[refactoring] remove scanner interface

internal/php5/parser.go

@@ -11,13 +11,9 @@ import (
 	"github.com/z7zmey/php-parser/pkg/token"
 )
 
-func (lval *yySymType) Token(t *scanner.Token) {
-	lval.token = t
-}
-
 // Parser structure
 type Parser struct {
-	Lexer           scanner.Scanner
+	Lexer           *scanner.Lexer
 	currentToken    *scanner.Token
 	positionBuilder *positionbuilder.PositionBuilder
 	rootNode        ast.Vertex

internal/php7/parser.go

@@ -10,13 +10,9 @@ import (
 	"github.com/z7zmey/php-parser/pkg/token"
 )
 
-func (lval *yySymType) Token(t *scanner.Token) {
-	lval.token = t
-}
-
 // Parser structure
 type Parser struct {
-	Lexer           scanner.Scanner
+	Lexer           *scanner.Lexer
 	currentToken    *scanner.Token
 	positionBuilder *positionbuilder.PositionBuilder
 	rootNode        ast.Vertex

internal/scanner/lexer.go

@@ -10,11 +10,6 @@ import (
 	"github.com/z7zmey/php-parser/pkg/token"
 )
 
-type Scanner interface {
-	Lex() *Token
-	ReturnTokenToPool(t *Token)
-}
-
 type Config struct {
 	WithHiddenTokens bool
 	ErrHandlerFunc   func(*errors.Error)