summaryrefslogtreecommitdiff
path: root/Source/cmMacroCommand.cxx
blob: 033f54964d90c94e0d2ca394b8128fa5938acd32 (plain)
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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*============================================================================
  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 "cmMacroCommand.h"

#include "cmAlgorithms.h"
#include "cmake.h"

// define the class for macro commands
class cmMacroHelperCommand : public cmCommand
{
public:
  cmMacroHelperCommand() {}

  ///! clean up any memory allocated by the macro
  ~cmMacroHelperCommand() CM_OVERRIDE {}

  /**
   * This is used to avoid including this command
   * in documentation. This is mainly used by
   * cmMacroHelperCommand and cmFunctionHelperCommand
   * which cannot provide appropriate documentation.
   */
  bool ShouldAppearInDocumentation() const CM_OVERRIDE { return false; }

  /**
   * This is a virtual constructor for the command.
   */
  cmCommand* Clone() CM_OVERRIDE
  {
    cmMacroHelperCommand* newC = new cmMacroHelperCommand;
    // we must copy when we clone
    newC->Args = this->Args;
    newC->Functions = this->Functions;
    newC->FilePath = this->FilePath;
    newC->Policies = this->Policies;
    return newC;
  }

  /**
   * This determines if the command is invoked when in script mode.
   */
  bool IsScriptable() const CM_OVERRIDE { return true; }

  /**
   * This is called when the command is first encountered in
   * the CMakeLists.txt file.
   */
  bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
                         cmExecutionStatus&) CM_OVERRIDE;

  bool InitialPass(std::vector<std::string> const&,
                   cmExecutionStatus&) CM_OVERRIDE
  {
    return false;
  }

  /**
   * The name of the command as specified in CMakeList.txt.
   */
  std::string GetName() const CM_OVERRIDE { return this->Args[0]; }

  cmTypeMacro(cmMacroHelperCommand, cmCommand);

  std::vector<std::string> Args;
  std::vector<cmListFileFunction> Functions;
  cmPolicies::PolicyMap Policies;
  std::string FilePath;
};

bool cmMacroHelperCommand::InvokeInitialPass(
  const std::vector<cmListFileArgument>& args, cmExecutionStatus& inStatus)
{
  // Expand the argument list to the macro.
  std::vector<std::string> expandedArgs;
  this->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 =
      "Macro invoked with incorrect arguments for macro named: ";
    errorMsg += this->Args[0];
    this->SetError(errorMsg);
    return false;
  }

  cmMakefile::MacroPushPop macroScope(this->Makefile, this->FilePath,
                                      this->Policies);

  // set the value of argc
  std::ostringstream argcDefStream;
  argcDefStream << expandedArgs.size();
  std::string argcDef = argcDefStream.str();

  std::vector<std::string>::const_iterator eit =
    expandedArgs.begin() + (this->Args.size() - 1);
  std::string expandedArgn = cmJoin(cmMakeRange(eit, expandedArgs.end()), ";");
  std::string expandedArgv = cmJoin(expandedArgs, ";");
  std::vector<std::string> variables;
  variables.reserve(this->Args.size() - 1);
  for (unsigned int j = 1; j < this->Args.size(); ++j) {
    variables.push_back("${" + this->Args[j] + "}");
  }
  std::vector<std::string> argVs;
  argVs.reserve(expandedArgs.size());
  char argvName[60];
  for (unsigned int j = 0; j < expandedArgs.size(); ++j) {
    sprintf(argvName, "${ARGV%i}", j);
    argVs.push_back(argvName);
  }
  // Invoke all the functions that were collected in the block.
  cmListFileFunction newLFF;
  // for each function
  for (unsigned int c = 0; c < this->Functions.size(); ++c) {
    // Replace the formal arguments and then invoke the command.
    newLFF.Arguments.clear();
    newLFF.Arguments.reserve(this->Functions[c].Arguments.size());
    newLFF.Name = this->Functions[c].Name;
    newLFF.Line = this->Functions[c].Line;

    // for each argument of the current function
    for (std::vector<cmListFileArgument>::iterator k =
           this->Functions[c].Arguments.begin();
         k != this->Functions[c].Arguments.end(); ++k) {
      cmListFileArgument arg;
      arg.Value = k->Value;
      if (k->Delim != cmListFileArgument::Bracket) {
        // replace formal arguments
        for (unsigned int j = 0; j < variables.size(); ++j) {
          cmSystemTools::ReplaceString(arg.Value, variables[j],
                                       expandedArgs[j]);
        }
        // replace argc
        cmSystemTools::ReplaceString(arg.Value, "${ARGC}", argcDef);

        cmSystemTools::ReplaceString(arg.Value, "${ARGN}", expandedArgn);
        cmSystemTools::ReplaceString(arg.Value, "${ARGV}", expandedArgv);

        // if the current argument of the current function has ${ARGV in it
        // then try replacing ARGV values
        if (arg.Value.find("${ARGV") != std::string::npos) {
          for (unsigned int t = 0; t < expandedArgs.size(); ++t) {
            cmSystemTools::ReplaceString(arg.Value, argVs[t], expandedArgs[t]);
          }
        }
      }
      arg.Delim = k->Delim;
      arg.Line = k->Line;
      newLFF.Arguments.push_back(arg);
    }
    cmExecutionStatus status;
    if (!this->Makefile->ExecuteCommand(newLFF, status) ||
        status.GetNestedError()) {
      // The error message should have already included the call stack
      // so we do not need to report an error here.
      macroScope.Quiet();
      inStatus.SetNestedError(true);
      return false;
    }
    if (status.GetReturnInvoked()) {
      inStatus.SetReturnInvoked(true);
      return true;
    }
    if (status.GetBreakInvoked()) {
      inStatus.SetBreakInvoked(true);
      return true;
    }
  }
  return true;
}

bool cmMacroFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
                                               cmMakefile& mf,
                                               cmExecutionStatus&)
{
  // record commands until we hit the ENDMACRO
  // at the ENDMACRO call we shift gears and start looking for invocations
  if (!cmSystemTools::Strucmp(lff.Name.c_str(), "macro")) {
    this->Depth++;
  } else if (!cmSystemTools::Strucmp(lff.Name.c_str(), "endmacro")) {
    // if this is the endmacro for this macro then execute
    if (!this->Depth) {
      mf.AppendProperty("MACROS", this->Args[0].c_str());
      // create a new command and add it to cmake
      cmMacroHelperCommand* f = new cmMacroHelperCommand();
      f->Args = this->Args;
      f->Functions = this->Functions;
      f->FilePath = this->GetStartingContext().FilePath;
      mf.RecordPolicies(f->Policies);
      std::string newName = "_" + this->Args[0];
      mf.GetState()->RenameCommand(this->Args[0], newName);
      mf.GetState()->AddCommand(f);

      // remove the function blocker now that the macro is defined
      mf.RemoveFunctionBlocker(this, lff);
      return true;
    }
    // decrement for each nested macro that ends
    this->Depth--;
  }

  // if it wasn't an endmacro and we are not executing then we must be
  // recording
  this->Functions.push_back(lff);
  return true;
}

bool cmMacroFunctionBlocker::ShouldRemove(const cmListFileFunction& lff,
                                          cmMakefile& mf)
{
  if (!cmSystemTools::Strucmp(lff.Name.c_str(), "endmacro")) {
    std::vector<std::string> expandedArguments;
    mf.ExpandArguments(lff.Arguments, expandedArguments,
                       this->GetStartingContext().FilePath.c_str());
    // if the endmacro has arguments make sure they
    // match the arguments of the macro
    if ((expandedArguments.empty() ||
         (expandedArguments[0] == this->Args[0]))) {
      return true;
    }
  }

  return false;
}

bool cmMacroCommand::InitialPass(std::vector<std::string> const& args,
                                 cmExecutionStatus&)
{
  if (args.empty()) {
    this->SetError("called with incorrect number of arguments");
    return false;
  }

  // create a function blocker
  cmMacroFunctionBlocker* f = new cmMacroFunctionBlocker();
  f->Args.insert(f->Args.end(), args.begin(), args.end());
  this->Makefile->AddFunctionBlocker(f);
  return true;
}