Added initial support for do while loops

1 files changed, 12 insertions, 0 deletions

diff --git a/src/Compiler/Parser.java b/src/Compiler/Parser.java
index 5288c67..8bb8951 100644
--- a/src/Compiler/Parser.java
+++ b/src/Compiler/Parser.java
@@ -122,6 +122,9 @@ public class Parser {
     }
 
     private Statement doStatement(){
+        if(matchAndAdvance(TokenType.WHILE)){
+            return whileStatement();
+        }
         Expression variable =expression();
         matchOrError(TokenType.EQUALS, "'=' missing");
         Expression start = expression();
@@ -137,6 +140,15 @@ public class Parser {
 
     }
 
+    private Statement whileStatement(){
+        matchOrError(TokenType.LEFT_PAREN, " missing '(");
+        Expression condition = expression();
+        matchOrError(TokenType.RIGHT_PAREN, " missing ')");
+        Statement.BlockStatement codeBlock = blockStatement();
+        matchOrError(TokenType.DO, "Do while statements end with do");
+        return new Statement.DoWhileStatement(condition,codeBlock);
+    }
+
     private Statement expressionStatement(){
         Expression expression = assignment();
         return new Statement.ExpressionStatement(expression);