Type *other) const
{
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    const Class *o = other->asClassType();
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    if (! o)
        return false;
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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r || (l && l->isEqualTo(r)))
        return true;
    else
        return false;
}

void Class::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < _baseClasses.size(); ++i) {
            visitSymbol(_baseClasses.at(i), visitor);
        }
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}

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QtPropertyDeclaration::QtPropertyDeclaration(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
    : Symbol(translationUnit, sourceLocation, name)
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    , _flags(NoFlags)
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{ }

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QtPropertyDeclaration::QtPropertyDeclaration(Clone *clone, Subst *subst, QtPropertyDeclaration *original)
    : Symbol(clone, subst, original)
    , _type(clone->type(original->_type, subst))
    , _flags(original->_flags)
{ }

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QtPropertyDeclaration::~QtPropertyDeclaration()
{ }

void QtPropertyDeclaration::setType(const FullySpecifiedType &type)
{ _type = type; }

void QtPropertyDeclaration::setFlags(int flags)
{ _flags = flags; }

int QtPropertyDeclaration::flags() const
{ return _flags; }

FullySpecifiedType QtPropertyDeclaration::type() const
{ return _type; }

void QtPropertyDeclaration::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }


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QtEnum::QtEnum(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
    : Symbol(translationUnit, sourceLocation, name)
{ }

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QtEnum::QtEnum(Clone *clone, Subst *subst, QtEnum *original)
    : Symbol(clone, subst, original)
{ }

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QtEnum::~QtEnum()
{ }

FullySpecifiedType QtEnum::type() const
{ return FullySpecifiedType(); }

void QtEnum::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }


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ObjCBaseClass::ObjCBaseClass(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name)
{ }

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ObjCBaseClass::ObjCBaseClass(Clone *clone, Subst *subst, ObjCBaseClass *original)
    : Symbol(clone, subst, original)
{ }

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ObjCBaseClass::~ObjCBaseClass()
{ }

FullySpecifiedType ObjCBaseClass::type() const
{ return FullySpecifiedType(); }

void ObjCBaseClass::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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ObjCBaseProtocol::ObjCBaseProtocol(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Symbol(translationUnit, sourceLocation, name)
{ }

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ObjCBaseProtocol::ObjCBaseProtocol(Clone *clone, Subst *subst, ObjCBaseProtocol *original)
    : Symbol(clone, subst, original)
{ }

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ObjCBaseProtocol::~ObjCBaseProtocol()
{ }

FullySpecifiedType ObjCBaseProtocol::type() const
{ return FullySpecifiedType(); }

void ObjCBaseProtocol::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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ObjCClass::ObjCClass(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name):
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    Scope(translationUnit, sourceLocation, name),
    _categoryName(0),
    _baseClass(0),
    _isInterface(false)
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{ }

ObjCClass::ObjCClass(Clone *clone, Subst *subst, ObjCClass *original)
    : Scope(clone, subst, original)
    , _categoryName(clone->name(original->_categoryName, subst))
    , _baseClass(0)
    , _isInterface(original->_isInterface)
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{
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    if (original->_baseClass)
        _baseClass = clone->symbol(original->_baseClass, subst)->asObjCBaseClass();
    for (size_t i = 0; i < original->_protocols.size(); ++i)
        addProtocol(clone->symbol(original->_protocols.at(i), subst)->asObjCBaseProtocol());
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}

ObjCClass::~ObjCClass()
{}

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bool ObjCClass::isInterface() const
{ return _isInterface; }

void ObjCClass::setInterface(bool isInterface)
{ _isInterface = isInterface; }

bool ObjCClass::isCategory() const
{ return _categoryName != 0; }

const Name *ObjCClass::categoryName() const
{ return _categoryName; }

void ObjCClass::setCategoryName(const Name *categoryName)
{ _categoryName = categoryName; }

ObjCBaseClass *ObjCClass::baseClass() const
{ return _baseClass; }

void ObjCClass::setBaseClass(ObjCBaseClass *baseClass)
{ _baseClass = baseClass; }

unsigned ObjCClass::protocolCount() const
{ return _protocols.size(); }

ObjCBaseProtocol *ObjCClass::protocolAt(unsigned index) const
{ return _protocols.at(index); }

void ObjCClass::addProtocol(ObjCBaseProtocol *protocol)
{ _protocols.push_back(protocol); }

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FullySpecifiedType ObjCClass::type() const
{ return FullySpecifiedType(const_cast<ObjCClass *>(this)); }

bool ObjCClass::isEqualTo(const Type *other) const
{
    const ObjCClass *o = other->asObjCClassType();
    if (!o)
        return false;

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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r || (l && l->isEqualTo(r)))
        return true;
    else
        return false;
}

void ObjCClass::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
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        if (_baseClass)
            visitSymbol(_baseClass, visitor);

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        for (unsigned i = 0; i < _protocols.size(); ++i)
            visitSymbol(_protocols.at(i), visitor);
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        for (unsigned i = 0; i < memberCount(); ++i)
            visitSymbol(memberAt(i), visitor);
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    }
}

void ObjCClass::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool ObjCClass::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const ObjCClass *otherTy = otherType->asObjCClassType())
        return matcher->match(this, otherTy);

    return false;
}

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ObjCProtocol::ObjCProtocol(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name):
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        Scope(translationUnit, sourceLocation, name)
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{
}

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ObjCProtocol::ObjCProtocol(Clone *clone, Subst *subst, ObjCProtocol *original)
    : Scope(clone, subst, original)
{
    for (size_t i = 0; i < original->_protocols.size(); ++i)
        addProtocol(clone->symbol(original->_protocols.at(i), subst)->asObjCBaseProtocol());
}

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ObjCProtocol::~ObjCProtocol()
{}

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unsigned ObjCProtocol::protocolCount() const
{ return _protocols.size(); }

ObjCBaseProtocol *ObjCProtocol::protocolAt(unsigned index) const
{ return _protocols.at(index); }

void ObjCProtocol::addProtocol(ObjCBaseProtocol *protocol)
{ _protocols.push_back(protocol); }

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FullySpecifiedType ObjCProtocol::type() const
{ return FullySpecifiedType(const_cast<ObjCProtocol *>(this)); }

bool ObjCProtocol::isEqualTo(const Type *other) const
{
    const ObjCProtocol *o = other->asObjCProtocolType();
    if (!o)
        return false;

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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r || (l && l->isEqualTo(r)))
        return true;
    else
        return false;
}

void ObjCProtocol::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < _protocols.size(); ++i)
            visitSymbol(_protocols.at(i), visitor);
    }
}

void ObjCProtocol::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool ObjCProtocol::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const ObjCProtocol *otherTy = otherType->asObjCProtocolType())
        return matcher->match(this, otherTy);

    return false;
}

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ObjCForwardClassDeclaration::ObjCForwardClassDeclaration(TranslationUnit *translationUnit, unsigned sourceLocation,
                                                         const Name *name):
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        Symbol(translationUnit, sourceLocation, name)
{
}

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ObjCForwardClassDeclaration::ObjCForwardClassDeclaration(Clone *clone, Subst *subst, ObjCForwardClassDeclaration *original)
    : Symbol(clone, subst, original)
{ }

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ObjCForwardClassDeclaration::~ObjCForwardClassDeclaration()
{}

FullySpecifiedType ObjCForwardClassDeclaration::type() const
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{ return FullySpecifiedType(); }
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bool ObjCForwardClassDeclaration::isEqualTo(const Type *other) const
{
    if (const ObjCForwardClassDeclaration *otherFwdClass = other->asObjCForwardClassDeclarationType()) {
        if (name() == otherFwdClass->name())
            return true;
        else if (name() && otherFwdClass->name())
            return name()->isEqualTo(otherFwdClass->name());
        else
            return false;
    }

    return false;
}

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void ObjCForwardClassDeclaration::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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void ObjCForwardClassDeclaration::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool ObjCForwardClassDeclaration::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const ObjCForwardClassDeclaration *otherTy = otherType->asObjCForwardClassDeclarationType())
        return matcher->match(this, otherTy);

    return false;
}

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ObjCForwardProtocolDeclaration::ObjCForwardProtocolDeclaration(TranslationUnit *translationUnit, unsigned sourceLocation,
                                                               const Name *name):
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        Symbol(translationUnit, sourceLocation, name)
{
}

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ObjCForwardProtocolDeclaration::ObjCForwardProtocolDeclaration(Clone *clone, Subst *subst, ObjCForwardProtocolDeclaration *original)
    : Symbol(clone, subst, original)
{ }

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ObjCForwardProtocolDeclaration::~ObjCForwardProtocolDeclaration()
{}

FullySpecifiedType ObjCForwardProtocolDeclaration::type() const
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{ return FullySpecifiedType(); }
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bool ObjCForwardProtocolDeclaration::isEqualTo(const Type *other) const
{
    if (const ObjCForwardProtocolDeclaration *otherFwdProtocol = other->asObjCForwardProtocolDeclarationType()) {
        if (name() == otherFwdProtocol->name())
            return true;
        else if (name() && otherFwdProtocol->name())
            return name()->isEqualTo(otherFwdProtocol->name());
        else
            return false;
    }

    return false;
}

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void ObjCForwardProtocolDeclaration::visitSymbol0(SymbolVisitor *visitor)
{ visitor->visit(this); }

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void ObjCForwardProtocolDeclaration::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool ObjCForwardProtocolDeclaration::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const ObjCForwardProtocolDeclaration *otherTy = otherType->asObjCForwardProtocolDeclarationType())
        return matcher->match(this, otherTy);

    return false;
}

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ObjCMethod::ObjCMethod(TranslationUnit *translationUnit, unsigned sourceLocation, const Name *name)
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    : Scope(translationUnit, sourceLocation, name),
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     _flags(0)
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{ }
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ObjCMethod::ObjCMethod(Clone *clone, Subst *subst, ObjCMethod *original)
    : Scope(clone, subst, original)
    , _returnType(clone->type(original->_returnType, subst))
    , _flags(original->_flags)
{ }

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ObjCMethod::~ObjCMethod()
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{ }
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bool ObjCMethod::isEqualTo(const Type *other) const
{
    const ObjCMethod *o = other->asObjCMethodType();
    if (! o)
        return false;

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    const Name *l = unqualifiedName();
    const Name *r = o->unqualifiedName();
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    if (l == r || (l && l->isEqualTo(r))) {
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        if (argumentCount() != o->argumentCount())
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            return false;
        else if (! _returnType.isEqualTo(o->_returnType))
            return false;
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        for (unsigned i = 0; i < argumentCount(); ++i) {
            Symbol *l = argumentAt(i);
            Symbol *r = o->argumentAt(i);
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            if (! l->type().isEqualTo(r->type()))
                return false;
        }
        return true;
    }
    return false;
}

void ObjCMethod::accept0(TypeVisitor *visitor)
{ visitor->visit(this); }

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bool ObjCMethod::matchType0(const Type *otherType, TypeMatcher *matcher) const
{
    if (const ObjCMethod *otherTy = otherType->asObjCMethodType())
        return matcher->match(this, otherTy);

    return false;
}

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FullySpecifiedType ObjCMethod::type() const
{ return FullySpecifiedType(const_cast<ObjCMethod *>(this)); }

FullySpecifiedType ObjCMethod::returnType() const
{ return _returnType; }

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void ObjCMethod::setReturnType(const FullySpecifiedType &returnType)
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{ _returnType = returnType; }

bool ObjCMethod::hasReturnType() const
{
    const FullySpecifiedType ty = returnType();
    return ty.isValid() || ty.isSigned() || ty.isUnsigned();
}

unsigned ObjCMethod::argumentCount() const
{
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    const unsigned c = memberCount();
    if (c > 0 && memberAt(c - 1)->isBlock())
        return c - 1;
    return c;
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}

Symbol *ObjCMethod::argumentAt(unsigned index) const
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{
    return memberAt(index);
}
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bool ObjCMethod::hasArguments() const
{
    return ! (argumentCount() == 0 ||
              (argumentCount() == 1 && argumentAt(0)->type()->isVoidType()));
}

bool ObjCMethod::isVariadic() const
{ return f._isVariadic; }

void ObjCMethod::setVariadic(bool isVariadic)
{ f._isVariadic = isVariadic; }

void ObjCMethod::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
        for (unsigned i = 0; i < memberCount(); ++i) {
            visitSymbol(memberAt(i), visitor);
        }
    }
}

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ObjCPropertyDeclaration::ObjCPropertyDeclaration(TranslationUnit *translationUnit,
                                                 unsigned sourceLocation,
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                                                 const Name *name):
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    Symbol(translationUnit, sourceLocation, name),
    _getterName(0),
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    _setterName(0),
    _propertyAttributes(None)
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{}

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ObjCPropertyDeclaration::ObjCPropertyDeclaration(Clone *clone, Subst *subst, ObjCPropertyDeclaration *original)
    : Symbol(clone, subst, original)
    , _getterName(clone->name(original->_getterName, subst))
    , _setterName(clone->name(original->_setterName, subst))
    , _type(clone->type(original->_type, subst))
    , _propertyAttributes(original->_propertyAttributes)
{ }

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ObjCPropertyDeclaration::~ObjCPropertyDeclaration()
{}

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bool ObjCPropertyDeclaration::hasAttribute(int attribute) const
{ return _propertyAttributes & attribute; }

void ObjCPropertyDeclaration::setAttributes(int attributes)
{ _propertyAttributes = attributes; }

bool ObjCPropertyDeclaration::hasGetter() const
{ return hasAttribute(Getter); }

bool ObjCPropertyDeclaration::hasSetter() const
{ return hasAttribute(Setter); }

const Name *ObjCPropertyDeclaration::getterName() const
{ return _getterName; }

void ObjCPropertyDeclaration::setGetterName(const Name *getterName)
{ _getterName = getterName; }

const Name *ObjCPropertyDeclaration::setterName() const
{ return _setterName; }

void ObjCPropertyDeclaration::setSetterName(const Name *setterName)
{ _setterName = setterName; }

void ObjCPropertyDeclaration::setType(const FullySpecifiedType &type)
{ _type = type; }

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FullySpecifiedType ObjCPropertyDeclaration::type() const
{ return _type; }
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void ObjCPropertyDeclaration::visitSymbol0(SymbolVisitor *visitor)
{
    if (visitor->visit(this)) {
    }
}