ccode/valaccodeassignment.vala

   1 /* valaccodeassignment.vala
   2  *
   3  * Copyright (C) 2006-2008  Jürg Billeter
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  18  *
  19  * Author:
  20  *      Jürg Billeter <j@bitron.ch>
  21  */
  22
  23 using GLib;
  24
  25 /**
  26  * Represents an assignment expression in the C code.
  27  */
  28 public class Vala.CCodeAssignment : CCodeExpression {
  29         /**
  30          * Left hand side of the assignment.
  31          */
  32         public CCodeExpression left { get; set; }
  33
  34         /**
  35          * Assignment operator.
  36          */
  37         public CCodeAssignmentOperator operator { get; set; }
  38
  39         /**
  40          * Right hand side of the assignment.
  41          */
  42         public CCodeExpression right { get; set; }
  43
  44         public CCodeAssignment (CCodeExpression l, CCodeExpression r, CCodeAssignmentOperator op = CCodeAssignmentOperator.SIMPLE) {
  45                 left = l;
  46                 operator = op;
  47                 right = r;
  48         }
  49
  50         public override void write (CCodeWriter writer) {
  51                 left.write (writer);
  52
  53                 writer.write_string (" ");
  54
  55                 if (operator == CCodeAssignmentOperator.BITWISE_OR) {
  56                         writer.write_string ("|");
  57                 } else if (operator == CCodeAssignmentOperator.BITWISE_AND) {
  58                         writer.write_string ("&");
  59                 } else if (operator == CCodeAssignmentOperator.BITWISE_XOR) {
  60                         writer.write_string ("^");
  61                 } else if (operator == CCodeAssignmentOperator.ADD) {
  62                         writer.write_string ("+");
  63                 } else if (operator == CCodeAssignmentOperator.SUB) {
  64                         writer.write_string ("-");
  65                 } else if (operator == CCodeAssignmentOperator.MUL) {
  66                         writer.write_string ("*");
  67                 } else if (operator == CCodeAssignmentOperator.DIV) {
  68                         writer.write_string ("/");
  69                 } else if (operator == CCodeAssignmentOperator.PERCENT) {
  70                         writer.write_string ("%");
  71                 } else if (operator == CCodeAssignmentOperator.SHIFT_LEFT) {
  72                         writer.write_string ("<<");
  73                 } else if (operator == CCodeAssignmentOperator.SHIFT_RIGHT) {
  74                         writer.write_string (">>");
  75                 }
  76
  77                 writer.write_string ("= ");
  78
  79                 right.write (writer);
  80         }
  81
  82         public override void write_inner (CCodeWriter writer) {
  83                 writer.write_string ("(");
  84                 this.write (writer);
  85                 writer.write_string (")");
  86         }
  87 }
  88
  89 public enum Vala.CCodeAssignmentOperator {
  90         SIMPLE,
  91         BITWISE_OR,
  92         BITWISE_AND,
  93         BITWISE_XOR,
  94         ADD,
  95         SUB,
  96         MUL,
  97         DIV,
  98         PERCENT,
  99         SHIFT_LEFT,
 100         SHIFT_RIGHT
 101 }