110 lines
3.5 KiB
C++
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_
|