mirror of
https://github.com/golang/go
synced 2024-11-23 00:10:07 -07:00
87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"reflect"
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)
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func typedump(s string) {
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t := reflect.ParseTypeString(s);
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print(reflect.TypeToString(t),"; size = ", t.Size(), "\n");
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}
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func valuedump(s string) {
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t := reflect.ParseTypeString(s);
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v := reflect.NewInitValue(t);
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switch v.Kind() {
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case reflect.Int8Kind:
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v.(reflect.Int8Value).Put(8);
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case reflect.Int16Kind:
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v.(reflect.Int16Value).Put(16);
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case reflect.Int32Kind:
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v.(reflect.Int32Value).Put(32);
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case reflect.Int64Kind:
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v.(reflect.Int64Value).Put(64);
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case reflect.Uint8Kind:
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v.(reflect.Uint8Value).Put(8);
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case reflect.Uint16Kind:
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v.(reflect.Uint16Value).Put(16);
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case reflect.Uint32Kind:
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v.(reflect.Uint32Value).Put(32);
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case reflect.Uint64Kind:
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v.(reflect.Uint64Value).Put(64);
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case reflect.Float32Kind:
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v.(reflect.Float32Value).Put(320.0);
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case reflect.Float64Kind:
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v.(reflect.Float32Value).Put(640.0);
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case reflect.StringKind:
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v.(reflect.StringValue).Put("stringy cheese");
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}
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print(s, " value = ", reflect.ValueToString(v), "\n");
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}
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func main() {
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var s string;
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var t reflect.Type;
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typedump("int8");
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typedump("int16");
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typedump("int32");
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typedump("int64");
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typedump("uint8");
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typedump("uint16");
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typedump("uint32");
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typedump("uint64");
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typedump("float32");
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typedump("float64");
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typedump("float80");
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typedump("int8");
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typedump("**int8");
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typedump("**P.integer");
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typedump("[32]int32");
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typedump("[]int8");
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typedump("*map[string]int32");
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typedump("*chan<-string");
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typedump("struct {c *chan *int32; d float32}");
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typedump("*(a int8, b int32)");
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typedump("struct {c *(? *chan *P.integer, ? *int8)}");
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typedump("struct {a int8; b int32}");
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typedump("struct {a int8; b int8; b int32}");
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typedump("struct {a int8; b int8; c int8; b int32}");
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typedump("struct {a int8; b int8; c int8; d int8; b int32}");
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typedump("struct {a int8; b int8; c int8; d int8; e int8; b int32}");
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valuedump("int8");
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valuedump("int16");
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valuedump("int32");
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valuedump("int64");
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valuedump("uint8");
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valuedump("uint16");
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valuedump("uint32");
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valuedump("uint64");
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valuedump("string");
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}
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