Removed the need for parentheses around control flow and looping statements, enforced braces instead. Got rid of the old C-style for loop

src/frontend/parser.nim

@@ -641,16 +641,14 @@ proc raiseStmt(self: Parser): Statement =
 proc forEachStmt(self: Parser): Statement =
     ## Parses C#-like foreach loops
     let tok = self.peek(-1)
-    var enclosingLoop = self.currentLoop
+    let enclosingLoop = self.currentLoop
     self.currentLoop = Loop
-    self.expect(LeftParen, "expecting '(' after 'foreach'")
     self.expect(Identifier)
-    var identifier = newIdentExpr(self.peek(-1), self.scopeDepth)
+    let identifier = newIdentExpr(self.peek(-1), self.scopeDepth)
     self.expect(":")
-    var expression = self.expression()
+    let expression = self.expression()
-    self.expect(RightParen)
+    self.expect(LeftBrace)
-    var body = self.statement()
+    result = newForEachStmt(identifier, expression, self.blockStmt(), tok)
-    result = newForEachStmt(identifier, expression, body, tok)
     self.currentLoop = enclosingLoop
 
 
@@ -700,16 +698,15 @@ proc whileStmt(self: Parser): Statement =
     ## Parses a C-style while loop statement
     let tok = self.peek(-1)
     self.beginScope()
-    var enclosingLoop = self.currentLoop
+    let enclosingLoop = self.currentLoop
+    let condition = self.expression()
+    self.expect(LeftBrace)
     self.currentLoop = Loop
-    self.expect(LeftParen, "expecting '(' before while loop condition")
+    result = newWhileStmt(condition, self.blockStmt(), tok)
-    var condition = self.expression()
-    self.expect(RightParen, "unterminated while loop condition")
-    result = newWhileStmt(condition, self.statement(), tok)
     self.currentLoop = enclosingLoop
     self.endScope()
 
-
+#[
 proc forStmt(self: Parser): Statement =
     ## Parses a C-style for loop
     self.beginScope()
@@ -766,18 +763,18 @@ proc forStmt(self: Parser): Statement =
     result = body
     self.currentLoop = enclosingLoop
     self.endScope()
+]#
 
 
 proc ifStmt(self: Parser): Statement =
     ## Parses if statements
     let tok = self.peek(-1)
-    self.expect(LeftParen, "expecting '(' before if condition")
+    let condition = self.expression()
-    var condition = self.expression()
+    self.expect(LeftBrace)
-    self.expect(RightParen, "expecting ')' after if condition")
+    let thenBranch = self.blockStmt()
-    var thenBranch = self.statement()
     var elseBranch: Statement
     if self.match(Else):
-        elseBranch = self.statement()
+        elseBranch = self.blockStmt()
     result = newIfStmt(condition, thenBranch, elseBranch, tok)
 
 
@@ -1088,9 +1085,11 @@ proc statement(self: Parser): Statement =
         of While:
             discard self.step()
             result = self.whileStmt()
+        #[
         of For:
             discard self.step()
             result = self.forStmt()
+        ]#
         of Foreach:
             discard self.step()
             result = self.forEachStmt()

src/main.nim

@@ -194,7 +194,7 @@ proc runFile(f: string, interactive: bool = false, fromString: bool = false) =
         tokenizer = newLexer()
         parser = newParser()
         compiler = newCompiler()
-        debugger = newDebugger()
+        debugger {.used.} = newDebugger()
         serializer = newSerializer()
         vm = newPeonVM()
         input: string