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

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

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


        JExpression lhs = pop(x.lhs);
        push(new JPrefixOperation(info, op, lhs));
      } catch (Throwable e) {
        throw translateException(x, e);
      }
    }

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


        JExpression expression = pop(x.expression);
        push(new JPrefixOperation(info, op, expression));
      } catch (Throwable e) {
        throw translateException(x, e);
      }
    }

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        call.addArg(x.getArg());
      }
      then.addStmt(new JThrowStatement(x.getSourceInfo(), call));


      JUnaryOperation notX =
          new JPrefixOperation(x.getSourceInfo(), JUnaryOperator.NOT, x.getTestExpr());
      JIfStatement cond =
          new JIfStatement(x.getSourceInfo(), notX, then, null);
      ctx.replaceMe(cond);
    }

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            new JBinaryOperation(info, 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();
      }
    } else if (arg instanceof JBooleanLiteral) {
      JBooleanLiteral booleanLit = (JBooleanLiteral) arg;
      return JBooleanLiteral.get(!booleanLit.getValue());
    }


    // no simplification made
    if (original != null) {
      return original;
    }
    return new JPrefixOperation(info, 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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        ctx.replaceMe(result);
        return;
      }


      if (ignoringExpressionOutput.contains(x)) {
        JPrefixOperation newOp = new JPrefixOperation(x.getSourceInfo(), x.getOp(), x.getArg());
        ctx.replaceMe(newOp);
      }
    }

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      // If the argument is a multiexpression restructure it if possible.
      if (isNonEmptyMultiExpression(x.getArg())) {
        List<JExpression> expressions = ((JMultiExpression) x.getArg()).getExpressions();
        JMultiExpression result = new JMultiExpression(x.getArg().getSourceInfo(),
            expressions.subList(0, expressions.size() - 1));
        result.addExpressions(new JPrefixOperation(x.getSourceInfo(), x.getOp(),
            expressions.get(expressions.size() - 1)));
        ctx.replaceMe(result);
        return;
      }

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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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    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

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

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