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Mini Shell
Mini Shell
// Code generated by re2c, DO NOT EDIT.
//line "go/eof/05_generic_api_eof_rule.re":1
//go:generate re2go $INPUT -o $OUTPUT
package main
// Returns "fake" terminating null if cursor has reached limit.
func peek(str string, cur int, lim int) byte {
if cur >= lim {
return 0 // fake null
} else {
return str[cur]
}
}
// Expects a string without terminating null.
func lex(str string) int {
var cur, mar int
lim := len(str)
count := 0
for {
//line "go/eof/05_generic_api_eof_rule.go":23
{
var yych byte
yych = peek(str, cur, lim)
switch (yych) {
case ' ':
goto yy3
case '\'':
goto yy5
default:
if (cur >= lim) {
goto yy10
}
goto yy1
}
yy1:
cur += 1
yy2:
//line "go/eof/05_generic_api_eof_rule.re":31
{ return -1 }
//line "go/eof/05_generic_api_eof_rule.go":43
yy3:
cur += 1
yych = peek(str, cur, lim)
switch (yych) {
case ' ':
goto yy3
default:
goto yy4
}
yy4:
//line "go/eof/05_generic_api_eof_rule.re":34
{ continue }
//line "go/eof/05_generic_api_eof_rule.go":56
yy5:
cur += 1
mar = cur
yych = peek(str, cur, lim)
if (yych >= 0x01) {
goto yy7
}
if (cur >= lim) {
goto yy2
}
yy6:
cur += 1
yych = peek(str, cur, lim)
yy7:
switch (yych) {
case '\'':
goto yy8
case '\\':
goto yy9
default:
if (cur >= lim) {
goto yy11
}
goto yy6
}
yy8:
cur += 1
//line "go/eof/05_generic_api_eof_rule.re":33
{ count += 1; continue }
//line "go/eof/05_generic_api_eof_rule.go":86
yy9:
cur += 1
yych = peek(str, cur, lim)
if (yych <= 0x00) {
if (cur >= lim) {
goto yy11
}
goto yy6
}
goto yy6
yy10:
//line "go/eof/05_generic_api_eof_rule.re":32
{ return count }
//line "go/eof/05_generic_api_eof_rule.go":100
yy11:
cur = mar
goto yy2
}
//line "go/eof/05_generic_api_eof_rule.re":35
}
}
func main() {
assert_eq := func(x, y int) { if x != y { panic("error") } }
assert_eq(lex(""), 0)
assert_eq(lex("'qu\000tes' 'are' 'fine: \\'' "), 3)
assert_eq(lex("'unterminated\\'"), -1)
}
Zerion Mini Shell 1.0