Golang Var.Name方法代码示例

func (g *javaGen) genJNIField(o *types.TypeName, f *types.Var) {
	if t := f.Type(); !g.isSupported(t) {
		g.Printf("// skipped field %s with unsupported type: %T\n\n", o.Name(), t)
		return
	}
	// setter
	g.Printf("JNIEXPORT void JNICALL\n")
	g.Printf("Java_%s_%s_00024%s_set%s(JNIEnv *env, jobject this, %s v) {\n", g.jniPkgName(), g.className(), o.Name(), f.Name(), g.jniType(f.Type()))
	g.Indent()
	g.Printf("int32_t o = go_seq_to_refnum(env, this);\n")
	g.genJavaToC("v", f.Type(), modeRetained)
	g.Printf("proxy%s_%s_%s_Set(o, _v);\n", g.pkgPrefix, o.Name(), f.Name())
	g.genRelease("v", f.Type(), modeRetained)
	g.Outdent()
	g.Printf("}\n\n")

	// getter
	g.Printf("JNIEXPORT %s JNICALL\n", g.jniType(f.Type()))
	g.Printf("Java_%s_%s_00024%s_get%s(JNIEnv *env, jobject this) {\n", g.jniPkgName(), g.className(), o.Name(), f.Name())
	g.Indent()
	g.Printf("int32_t o = go_seq_to_refnum(env, this);\n")
	g.Printf("%s r0 = ", g.cgoType(f.Type()))
	g.Printf("proxy%s_%s_%s_Get(o);\n", g.pkgPrefix, o.Name(), f.Name())
	g.genCToJava("_r0", "r0", f.Type(), modeRetained)
	g.Printf("return _r0;\n")
	g.Outdent()
	g.Printf("}\n\n")
}

func (g *ObjcGen) genVarM(o *types.Var) {
	if t := o.Type(); !g.isSupported(t) {
		g.Printf("// skipped variable %s with unsupported type: %T\n\n", o.Name(), t)
		return
	}
	objcType := g.objcType(o.Type())

	// setter
	g.Printf("+ (void) set%s:(%s)v {\n", o.Name(), objcType)
	g.Indent()
	g.genWrite("v", o.Type(), modeRetained)
	g.Printf("var_set%s_%s(_v);\n", g.pkgPrefix, o.Name())
	g.genRelease("v", o.Type(), modeRetained)
	g.Outdent()
	g.Printf("}\n\n")

	// getter
	g.Printf("+ (%s) %s {\n", objcType, objcNameReplacer(lowerFirst(o.Name())))
	g.Indent()
	g.Printf("%s r0 = ", g.cgoType(o.Type()))
	g.Printf("var_get%s_%s();\n", g.pkgPrefix, o.Name())
	g.genRead("_r0", "r0", o.Type(), modeRetained)
	g.Printf("return _r0;\n")
	g.Outdent()
	g.Printf("}\n\n")
}

func (p *exporter) field(f *types.Var) {
	// anonymous fields have "" name
	name := ""
	if !f.Anonymous() {
		name = f.Name()
	}

	// qualifiedName will always emit the field package for
	// anonymous fields because "" is not an exported name.
	p.qualifiedName(f.Pkg(), name)
	p.typ(f.Type())
}

func (c *funcContext) varPtrName(o *types.Var) string {
	if isPkgLevel(o) && o.Exported() {
		return c.pkgVar(o.Pkg()) + "." + o.Name() + "$ptr"
	}

	name, ok := c.p.varPtrNames[o]
	if !ok {
		name = c.newVariableWithLevel(o.Name()+"$ptr", isPkgLevel(o))
		c.p.varPtrNames[o] = name
	}
	return name
}

func (g *ObjcGen) genSetter(oName string, f *types.Var) {
	t := f.Type()

	g.Printf("- (void)set%s:(%s)v {\n", f.Name(), g.objcType(t))
	g.Indent()
	g.Printf("int32_t refnum = go_seq_go_to_refnum(self._ref);\n")
	g.genWrite("v", f.Type(), modeRetained)
	g.Printf("proxy%s_%s_%s_Set(refnum, _v);\n", g.pkgPrefix, oName, f.Name())
	g.genRelease("v", f.Type(), modeRetained)
	g.Outdent()
	g.Printf("}\n\n")
}

func (g *ObjcGen) genGetter(oName string, f *types.Var) {
	t := f.Type()
	g.Printf("- (%s)%s {\n", g.objcType(t), objcNameReplacer(lowerFirst(f.Name())))
	g.Indent()
	g.Printf("int32_t refnum = go_seq_go_to_refnum(self._ref);\n")
	g.Printf("%s r0 = ", g.cgoType(f.Type()))
	g.Printf("proxy%s_%s_%s_Get(refnum);\n", g.pkgPrefix, oName, f.Name())
	g.genRead("_r0", "r0", f.Type(), modeRetained)
	g.Printf("return _r0;\n")
	g.Outdent()
	g.Printf("}\n\n")
}

func (tr *Transformer) matchWildcard(xobj *types.Var, y ast.Expr) bool {
	name := xobj.Name()

	if tr.verbose {
		fmt.Fprintf(os.Stderr, "%s: wildcard %s -> %s?: ",
			tr.fset.Position(y.Pos()), name, astString(tr.fset, y))
	}

	// Check that y is assignable to the declared type of the param.
	yt := tr.info.TypeOf(y)
	if yt == nil {
		// y has no type.
		// Perhaps it is an *ast.Ellipsis in [...]T{}, or
		// an *ast.KeyValueExpr in T{k: v}.
		// Clearly these pseudo-expressions cannot match a
		// wildcard, but it would nice if we had a way to ignore
		// the difference between T{v} and T{k:v} for structs.
		return false
	}
	if !types.AssignableTo(yt, xobj.Type()) {
		if tr.verbose {
			fmt.Fprintf(os.Stderr, "%s not assignable to %s\n", yt, xobj.Type())
		}
		return false
	}

	// A wildcard matches any expression.
	// If it appears multiple times in the pattern, it must match
	// the same expression each time.
	if old, ok := tr.env[name]; ok {
		// found existing binding
		tr.allowWildcards = false
		r := tr.matchExpr(old, y)
		if tr.verbose {
			fmt.Fprintf(os.Stderr, "%t secondary match, primary was %s\n",
				r, astString(tr.fset, old))
		}
		tr.allowWildcards = true
		return r
	}

	if tr.verbose {
		fmt.Fprintf(os.Stderr, "primary match\n")
	}

	tr.env[name] = y // record binding
	return true
}

func (c *converter) convertVar(v *gotypes.Var) *types.Var {
	if v == nil {
		return nil
	}
	if v, ok := c.converted[v]; ok {
		return v.(*types.Var)
	}
	ret := types.NewVar(
		token.Pos(v.Pos()),
		c.ret,
		v.Name(),
		c.convertType(v.Type()),
	)
	c.converted[v] = ret
	return ret
}

func (g *objcGen) genGetter(desc string, f *types.Var) {
	t := f.Type()
	if isErrorType(t) {
		t = types.Typ[types.String]
	}
	s := &funcSummary{
		name:      lowerFirst(f.Name()),
		ret:       g.objcType(t),
		retParams: []paramInfo{{typ: t, name: "ret_"}},
	}

	g.Printf("- %s {\n", s.asMethod(g))
	g.Indent()
	g.genFunc(desc+"_DESCRIPTOR_", desc+"_FIELD_"+f.Name()+"_GET_", s, true)
	g.Outdent()
	g.Printf("}\n\n")
}

func (g *objcGen) genSetter(desc string, f *types.Var) {
	t := f.Type()
	if isErrorType(t) {
		t = types.Typ[types.String]
	}
	s := &funcSummary{
		name:   "set" + f.Name(),
		ret:    "void",
		params: []paramInfo{{typ: t, name: "v"}},
	}

	g.Printf("- %s {\n", s.asMethod(g))
	g.Indent()
	g.genFunc(desc+"_DESCRIPTOR_", desc+"_FIELD_"+f.Name()+"_SET_", s, true)
	g.Outdent()
	g.Printf("}\n\n")
}

// fieldName is like qualifiedName but it doesn't record the package
// for blank (_) or exported names.
func (p *exporter) fieldName(f *types.Var) {
	name := f.Name()

	// anonymous field with unexported base type name: use "?" as field name
	// (bname != "" per spec, but we are conservative in case of errors)
	if f.Anonymous() {
		base := f.Type()
		if ptr, ok := base.(*types.Pointer); ok {
			base = ptr.Elem()
		}
		if named, ok := base.(*types.Named); ok && !named.Obj().Exported() {
			name = "?"
		}
	}

	p.string(name)
	if name == "?" || name != "_" && !f.Exported() {
		p.pkg(f.Pkg(), false)
	}
}

func (g *javaGen) genJNIVar(o *types.Var) {
	if t := o.Type(); !g.isSupported(t) {
		g.Printf("// skipped variable %s with unsupported type: %T\n\n", o.Name(), t)
		return
	}
	// setter
	g.Printf("JNIEXPORT void JNICALL\n")
	g.Printf("Java_%s_%s_set%s(JNIEnv *env, jclass clazz, %s v) {\n", g.jniPkgName(), g.className(), o.Name(), g.jniType(o.Type()))
	g.Indent()
	g.genJavaToC("v", o.Type(), modeRetained)
	g.Printf("var_set%s_%s(_v);\n", g.pkgPrefix, o.Name())
	g.genRelease("v", o.Type(), modeRetained)
	g.Outdent()
	g.Printf("}\n\n")

	// getter
	g.Printf("JNIEXPORT %s JNICALL\n", g.jniType(o.Type()))
	g.Printf("Java_%s_%s_get%s(JNIEnv *env, jclass clazz) {\n", g.jniPkgName(), g.className(), o.Name())
	g.Indent()
	g.Printf("%s r0 = ", g.cgoType(o.Type()))
	g.Printf("var_get%s_%s();\n", g.pkgPrefix, o.Name())
	g.genCToJava("_r0", "r0", o.Type(), modeRetained)
	g.Printf("return _r0;\n")
	g.Outdent()
	g.Printf("}\n\n")
}

func (g *objcGen) genVarM(o *types.Var) {
	varDesc := fmt.Sprintf("%q", g.pkg.Name()+"."+o.Name())
	objcType := g.objcType(o.Type())

	// setter
	s1 := &funcSummary{
		name:   "set" + o.Name(),
		ret:    "void",
		params: []paramInfo{{typ: o.Type(), name: "v"}},
	}
	g.Printf("+ (void) %s:(%s)v {\n", s1.name, objcType)
	g.Indent()
	g.genFunc(varDesc, "1", s1, false) // false: not instance method.
	g.Outdent()
	g.Printf("}\n\n")

	// getter
	s2 := &funcSummary{
		name:      lowerFirst(o.Name()),
		ret:       objcType,
		retParams: []paramInfo{{typ: o.Type(), name: "ret"}},
	}
	g.Printf("+ (%s) %s {\n", s2.ret, s2.name)
	g.Indent()
	g.genFunc(varDesc, "2", s2, false)
	g.Outdent()
	g.Printf("}\n\n")
}

func (g *objcGen) genVarM(o *types.Var) {
	varDesc := fmt.Sprintf("%q", g.pkg.Name()+"."+o.Name())
	objcType := g.objcType(o.Type())

	// setter
	s1 := &funcSummary{
		name:   g.namePrefix + "_set" + o.Name(),
		ret:    "void",
		params: []paramInfo{{typ: o.Type(), name: "v"}},
	}
	g.Printf("void %s(%s v) {\n", s1.name, objcType)
	g.Indent()
	g.genFunc(varDesc, "1", s1, false)
	g.Outdent()
	g.Printf("}\n\n")

	// getter
	s2 := &funcSummary{
		name:      g.namePrefix + o.Name(),
		ret:       objcType,
		retParams: []paramInfo{{typ: o.Type(), name: "ret"}},
	}
	g.Printf("%s %s() {\n", s2.ret, s2.name)
	g.Indent()
	g.genFunc(varDesc, "2", s2, false)
	g.Outdent()
	g.Printf("}\n\n")
}

func (g *javaGen) genVar(o *types.Var) {
	jType := g.javaType(o.Type())
	varDesc := fmt.Sprintf("%s.%s", g.pkg.Name(), o.Name())

	// setter
	g.Printf("public static void set%s(%s v) {\n", o.Name(), jType)
	g.Indent()
	g.Printf("Seq in = new Seq();\n")
	g.Printf("Seq out = new Seq();\n")
	g.Printf("in.write%s;\n", seqWrite(o.Type(), "v"))
	g.Printf("Seq.send(%q, 1, in, out);\n", varDesc)
	g.Outdent()
	g.Printf("}\n")
	g.Printf("\n")

	// getter
	g.Printf("public static %s get%s() {\n", jType, o.Name())
	g.Indent()
	g.Printf("Seq in = new Seq();\n")
	g.Printf("Seq out = new Seq();\n")
	g.Printf("Seq.send(%q, 2, in, out);\n", varDesc)
	g.Printf("%s ", jType)
	g.genRead("v", "out", o.Type())
	g.Printf("return v;\n")
	g.Outdent()
	g.Printf("}\n")
	g.Printf("\n")
}