FormalParamAST.py revision 8644 
1# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
2# Copyright (c) 2009 The Hewlett-Packard Development Company
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28from slicc.ast.AST import AST
29from slicc.symbols import Var
30
31class FormalParamAST(AST):
32    def __init__(self, slicc, type_ast, ident, default = None, pointer = False):
33        super(FormalParamAST, self).__init__(slicc)
34        self.type_ast = type_ast
35        self.ident = ident
36        self.default = default
37        self.pointer = pointer
38
39    def __repr__(self):
40        return "[FormalParamAST: %s]" % self.ident
41
42    @property
43    def name(self):
44        return self.ident
45
46    def generate(self):
47        type = self.type_ast.type
48        param = "param_%s" % self.ident
49
50        # Add to symbol table
51        v = Var(self.symtab, self.ident, self.location, type, param,
52                self.pairs)
53        self.symtab.newSymbol(v)
54        if self.pointer or str(type) == "TBE" or (
55           "interface" in type and (
56               type["interface"] == "AbstractCacheEntry" or
57               type["interface"] == "AbstractEntry")):
58            return type, "%s* %s" % (type.c_ident, param)
59        else:
60            return type, "const %s& %s" % (type.c_ident, param)
61