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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
//
//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), symbol(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;
};
glslang::TSymbol* symbol; // if a symbol-table lookup was done already, this is the result
};
//
// 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&);
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_
|
