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//
// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#include "compiler/translator/MapLongVariableNames.h"
namespace {
TString mapLongName(size_t id, const TString& name, bool isGlobal)
{
ASSERT(name.size() > MAX_SHORTENED_IDENTIFIER_SIZE);
TStringStream stream;
stream << "webgl_";
if (isGlobal)
stream << "g";
stream << id;
if (name[0] != '_')
stream << "_";
stream << name.substr(0, MAX_SHORTENED_IDENTIFIER_SIZE - stream.str().size());
return stream.str();
}
LongNameMap* gLongNameMapInstance = NULL;
} // anonymous namespace
LongNameMap::LongNameMap()
: refCount(0)
{
}
LongNameMap::~LongNameMap()
{
}
// static
LongNameMap* LongNameMap::GetInstance()
{
if (gLongNameMapInstance == NULL)
gLongNameMapInstance = new LongNameMap;
gLongNameMapInstance->refCount++;
return gLongNameMapInstance;
}
void LongNameMap::Release()
{
ASSERT(gLongNameMapInstance == this);
ASSERT(refCount > 0);
refCount--;
if (refCount == 0) {
delete gLongNameMapInstance;
gLongNameMapInstance = NULL;
}
}
const char* LongNameMap::Find(const char* originalName) const
{
std::map<std::string, std::string>::const_iterator it = mLongNameMap.find(
originalName);
if (it != mLongNameMap.end())
return (*it).second.c_str();
return NULL;
}
void LongNameMap::Insert(const char* originalName, const char* mappedName)
{
mLongNameMap.insert(std::map<std::string, std::string>::value_type(
originalName, mappedName));
}
size_t LongNameMap::Size() const
{
return mLongNameMap.size();
}
MapLongVariableNames::MapLongVariableNames(LongNameMap* globalMap)
{
ASSERT(globalMap);
mGlobalMap = globalMap;
}
void MapLongVariableNames::visitSymbol(TIntermSymbol* symbol)
{
ASSERT(symbol != NULL);
if (symbol->getSymbol().size() > MAX_SHORTENED_IDENTIFIER_SIZE) {
switch (symbol->getQualifier()) {
case EvqVaryingIn:
case EvqVaryingOut:
case EvqInvariantVaryingIn:
case EvqInvariantVaryingOut:
case EvqUniform:
symbol->setSymbol(
mapGlobalLongName(symbol->getSymbol()));
break;
default:
symbol->setSymbol(
mapLongName(symbol->getId(), symbol->getSymbol(), false));
break;
};
}
}
TString MapLongVariableNames::mapGlobalLongName(const TString& name)
{
ASSERT(mGlobalMap);
const char* mappedName = mGlobalMap->Find(name.c_str());
if (mappedName != NULL)
return mappedName;
size_t id = mGlobalMap->Size();
TString rt = mapLongName(id, name, true);
mGlobalMap->Insert(name.c_str(), rt.c_str());
return rt;
}
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