1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22 #include <precomp.h>
23 #include "c_rcode.hxx"
24
25
26 // NOT FULLY DECLARED SERVICES
27 #include <ary/cpp/c_gate.hxx>
28 #include <ary/cpp/c_namesp.hxx>
29 // #include <ary/cpp/c_groups.hxx>
30 #include <ary/loc/locp_le.hxx>
31 #include "cpp_pe.hxx"
32 #include <adc_cl.hxx>
33 #include <x_parse.hxx>
34 #include "pe_file.hxx"
35
36 const uintt C_nNO_TRY = uintt(-1);
37
38
39 namespace cpp {
40
41
CodeExplorer(ary::cpp::Gate & io_rAryGate)42 CodeExplorer::CodeExplorer( ary::cpp::Gate & io_rAryGate )
43 : aGlobalParseContext(io_rAryGate),
44 // aEnvironments,
45 pPE_File(0),
46 pGate(&io_rAryGate),
47 dpCurToken(0)
48 {
49 pPE_File = new PE_File( aGlobalParseContext );
50 }
51
~CodeExplorer()52 CodeExplorer::~CodeExplorer()
53 {
54 }
55
56 void
StartNewFile()57 CodeExplorer::StartNewFile()
58 {
59 csv::erase_container(aEnvironments);
60
61 aEnvironments.push_back( pPE_File.MutablePtr() );
62 pPE_File->Enter(push);
63 }
64
65 void
Process_Token(DYN cpp::Token & let_drToken)66 CodeExplorer::Process_Token( DYN cpp::Token & let_drToken )
67 {
68 if (DEBUG_ShowTokens())
69 {
70 Cout() << let_drToken.Text() << Endl();
71 }
72 dpCurToken = &let_drToken;
73 aGlobalParseContext.ResetResult();
74
75 do {
76 CurToken().Trigger( CurEnv() );
77 AcknowledgeResult();
78 } while ( dpCurToken );
79 }
80
81 void
AcknowledgeResult()82 CodeExplorer::AcknowledgeResult()
83 {
84 if (CurResult().eDone == done)
85 dpCurToken = 0;
86
87 switch ( CurResult().eStackAction )
88 {
89 case stay:
90 break;
91 case push:
92 CurEnv().Leave(push);
93 aEnvironments.push_back( &PushEnv() );
94 PushEnv().Enter(push);
95 break;
96 case pop_success:
97 CurEnv().Leave(pop_success);
98 aEnvironments.pop_back();
99 CurEnv().Enter(pop_success);
100 break;
101 case pop_failure:
102 {
103 Cpp_PE * pRecover = 0;
104 do {
105 CurEnv().Leave(pop_failure);
106 aEnvironments.pop_back();
107 if ( aEnvironments.empty() )
108 break;
109 pRecover = CurEnv().Handle_ChildFailure();
110 } while ( pRecover == 0 );
111 if ( pRecover != 0 )
112 {
113 aEnvironments.push_back(pRecover);
114 pRecover->Enter(push);
115 }
116 else
117 {
118 throw X_Parser( X_Parser::x_UnexpectedToken, CurToken().Text(), aGlobalParseContext.CurFileName(), aGlobalParseContext.LineCount() );
119 }
120 } break;
121 default:
122 csv_assert(false);
123 } // end switch(CurResult().eStackAction)
124 }
125
126 const Token &
CurToken() const127 CodeExplorer::CurToken() const
128 {
129 csv_assert(dpCurToken);
130
131 return *dpCurToken;
132 }
133
134 Cpp_PE &
CurEnv() const135 CodeExplorer::CurEnv() const
136 {
137 csv_assert(aEnvironments.size() > 0);
138 csv_assert(aEnvironments.back() != 0);
139
140 return *aEnvironments.back();
141 }
142
143 Cpp_PE &
PushEnv() const144 CodeExplorer::PushEnv() const
145 {
146 TokenProcessing_Result & rCurResult = const_cast< TokenProcessing_Result& >(aGlobalParseContext.CurResult());
147 Cpp_PE * ret = dynamic_cast< Cpp_PE* >(rCurResult.pEnv2Push);
148 csv_assert( ret != 0 );
149 return *ret;
150 }
151
152
153
154 } // namespace cpp
155
156