mirror of
https://github.com/golang/go
synced 2024-11-23 00:50:05 -07:00
5a90ede8a4
- initial try-out of AST data structures - removed test_parser (not working anymore - parser needs more infrastructure) SVN=128089
40 lines
804 B
Go
40 lines
804 B
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 Scanner "scanner"
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func Scan(filename, src string) {
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S := new(Scanner.Scanner);
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S.Open(filename, src);
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for {
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tok, pos, val := S.Scan();
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print pos, ": ", Scanner.TokenName(tok);
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if tok == Scanner.IDENT || tok == Scanner.NUMBER || tok == Scanner.STRING {
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print " ", val;
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}
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print "\n";
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if tok == Scanner.EOF {
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return;
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}
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}
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}
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func main() {
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for i := 1; i < sys.argc(); i++ {
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var src string;
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var ok bool;
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src, ok = sys.readfile(sys.argv(i));
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if ok {
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print "scanning " + sys.argv(i) + "\n";
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Scan(sys.argv(i), src);
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} else {
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print "error: cannot read " + sys.argv(i) + "\n";
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}
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}
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}
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