1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* InPortDeclAST.C
*
* Description: See InPortDeclAST.hh
*
* $Id$
*
*/
#include "mem/slicc/ast/InPortDeclAST.hh"
#include "mem/slicc/symbols/SymbolTable.hh"
#include "mem/slicc/symbols/Var.hh"
InPortDeclAST::InPortDeclAST(string* ident_ptr,
TypeAST* msg_type_ptr,
ExprAST* var_expr_ptr,
PairListAST* pairs_ptr,
StatementListAST* statement_list_ptr)
: DeclAST(pairs_ptr)
{
m_ident_ptr = ident_ptr;
m_msg_type_ptr = msg_type_ptr;
m_var_expr_ptr = var_expr_ptr;
m_statement_list_ptr = statement_list_ptr;
m_queue_type_ptr = new TypeAST(new string("InPort"));
}
InPortDeclAST::~InPortDeclAST()
{
delete m_ident_ptr;
delete m_msg_type_ptr;
delete m_var_expr_ptr;
delete m_statement_list_ptr;
delete m_queue_type_ptr;
}
void InPortDeclAST::generate()
{
string code;
Type* queue_type_ptr = m_var_expr_ptr->generate(code);
if (!queue_type_ptr->isInPort()) {
error("Inport queues must be of a type that has the 'inport' attribute. The type '" +
queue_type_ptr->toString() + "' does not have this attribute.");
}
Type* type_ptr = m_queue_type_ptr->lookupType();
Var* in_port_ptr = new Var(*m_ident_ptr, getLocation(), type_ptr, code, getPairs());
g_sym_table.newSym(in_port_ptr);
g_sym_table.pushFrame();
Vector<Type*> param_type_vec;
// Check for Event
type_ptr = g_sym_table.getType("Event");
if (type_ptr == NULL) {
error("in_port declarations require 'Event' enumeration to be defined");
}
param_type_vec.insertAtBottom(type_ptr);
// Check for Address
type_ptr = g_sym_table.getType("Address");
if (type_ptr == NULL) {
error("in_port declarations require 'Address' type to be defined");
}
param_type_vec.insertAtBottom(type_ptr);
// Add the trigger method - FIXME, this is a bit dirty
Map<string, string> pairs;
pairs.add("external", "yes");
Vector<string> string_vec;
g_sym_table.newSym(new Func("trigger", getLocation(), g_sym_table.getType("void"), param_type_vec, string_vec, string(""), pairs, NULL));
// Check for Event2
type_ptr = g_sym_table.getType("Event");
if (type_ptr == NULL) {
error("in_port declarations require 'Event' enumeration to be defined");
}
param_type_vec.insertAtBottom(type_ptr);
// Check for Address2
type_ptr = g_sym_table.getType("Address");
if (type_ptr == NULL) {
error("in_port declarations require 'Address' type to be defined");
}
param_type_vec.insertAtBottom(type_ptr);
// Add the doubleTrigger method - this hack supports tiggering two simulateous events
// The key is that the second transistion cannot fail because the first event cannot be undone
// therefore you must do some checks before calling double trigger to ensure that won't happen
g_sym_table.newSym(new Func("doubleTrigger", getLocation(), g_sym_table.getType("void"), param_type_vec, string_vec, string(""), pairs, NULL));
// Add the continueProcessing method - this hack supports messages that don't trigger events
Vector<Type*> empty_param_type_vec;
Vector<string> empty_string_vec;
g_sym_table.newSym(new Func("continueProcessing", getLocation(), g_sym_table.getType("void"), empty_param_type_vec, empty_string_vec, string(""), pairs, NULL));
if (m_statement_list_ptr != NULL) {
inc_indent();
inc_indent();
string code;
m_statement_list_ptr->generate(code, NULL);
in_port_ptr->addPair("c_code_in_port", code);
dec_indent();
dec_indent();
}
g_sym_table.popFrame();
// Add port to state machine
StateMachine* machine_ptr = g_sym_table.getStateMachine();
if (machine_ptr == NULL) {
error("InPort declaration not part of a machine.");
}
machine_ptr->addInPort(in_port_ptr);
}
void InPortDeclAST::print(ostream& out) const
{
out << "[InPortDecl: " << *m_ident_ptr << "]";
}
|
