Lexer:skip whitespace

Author: Eble

src/main/java/com/ParserExample.java

@@ -6,11 +6,9 @@ public class ParserExample {
 
     void parsePrint() throws Exception {
         m_lexer.expect(com.compiler.TokenIntf.Type.PRINT);
-        m_lexer.expect(com.compiler.TokenIntf.Type.WHITESPACE);
         com.compiler.Token number = m_lexer.lookAhead();
         m_lexer.expect(com.compiler.TokenIntf.Type.INTEGER);
         m_lexer.expect(com.compiler.TokenIntf.Type.SEMICOLON);
-        m_lexer.expect(com.compiler.TokenIntf.Type.WHITESPACE);
         System.out.println(number.m_value);
     }
 
@@ -32,8 +30,7 @@ public static void main(String[] args) throws Exception {
         parser.parse("""
                 PRINT 1;
                 PRINT 2;
-                PRINT 3;
-                """);
+                PRINT 3;""");
     }
 
 }

src/main/java/com/compiler/Lexer.java

@@ -190,7 +190,13 @@ public Token lookAhead() {
     }
 
     public void advance() throws Exception {
-        m_currentToken = nextToken();
+        Token token = nextToken();
+        while (token.m_type == Token.Type.WHITESPACE ||
+                token.m_type == Token.Type.MULTILINECOMMENT ||
+                token.m_type == Token.Type.LINECOMMENT) {
+            token = nextToken();
+        }
+        m_currentToken = token;
     }
 
     public void expect(Token.Type tokenType) throws Exception {