Method genJNIFuncSignature

bind/genjava.go:731–792

(o *types.Func, sName string, jm *java.Func, proxy, isjava bool)

}

func (g *JavaGen) genJNIFuncSignature(o *types.Func, sName string, jm *java.Func, proxy, isjava bool) {
	sig := o.Type().(*types.Signature)
	res := sig.Results()

	var ret string
	switch res.Len() {
	case 2:
		ret = g.jniType(res.At(0).Type())
	case 1:
		if isErrorType(res.At(0).Type()) {
			ret = "void"
		} else {
			ret = g.jniType(res.At(0).Type())
		}
	case 0:
		ret = "void"
	default:
		g.errorf("too many result values: %s", o)
		return
	}

	g.Printf("JNIEXPORT %s JNICALL\n", ret)
	g.Printf("Java_%s_", g.jniPkgName())
	if sName != "" {
		if proxy {
			g.Printf("%s", java.JNIMangle(g.className()))
			// 0024 is the mangled form of $, for naming inner classes.
			g.Printf("_00024proxy%s", sName)
		} else {
			g.Printf("%s", java.JNIMangle(g.javaTypeName(sName)))
		}
	} else {
		g.Printf("%s", java.JNIMangle(g.className()))
	}
	g.Printf("_")
	if jm != nil {
		g.Printf("%s", jm.JNIName)
	} else {
		oName := javaNameReplacer(lowerFirst(o.Name()))
		g.Printf("%s", java.JNIMangle(oName))
	}
	g.Printf("(JNIEnv* env, ")
	if sName != "" {
		g.Printf("jobject __this__")
	} else {
		g.Printf("jclass _clazz")
	}
	params := sig.Params()
	i := 0
	if isjava && params.Len() > 0 && params.At(0).Name() == "this" {
		// Skip the implicit this argument, if any.
		i = 1
	}
	for ; i < params.Len(); i++ {
		g.Printf(", ")
		v := sig.Params().At(i)
		name := g.paramName(params, i)
		jt := g.jniType(v.Type())