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genbindings/go: return C char* as string

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mappu 2024-10-16 19:01:54 +13:00
parent dc21dc3163
commit c66203d984
1 changed files with 8 additions and 2 deletions
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10
cmd/genbindings/emitgo.go
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@ -329,7 +329,7 @@ func (gfs *goFileState) emitParameterGo2CABIForwarding(p CppParameter) (preamble
func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue string) string { func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue string) string {
shouldReturn := "return " shouldReturn := assignExpr // "return "
afterword := "" afterword := ""
namePrefix := makeNamePrefix(rt.ParameterName) namePrefix := makeNamePrefix(rt.ParameterName)
@ -343,10 +343,16 @@ func (gfs *goFileState) emitCabiToGo(assignExpr string, rt CppParameter, rvalue
// Qt functions normally return QString - anything returning char* // Qt functions normally return QString - anything returning char*
// is something like QByteArray.Data() where it returns an unsafe // is something like QByteArray.Data() where it returns an unsafe
// internal pointer // internal pointer
// However in case this is a signal, we need to be able to marshal both
// forwards and backwards with the same types, this has to be a string
// in both cases
// This is not a miqt_string and therefore MIQT did not allocate it,
// and therefore we don't have to free it either
gfs.imports["unsafe"] = struct{}{} gfs.imports["unsafe"] = struct{}{}
shouldReturn = namePrefix + "_ret := " shouldReturn = namePrefix + "_ret := "
afterword += assignExpr + " (unsafe.Pointer)(" + namePrefix + "_ret)\n" afterword += assignExpr + " C.GoString(" + namePrefix + "_ret)\n"
return shouldReturn + " " + rvalue + "\n" + afterword
} else if rt.ParameterType == "QString" { } else if rt.ParameterType == "QString" {
gfs.imports["unsafe"] = struct{}{} gfs.imports["unsafe"] = struct{}{}