src/object_writer.h

changeset 86
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parent 85
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child 87
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equal deleted inserted replaced
85:264a61e9eba0 86:43fe4be38a58
1 /*
2 Copyright 2012-2014 Santeri Piippo
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
7 are met:
8
9 1. Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in the
13 documentation and/or other materials provided with the distribution.
14 3. The name of the author may not be used to endorse or promote products
15 derived from this software without specific prior written permission.
16
17 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef BOTC_OBJWRITER_H
30 #define BOTC_OBJWRITER_H
31
32 #include <stdio.h>
33 #include <typeinfo>
34 #include <string.h>
35 #include "main.h"
36 #include "str.h"
37 #include "data_buffer.h"
38
39 class object_writer
40 {
41 public:
42 // ====================================================================
43 // MEMBERS
44
45 // Pointer to the file we're writing to
46 FILE* fp;
47
48 // The main buffer - the contents of this is what we
49 // write to file after parsing is complete
50 data_buffer* MainBuffer;
51
52 // onenter buffer - the contents of the onenter{} block
53 // is buffered here and is merged further at the end of state
54 data_buffer* OnEnterBuffer;
55
56 // Mainloop buffer - the contents of the mainloop{} block
57 // is buffered here and is merged further at the end of state
58 data_buffer* MainLoopBuffer;
59
60 // Switch buffer - switch case data is recorded to this
61 // buffer initially, instead of into main buffer.
62 data_buffer* SwitchBuffer;
63
64 // How many bytes have we written to file?
65 int numWrittenBytes;
66
67 // How many references did we resolve in the main buffer?
68 int numWrittenReferences;
69
70 // ====================================================================
71 // METHODS
72 object_writer();
73 void write_string (string s);
74 void write_buffer (data_buffer* buf);
75 void write_member_buffers();
76 void write_string_table();
77 void write_to_file (string filepath);
78 data_buffer* get_current_buffer();
79
80 int add_mark (string name);
81 int find_byte_mark (string name);
82 int add_reference (int mark);
83 void move_mark (int mark);
84 void offset_mark (int mark, int offset);
85 void delete_mark (int mark);
86
87 template <class T> void write (T stuff)
88 {
89 get_current_buffer()->write (stuff);
90 }
91
92 private:
93 // Write given data to file.
94 template <class T> void write_data_to_file (T stuff)
95 {
96 // One byte at a time
97 generic_union<T> uni;
98 uni.as_t = stuff;
99
100 for (int x = 0; x < sizeof (T); x++)
101 {
102 fwrite (&uni.as_bytes[x], 1, 1, fp);
103 numWrittenBytes++;
104 }
105 }
106 };
107
108 #endif // BOTC_OBJWRITER_H

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