ccode/valaccodebinaryexpression.vala

   1 /* valaccodebinaryexpression.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 expression with two operands in C code.
  27  */
  28 public class Vala.CCodeBinaryExpression : CCodeExpression {
  29         /**
  30          * The binary operator.
  31          */
  32         public CCodeBinaryOperator operator { get; set; }
  33
  34         /**
  35          * The left operand.
  36          */
  37         public CCodeExpression left { get; set; }
  38
  39         /**
  40          * The right operand.
  41          */
  42         public CCodeExpression right { get; set; }
  43
  44         public CCodeBinaryExpression (CCodeBinaryOperator op, CCodeExpression l, CCodeExpression r) {
  45                 operator = op;
  46                 left = l;
  47                 right = r;
  48         }
  49
  50         public override void write (CCodeWriter writer) {
  51                 left.write_inner (writer);
  52
  53                 writer.write_string (" ");
  54                 if (operator == CCodeBinaryOperator.PLUS) {
  55                         writer.write_string ("+");
  56                 } else if (operator == CCodeBinaryOperator.MINUS) {
  57                         writer.write_string ("-");
  58                 } else if (operator == CCodeBinaryOperator.MUL) {
  59                         writer.write_string ("*");
  60                 } else if (operator == CCodeBinaryOperator.DIV) {
  61                         writer.write_string ("/");
  62                 } else if (operator == CCodeBinaryOperator.MOD) {
  63                         writer.write_string ("%");
  64                 } else if (operator == CCodeBinaryOperator.SHIFT_LEFT) {
  65                         writer.write_string ("<<");
  66                 } else if (operator == CCodeBinaryOperator.SHIFT_RIGHT) {
  67                         writer.write_string (">>");
  68                 } else if (operator == CCodeBinaryOperator.LESS_THAN) {
  69                         writer.write_string ("<");
  70                 } else if (operator == CCodeBinaryOperator.GREATER_THAN) {
  71                         writer.write_string (">");
  72                 } else if (operator == CCodeBinaryOperator.LESS_THAN_OR_EQUAL) {
  73                         writer.write_string ("<=");
  74                 } else if (operator == CCodeBinaryOperator.GREATER_THAN_OR_EQUAL) {
  75                         writer.write_string (">=");
  76                 } else if (operator == CCodeBinaryOperator.EQUALITY) {
  77                         writer.write_string ("==");
  78                 } else if (operator == CCodeBinaryOperator.INEQUALITY) {
  79                         writer.write_string ("!=");
  80                 } else if (operator == CCodeBinaryOperator.BITWISE_AND) {
  81                         writer.write_string ("&");
  82                 } else if (operator == CCodeBinaryOperator.BITWISE_OR) {
  83                         writer.write_string ("|");
  84                 } else if (operator == CCodeBinaryOperator.BITWISE_XOR) {
  85                         writer.write_string ("^");
  86                 } else if (operator == CCodeBinaryOperator.AND) {
  87                         writer.write_string ("&&");
  88                 } else if (operator == CCodeBinaryOperator.OR) {
  89                         writer.write_string ("||");
  90                 }
  91
  92                 writer.write_string (" ");
  93
  94                 right.write_inner (writer);
  95         }
  96
  97         public override void write_inner (CCodeWriter writer) {
  98                 writer.write_string ("(");
  99                 this.write (writer);
 100                 writer.write_string (")");
 101         }
 102 }
 103
 104 public enum Vala.CCodeBinaryOperator {
 105         PLUS,
 106         MINUS,
 107         MUL,
 108         DIV,
 109         MOD,
 110         SHIFT_LEFT,
 111         SHIFT_RIGHT,
 112         LESS_THAN,
 113         GREATER_THAN,
 114         LESS_THAN_OR_EQUAL,
 115         GREATER_THAN_OR_EQUAL,
 116         EQUALITY,
 117         INEQUALITY,
 118         BITWISE_AND,
 119         BITWISE_OR,
 120         BITWISE_XOR,
 121         AND,
 122         OR
 123 }