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A metacompilation framework for Java using attribute grammars.

There is a newer version: 2.3.6

# Copyright (c) 2013, The JastAdd Team
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the Lund University nor the names of its
#       contributors may be used to endorse or promote products derived from
#       this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

ASTDecl.emitIsEqualMethods = [[
$if(#isASTNodeDecl)
  /** @apilevel internal */
  protected boolean #name.is$$Equal($ASTNode n1, $ASTNode n2) {
    if (n1 == null && n2 == null) return true;
    if (n1 == null || n2 == null) return false;
    return n1.is$$Equal(n2);
  }
$endif
  /** @apilevel internal */
  protected boolean #name.is$$Equal($ASTNode node) {
$if(#isASTNodeDecl)
    if (getClass() != node.getClass()) {
      return false;
    }
    if (numChildren != node.numChildren) {
      return false;
    }
    for (int i = 0; i < numChildren; i++) {
      if (children[i] == null && node.children[i] != null) {
        return false;
      }
      if (!(($ASTNode)children[i]).is$$Equal((($ASTNode)node.children[i]))) {
        return false;
      }
    }
    return true;
$else
    return super.is$$Equal(node)$IsEqualBody;    
$endif
  }
]]