1# Copyright (c) 2013 Advanced Micro Devices, Inc.
2# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3# Copyright (c) 2009 The Hewlett-Packard Development Company
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met: redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer;
10# redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution;
13# neither the name of the copyright holders nor the names of its
14# contributors may be used to endorse or promote products derived from
15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29from slicc.ast.StatementAST import StatementAST
30from slicc.symbols import Var
31
32class PeekStatementAST(StatementAST):
33 def __init__(self, slicc, queue_name, type_ast, pairs, statements, method):
34 super(PeekStatementAST, self).__init__(slicc, pairs)
35
36 self.queue_name = queue_name
37 self.type_ast = type_ast
38 self.statements = statements
39 self.method = method
40
41 def __repr__(self):
42 return "[PeekStatementAST: %r queue_name: %r type: %r %r]" % \
43 (self.method, self.queue_name, self.type_ast, self.statements)
44
45 def generate(self, code, return_type):
46 self.symtab.pushFrame()
47
48 msg_type = self.type_ast.type
49
50 # Add new local var to symbol table
51 var = Var(self.symtab, "in_msg", self.location, msg_type, "(*in_msg_ptr)",
52 self.pairs)
53 self.symtab.newSymbol(var)
54
55 # Check the queue type
56 self.queue_name.assertType("InPort")
57
58 # Declare the new "in_msg_ptr" variable
59 mtid = msg_type.c_ident
60 qcode = self.queue_name.var.code
61 code('''
62{
63 // Declare message
64 const $mtid* in_msg_ptr M5_VAR_USED;
65 in_msg_ptr = dynamic_cast<const $mtid *>(($qcode).${{self.method}}());
66 if (in_msg_ptr == NULL) {
67 // If the cast fails, this is the wrong inport (wrong message type).
68 // Throw an exception, and the caller will decide to either try a
69 // different inport or punt.
70 throw RejectException();
71 }
72''')
73
| 1# Copyright (c) 2013 Advanced Micro Devices, Inc.
2# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3# Copyright (c) 2009 The Hewlett-Packard Development Company
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met: redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer;
10# redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution;
13# neither the name of the copyright holders nor the names of its
14# contributors may be used to endorse or promote products derived from
15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29from slicc.ast.StatementAST import StatementAST
30from slicc.symbols import Var
31
32class PeekStatementAST(StatementAST):
33 def __init__(self, slicc, queue_name, type_ast, pairs, statements, method):
34 super(PeekStatementAST, self).__init__(slicc, pairs)
35
36 self.queue_name = queue_name
37 self.type_ast = type_ast
38 self.statements = statements
39 self.method = method
40
41 def __repr__(self):
42 return "[PeekStatementAST: %r queue_name: %r type: %r %r]" % \
43 (self.method, self.queue_name, self.type_ast, self.statements)
44
45 def generate(self, code, return_type):
46 self.symtab.pushFrame()
47
48 msg_type = self.type_ast.type
49
50 # Add new local var to symbol table
51 var = Var(self.symtab, "in_msg", self.location, msg_type, "(*in_msg_ptr)",
52 self.pairs)
53 self.symtab.newSymbol(var)
54
55 # Check the queue type
56 self.queue_name.assertType("InPort")
57
58 # Declare the new "in_msg_ptr" variable
59 mtid = msg_type.c_ident
60 qcode = self.queue_name.var.code
61 code('''
62{
63 // Declare message
64 const $mtid* in_msg_ptr M5_VAR_USED;
65 in_msg_ptr = dynamic_cast<const $mtid *>(($qcode).${{self.method}}());
66 if (in_msg_ptr == NULL) {
67 // If the cast fails, this is the wrong inport (wrong message type).
68 // Throw an exception, and the caller will decide to either try a
69 // different inport or punt.
70 throw RejectException();
71 }
72''')
73
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