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genbindings/go: normalize handling for void* return types

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mappu 2024-10-16 19:02:26 +13:00
parent c66203d984
commit 896f150f35
1 changed files with 9 additions and 6 deletions
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15
cmd/genbindings/emitgo.go
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@ -335,9 +335,11 @@ func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue
if rt.ParameterType == "void" && !rt.Pointer {
shouldReturn = ""
return shouldReturn + " " + rvalue + "\n" + afterword
} else if rt.ParameterType == "void" && rt.Pointer {
// ...
gfs.imports["unsafe"] = struct{}{}
return assignExpr + " (unsafe.Pointer)(" + rvalue + ")\n"
} else if rt.ParameterType == "char" && rt.Pointer {
// Qt functions normally return QString - anything returning char*
@ -361,6 +363,7 @@ func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue
afterword += namePrefix + "_ret := C.GoStringN(&" + namePrefix + "_ms.data, C.int(int64(" + namePrefix + "_ms.len)))\n"
afterword += "C.free(unsafe.Pointer(" + namePrefix + "_ms))\n"
afterword += assignExpr + namePrefix + "_ret"
return shouldReturn + " " + rvalue + "\n" + afterword
} else if t, ok := rt.QListOf(); ok {
gfs.imports["unsafe"] = struct{}{}
@ -376,6 +379,7 @@ func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue
afterword += "}\n"
afterword += "C.free(unsafe.Pointer(" + namePrefix + "_ma))\n"
afterword += assignExpr + " " + namePrefix + "_ret\n"
return shouldReturn + " " + rvalue + "\n" + afterword
} else if t, ok := rt.QSetOf(); ok {
@ -393,6 +397,7 @@ func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue
afterword += "}\n"
afterword += "C.free(unsafe.Pointer(" + namePrefix + "_ma))\n"
afterword += assignExpr + " " + namePrefix + "_ret\n"
return shouldReturn + " " + rvalue + "\n" + afterword
} else if rt.QtClassType() {
// Construct our Go type based on this inner CABI type
@ -433,15 +438,17 @@ func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue
afterword += assignExpr + " *" + namePrefix + "_goptr\n"
}
}
return shouldReturn + " " + rvalue + "\n" + afterword
} else if rt.IntType() || rt.IsKnownEnum() || rt.IsFlagType() || rt.ParameterType == "bool" || rt.QtCppOriginalType != nil {
// Need to cast Cgo type to Go int type
// Optimize assignment to avoid temporary
return assignExpr + "(" + rt.RenderTypeGo(gfs) + ")(" + rvalue + ")\n"
} else {
panic("what type is this?")
}
return shouldReturn + " " + rvalue + "\n" + afterword
}
func emitGo(src *CppParsedHeader, headerName string, packageName string) (string, error) {
@ -637,10 +644,6 @@ import "C"
if m.ReturnType.QtClassType() && m.ReturnType.ParameterType != "QString" && !(m.ReturnType.Pointer || m.ReturnType.ByRef) {
returnTypeDecl = "*" + returnTypeDecl
}
if (m.ReturnType.ParameterType == "char" || m.ReturnType.ParameterType == "void") && m.ReturnType.Pointer {
gfs.imports["unsafe"] = struct{}{}
returnTypeDecl = "unsafe.Pointer"
}
rvalue := `C.` + goClassName + `_` + m.SafeMethodName() + `(` + forwarding + `)`