Mercurial > hg > truffle
annotate src/share/vm/adlc/filebuff.hpp @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | d336b3173277 |
| children |
| rev | line source |
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| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_ADLC_FILEBUFF_HPP |
| 26 #define SHARE_VM_ADLC_FILEBUFF_HPP | |
| 27 | |
| 0 | 28 // FILEBUFF.HPP - Definitions for parser file buffering routines |
| 229 | 29 #include <iostream> |
| 0 | 30 |
| 229 | 31 using namespace std; |
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32 |
| 0 | 33 // STRUCTURE FOR HANDLING INPUT AND OUTPUT FILES |
| 6850 | 34 |
| 35 class BufferedFile { | |
| 36 public: | |
| 0 | 37 const char *_name; |
| 38 FILE *_fp; | |
| 6850 | 39 inline BufferedFile() { _name = NULL; _fp = NULL; }; |
| 40 inline ~BufferedFile() {}; | |
| 41 }; | |
| 0 | 42 |
| 43 class ArchDesc; | |
| 44 | |
| 45 //------------------------------FileBuff-------------------------------------- | |
| 46 // This class defines a nicely behaved buffer of text. Entire file of text | |
| 605 | 47 // is read into buffer at creation, with sentinels at start and end. |
| 0 | 48 class FileBuff { |
| 49 friend class FileBuffRegion; | |
| 50 private: | |
| 51 long _bufferSize; // Size of text holding buffer. | |
| 52 long _offset; // Expected filepointer offset. | |
| 53 long _bufoff; // Start of buffer file offset | |
| 54 | |
| 55 char *_buf; // The buffer itself. | |
| 605 | 56 char *_bigbuf; // The buffer plus sentinels; actual heap area |
| 57 char *_bufmax; // A pointer to the buffer end sentinel | |
| 0 | 58 char *_bufeol; // A pointer to the last complete line end |
| 59 | |
| 60 int _err; // Error flag for file seek/read operations | |
| 61 long _filepos; // Current offset from start of file | |
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62 int _linenum; |
| 0 | 63 |
| 64 ArchDesc& _AD; // Reference to Architecture Description | |
| 65 | |
| 66 // Error reporting function | |
| 67 void file_error(int flag, int linenum, const char *fmt, ...); | |
| 68 | |
| 69 public: | |
| 70 const BufferedFile *_fp; // File to be buffered | |
| 71 | |
| 72 FileBuff(BufferedFile *fp, ArchDesc& archDesc); // Constructor | |
| 73 ~FileBuff(); // Destructor | |
| 74 | |
| 75 // This returns a pointer to the start of the current line in the buffer, | |
| 76 // and increments bufeol and filepos to point at the end of that line. | |
| 77 char *get_line(void); | |
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78 int linenum() const { return _linenum; } |
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79 void set_linenum(int line) { _linenum = line; } |
| 0 | 80 |
| 81 // This converts a pointer into the buffer to a file offset. It only works | |
| 82 // when the pointer is valid (i.e. just obtained from getline()). | |
| 769 | 83 long getoff(const char* s) { return _bufoff + (long)(s - _buf); } |
| 0 | 84 }; |
| 85 | |
| 86 //------------------------------FileBuffRegion--------------------------------- | |
| 87 // A buffer region is really a region of some file, specified as a linked list | |
| 88 // of offsets and lengths. These regions can be merged; overlapping regions | |
| 89 // will coalesce. | |
| 90 class FileBuffRegion { | |
| 91 public: // Workaround dev-studio friend/private bug | |
| 92 FileBuffRegion *_next; // Linked list of regions sorted by offset. | |
| 93 private: | |
| 94 FileBuff *_bfr; // The Buffer of the file | |
| 95 int _offset, _length; // The file area | |
| 96 int _sol; // Start of line where the file area starts | |
| 97 int _line; // First line of region | |
| 98 | |
| 99 public: | |
| 100 FileBuffRegion(FileBuff*, int sol, int line, int offset, int len); | |
| 101 ~FileBuffRegion(); | |
| 102 | |
| 103 FileBuffRegion *copy(); // Deep copy | |
| 104 FileBuffRegion *merge(FileBuffRegion*); // Merge 2 regions; delete input | |
| 105 | |
| 106 void print(ostream&); | |
| 107 friend ostream& operator<< (ostream&, FileBuffRegion&); | |
| 108 }; | |
| 1972 | 109 |
| 110 #endif // SHARE_VM_ADLC_FILEBUFF_HPP |