Greater than and Less Than

2024-03-18 16:17:13 -04:00
parent d454572870
commit b47a39e1b2
11 changed files with 116 additions and 43 deletions
--- a/lexer/lexer.go
+++ b/lexer/lexer.go
@@ -84,9 +84,21 @@ func (l *Lexer) NextToken() token.Token {
 	case '*':
 		tok = newToken(token.ASTERISK, l.ch)
 	case '<':
-		tok = newToken(token.LT, l.ch)
+		if l.peekChar() == '=' {
+			l.readChar()
+			tok = newToken(token.LTE, l.ch)
+			tok.Literal = "<="
+		} else {
+			tok = newToken(token.LT, l.ch)
+		}
 	case '>':
-		tok = newToken(token.GT, l.ch)
+		if l.peekChar() == '=' {
+			l.readChar()
+			tok = newToken(token.GTE, l.ch)
+			tok.Literal = ">="
+		} else {
+			tok = newToken(token.GT, l.ch)
+		}
 	case ';':
 		tok = newToken(token.SEMICOLON, l.ch)
 	case ',':