mirror of
https://github.com/golang/go
synced 2024-10-05 02:11:22 -06:00
2b7fde3406
R=r OCL=35736 CL=35746
93 lines
1.6 KiB
Go
93 lines
1.6 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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"./_obj/eval";
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"bufio";
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"flag";
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"go/parser";
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"go/scanner";
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"io";
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"os";
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)
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var filename = flag.String("f", "", "file to run");
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func main() {
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flag.Parse();
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w := eval.NewWorld();
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if *filename != "" {
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data, err := io.ReadFile(*filename);
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if err != nil {
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println(err.String());
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os.Exit(1);
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}
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file, err := parser.ParseFile(*filename, data, 0);
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if err != nil {
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println(err.String());
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os.Exit(1);
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}
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code, err := w.CompileDeclList(file.Decls);
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if err != nil {
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if list, ok := err.(scanner.ErrorList); ok {
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for _, e := range list {
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println(e.String());
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}
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} else {
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println(err.String());
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}
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os.Exit(1);
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}
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_, err := code.Run();
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if err != nil {
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println(err.String());
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os.Exit(1);
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}
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code, err = w.Compile("init()");
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if code != nil {
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_, err := code.Run();
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if err != nil {
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println(err.String());
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os.Exit(1);
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}
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}
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code, err = w.Compile("main()");
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if err != nil {
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println(err.String());
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os.Exit(1);
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}
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_, err = code.Run();
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if err != nil {
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println(err.String());
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os.Exit(1);
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}
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os.Exit(0);
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}
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r := bufio.NewReader(os.Stdin);
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for {
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print("; ");
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line, err := r.ReadString('\n');
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if err != nil {
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break;
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}
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code, err := w.Compile(line);
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if err != nil {
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println(err.String());
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continue;
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}
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v, err := code.Run();
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if err != nil {
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println(err.String());
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continue;
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}
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if v != nil {
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println(v.String());
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}
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}
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}
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