From f89d021bbe134e3efa0d015a41e9712960cdd009 Mon Sep 17 00:00:00 2001
From: Ryo Nihei <nihei.dev@gmail.com>
Date: Sun, 6 Nov 2022 21:31:46 +0900
Subject: Import source code of lexer generator

From: https://github.com/nihei9/maleeni
---
 driver/token_stream.go | 61 --------------------------------------------------
 1 file changed, 61 deletions(-)
 delete mode 100644 driver/token_stream.go

(limited to 'driver/token_stream.go')

diff --git a/driver/token_stream.go b/driver/token_stream.go
deleted file mode 100644
index eaf56c6..0000000
--- a/driver/token_stream.go
+++ /dev/null
@@ -1,61 +0,0 @@
-package driver
-
-import (
-	"io"
-
-	mldriver "github.com/nihei9/maleeni/driver"
-	spec "github.com/nihei9/vartan/spec/grammar"
-)
-
-type vToken struct {
-	terminalID int
-	tok        *mldriver.Token
-}
-
-func (t *vToken) TerminalID() int {
-	return t.terminalID
-}
-
-func (t *vToken) Lexeme() []byte {
-	return t.tok.Lexeme
-}
-
-func (t *vToken) EOF() bool {
-	return t.tok.EOF
-}
-
-func (t *vToken) Invalid() bool {
-	return t.tok.Invalid
-}
-
-func (t *vToken) Position() (int, int) {
-	return t.tok.Row, t.tok.Col
-}
-
-type tokenStream struct {
-	lex            *mldriver.Lexer
-	kindToTerminal []int
-}
-
-func NewTokenStream(g *spec.CompiledGrammar, src io.Reader) (TokenStream, error) {
-	lex, err := mldriver.NewLexer(mldriver.NewLexSpec(g.LexicalSpecification.Maleeni.Spec), src)
-	if err != nil {
-		return nil, err
-	}
-
-	return &tokenStream{
-		lex:            lex,
-		kindToTerminal: g.LexicalSpecification.Maleeni.KindToTerminal,
-	}, nil
-}
-
-func (l *tokenStream) Next() (VToken, error) {
-	tok, err := l.lex.Next()
-	if err != nil {
-		return nil, err
-	}
-	return &vToken{
-		terminalID: l.kindToTerminal[tok.KindID],
-		tok:        tok,
-	}, nil
-}
-- 
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