Example #1
0
  public void atVariable(Variable v) throws CompileError {
    Declarator d = v.getDeclarator();
    exprType = d.getType();
    arrayDim = d.getArrayDim();
    className = d.getClassName();
    int var = getLocalVar(d);

    if (arrayDim > 0) bytecode.addAload(var);
    else
      switch (exprType) {
        case CLASS:
          bytecode.addAload(var);
          break;
        case LONG:
          bytecode.addLload(var);
          break;
        case FLOAT:
          bytecode.addFload(var);
          break;
        case DOUBLE:
          bytecode.addDload(var);
          break;
        default: // BOOLEAN, BYTE, CHAR, SHORT, INT
          bytecode.addIload(var);
          break;
      }
  }
Example #2
0
  private void atPlusPlus(int token, ASTree oprand, Expr expr, boolean doDup) throws CompileError {
    boolean isPost = oprand == null; // ++i or i++?
    if (isPost) oprand = expr.oprand2();

    if (oprand instanceof Variable) {
      Declarator d = ((Variable) oprand).getDeclarator();
      int t = exprType = d.getType();
      arrayDim = d.getArrayDim();
      int var = getLocalVar(d);
      if (arrayDim > 0) badType(expr);

      if (t == DOUBLE) {
        bytecode.addDload(var);
        if (doDup && isPost) bytecode.addOpcode(DUP2);

        bytecode.addDconst(1.0);
        bytecode.addOpcode(token == PLUSPLUS ? DADD : DSUB);
        if (doDup && !isPost) bytecode.addOpcode(DUP2);

        bytecode.addDstore(var);
      } else if (t == LONG) {
        bytecode.addLload(var);
        if (doDup && isPost) bytecode.addOpcode(DUP2);

        bytecode.addLconst((long) 1);
        bytecode.addOpcode(token == PLUSPLUS ? LADD : LSUB);
        if (doDup && !isPost) bytecode.addOpcode(DUP2);

        bytecode.addLstore(var);
      } else if (t == FLOAT) {
        bytecode.addFload(var);
        if (doDup && isPost) bytecode.addOpcode(DUP);

        bytecode.addFconst(1.0f);
        bytecode.addOpcode(token == PLUSPLUS ? FADD : FSUB);
        if (doDup && !isPost) bytecode.addOpcode(DUP);

        bytecode.addFstore(var);
      } else if (t == BYTE || t == CHAR || t == SHORT || t == INT) {
        if (doDup && isPost) bytecode.addIload(var);

        int delta = token == PLUSPLUS ? 1 : -1;
        if (var > 0xff) {
          bytecode.addOpcode(WIDE);
          bytecode.addOpcode(IINC);
          bytecode.addIndex(var);
          bytecode.addIndex(delta);
        } else {
          bytecode.addOpcode(IINC);
          bytecode.add(var);
          bytecode.add(delta);
        }

        if (doDup && !isPost) bytecode.addIload(var);
      } else badType(expr);
    } else {
      if (oprand instanceof Expr) {
        Expr e = (Expr) oprand;
        if (e.getOperator() == ARRAY) {
          atArrayPlusPlus(token, isPost, e, doDup);
          return;
        }
      }

      atFieldPlusPlus(token, isPost, oprand, expr, doDup);
    }
  }