First cut at a Go pretty printer:

- code scavenged from Go-in-Go front-end (will merge back)
- using "symbol-table" free parsing to build AST
- no printing yet

R=r
OCL=15504
CL=15504

1 files changed, 63 insertions, 0 deletions

diff --git a/usr/gri/pretty/utils.go b/usr/gri/pretty/utils.go
new file mode 100644
index 000000000..0764a2f8c
--- /dev/null
+++ b/usr/gri/pretty/utils.go
@@ -0,0 +1,63 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package Utils
+
+
+export func BaseName(s string) string {
+	// TODO this is not correct for non-ASCII strings!
+	i := len(s) - 1;
+	for i >= 0 && s[i] != '/' {
+		if s[i] > 128 {
+			panic("non-ASCII string");
+		}
+		i--;
+	}
+	return s[i + 1 : len(s)];
+}
+
+
+export func Contains(s, sub string, pos int) bool {
+	end := pos + len(sub);
+	return pos >= 0 && end <= len(s) && s[pos : end] == sub;
+}
+
+
+export func TrimExt(s, ext string) string {
+	i := len(s) - len(ext);
+	if i >= 0 && s[i : len(s)] == ext {
+		s = s[0 : i];
+	}
+	return s;
+}
+
+
+export func IntToString(x, base int) string {
+	x0 := x;
+	if x < 0 {
+		x = -x;
+		if x < 0 {
+			panic("smallest int not handled");
+		}
+	} else if x == 0 {
+		return "0";
+	}
+
+	// x > 0
+	hex := "0123456789ABCDEF";
+	var buf [32] byte;
+	i := len(buf);
+	for x > 0 {
+		i--;
+		buf[i] = hex[x % base];
+		x /= base;
+	}
+	
+	if x0 < 0 {
+		i--;
+		buf[i] = '-';
+	}
+	
+	return string(buf)[i : len(buf)];
+}