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
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmFunctionCommand.h"
#include <sstream>
#include <utility>
#include "cm_memory.hxx"
#include "cm_static_string_view.hxx"
#include "cm_string_view.hxx"
#include "cmAlgorithms.h"
#include "cmExecutionStatus.h"
#include "cmFunctionBlocker.h"
#include "cmListFileCache.h"
#include "cmMakefile.h"
#include "cmPolicies.h"
#include "cmRange.h"
#include "cmState.h"
#include "cmStringAlgorithms.h"
namespace {
// define the class for function commands
class cmFunctionHelperCommand
{
public:
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
bool operator()(std::vector<cmListFileArgument> const& args,
cmExecutionStatus& inStatus) const;
std::vector<std::string> Args;
std::vector<cmListFileFunction> Functions;
cmPolicies::PolicyMap Policies;
std::string FilePath;
};
}
bool cmFunctionHelperCommand::operator()(
std::vector<cmListFileArgument> const& args,
cmExecutionStatus& inStatus) const
{
cmMakefile& makefile = inStatus.GetMakefile();
// Expand the argument list to the function.
std::vector<std::string> expandedArgs;
makefile.ExpandArguments(args, expandedArgs);
// make sure the number of arguments passed is at least the number
// required by the signature
if (expandedArgs.size() < this->Args.size() - 1) {
std::string errorMsg =
"Function invoked with incorrect arguments for function named: ";
errorMsg += this->Args[0];
inStatus.SetError(errorMsg);
return false;
}
cmMakefile::FunctionPushPop functionScope(&makefile, this->FilePath,
this->Policies);
// set the value of argc
std::ostringstream strStream;
strStream << expandedArgs.size();
makefile.AddDefinition("ARGC", strStream.str());
makefile.MarkVariableAsUsed("ARGC");
// set the values for ARGV0 ARGV1 ...
for (unsigned int t = 0; t < expandedArgs.size(); ++t) {
std::ostringstream tmpStream;
tmpStream << "ARGV" << t;
makefile.AddDefinition(tmpStream.str(), expandedArgs[t]);
makefile.MarkVariableAsUsed(tmpStream.str());
}
// define the formal arguments
for (unsigned int j = 1; j < this->Args.size(); ++j) {
makefile.AddDefinition(this->Args[j], expandedArgs[j - 1]);
}
// define ARGV and ARGN
std::string argvDef = cmJoin(expandedArgs, ";");
std::vector<std::string>::const_iterator eit =
expandedArgs.begin() + (this->Args.size() - 1);
std::string argnDef = cmJoin(cmMakeRange(eit, expandedArgs.end()), ";");
makefile.AddDefinition("ARGV", argvDef);
makefile.MarkVariableAsUsed("ARGV");
makefile.AddDefinition("ARGN", argnDef);
makefile.MarkVariableAsUsed("ARGN");
// Invoke all the functions that were collected in the block.
// for each function
for (cmListFileFunction const& func : this->Functions) {
cmExecutionStatus status(makefile);
if (!makefile.ExecuteCommand(func, status) || status.GetNestedError()) {
// The error message should have already included the call stack
// so we do not need to report an error here.
functionScope.Quiet();
inStatus.SetNestedError();
return false;
}
if (status.GetReturnInvoked()) {
return true;
}
}
// pop scope on the makefile
return true;
}
class cmFunctionFunctionBlocker : public cmFunctionBlocker
{
public:
cm::string_view StartCommandName() const override { return "function"_s; }
cm::string_view EndCommandName() const override { return "endfunction"_s; }
bool ArgumentsMatch(cmListFileFunction const&,
cmMakefile& mf) const override;
bool Replay(std::vector<cmListFileFunction> functions,
cmExecutionStatus& status) override;
std::vector<std::string> Args;
};
bool cmFunctionFunctionBlocker::ArgumentsMatch(cmListFileFunction const& lff,
cmMakefile& mf) const
{
std::vector<std::string> expandedArguments;
mf.ExpandArguments(lff.Arguments, expandedArguments,
this->GetStartingContext().FilePath.c_str());
return expandedArguments.empty() || expandedArguments[0] == this->Args[0];
}
bool cmFunctionFunctionBlocker::Replay(
std::vector<cmListFileFunction> functions, cmExecutionStatus& status)
{
cmMakefile& mf = status.GetMakefile();
// create a new command and add it to cmake
cmFunctionHelperCommand f;
f.Args = this->Args;
f.Functions = std::move(functions);
f.FilePath = this->GetStartingContext().FilePath;
mf.RecordPolicies(f.Policies);
mf.GetState()->AddScriptedCommand(this->Args[0], std::move(f));
return true;
}
bool cmFunctionCommand(std::vector<std::string> const& args,
cmExecutionStatus& status)
{
if (args.empty()) {
status.SetError("called with incorrect number of arguments");
return false;
}
// create a function blocker
{
auto fb = cm::make_unique<cmFunctionFunctionBlocker>();
cmAppend(fb->Args, args);
status.GetMakefile().AddFunctionBlocker(std::move(fb));
}
return true;
}
|
