go/test/syntax/forvar.go

// errorcheck

// Copyright 2010 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 main

func main() {
	var x int // avoid undefined: x error below with recursive-descent parser
	for var x = 0; x < 10; x++ {	// ERROR "var declaration not allowed in for initializer"
test: use testlib (final 61) X ,s;^// \$G (\$D/)?\$F\.go $;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A $;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out $;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go $;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5671080 2012-02-16 21:51:04 -07:00			`// errorcheck`
gc: improved syntax errors * example-based syntax errors (go.errors) * enable bison's more specific errors and translate grammar token names into tokens like ++ * test cases R=ken2, r, ken3 CC=golang-dev https://golang.org/cl/194085 2010-01-27 00:13:22 -07:00
			`// Copyright 2010 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 main`

			`func main() {`
cmd/compile/internal/gc: recursive-descent parser This is a translation of the yacc-based parser with adjustements to make the grammar work for a recursive-descent parser followed by cleanups and simplifications. The yacc actions were mostly literally copied for correctness with better temporary names. A few of the syntax tests were adjusted for slightly different error messages (it is very difficult to match the yacc-based error messages in all cases, and sometimes the new parser could produce better errors). The new parser is enabled by default. To switch back to the yacc-based parser, set -oldparser. To hardwire the switch back, uncomment "oldparser = 1" in lex.go. - passes all.bash - ~18% reduced parse time per file on average for make.bash - ~3% reduced compile time for building cmd/compile Change-Id: Icb5651bb9d8b9f66261762d2c94a03793050d4ce Reviewed-on: https://go-review.googlesource.com/16665 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> 2015-11-04 10:21:49 -07:00			`var x int // avoid undefined: x error below with recursive-descent parser`
gc: improved syntax errors * example-based syntax errors (go.errors) * enable bison's more specific errors and translate grammar token names into tokens like ++ * test cases R=ken2, r, ken3 CC=golang-dev https://golang.org/cl/194085 2010-01-27 00:13:22 -07:00			`for var x = 0; x < 10; x++ { // ERROR "var declaration not allowed in for initializer"`