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A metacompilation framework for Java using attribute grammars.
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# Copyright (c) 2019, 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
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# POSSIBILITY OF SUCH DAMAGE.

# Incremental tracking for collection attributes.
# The survey phase is treated as if it was an attribute so that
# all collection attribute instances depend on the same survey.
# This makes sure that all collection attribute instances are properly flushed
# when some change flushes the survey result.
#
# NOTE(joqvist): this implementation currently only suuports incremental=param!

# Cache field for the survey attribute dependency handler.
CollDecl.incSurveyHandlerDecl = [[
$if(IncrementalEnabled)
  protected $DDGNodeName #(signature)_survey_handler;
$endif
]]

# Create the survey phase dependency handler.
CollDecl.incHookCollectionSurveyHandler = [[
$if(IncrementalEnabled)
if (#(signature)_survey_handler == null) {
  #(signature)_survey_handler = new $DDGNodeName(this, "#(signature)", null, $ASTNode.inc_EMPTY) {
    @Override public void reactToDependencyChange() {
$if(#onePhase)
      collect_contributors_#collectionId = false;
$endif
      if (contributorMap_#collectionId != null) {
        contributorMap_#collectionId = null;
        notifyDependencies();
      }
    }
  };
}
state().addHandlerDepTo(#(signature)_survey_handler);
$endif
]]

CollDecl.incHookCollectionSurveyStart = [[
$if(IncrementalEnabled)
state().enterAttrStoreEval(#(signature)_survey_handler);
$endif
]]

# Pop the survey handler off the stack after survey is finished.
CollDecl.incHookCollectionSurveyEnd = [[
$if(IncrementalEnabled)
state().exitAttrStoreEval(#(signature)_survey_handler);
$endif
]]