コード例 #1
0
ファイル: ApplyExp.java プロジェクト: afmckinney/ai2-kawa
 public static void compileToArray(Expression[] args, Compilation comp) {
   CodeAttr code = comp.getCode();
   if (args.length == 0) {
     code.emitGetStatic(Compilation.noArgsField);
     return;
   }
   code.emitPushInt(args.length);
   code.emitNewArray(Type.pointer_type);
   for (int i = 0; i < args.length; ++i) {
     Expression arg = args[i];
     if (comp.usingCPStyle() && !(arg instanceof QuoteExp) && !(arg instanceof ReferenceExp)) {
       // If the argument involves a CPStyle function call, we will
       // have to save and restore anything on the JVM stack into
       // fields in the CallFrame.  This is expensive, so defer
       // pushing the duplicated argument array and the index
       // until *after* we've calculated the argument.  The downside
       // is that we have to do some extra stack operations.
       // However, these are cheap (and get compiled away when
       // compiling to native code).
       arg.compileWithPosition(comp, Target.pushObject);
       code.emitSwap();
       code.emitDup(1, 1);
       code.emitSwap();
       code.emitPushInt(i);
       code.emitSwap();
     } else {
       code.emitDup(Compilation.objArrayType);
       code.emitPushInt(i);
       arg.compileWithPosition(comp, Target.pushObject);
     }
     code.emitArrayStore(Type.pointer_type);
   }
 }
コード例 #2
0
 public void emitTestIf(Variable incoming, Declaration decl, Compilation comp) {
   CodeAttr code = comp.getCode();
   if (incoming != null) code.emitLoad(incoming);
   if (decl != null) {
     code.emitDup();
     decl.compileStore(comp);
   }
   comp.compileConstant(this);
   code.emitSwap();
   code.emitInvokeVirtual(isInstanceMethod);
   code.emitIfIntNotZero();
 }