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Don't emit functions added by %extend into C structs

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This is never going to work and just results in generating uncompilable
code.

In principle, we could either generate wrappers for these functions
while still handling the struct as a plain C struct, or switch to
generating class-like wrappers for it if it's %extended with any
functions, but for now just ignore them as this is the simplest thing to
do.

Incidentally, this makes the default_args_c test pass again now, after
the last merge with master pulled in such %extend directives into it.
This commit is contained in:
Vadim Zeitlin 2019-08-03 02:37:18 +02:00
commit b0d99a1cc3
2 changed files with 11 additions and 3 deletions
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1
Source/Include/swigwarn.h
View file

@ -256,6 +256,7 @@
/* please leave 740-759 free for Python */
#define WARN_C_TYPEMAP_CTYPE_UNDEF 760
#define WARN_C_UNSUPPORTTED 779
/* please leave 760-779 free for C */

13
Source/Modules/c.cxx
View file

@ -1273,9 +1273,16 @@ ready:
for ( Node* node = firstChild(n); node; node = nextSibling(node)) {
String* const ntype = nodeType(node);
if (Cmp(ntype, "cdecl") == 0) {
String* const var_decl = make_c_var_decl(node);
Printv(out, cindent, var_decl, ";\n", NIL);
Delete(var_decl);
SwigType* t = NewString(Getattr(node, "type"));
SwigType_push(t, Getattr(node, "decl"));
t = SwigType_typedef_resolve_all(t);
if (SwigType_isfunction(t)) {
Swig_warning(WARN_C_UNSUPPORTTED, input_file, line_number, "Extending C struct with %s is not currently supported, ignored.\n", SwigType_str(t, 0));
} else {
String* const var_decl = make_c_var_decl(node);
Printv(out, cindent, var_decl, ";\n", NIL);
Delete(var_decl);
}
} else if (Cmp(ntype, "enum") == 0) {
// This goes directly into f_wrappers_types, before this struct declaration.
emit_one(node);