backslash used as operator (integer division) about gogll

[dequeb]

Thank you for your suggestion.

[goccmack]

gogll does not allow escaped chars in string_lit. You can define and use a division token as in the following grammar:

package "test"

div : '\\' ;

int : number {number} ;

Expr : int div int ;

You can test the grammar as follows:

package test

import (
"test/lexer"
"test/parser"
"testing"
)

const input = 12 \ 4

func Test1(t *testing.T) {
l := lexer.New([]rune(input))
_, errs := parser.Parse(l)
if len(errs) > 0 {
t.Fail()
}
}

go test -v
=== RUN Test1
--- PASS: Test1 (0.00s)
PASS
ok test 0.414s