mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-11-14 21:37:52 -07:00
86 lines
3.1 KiB
C
86 lines
3.1 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.
|
||
|
|
//
|
||
|
|
|
||
|
|
#ifndef HLSLTOKENSTREAM_H_
|
||
|
|
#define HLSLTOKENSTREAM_H_
|
||
|
|
|
||
|
|
#include "hlslScanContext.h"
|
||
|
|
|
||
|
|
namespace glslang {
|
||
|
|
|
||
|
|
class HlslTokenStream {
|
||
|
|
public:
|
||
|
|
explicit HlslTokenStream(HlslScanContext& scanner)
|
||
|
|
: scanner(scanner), preTokenStackSize(0) { }
|
||
|
|
virtual ~HlslTokenStream() { }
|
||
|
|
|
||
|
|
public:
|
||
|
|
void advanceToken();
|
||
|
|
void recedeToken();
|
||
|
|
bool acceptTokenClass(EHlslTokenClass);
|
||
|
|
EHlslTokenClass peek() const;
|
||
|
|
bool peekTokenClass(EHlslTokenClass) const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
HlslToken token; // the token we are currently looking at, but have not yet accepted
|
||
|
|
|
||
|
|
private:
|
||
|
|
HlslTokenStream();
|
||
|
|
HlslTokenStream& operator=(const HlslTokenStream&);
|
||
|
|
|
||
|
|
HlslScanContext& scanner; // lexical scanner, to get next token
|
||
|
|
|
||
|
|
// Previously scanned tokens, returned for future advances,
|
||
|
|
// so logically in front of the token stream.
|
||
|
|
// Is logically a stack; needs last in last out semantics.
|
||
|
|
// Currently implemented as a stack of size 1.
|
||
|
|
HlslToken preTokenStack;
|
||
|
|
int preTokenStackSize;
|
||
|
|
void pushPreToken(const HlslToken&);
|
||
|
|
HlslToken popPreToken();
|
||
|
|
|
||
|
|
// Previously scanned tokens, not yet return for future advances,
|
||
|
|
// but available for that.
|
||
|
|
// Is logically a fifo for normal advances, and a stack for recession.
|
||
|
|
// Currently implemented with an intrinsic size of 1.
|
||
|
|
HlslToken tokenBuffer;
|
||
|
|
void pushTokenBuffer(const HlslToken&);
|
||
|
|
HlslToken popTokenBuffer();
|
||
|
|
};
|
||
|
|
|
||
|
|
} // end namespace glslang
|
||
|
|
|
||
|
|
#endif // HLSLTOKENSTREAM_H_
|