/usr/include/antlr3intstream.h is in libantlr3c-dev 3.2-3.
This file is owned by root:root, with mode 0o644.
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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 | /** \file
* Defines the the class interface for an antlr3 INTSTREAM.
*
* Certain functionality (such as DFAs for instance) abstract the stream of tokens
* or characters in to a steam of integers. Hence this structure should be included
* in any stream that is able to provide the output as a stream of integers (which is anything
* basically.
*
* There are no specific implementations of the methods in this interface in general. Though
* for purposes of casting and so on, it may be necesssary to implement a function with
* the signature in this interface which abstracts the base immplementation. In essence though
* the base stream provides a pointer to this interface, within which it installs its
* normal match() functions and so on. Interaces such as DFA are then passed the pANTLR3_INT_STREAM
* and can treat any input as an int stream.
*
* For instance, a lexer implements a pANTLR3_BASE_RECOGNIZER, within which there is a pANTLR3_INT_STREAM.
* However, a pANTLR3_INPUT_STREAM also provides a pANTLR3_INT_STREAM, which it has constructed from
* it's normal interface when it was created. This is then pointed at by the pANTLR_BASE_RECOGNIZER
* when it is intialized with a pANTLR3_INPUT_STREAM.
*
* Similarly if a pANTLR3_BASE_RECOGNIZER is initialized with a pANTLR3_TOKEN_STREAM, then the
* pANTLR3_INT_STREAM is taken from the pANTLR3_TOKEN_STREAM.
*
* If a pANTLR3_BASE_RECOGNIZER is initialized with a pANTLR3_TREENODE_STREAM, then guess where
* the pANTLR3_INT_STREAM comes from?
*
* Note that because the context pointer points to the actual interface structure that is providing
* the ANTLR3_INT_STREAM it is defined as a (void *) in this interface. There is no direct implementation
* of an ANTLR3_INT_STREAM (unless someone did not understand what I was doing here =;?P
*/
#ifndef _ANTLR3_INTSTREAM_H
#define _ANTLR3_INTSTREAM_H
// [The "BSD licence"]
// Copyright (c) 2005-2009 Jim Idle, Temporal Wave LLC
// http://www.temporal-wave.com
// http://www.linkedin.com/in/jimidle
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. 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.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
#include <antlr3defs.h>
#include <antlr3commontoken.h>
/** Type indicator for a character stream
* \remark if a custom stream is created but it can be treated as
* a char stream, then you may OR in this value to your type indicator
*/
#define ANTLR3_CHARSTREAM 0x0001
/** Type indicator for a Token stream
* \remark if a custom stream is created but it can be treated as
* a token stream, then you may OR in this value to your type indicator
*/
#define ANTLR3_TOKENSTREAM 0x0002
/** Type indicator for a common tree node stream
* \remark if a custom stream is created but it can be treated as
* a common tree node stream, then you may OR in this value to your type indicator
*/
#define ANTLR3_COMMONTREENODE 0x0004
/** Type mask for input stream so we can switch in the above types
* \remark DO NOT USE 0x0000 as a stream type!
*/
#define ANTLR3_INPUT_MASK 0x0007
#ifdef __cplusplus
extern "C" {
#endif
typedef struct ANTLR3_INT_STREAM_struct
{
/** Input stream type indicator. Sometimes useful for error reporting etc.
*/
ANTLR3_UINT32 type;
/** Potentially useful in error reporting and so on, this string is
* an identification of the input source. It may be NULL, so anything
* attempting to access it needs to check this and substitute a sensible
* default.
*/
pANTLR3_STRING streamName;
/** Pointer to the super structure that contains this interface. This
* will usually be a token stream or a tree stream.
*/
void * super;
/** Last marker position allocated
*/
ANTLR3_MARKER lastMarker;
// Return a string that identifies the input source
//
pANTLR3_STRING (*getSourceName) (struct ANTLR3_INT_STREAM_struct * intStream);
/** Consume the next 'ANTR3_UINT32' in the stream
*/
void (*consume) (struct ANTLR3_INT_STREAM_struct * intStream);
/** Get ANTLR3_UINT32 at current input pointer + i ahead where i=1 is next ANTLR3_UINT32
*/
ANTLR3_UINT32 (*_LA) (struct ANTLR3_INT_STREAM_struct * intStream, ANTLR3_INT32 i);
/** Tell the stream to start buffering if it hasn't already. Return
* current input position, index(), or some other marker so that
* when passed to rewind() you get back to the same spot.
* rewind(mark()) should not affect the input cursor.
*/
ANTLR3_MARKER (*mark) (struct ANTLR3_INT_STREAM_struct * intStream);
/** Return the current input symbol index 0..n where n indicates the
* last symbol has been read.
*/
ANTLR3_MARKER (*index) (struct ANTLR3_INT_STREAM_struct * intStream);
/** Reset the stream so that next call to index would return marker.
* The marker will usually be index() but it doesn't have to be. It's
* just a marker to indicate what state the stream was in. This is
* essentially calling release() and seek(). If there are markers
* created after this marker argument, this routine must unroll them
* like a stack. Assume the state the stream was in when this marker
* was created.
*/
void (*rewind) (struct ANTLR3_INT_STREAM_struct * intStream, ANTLR3_MARKER marker);
/** Reset the stream to the last marker position, witouh destryoing the
* last marker position.
*/
void (*rewindLast) (struct ANTLR3_INT_STREAM_struct * intStream);
/** You may want to commit to a backtrack but don't want to force the
* stream to keep bookkeeping objects around for a marker that is
* no longer necessary. This will have the same behavior as
* rewind() except it releases resources without the backward seek.
*/
void (*release) (struct ANTLR3_INT_STREAM_struct * intStream, ANTLR3_MARKER mark);
/** Set the input cursor to the position indicated by index. This is
* normally used to seek ahead in the input stream. No buffering is
* required to do this unless you know your stream will use seek to
* move backwards such as when backtracking.
*
* This is different from rewind in its multi-directional
* requirement and in that its argument is strictly an input cursor (index).
*
* For char streams, seeking forward must update the stream state such
* as line number. For seeking backwards, you will be presumably
* backtracking using the mark/rewind mechanism that restores state and
* so this method does not need to update state when seeking backwards.
*
* Currently, this method is only used for efficient backtracking, but
* in the future it may be used for incremental parsing.
*/
void (*seek) (struct ANTLR3_INT_STREAM_struct * intStream, ANTLR3_MARKER index);
/** Only makes sense for streams that buffer everything up probably, but
* might be useful to display the entire stream or for testing.
*/
ANTLR3_UINT32 (*size) (struct ANTLR3_INT_STREAM_struct * intStream);
/** Because the indirect call, though small in individual cases can
* mount up if there are thousands of tokens (very large input streams), callers
* of size can optionally use this cached size field.
*/
ANTLR3_UINT32 cachedSize;
/** Frees any resources that were allocated for the implementation of this
* interface. Usually this is just releasing the memory allocated
* for the structure itself, but it may of course do anything it need to
* so long as it does not stamp on anything else.
*/
void (*free) (struct ANTLR3_INT_STREAM_struct * stream);
}
ANTLR3_INT_STREAM;
#ifdef __cplusplus
}
#endif
#endif
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