token skip

src/frontend/parser.ts

@@ -140,6 +140,17 @@ export class Parser extends Consumer<TToken> {
     const token = this.at();
 
     switch (token.type) {
+      case TokenType.Dot: {
+        const node = {
+          kind: NodeType.Skip,
+          end: this.at().location,
+          start: this.at().location
+        } as ISkipNode;
+
+        this.eat();
+        return node;
+      }
+
       case TokenType.Identifier: {
         const node = {
           symbol: token.value,

src/runtime/interpreter.ts

@@ -26,7 +26,11 @@ export class Evaluator {
     let lastEvaluated: IRuntimeVal = RuntimeHelper.createNull();
 
     for (const statement of program.body) {
-      lastEvaluated = this.evaluate(statement, env);
+      const currVal = this.evaluate(statement, env);
+
+      if (currVal.type !== Type.Skip) {
+        lastEvaluated = currVal;
+      }
     }
 
     return lastEvaluated;
@@ -190,6 +194,10 @@ export class Evaluator {
         return this.evaluateVariableDeclaration(node as IVariableDeclarationNode, env);
       }
 
+      case NodeType.Skip: {
+        return RuntimeHelper.createSkip();
+      }
+
       default: {
         env.errorManager?.raise(new UnrecognizedStatementError(node.start));
         return RuntimeHelper.createNull();