libretro-dolphin/Externals/glslang/hlsl/hlslScanContext.h
orbea 690dee3533 Externals: Update glslang.
This updates glslang to commit 4fc7a33910fb8e40b970d160e1b38ab3f67fe0f3
which is the current version listed in the known_good.json file for the
version 1.2.131.2 of the Vulkan-ValidationLayers repo.
2020-05-30 18:06:03 -07:00

110 lines
3.5 KiB
C++

//
// Copyright (C) 2016 Google, Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of Google, Inc., nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
//
// This holds context specific to the HLSL scanner, which
// sits between the preprocessor scanner and HLSL parser.
//
#ifndef HLSLSCANCONTEXT_H_
#define HLSLSCANCONTEXT_H_
#include "../glslang/MachineIndependent/ParseHelper.h"
#include "hlslTokens.h"
namespace glslang {
class TPpContext;
class TPpToken;
//
// Everything needed to fully describe a token.
//
struct HlslToken {
HlslToken() : string(nullptr) { loc.init(); }
TSourceLoc loc; // location of token in the source
EHlslTokenClass tokenClass; // what kind of token it is
union { // what data the token holds
glslang::TString *string; // for identifiers
int i; // for literals
unsigned int u;
bool b;
double d;
};
};
//
// The state of scanning and translating raw tokens to slightly richer
// semantics, like knowing if an identifier is an existing symbol, or
// user-defined type.
//
class HlslScanContext {
public:
HlslScanContext(TParseContextBase& parseContext, TPpContext& ppContext)
: parseContext(parseContext), ppContext(ppContext) { }
virtual ~HlslScanContext() { }
static void fillInKeywordMap();
static void deleteKeywordMap();
void tokenize(HlslToken&);
glslang::TBuiltInVariable mapSemantic(const char*);
protected:
HlslScanContext(HlslScanContext&);
HlslScanContext& operator=(HlslScanContext&);
EHlslTokenClass tokenizeClass(HlslToken&);
EHlslTokenClass tokenizeIdentifier();
EHlslTokenClass identifierOrType();
EHlslTokenClass reservedWord();
EHlslTokenClass identifierOrReserved(bool reserved);
EHlslTokenClass nonreservedKeyword(int version);
TParseContextBase& parseContext;
TPpContext& ppContext;
TSourceLoc loc;
TPpToken* ppToken;
HlslToken* parserToken;
const char* tokenText;
EHlslTokenClass keyword;
};
} // end namespace glslang
#endif // HLSLSCANCONTEXT_H_