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New default argument wrapping approach. This adds default argument support for statically typed languages, fixes wrapping of default arguments that are non-public plus fixes other bugs where SWIG could not or failed to correctly lookup up the default value in the symbol table.

Browse source 
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@6310 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
William S Fulton 2004-10-04 20:32:28 +00:00
commit c4757bbbd4
1 changed files with 22 additions and 14 deletions
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36
Source/Modules/emit.cxx
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@ -218,21 +218,24 @@ int emit_num_arguments(ParmList *parms) {
/* -----------------------------------------------------------------------------
* emit_num_required()
*
* Computes the number of required arguments. This is function is safe for
* Computes the number of required arguments. This function is safe for
* use with multi-valued typemaps and knows how to skip over everything
* properly.
* properly. Note that it does count parameters which have a default value.
* ----------------------------------------------------------------------------- */
int emit_num_required(ParmList *parms) {
Parm *p = parms;
int nargs = 0;
Parm *first_default_arg = 0;
while (p) {
if (Getattr(p,"tmap:in") && checkAttribute(p,"tmap:in:numinputs","0")) {
p = Getattr(p,"tmap:in:next");
} else {
if (Getattr(p,"value")) break;
if (Getattr(p,"tmap:default")) break;
if (Getattr(p,"value"))
if (!first_default_arg)
first_default_arg = p;
nargs+= GetInt(p,"tmap:in:numinputs");
if (Getattr(p,"tmap:in")) {
p = Getattr(p,"tmap:in:next");
@ -242,21 +245,26 @@ int emit_num_required(ParmList *parms) {
}
}
/* Print message for non-default arguments */
while (p) {
if (Getattr(p,"tmap:in") && checkAttribute(p,"tmap:in:numinputs","0")) {
p = Getattr(p,"tmap:in:next");
} else {
if (!Getattr(p,"value") && (!Getattr(p,"tmap:default"))) {
Swig_error(Getfile(p),Getline(p),"Non-optional argument '%s' follows an optional argument.\n",Getattr(p,"name"));
}
if (Getattr(p,"tmap:in")) {
p = Getattr(p,"tmap:in:next");
/* Print error message for non-default arguments following default arguments */
/* The error message is printed more than once with most language modules, this ought to be fixed */
if (first_default_arg) {
p = first_default_arg;
while (p) {
if (Getattr(p,"tmap:in") && checkAttribute(p,"tmap:in:numinputs","0")) {
p = Getattr(p,"tmap:in:next");
} else {
p = nextSibling(p);
if (!Getattr(p,"value") && (!Getattr(p,"tmap:default"))) {
Swig_error(Getfile(p),Getline(p),"Non-optional argument '%s' follows an optional argument.\n",Getattr(p,"name"));
}
if (Getattr(p,"tmap:in")) {
p = Getattr(p,"tmap:in:next");
} else {
p = nextSibling(p);
}
}
}
}
/* DB 04/02/2003: Not sure this is necessary with tmap:in:numinputs */
/*
if (parms && (p = Getattr(parms,"emit:varargs"))) {