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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/********************* */
/*! \file input.h
** \verbatim
** Original author: cconway
** Major contributors: mdeters
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief Base for parser inputs.
**
** Base for parser inputs.
**/
#include "cvc4parser_public.h"
#ifndef __CVC4__PARSER__INPUT_H
#define __CVC4__PARSER__INPUT_H
#include <iostream>
#include <string>
#include <stdio.h>
#include <vector>
#include "expr/expr.h"
#include "expr/expr_manager.h"
#include "parser/parser_exception.h"
#include "util/Assert.h"
#include "util/language.h"
namespace CVC4 {
class Command;
class Type;
class FunctionType;
namespace parser {
class CVC4_PUBLIC InputStreamException : public Exception {
public:
InputStreamException(const std::string& msg);
virtual ~InputStreamException() throw() { }
};
/** Wrapper around an input stream. */
class InputStream {
/** The name of this input stream. */
std::string d_name;
/** Indicates whether the input file is a temporary that we should
* delete on exit. */
bool d_fileIsTemporary;
protected:
/** Initialize the input stream with a name. */
InputStream(std::string name, bool isTemporary=false) :
d_name(name),
d_fileIsTemporary(isTemporary) {
}
public:
/** Destructor. */
virtual ~InputStream() {
if( d_fileIsTemporary ) {
remove(d_name.c_str());
}
}
/** Get the name of this input stream. */
const std::string getName() const;
};
class Parser;
/**
* An input to be parsed. The static factory methods in this class (e.g.,
* <code>newFileInput</code>, <code>newStringInput</code>) create a parser
* for the given input language and attach it to an input source of the
* appropriate type.
*/
class CVC4_PUBLIC Input {
friend class Parser; // for parseError, parseCommand, parseExpr
friend class ParserBuilder;
/** The input stream. */
InputStream *d_inputStream;
/* Since we own d_inputStream and it needs to be freed, we need to prevent
* copy construction and assignment. Mark them private and do not define
* them.
*/
Input(const Input& input) CVC4_UNUSED;
Input& operator=(const Input& input) CVC4_UNUSED;
public:
/** Create an input for the given file.
*
* @param lang the input language
* @param filename the input filename
* @param useMmap true if the parser should use memory-mapped I/O (default: false)
*/
static Input* newFileInput(InputLanguage lang,
const std::string& filename,
bool useMmap = false)
throw (InputStreamException, AssertionException);
/** Create an input for the given stream.
*
* @param lang the input language
* @param input the input stream
* @param name the name of the stream, for use in error messages
* @param lineBuffered whether this Input should be line-buffered
* (false, the default, means that the entire Input might be read
* before being lexed and parsed)
*/
static Input* newStreamInput(InputLanguage lang,
std::istream& input,
const std::string& name,
bool lineBuffered = false)
throw (InputStreamException, AssertionException);
/** Create an input for the given string
*
* @param lang the input language
* @param input the input string
* @param name the name of the stream, for use in error messages
*/
static Input* newStringInput(InputLanguage lang,
const std::string& input,
const std::string& name)
throw (InputStreamException, AssertionException);
/** Destructor. Frees the input stream and closes the input. */
virtual ~Input();
/** Retrieve the remaining text in this input. */
virtual std::string getUnparsedText() = 0;
/** Get the language that this Input is reading. */
virtual InputLanguage getLanguage() const throw() = 0;
/** Retrieve the name of the input stream */
const std::string getInputStreamName(){
return getInputStream()->getName();
}
protected:
/** Create an input.
*
* @param inputStream the input stream
*/
Input(InputStream& inputStream);
/** Retrieve the input stream for this parser. */
InputStream *getInputStream();
/** Parse a command from the input by invoking the
* implementation-specific parsing method. Returns
* <code>NULL</code> if there is no command there to parse.
*
* @throws ParserException if an error is encountered during parsing.
*/
virtual Command* parseCommand()
throw (ParserException, TypeCheckingException, AssertionException) = 0;
/**
* Issue a warning to the user, with source file, line, and column info.
*/
virtual void warning(const std::string& msg) = 0;
/**
* Throws a <code>ParserException</code> with the given message.
*/
virtual void parseError(const std::string& msg)
throw (ParserException, AssertionException) = 0;
/** Parse an expression from the input by invoking the
* implementation-specific parsing method. Returns a null
* <code>Expr</code> if there is no expression there to parse.
*
* @throws ParserException if an error is encountered during parsing.
*/
virtual Expr parseExpr()
throw (ParserException, TypeCheckingException, AssertionException) = 0;
/** Set the Parser object for this input. */
virtual void setParser(Parser& parser) = 0;
};/* class Input */
}/* CVC4::parser namespace */
}/* CVC4 namespace */
#endif /* __CVC4__PARSER__ANTLR_INPUT_H */
|
