aboutsummaryrefslogtreecommitdiffstats
path: root/code/botlib/l_script.h
blob: ceb0469cfdbbe03571642861df69060cc59c112a (plain)
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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

/*****************************************************************************
 * name:		l_script.h
 *
 * desc:		lexicographical parser
 *
 * $Archive: /source/code/botlib/l_script.h $
 *
 *****************************************************************************/

//undef if binary numbers of the form 0b... or 0B... are not allowed
#define BINARYNUMBERS
//undef if not using the token.intvalue and token.floatvalue
#define NUMBERVALUE
//use dollar sign also as punctuation
#define DOLLAR

//maximum token length
#define MAX_TOKEN					1024

#if defined(BSPC) && !defined(QDECL)
#define QDECL
#endif


//script flags
#define SCFL_NOERRORS				0x0001
#define SCFL_NOWARNINGS				0x0002
#define SCFL_NOSTRINGWHITESPACES	0x0004
#define SCFL_NOSTRINGESCAPECHARS	0x0008
#define SCFL_PRIMITIVE				0x0010
#define SCFL_NOBINARYNUMBERS		0x0020
#define SCFL_NONUMBERVALUES		0x0040

//token types
#define TT_STRING						1			// string
#define TT_LITERAL					2			// literal
#define TT_NUMBER						3			// number
#define TT_NAME						4			// name
#define TT_PUNCTUATION				5			// punctuation

//string sub type
//---------------
//		the length of the string
//literal sub type
//----------------
//		the ASCII code of the literal
//number sub type
//---------------
#define TT_DECIMAL					0x0008	// decimal number
#define TT_HEX							0x0100	// hexadecimal number
#define TT_OCTAL						0x0200	// octal number
#ifdef BINARYNUMBERS
#define TT_BINARY						0x0400	// binary number
#endif //BINARYNUMBERS
#define TT_FLOAT						0x0800	// floating point number
#define TT_INTEGER					0x1000	// integer number
#define TT_LONG						0x2000	// long number
#define TT_UNSIGNED					0x4000	// unsigned number
//punctuation sub type
//--------------------
#define P_RSHIFT_ASSIGN				1
#define P_LSHIFT_ASSIGN				2
#define P_PARMS						3
#define P_PRECOMPMERGE				4

#define P_LOGIC_AND					5
#define P_LOGIC_OR					6
#define P_LOGIC_GEQ					7
#define P_LOGIC_LEQ					8
#define P_LOGIC_EQ					9
#define P_LOGIC_UNEQ					10

#define P_MUL_ASSIGN					11
#define P_DIV_ASSIGN					12
#define P_MOD_ASSIGN					13
#define P_ADD_ASSIGN					14
#define P_SUB_ASSIGN					15
#define P_INC							16
#define P_DEC							17

#define P_BIN_AND_ASSIGN			18
#define P_BIN_OR_ASSIGN				19
#define P_BIN_XOR_ASSIGN			20
#define P_RSHIFT						21
#define P_LSHIFT						22

#define P_POINTERREF					23
#define P_CPP1							24
#define P_CPP2							25
#define P_MUL							26
#define P_DIV							27
#define P_MOD							28
#define P_ADD							29
#define P_SUB							30
#define P_ASSIGN						31

#define P_BIN_AND						32
#define P_BIN_OR						33
#define P_BIN_XOR						34
#define P_BIN_NOT						35

#define P_LOGIC_NOT					36
#define P_LOGIC_GREATER				37
#define P_LOGIC_LESS					38

#define P_REF							39
#define P_COMMA						40
#define P_SEMICOLON					41
#define P_COLON						42
#define P_QUESTIONMARK				43

#define P_PARENTHESESOPEN			44
#define P_PARENTHESESCLOSE			45
#define P_BRACEOPEN					46
#define P_BRACECLOSE					47
#define P_SQBRACKETOPEN				48
#define P_SQBRACKETCLOSE			49
#define P_BACKSLASH					50

#define P_PRECOMP						51
#define P_DOLLAR						52
//name sub type
//-------------
//		the length of the name

//punctuation
typedef struct punctuation_s
{
	char *p;						//punctuation character(s)
	int n;							//punctuation indication
	struct punctuation_s *next;		//next punctuation
} punctuation_t;

//token
typedef struct token_s
{
	char string[MAX_TOKEN];			//available token
	int type;						//last read token type
	int subtype;					//last read token sub type
#ifdef NUMBERVALUE
	unsigned long int intvalue;	//integer value
	float floatvalue;			//floating point value
#endif //NUMBERVALUE
	char *whitespace_p;				//start of white space before token
	char *endwhitespace_p;			//start of white space before token
	int line;						//line the token was on
	int linescrossed;				//lines crossed in white space
	struct token_s *next;			//next token in chain
} token_t;

//script file
typedef struct script_s
{
	char filename[1024];			//file name of the script
	char *buffer;					//buffer containing the script
	char *script_p;					//current pointer in the script
	char *end_p;					//pointer to the end of the script
	char *lastscript_p;				//script pointer before reading token
	char *whitespace_p;				//begin of the white space
	char *endwhitespace_p;			//end of the white space
	int length;						//length of the script in bytes
	int line;						//current line in script
	int lastline;					//line before reading token
	int tokenavailable;				//set by UnreadLastToken
	int flags;						//several script flags
	punctuation_t *punctuations;	//the punctuations used in the script
	punctuation_t **punctuationtable;
	token_t token;					//available token
	struct script_s *next;			//next script in a chain
} script_t;

//read a token from the script
int PS_ReadToken(script_t *script, token_t *token);
//expect a certain token
int PS_ExpectTokenString(script_t *script, char *string);
//expect a certain token type
int PS_ExpectTokenType(script_t *script, int type, int subtype, token_t *token);
//expect a token
int PS_ExpectAnyToken(script_t *script, token_t *token);
//returns true when the token is available
int PS_CheckTokenString(script_t *script, char *string);
//returns true an reads the token when a token with the given type is available
int PS_CheckTokenType(script_t *script, int type, int subtype, token_t *token);
//skip tokens until the given token string is read
int PS_SkipUntilString(script_t *script, char *string);
//unread the last token read from the script
void PS_UnreadLastToken(script_t *script);
//unread the given token
void PS_UnreadToken(script_t *script, token_t *token);
//returns the next character of the read white space, returns NULL if none
char PS_NextWhiteSpaceChar(script_t *script);
//remove any leading and trailing double quotes from the token
void StripDoubleQuotes(char *string);
//remove any leading and trailing single quotes from the token
void StripSingleQuotes(char *string);
//read a possible signed integer
signed long int ReadSignedInt(script_t *script);
//read a possible signed floating point number
float ReadSignedFloat(script_t *script);
//set an array with punctuations, NULL restores default C/C++ set
void SetScriptPunctuations(script_t *script, punctuation_t *p);
//set script flags
void SetScriptFlags(script_t *script, int flags);
//get script flags
int GetScriptFlags(script_t *script);
//reset a script
void ResetScript(script_t *script);
//returns true if at the end of the script
int EndOfScript(script_t *script);
//returns a pointer to the punctuation with the given number
char *PunctuationFromNum(script_t *script, int num);
//load a script from the given file at the given offset with the given length
script_t *LoadScriptFile(const char *filename);
//load a script from the given memory with the given length
script_t *LoadScriptMemory(char *ptr, int length, char *name);
//free a script
void FreeScript(script_t *script);
//set the base folder to load files from
void PS_SetBaseFolder(char *path);
//print a script error with filename and line number
void QDECL ScriptError(script_t *script, char *str, ...);
//print a script warning with filename and line number
void QDECL ScriptWarning(script_t *script, char *str, ...);