Func.py revision 8478:435179113834 
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,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28from slicc.symbols.Symbol import Symbol
29from slicc.symbols.Type import Type
30
31class Func(Symbol):
32    def __init__(self, table, ident, location, return_type, param_types,
33                 param_strings, body, pairs, machine):
34        super(Func, self).__init__(table, ident, location, pairs)
35        self.return_type = return_type
36        self.param_types = param_types
37        self.param_strings = param_strings
38        self.body = body
39        self.isInternalMachineFunc = False
40        self.c_ident = ident
41
42        if machine is None or "external" in self or "primitive" in self:
43            pass
44        else:
45            self.machineStr = str(machine)
46            self.isInternalMachineFunc = True
47
48    def __repr__(self):
49        return ""
50
51    @property
52    def prototype(self):
53        if "external" in self:
54            return ""
55
56        return_type = self.return_type.c_ident
57        void_type = self.symtab.find("void", Type)
58        if "return_by_ref" in self and self.return_type != void_type:
59            return_type += "&"
60        elif "return_by_pointer" in self and self.return_type != void_type:
61            return_type += "*"
62
63        return "%s %s(%s);" % (return_type, self.c_ident,
64                               ", ".join(self.param_strings))
65
66    def writeCodeFiles(self, path):
67        return
68
69    def generateCode(self):
70        '''This write a function of object Chip'''
71        if "external" in self:
72            return ""
73
74        code = self.symtab.codeFormatter()
75
76        # Generate function header
77        void_type = self.symtab.find("void", Type)
78        return_type = self.return_type.c_ident
79        if "return_by_ref" in self and self.return_type != void_type:
80            return_type += "&"
81        if "return_by_pointer" in self and self.return_type != void_type:
82            return_type += "*"
83
84        if self.isInternalMachineFunc:
85            klass = "%s_Controller" % self.machineStr
86        else:
87            klass = "Chip"
88
89        params = ', '.join(self.param_strings)
90
91        code('''
92$return_type
93${klass}::${{self.c_ident}}($params)
94{
95${{self.body}}
96}
97''')
98        return str(code)
99
100__all__ = [ "Func" ]
101