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macros now support varargs

This commit is contained in:
Ken Martin 2004-04-26 11:11:57 -04:00
parent 7c0844d2f4
commit 2d53fcf035
2 changed files with 37 additions and 3 deletions
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33
Source/cmMacroCommand.cxx
View File

@ -58,8 +58,10 @@ IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
// Expand the argument list to the macro.
std::vector<std::string> expandedArguments;
mf.ExpandArguments(lff.m_Arguments, expandedArguments);
// make sure the number of arguments matches
if (expandedArguments.size() != m_Args.size() - 1)
// make sure the number of arguments passed is at least the number
// required by the signature
if (expandedArguments.size() < m_Args.size() - 1)
{
cmOStringStream error;
error << "Error in cmake code at\n"
@ -70,6 +72,10 @@ IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
return true;
}
// now set the new argcDef
char argcDef[64];
sprintf(argcDef,"%i",expandedArguments.size());
// Invoke all the functions that were collected in the block.
cmListFileFunction newLFF;
for(unsigned int c = 0; c < m_Functions.size(); ++c)
@ -85,6 +91,7 @@ IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
k != m_Functions[c].m_Arguments.end(); ++k)
{
tmps = k->Value;
// replace formal arguments
for (unsigned int j = 1; j < m_Args.size(); ++j)
{
variable = "${";
@ -93,6 +100,28 @@ IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
cmSystemTools::ReplaceString(tmps, variable.c_str(),
expandedArguments[j-1].c_str());
}
// replace argc, argv arguments
for (unsigned int j = 1; j < m_Args.size(); ++j)
{
variable = "${ARGC}";
cmSystemTools::ReplaceString(tmps, variable.c_str(),argcDef);
}
for (unsigned int j = 1; j < m_Args.size(); ++j)
{
// since this could be slow, first check if there is an ARGV
// only then do the inner loop. PS std::string sucks
char argvName[60];
if (tmps.find("${ARGV") != std::string::npos)
{
for (unsigned int t = 0; t < expandedArguments.size(); ++t)
{
sprintf(argvName,"${ARGV%i}",t);
cmSystemTools::ReplaceString(tmps, argvName,
expandedArguments[t].c_str());
}
}
}
arg.Value = tmps;
arg.Quoted = k->Quoted;
newLFF.m_Arguments.push_back(arg);

7
Source/cmMacroCommand.h
View File

@ -101,7 +101,12 @@ public:
"but before the matching ENDMACRO, are not invoked until the macro "
"is invoked. When it is invoked, the commands recorded in the "
"macro are first modified by replacing formal parameters (${arg1}) with "
"the arguments passed, and then invoked as normal commands.";
"the arguments passed, and then invoked as normal commands. In "
"addition to referencing the formal parameters you can reference "
"the variable ARGC which will be set to the number of arguments "
"passed into the function as well as ARGV0 ARGV1 ARGV2 ... which "
"will have the actual values of the arguments passed in. This "
"fascilitates creating macros with optional arguments.";
}
cmTypeMacro(cmMacroCommand, cmCommand);