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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/*============================================================================
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.
============================================================================*/
#include "cmGeneratorExpression.h"
#include "cmMakefile.h"
#include "cmTarget.h"
//----------------------------------------------------------------------------
cmGeneratorExpression::cmGeneratorExpression(
cmMakefile* mf, const char* config,
cmListFileBacktrace const& backtrace, bool quiet):
Makefile(mf), Config(config), Backtrace(backtrace), Quiet(quiet)
{
this->TargetInfo.compile("^\\$<TARGET"
"(|_SONAME|_LINKER)" // File with what purpose?
"_FILE(|_NAME|_DIR):" // Filename component.
"([A-Za-z0-9_.-]+)" // Target name.
">$");
}
//----------------------------------------------------------------------------
const char* cmGeneratorExpression::Process(std::string const& input)
{
return this->Process(input.c_str());
}
//----------------------------------------------------------------------------
const char* cmGeneratorExpression::Process(const char* input)
{
this->Data.clear();
// We construct and evaluate expressions directly in the output
// buffer. Each expression is replaced by its own output value
// after evaluation. A stack of barriers records the starting
// indices of open (pending) expressions.
for(const char* c = input; *c; ++c)
{
if(c[0] == '$' && c[1] == '<')
{
this->Barriers.push(this->Data.size());
this->Data.push_back('$');
this->Data.push_back('<');
c += 1;
}
else if(c[0] == '>' && !this->Barriers.empty())
{
this->Data.push_back('>');
if(!this->Evaluate()) { break; }
this->Barriers.pop();
}
else
{
this->Data.push_back(c[0]);
}
}
// Return a null-terminated output value.
this->Data.push_back('\0');
return &*this->Data.begin();
}
//----------------------------------------------------------------------------
bool cmGeneratorExpression::Evaluate()
{
// The top-most barrier points at the beginning of the expression.
size_t barrier = this->Barriers.top();
// Construct a null-terminated representation of the expression.
this->Data.push_back('\0');
const char* expr = &*(this->Data.begin()+barrier);
// Evaluate the expression.
std::string result;
if(this->Evaluate(expr, result))
{
// Success. Replace the expression with its evaluation result.
this->Data.erase(this->Data.begin()+barrier, this->Data.end());
this->Data.insert(this->Data.end(), result.begin(), result.end());
return true;
}
else if(!this->Quiet)
{
// Failure. Report the error message.
cmOStringStream e;
e << "Error evaluating generator expression:\n"
<< " " << expr << "\n"
<< result;
this->Makefile->GetCMakeInstance()
->IssueMessage(cmake::FATAL_ERROR, e.str().c_str(),
this->Backtrace);
return false;
}
return true;
}
//----------------------------------------------------------------------------
bool cmGeneratorExpression::Evaluate(const char* expr, std::string& result)
{
if(this->TargetInfo.find(expr))
{
if(!this->EvaluateTargetInfo(result))
{
return false;
}
}
else if(strcmp(expr, "$<CONFIGURATION>") == 0)
{
result = this->Config? this->Config : "";
}
else
{
result = "Expression syntax not recognized.";
return false;
}
return true;
}
//----------------------------------------------------------------------------
bool cmGeneratorExpression::EvaluateTargetInfo(std::string& result)
{
// Lookup the referenced target.
std::string name = this->TargetInfo.match(3);
cmTarget* target = this->Makefile->FindTargetToUse(name.c_str());
if(!target)
{
result = "No target \"" + name + "\"";
return false;
}
if(target->GetType() >= cmTarget::UTILITY &&
target->GetType() != cmTarget::UNKNOWN_LIBRARY)
{
result = "Target \"" + name + "\" is not an executable or library.";
return false;
}
this->Targets.insert(target);
// Lookup the target file with the given purpose.
std::string purpose = this->TargetInfo.match(1);
if(purpose == "")
{
// The target implementation file (.so.1.2, .dll, .exe, .a).
result = target->GetFullPath(this->Config, false, true);
}
else if(purpose == "_LINKER")
{
// The file used to link to the target (.so, .lib, .a).
if(!target->IsLinkable())
{
result = ("TARGET_LINKER_FILE is allowed only for libraries and "
"executables with ENABLE_EXPORTS.");
return false;
}
result = target->GetFullPath(this->Config, target->HasImportLibrary());
}
else if(purpose == "_SONAME")
{
// The target soname file (.so.1).
if(target->IsDLLPlatform())
{
result = "TARGET_SONAME_FILE is not allowed for DLL target platforms.";
return false;
}
if(target->GetType() != cmTarget::SHARED_LIBRARY)
{
result = "TARGET_SONAME_FILE is allowed only for SHARED libraries.";
return false;
}
result = target->GetDirectory(this->Config);
result += "/";
result += target->GetSOName(this->Config);
}
// Extract the requested portion of the full path.
std::string part = this->TargetInfo.match(2);
if(part == "_NAME")
{
result = cmSystemTools::GetFilenameName(result);
}
else if(part == "_DIR")
{
result = cmSystemTools::GetFilenamePath(result);
}
return true;
}
|
