1# Copyright (c) 2011 Advanced Micro Devices, Inc.
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright
9# notice, this list of conditions and the following disclaimer in the
10# documentation and/or other materials provided with the distribution;
11# neither the name of the copyright holders nor the names of its
12# contributors may be used to endorse or promote products derived from
13# this software without specific prior written permission.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27from slicc.ast.TypeFieldAST import TypeFieldAST
28from slicc.symbols import Event, State
29
30class TypeFieldStateAST(TypeFieldAST):
31    def __init__(self, slicc, field_id, perm_ast, pairs_ast):
32        super(TypeFieldStateAST, self).__init__(slicc, pairs_ast)
33
34        self.field_id = field_id
35        self.perm_ast = perm_ast
36        if not (perm_ast.type_ast.ident == "AccessPermission"):
37            self.error("AccessPermission enum value must be specified")
38        self.pairs_ast = pairs_ast
39
40    def __repr__(self):
41        return "[TypeFieldState: %r]" % self.field_id
42
43    def generate(self, type):
44        if not str(type) == "State":
45            self.error("State Declaration must be of type State.")
46
47        # Add enumeration
48        if not type.addEnum(self.field_id, self.pairs_ast.pairs):
49            self.error("Duplicate enumeration: %s:%s" % (type, self.field_id))
50
51        # Fill machine info
52        machine = self.symtab.state_machine
53
54        if not machine:
55            self.error("State declaration not part of a machine.")
56        s = State(self.symtab, self.field_id, self.location, self.pairs)
57        machine.addState(s)
58
59        type.statePermPairAdd(s, self.perm_ast.value)
60
61
62