Fix lexer for floats

Author: antonmedv

parser/lexer/lexer_test.go

@@ -15,16 +15,12 @@ type lexTest struct {
 	tokens []Token
 }
 
-type lexErrorTest struct {
-	input string
-	err   string
-}
-
 var lexTests = []lexTest{
 	{
-		".5 1 02 1e3 0xFF 1.2e-4 1_000_000 _42 -.5",
+		".5 0.025 1 02 1e3 0xFF 1.2e-4 1_000_000 _42 -.5",
 		[]Token{
 			{Kind: Number, Value: ".5"},
+			{Kind: Number, Value: "0.025"},
 			{Kind: Number, Value: "1"},
 			{Kind: Number, Value: "02"},
 			{Kind: Number, Value: "1e3"},

parser/lexer/state.go

@@ -73,7 +73,7 @@ func (l *lexer) scanNumber() bool {
 			l.backup()
 			return true
 		}
-		l.accept(digits)
+		l.acceptRun(digits)
 	}
 	if l.accept("eE") {
 		l.accept("+-")