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regexp/syntax: add package and Parse commentary

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Fixes #2954.

R=golang-dev, bradfitz, rsc, r
CC=golang-dev
https://golang.org/cl/5645077
This commit is contained in:
Rob Pike 2012-02-10 15:57:12 +11:00
parent 13443ccc2a
commit 1ceb561629
1 changed files with 7 additions and 0 deletions
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7
src/pkg/regexp/syntax/parse.go
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@ -2,6 +2,10 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package syntax parses regular expressions into parse trees and compiles
// parse trees into programs. Most clients of regular expressions will use
// the facilities of package regexp (such as Compile and Match) instead of
// this package.
package syntax
import (
@ -648,6 +652,9 @@ func literalRegexp(s string, flags Flags) *Regexp {
// Parsing.
// Parse parses a regular expression string s, controlled by the specified
// Flags, and returns a regular expression parse tree. The syntax is
// described in the top-level comment for package regexp.
func Parse(s string, flags Flags) (*Regexp, error) {
if flags&Literal != 0 {
// Trivial parser for literal string.