Пример #1
0
        public override void Compile(Emitter.Emitter emitter)
        {
            // check for variable definitions being the only expressions in a block
              if (Statements.Count == 1 && (Statements[0] is VarDeclarationNode || Statements[0] is VarSplatNode))
            Error(Resources.errVariableDefinitionOnly, Statements[0].Lexem);

              emitter.CurrentMethod.Scope.EnterSubScope();

              foreach (var curr in Statements)
              {
            curr.Compile(emitter);

            // eliminate dead code
            if (curr is ReturnNode || (curr is IfNode && (curr as IfNode).AllPathsReturn))
            {
              AllPathsReturn = true;
              break;
            }

            // remove clutter from stack
            if (!curr.GetExpressionType(emitter).IsAnyOf("", "void"))
              emitter.EmitPop();
              }

              emitter.CurrentMethod.Scope.LeaveSubScope();
        }
Пример #2
0
        /// <summary>
        /// Generate action and condition (possibly) for the currently defined emitter
        /// </summary>
        /// <param name="emitter"></param>
        private void CompileBody(Emitter.Emitter emitter)
        {
            // compile action
              emitter.CurrentMethod = emitter.FindMethod(EmitterID, "Action");
              emitter.MakeMethodVirtual(emitter.CurrentMethod);

              LoadClosuredVariables(ActionClosures, emitter);
              Action.Compile(emitter);
              if (!Action.GetExpressionType(emitter).IsAnyOf("void", ""))
            emitter.EmitPop();
              emitter.EmitReturn();

              // compile condition, if any
              if (Condition != null)
              {
            if (Condition.GetExpressionType(emitter) != "bool")
              Error(Resources.errEmitConditionExpected);

            emitter.CurrentMethod = emitter.FindMethod(EmitterID, "Condition");
            emitter.MakeMethodVirtual(emitter.CurrentMethod);
            LoadClosuredVariables(ConditionClosures, emitter);
            Condition.Compile(emitter);
            emitter.EmitReturn();
              }
        }