mirror of
https://github.com/golang/go
synced 2024-11-23 00:10:07 -07:00
102 lines
2.5 KiB
Go
102 lines
2.5 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 Build "build"
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import Globals "globals"
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import Compilation "compilation"
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func PrintHelp() {
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print(
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"go (" + Build.time + ")\n" +
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"usage:\n" +
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" go { flag } { file }\n" +
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" -d debug mode, additional self tests and prints\n" +
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" -o file explicit object file\n" +
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" -r recursively update imported packages in current directory\n" +
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" -p print package interface\n" +
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" -v [0 .. 3] verbosity level\n" +
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" -6g 6g compatibility mode\n" +
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" -scan scan only, print tokens\n" +
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" -parse parse only, print productions\n" +
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" -ast analyse only, print ast\n" +
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" -deps print package dependencies\n" +
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" -token_chan use token channel to scan and parse in parallel\n"
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);
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}
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var argno int = 1;
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func Next() string {
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arg := "";
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if argno < sys.argc() {
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arg = sys.argv(argno);
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argno++;
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}
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return arg;
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}
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func main() {
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arg := Next();
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if arg == "" {
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PrintHelp();
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return;
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}
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// collect flags and files
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flags := new(*Globals.Flags);
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files := Globals.NewList();
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for arg != "" {
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switch arg {
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case "-d": flags.debug = true;
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case "-o": flags.object_file = Next();
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print("note: -o flag ignored at the moment\n");
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case "-r": flags.update_packages = true;
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case "-p": flags.print_interface = true;
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case "-v":
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arg = Next();
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switch arg {
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case "0", "1", "2", "3":
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flags.verbosity = uint(arg[0] - '0');
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default:
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// anything else is considered the next argument
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flags.verbosity = 1;
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continue;
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}
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case "-6g": flags.sixg = true;
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case "-scan": flags.scan = true;
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print("note: -scan flag ignored at the moment\n");
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case "-parse": flags.parse = true;
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print("note: -parse flag ignored at the moment\n");
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case "-ast": flags.ast = true;
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case "-deps": flags.deps = true;
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print("note: -deps flag ignored at the moment\n");
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case "-token_chan": flags.token_chan = true;
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default: files.AddStr(arg);
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}
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arg = Next();
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}
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// setup environment
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env := new(*Globals.Environment);
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env.Import = &Compilation.Import;
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env.Export = &Compilation.Export;
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env.Compile = &Compilation.Compile;
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// compile files
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for p := files.first; p != nil; p = p.next {
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// setup compilation
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comp := new(*Globals.Compilation);
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comp.flags = flags;
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comp.env = env;
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// compile
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Compilation.Compile(comp, p.str);
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}
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}
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