#
# find top used generic types
# Section 5.2.1, Figure 8
#
# author: Robert Dyer <rdyer@iastate.edu>
#
# Copyright 2013-2014 Iowa State University. All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 
# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
# 2. 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.
# 
# THIS SOFTWARE IS PROVIDED BY IOWA STATE UNIVERSITY ``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 IOWA STATE UNIVERSITY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# of the authors and should not be interpreted as representing official policies,
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#
p:Project = input;
RawTypes: output top(10) of string weight int;
ParamTypes: output top(10) of string weight int;

types: map[string] of int;

visit(p, visitor {
    before repo: CodeRepository -> {
        snapshot := getsnapshot(repo, "SOURCE_JAVA_JLS");
        foreach (i: int; def(snapshot[i]))
            visit(snapshot[i]);
        stop;
    }
    before ast: ASTRoot -> collect_generic_types(ast, types);
});

keyset := keys(types);
foreach (pos: int; def(keyset[pos])) {
    key := keyset[pos];
    if (strfind("<", key) == -1)
        RawTypes << key weight types[key];
    else
        ParamTypes << key weight types[key];
}