Examples of com.google.gwt.dev.jjs.ast.JPrefixOperation

com.google.gwt.dev.jjs.ast.JPrefixOperation
Java prefix operation expression.

        JBinaryOperation binOp = new JBinaryOperation(sourceInfo, type,
            JBinaryOperator.OR, condExpr, elseExpr);
        return binOp;
      } else {
        // e.g. (cond ? false : else) -> !cond && else
        JPrefixOperation notCondExpr = new JPrefixOperation(
            condExpr.getSourceInfo(), JUnaryOperator.NOT, condExpr);
        JBinaryOperation binOp = new JBinaryOperation(sourceInfo, type,
            JBinaryOperator.AND, notCondExpr, elseExpr);
        return binOp;
      }
    } else if (elseExpr instanceof JBooleanLiteral) {
      if (((JBooleanLiteral) elseExpr).getValue()) {
        // e.g. (cond ? then : true) -> !cond || then
        JPrefixOperation notCondExpr = new JPrefixOperation(
            condExpr.getSourceInfo(), JUnaryOperator.NOT, condExpr);
        JBinaryOperation binOp = new JBinaryOperation(sourceInfo, type,
            JBinaryOperator.OR, notCondExpr, thenExpr);
        return binOp;
      } else {

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            argOp.getType(), newOp, argOp.getLhs(), argOp.getRhs());
        return newBinOp;
      }
    } else if (arg instanceof JPrefixOperation) {
      // try to invert the unary operator
      JPrefixOperation argOp = (JPrefixOperation) arg;
      JUnaryOperator op = argOp.getOp();
      // e.g. !!x -> x
      if (op == JUnaryOperator.NOT) {
        return argOp.getArg();
      }
    }


    // no simplification made
    if (original != null) {
      return original;
    }
    return new JPrefixOperation(arg.getSourceInfo(), JUnaryOperator.NOT, arg);
  }

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      return false;
    }


    private void simplifyXor(JExpression lhs, JBooleanLiteral rhs, Context ctx) {
      if (rhs.getValue()) {
        ctx.replaceMe(new JPrefixOperation(lhs.getSourceInfo(), JUnaryOperator.NOT,
            lhs));
      } else {
        ctx.replaceMe(lhs);
      }
    }

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    public void endVisit(JPostfixOperation x, Context ctx) {
      if (x.getOp().isModifying()) {
        lvalues.remove(x.getArg());
      }
      if (ignoringExpressionOutput.contains(x)) {
        JPrefixOperation newOp = new JPrefixOperation(x.getSourceInfo(),
            x.getOp(), x.getArg());
        ctx.replaceMe(newOp);
      }
    }

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     */
    private void simplifyBooleanEq(JExpression exp, boolean bool, Context ctx) {
      if (bool) {
        ctx.replaceMe(exp);
      } else {
        ctx.replaceMe(new JPrefixOperation(exp.getSourceInfo(), JUnaryOperator.NOT,
            exp));
      }
    }

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     * @return A simplified expression equivalent to <code>- exp</code>.
     */
    private JExpression simplifyNegate(JExpression original, JExpression exp) {
      // - -x -> x
      if (exp instanceof JPrefixOperation) {
        JPrefixOperation prefarg = (JPrefixOperation) exp;
        if (prefarg.getOp() == JUnaryOperator.NEG) {
          return prefarg.getArg();
        }
      }


      // no change
      if (original != null) {
        return original;
      }
      return new JPrefixOperation(exp.getSourceInfo(), JUnaryOperator.NEG,
          exp);
    }

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        default:
          throw new InternalCompilerException("Unexpected prefix operator");
      }


      JPrefixOperation preOp = new JPrefixOperation(info, op,
          dispProcessExpression(x.lhs));
      return preOp;
    }

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        default:
          throw new InternalCompilerException(
              "Unexpected operator for unary expression");
      }


      JPrefixOperation preOp = new JPrefixOperation(info, op,
          dispProcessExpression(x.expression));
      return preOp;
    }

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            createVariableRef(info, indexVar), createVariableRef(info, maxVar));


        // ++i$index
        List<JExpressionStatement> increments = new ArrayList<JExpressionStatement>(
            1);
        increments.add(new JPrefixOperation(info, JUnaryOperator.INC,
            createVariableRef(info, indexVar)).makeStatement());


        // T elementVar = i$array[i$index];
        elementDecl.initializer = new JArrayRef(info, createVariableRef(info,
            arrayVar), createVariableRef(info, indexVar));

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    public void endVisit(JPostfixOperation x, Context ctx) {
      if (x.getOp().isModifying()) {
        lvalues.remove(x.getArg());
      }
      if (ignoringExpressionOutput.contains(x)) {
        JPrefixOperation newOp = new JPrefixOperation(x.getSourceInfo(),
            x.getOp(), x.getArg());
        ctx.replaceMe(newOp);
      }
    }

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com.google.gwt.dev.jjs.impl.AssertionNormalizer$AssertNormalizeVisitor

com.google.gwt.dev.jjs.impl.CloneExpressionVisitor

com.google.gwt.dev.jjs.impl.DeadCodeElimination$DeadCodeVisitor

com.google.gwt.dev.jjs.impl.GenerateJavaAST$JavaASTGenerationVisitor

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