Example #1
0
func t_match(program inst.InstSlice, text string, t *testing.T) {
	expected := []machines.Match{machines.Match{len(program) - 1, 0, 1, 1, 1, len(text), []byte(text)}}
	if expected[0].EndColumn == 0 {
		expected[0].EndColumn = 1
	}
	i := 0
	scan := machines.LexerEngine(program, []byte(text))
	for tc, m, err, scan := scan(0); scan != nil; tc, m, err, scan = scan(tc) {
		t.Log("match", m)
		if err != nil {
			t.Error("error", err)
		} else if !m.Equals(&expected[i]) {
			t.Error(m, expected[i])
		}
		i++
	}
	if i != len(expected) {
		t.Error("unconsumed matches", expected[i:])
	}
}
Example #2
0
func (self *Lexer) Scanner(text []byte) (*Scanner, error) {
	if self.program == nil || len(self.patterns) != len(self.matches) {
		err := self.Compile()
		if err != nil {
			return nil, err
		}
	}

	scan := machines.LexerEngine(self.program, text)

	// prevent the user from modifying the text under scan
	text_copy := make([]byte, len(text))
	copy(text_copy, text)

	return &Scanner{
		lexer: self,
		scan:  scan,
		Text:  text_copy,
		TC:    0,
	}, nil
}