1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // This file holds the go generate command to run yacc on the grammar in expr.y. 6 // To build expr: 7 // % go generate 8 // % go build 9 10 //go:generate -command yacc go tool yacc 11 //go:generate yacc -o expr.go -p "expr" expr.y 12 13 // Expr is a simple expression evaluator that serves as a working example of 14 // how to use Go's yacc implementation. 15 package main 16