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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmGeneratorExpression_h
#define cmGeneratorExpression_h
#include "cmStandardIncludes.h"
#include "cmListFileCache.h"
#include <stack>
#include <cmsys/RegularExpression.hxx>
#include <cmsys/auto_ptr.hxx>
class cmTarget;
class cmMakefile;
class cmListFileBacktrace;
struct cmGeneratorExpressionEvaluator;
struct cmGeneratorExpressionDAGChecker;
class cmCompiledGeneratorExpression;
/** \class cmGeneratorExpression
* \brief Evaluate generate-time query expression syntax.
*
* cmGeneratorExpression instances are used by build system generator
* implementations to evaluate the $<> generator expression syntax.
* Generator expressions are evaluated just before the generate step
* writes strings into the build system. They have knowledge of the
* build configuration which is not available at configure time.
*/
class cmGeneratorExpression
{
public:
/** Construct. */
cmGeneratorExpression(cmListFileBacktrace const& backtrace);
~cmGeneratorExpression();
cmsys::auto_ptr<cmCompiledGeneratorExpression> Parse(
std::string const& input);
cmsys::auto_ptr<cmCompiledGeneratorExpression> Parse(const char* input);
enum PreprocessContext {
StripAllGeneratorExpressions,
BuildInterface,
InstallInterface
};
static std::string Preprocess(const std::string &input,
PreprocessContext context);
static void Split(const std::string &input,
std::vector<std::string> &output);
private:
cmGeneratorExpression(const cmGeneratorExpression &);
void operator=(const cmGeneratorExpression &);
cmListFileBacktrace const& Backtrace;
};
class cmCompiledGeneratorExpression
{
public:
const char* Evaluate(cmMakefile* mf, const char* config,
bool quiet = false,
cmTarget *headTarget = 0,
cmTarget *currentTarget = 0,
cmGeneratorExpressionDAGChecker *dagChecker = 0) const;
const char* Evaluate(cmMakefile* mf, const char* config,
bool quiet,
cmTarget *headTarget,
cmGeneratorExpressionDAGChecker *dagChecker) const;
/** Get set of targets found during evaluations. */
std::set<cmTarget*> const& GetTargets() const
{ return this->Targets; }
std::map<cmStdString, cmStdString> const& GetSeenTargetProperties() const
{ return this->SeenTargetProperties; }
~cmCompiledGeneratorExpression();
std::string GetInput() const
{
return this->Input;
}
cmListFileBacktrace GetBacktrace() const
{
return this->Backtrace;
}
private:
cmCompiledGeneratorExpression(cmListFileBacktrace const& backtrace,
const char *input);
friend class cmGeneratorExpression;
cmCompiledGeneratorExpression(const cmCompiledGeneratorExpression &);
void operator=(const cmCompiledGeneratorExpression &);
cmListFileBacktrace Backtrace;
std::vector<cmGeneratorExpressionEvaluator*> Evaluators;
const std::string Input;
bool NeedsParsing;
mutable std::set<cmTarget*> Targets;
mutable std::map<cmStdString, cmStdString> SeenTargetProperties;
mutable std::string Output;
};
#endif
|
