#67: skip unexpected character in input

scanner/lexer.go

@@ -9,6 +9,7 @@ import (
 	"sync"
 	"unicode"
 
+	"github.com/z7zmey/php-parser/errors"
 	"github.com/z7zmey/php-parser/position"
 
 	"github.com/cznic/golex/lex"
@@ -446,6 +447,7 @@ type Lexer struct {
 	tokenBytesBuf *bytes.Buffer
 	TokenPool     sync.Pool
 	PositionPool  sync.Pool
+	Errors        []*errors.Error
 }
 
 // Rune2Class returns the rune integer id
@@ -492,6 +494,21 @@ func NewLexer(src io.Reader, fName string) *Lexer {
 	}
 }
 
+func (l *Lexer) Error(msg string) {
+	chars := l.Token()
+	firstChar := chars[0]
+	lastChar := chars[len(chars)-1]
+
+	pos := position.NewPosition(
+		l.File.Line(firstChar.Pos()),
+		l.File.Line(lastChar.Pos()),
+		int(firstChar.Pos()),
+		int(lastChar.Pos()),
+	)
+
+	l.Errors = append(l.Errors, errors.NewError(msg, pos))
+}
+
 func (l *Lexer) ungetChars(n int) []lex.Char {
 	l.Unget(l.Lookahead())