Hash :
044a5cf8
Author :
Date :
2010-11-12T15:42:16
Refactored glslang grammar files to make: - lexer and parser reentrant - line number handling automatic Caveats: - The preprocessor is still not thread-safe and full of bugs. I have another not-yet-ready patch to replace the preprocessor. - The grammar files use options that are not supported by the old versions of flex and bison checked into compiler/tools. So I need to check-in the generated lexer-parser along with a shell script to generate them. Review URL: http://codereview.appspot.com/2992041 git-svn-id: https://angleproject.googlecode.com/svn/trunk@475 736b8ea6-26fd-11df-bfd4-992fa37f6226
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89
//
// Copyright (c) 2002-2010 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.
//
#ifndef _COMMON_INCLUDED_
#define _COMMON_INCLUDED_
#include <map>
#include <sstream>
#include <string>
#include <vector>
#include "compiler/PoolAlloc.h"
// We need two pieces of information to report errors/warnings - string and
// line number. We encode these into a single int so that it can be easily
// incremented/decremented by lexer. The right SOURCE_LOC_LINE_SIZE bits store
// line number while the rest store the string number. Since the shaders are
// usually small, we should not run out of memory. SOURCE_LOC_LINE_SIZE
// can be increased to alleviate this issue.
typedef int TSourceLoc;
const unsigned int SOURCE_LOC_LINE_SIZE = 16; // in bits.
const unsigned int SOURCE_LOC_LINE_MASK = (1 << SOURCE_LOC_LINE_SIZE) - 1;
inline TSourceLoc EncodeSourceLoc(int string, int line) {
return (string << SOURCE_LOC_LINE_SIZE) | (line & SOURCE_LOC_LINE_MASK);
}
inline void DecodeSourceLoc(TSourceLoc loc, int* string, int* line) {
if (string) *string = loc >> SOURCE_LOC_LINE_SIZE;
if (line) *line = loc & SOURCE_LOC_LINE_MASK;
}
//
// Put POOL_ALLOCATOR_NEW_DELETE in base classes to make them use this scheme.
//
#define POOL_ALLOCATOR_NEW_DELETE(A) \
void* operator new(size_t s) { return (A).allocate(s); } \
void* operator new(size_t, void *_Where) { return (_Where); } \
void operator delete(void*) { } \
void operator delete(void *, void *) { } \
void* operator new[](size_t s) { return (A).allocate(s); } \
void* operator new[](size_t, void *_Where) { return (_Where); } \
void operator delete[](void*) { } \
void operator delete[](void *, void *) { }
//
// Pool version of string.
//
typedef pool_allocator<char> TStringAllocator;
typedef std::basic_string <char, std::char_traits<char>, TStringAllocator> TString;
typedef std::basic_ostringstream<char, std::char_traits<char>, TStringAllocator> TStringStream;
inline TString* NewPoolTString(const char* s)
{
void* memory = GlobalPoolAllocator.allocate(sizeof(TString));
return new(memory) TString(s);
}
//
// Persistent string memory. Should only be used for strings that survive
// across compiles.
//
#define TPersistString std::string
#define TPersistStringStream std::ostringstream
//
// Pool allocator versions of vectors, lists, and maps
//
template <class T> class TVector : public std::vector<T, pool_allocator<T> > {
public:
typedef typename std::vector<T, pool_allocator<T> >::size_type size_type;
TVector() : std::vector<T, pool_allocator<T> >() {}
TVector(const pool_allocator<T>& a) : std::vector<T, pool_allocator<T> >(a) {}
TVector(size_type i): std::vector<T, pool_allocator<T> >(i) {}
};
template <class K, class D, class CMP = std::less<K> >
class TMap : public std::map<K, D, CMP, pool_allocator<std::pair<const K, D> > > {
public:
typedef pool_allocator<std::pair<const K, D> > tAllocator;
TMap() : std::map<K, D, CMP, tAllocator>() {}
// use correct two-stage name lookup supported in gcc 3.4 and above
TMap(const tAllocator& a) : std::map<K, D, CMP, tAllocator>(std::map<K, D, CMP, tAllocator>::key_compare(), a) {}
};
#endif // _COMMON_INCLUDED_