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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmIfCommand.h"
#include "cm_memory.hxx"
#include "cm_static_string_view.hxx"
#include "cm_string_view.hxx"
#include "cmConditionEvaluator.h"
#include "cmExecutionStatus.h"
#include "cmExpandedCommandArgument.h"
#include "cmFunctionBlocker.h"
#include "cmListFileCache.h"
#include "cmMakefile.h"
#include "cmMessageType.h"
#include "cmOutputConverter.h"
#include "cmSystemTools.h"
#include "cmake.h"
#include <string>
#include <utility>
static std::string cmIfCommandError(
std::vector<cmExpandedCommandArgument> const& args)
{
std::string err = "given arguments:\n ";
for (cmExpandedCommandArgument const& i : args) {
err += " ";
err += cmOutputConverter::EscapeForCMake(i.GetValue());
}
err += "\n";
return err;
}
class cmIfFunctionBlocker : public cmFunctionBlocker
{
public:
cm::string_view StartCommandName() const override { return "if"_s; }
cm::string_view EndCommandName() const override { return "endif"_s; }
bool ArgumentsMatch(cmListFileFunction const& lff,
cmMakefile&) const override;
bool Replay(std::vector<cmListFileFunction> functions,
cmExecutionStatus& inStatus) override;
std::vector<cmListFileArgument> Args;
bool IsBlocking;
bool HasRun = false;
bool ElseSeen = false;
};
bool cmIfFunctionBlocker::ArgumentsMatch(cmListFileFunction const& lff,
cmMakefile&) const
{
return lff.Arguments.empty() || lff.Arguments == this->Args;
}
bool cmIfFunctionBlocker::Replay(std::vector<cmListFileFunction> functions,
cmExecutionStatus& inStatus)
{
cmMakefile& mf = inStatus.GetMakefile();
// execute the functions for the true parts of the if statement
int scopeDepth = 0;
for (cmListFileFunction const& func : functions) {
// keep track of scope depth
if (func.Name.Lower == "if") {
scopeDepth++;
}
if (func.Name.Lower == "endif") {
scopeDepth--;
}
// watch for our state change
if (scopeDepth == 0 && func.Name.Lower == "else") {
if (this->ElseSeen) {
cmListFileBacktrace bt = mf.GetBacktrace(func);
mf.GetCMakeInstance()->IssueMessage(
MessageType::FATAL_ERROR,
"A duplicate ELSE command was found inside an IF block.", bt);
cmSystemTools::SetFatalErrorOccured();
return true;
}
this->IsBlocking = this->HasRun;
this->HasRun = true;
this->ElseSeen = true;
// if trace is enabled, print a (trivially) evaluated "else"
// statement
if (!this->IsBlocking && mf.GetCMakeInstance()->GetTrace()) {
mf.PrintCommandTrace(func);
}
} else if (scopeDepth == 0 && func.Name.Lower == "elseif") {
if (this->ElseSeen) {
cmListFileBacktrace bt = mf.GetBacktrace(func);
mf.GetCMakeInstance()->IssueMessage(
MessageType::FATAL_ERROR,
"An ELSEIF command was found after an ELSE command.", bt);
cmSystemTools::SetFatalErrorOccured();
return true;
}
if (this->HasRun) {
this->IsBlocking = true;
} else {
// if trace is enabled, print the evaluated "elseif" statement
if (mf.GetCMakeInstance()->GetTrace()) {
mf.PrintCommandTrace(func);
}
std::string errorString;
std::vector<cmExpandedCommandArgument> expandedArguments;
mf.ExpandArguments(func.Arguments, expandedArguments);
MessageType messType;
cmListFileContext conditionContext =
cmListFileContext::FromCommandContext(
func, this->GetStartingContext().FilePath);
cmConditionEvaluator conditionEvaluator(mf, conditionContext,
mf.GetBacktrace(func));
bool isTrue =
conditionEvaluator.IsTrue(expandedArguments, errorString, messType);
if (!errorString.empty()) {
std::string err = cmIfCommandError(expandedArguments);
err += errorString;
cmListFileBacktrace bt = mf.GetBacktrace(func);
mf.GetCMakeInstance()->IssueMessage(messType, err, bt);
if (messType == MessageType::FATAL_ERROR) {
cmSystemTools::SetFatalErrorOccured();
return true;
}
}
if (isTrue) {
this->IsBlocking = false;
this->HasRun = true;
}
}
}
// should we execute?
else if (!this->IsBlocking) {
cmExecutionStatus status(mf);
mf.ExecuteCommand(func, status);
if (status.GetReturnInvoked()) {
inStatus.SetReturnInvoked();
return true;
}
if (status.GetBreakInvoked()) {
inStatus.SetBreakInvoked();
return true;
}
if (status.GetContinueInvoked()) {
inStatus.SetContinueInvoked();
return true;
}
}
}
return true;
}
//=========================================================================
bool cmIfCommand(std::vector<cmListFileArgument> const& args,
cmExecutionStatus& inStatus)
{
cmMakefile& makefile = inStatus.GetMakefile();
std::string errorString;
std::vector<cmExpandedCommandArgument> expandedArguments;
makefile.ExpandArguments(args, expandedArguments);
MessageType status;
cmConditionEvaluator conditionEvaluator(
makefile, makefile.GetExecutionContext(), makefile.GetBacktrace());
bool isTrue =
conditionEvaluator.IsTrue(expandedArguments, errorString, status);
if (!errorString.empty()) {
std::string err = "if " + cmIfCommandError(expandedArguments);
err += errorString;
if (status == MessageType::FATAL_ERROR) {
makefile.IssueMessage(MessageType::FATAL_ERROR, err);
cmSystemTools::SetFatalErrorOccured();
return true;
}
makefile.IssueMessage(status, err);
}
{
auto fb = cm::make_unique<cmIfFunctionBlocker>();
// if is isn't true block the commands
fb->IsBlocking = !isTrue;
if (isTrue) {
fb->HasRun = true;
}
fb->Args = args;
makefile.AddFunctionBlocker(std::move(fb));
}
return true;
}
|
