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swig -go: treat non-const references as pointers

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Also clean up the handling of int* and int& to convert between the C
type int and the Go type int, which are often different sizes.

Fixes #2210
This commit is contained in:
Ian Lance Taylor 2022-03-05 21:57:36 -08:00
commit 27bdbc1f05
4 changed files with 115 additions and 19 deletions
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29
Source/Modules/go.cxx
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@ -377,7 +377,7 @@ private:
/* ---------------------------------------------------------------------
* top()
*
* For 6g/8g, we are going to create the following files:
* For gc, we are going to create the following files:
*
* 1) A .c or .cxx file compiled with gcc. This file will contain
* function wrappers. Each wrapper will take a pointer to a
@ -5284,7 +5284,7 @@ private:
* gcCTypeForGoValue()
*
* Given a type, return the C/C++ type which will be used to catch
* the value in Go. This is the 6g/8g version.
* the value in Go. This is the gc version.
* ---------------------------------------------------------------------- */
String *gcCTypeForGoValue(Node *n, SwigType *type, String *name) {
@ -5293,7 +5293,19 @@ private:
String *tail = NewString("");
SwigType *t = SwigType_typedef_resolve_all(type);
if (!SwigType_isreference(t)) {
bool is_const_ref = false;
if (SwigType_isreference(t)) {
SwigType* tt = Copy(t);
SwigType_del_reference(tt);
if (SwigType_isqualifier(tt)) {
String* q = SwigType_parm(tt);
if (Strcmp(q, "const") == 0) {
is_const_ref = true;
}
}
Delete(tt);
}
if (!is_const_ref) {
while (Strncmp(gt, "*", 1) == 0) {
Replace(gt, "*", "", DOH_REPLACE_FIRST);
Printv(tail, "*", NULL);
@ -5436,17 +5448,6 @@ private:
return ret;
}
/* ----------------------------------------------------------------------
* gccgoCTypeForGoValue()
*
* Given a type, return the C/C++ type which will be used to catch
* the value in Go. This is the gccgo version.
* ---------------------------------------------------------------------- */
String *gccgoCTypeForGoValue(Node *n, SwigType *type, String *name) {
return gcCTypeForGoValue(n, type, name);
}
/* ----------------------------------------------------------------------
* goTypeIsInterface
*