comparison: scriptreader.h
scriptreader.h
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- 11f23fabf8a6
- parent 70
- fc257920ac00
- child 72
- 03e4d9db3fd9
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| 70:fc257920ac00 | 71:11f23fabf8a6 |
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| 1 /* | |
| 2 * botc source code | |
| 3 * Copyright (C) 2012 Santeri `Dusk` Piippo | |
| 4 * All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright notice, | |
| 10 * this list of conditions and the following disclaimer. | |
| 11 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 12 * this list of conditions and the following disclaimer in the documentation | |
| 13 * and/or other materials provided with the distribution. | |
| 14 * 3. Neither the name of the developer nor the names of its contributors may | |
| 15 * be used to endorse or promote products derived from this software without | |
| 16 * specific prior written permission. | |
| 17 * 4. Redistributions in any form must be accompanied by information on how to | |
| 18 * obtain complete source code for the software and any accompanying | |
| 19 * software that uses the software. The source code must either be included | |
| 20 * in the distribution or be available for no more than the cost of | |
| 21 * distribution plus a nominal fee, and must be freely redistributable | |
| 22 * under reasonable conditions. For an executable file, complete source | |
| 23 * code means the source code for all modules it contains. It does not | |
| 24 * include source code for modules or files that typically accompany the | |
| 25 * major components of the operating system on which the executable file | |
| 26 * runs. | |
| 27 * | |
| 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 32 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 38 * POSSIBILITY OF SUCH DAMAGE. | |
| 39 */ | |
| 40 | |
| 41 #ifndef __SCRIPTREADER_H__ | |
| 42 #define __SCRIPTREADER_H__ | |
| 43 | |
| 44 #include <stdio.h> | |
| 45 #include "str.h" | |
| 46 #include "commands.h" | |
| 47 #include "objwriter.h" | |
| 48 | |
| 49 #define MAX_FILESTACK 8 | |
| 50 #define MAX_SCOPE 32 | |
| 51 #define MAX_CASE 64 | |
| 52 | |
| 53 class ScriptVar; | |
| 54 | |
| 55 // Operators | |
| 56 enum operator_e { | |
| 57 OPER_ADD, | |
| 58 OPER_SUBTRACT, | |
| 59 OPER_MULTIPLY, | |
| 60 OPER_DIVIDE, | |
| 61 OPER_MODULUS, | |
| 62 OPER_ASSIGN, | |
| 63 OPER_ASSIGNADD, | |
| 64 OPER_ASSIGNSUB, | |
| 65 OPER_ASSIGNMUL, | |
| 66 OPER_ASSIGNDIV, | |
| 67 OPER_ASSIGNMOD, // -- 10 | |
| 68 OPER_EQUALS, | |
| 69 OPER_NOTEQUALS, | |
| 70 OPER_LESSTHAN, | |
| 71 OPER_GREATERTHAN, | |
| 72 OPER_LESSTHANEQUALS, | |
| 73 OPER_GREATERTHANEQUALS, | |
| 74 OPER_LEFTSHIFT, | |
| 75 OPER_RIGHTSHIFT, | |
| 76 OPER_ASSIGNLEFTSHIFT, | |
| 77 OPER_ASSIGNRIGHTSHIFT, // -- 20 | |
| 78 OPER_OR, | |
| 79 OPER_AND, | |
| 80 OPER_BITWISEOR, | |
| 81 OPER_BITWISEAND, | |
| 82 OPER_BITWISEEOR, | |
| 83 OPER_TERNARY, | |
| 84 OPER_STRLEN, | |
| 85 }; | |
| 86 | |
| 87 // Mark types | |
| 88 enum marktype_e { | |
| 89 MARKTYPE_LABEL, | |
| 90 MARKTYPE_IF, | |
| 91 MARKTYPE_INTERNAL, // internal structures | |
| 92 }; | |
| 93 | |
| 94 // Block types | |
| 95 enum scopetype_e { | |
| 96 SCOPETYPE_UNKNOWN, | |
| 97 SCOPETYPE_IF, | |
| 98 SCOPETYPE_WHILE, | |
| 99 SCOPETYPE_FOR, | |
| 100 SCOPETYPE_DO, | |
| 101 SCOPETYPE_SWITCH, | |
| 102 SCOPETYPE_ELSE, | |
| 103 }; | |
| 104 | |
| 105 // ============================================================================ | |
| 106 // Meta-data about blocks | |
| 107 struct ScopeInfo { | |
| 108 unsigned int mark1; | |
| 109 unsigned int mark2; | |
| 110 scopetype_e type; | |
| 111 DataBuffer* buffer1; | |
| 112 | |
| 113 // switch-related stuff | |
| 114 // Which case are we at? | |
| 115 short casecursor; | |
| 116 | |
| 117 // Marks to case-blocks | |
| 118 int casemarks[MAX_CASE]; | |
| 119 | |
| 120 // Numbers of the case labels | |
| 121 int casenumbers[MAX_CASE]; | |
| 122 | |
| 123 // actual case blocks | |
| 124 DataBuffer* casebuffers[MAX_CASE]; | |
| 125 | |
| 126 // What is the current buffer of the block? | |
| 127 DataBuffer* recordbuffer; | |
| 128 }; | |
| 129 | |
| 130 // ============================================================================ | |
| 131 typedef struct { | |
| 132 str name; | |
| 133 type_e type; | |
| 134 str val; | |
| 135 } constinfo_t; | |
| 136 | |
| 137 // ============================================================================ | |
| 138 // The script reader reads the script, parses it and tells the object writer | |
| 139 // the bytecode it needs to write to file. | |
| 140 class ScriptReader { | |
| 141 public: | |
| 142 // ==================================================================== | |
| 143 // MEMBERS | |
| 144 FILE* fp[MAX_FILESTACK]; | |
| 145 char* filepath[MAX_FILESTACK]; | |
| 146 int fc; | |
| 147 | |
| 148 unsigned int pos[MAX_FILESTACK]; | |
| 149 unsigned int curline[MAX_FILESTACK]; | |
| 150 unsigned int curchar[MAX_FILESTACK]; | |
| 151 ScopeInfo scopestack[MAX_SCOPE]; | |
| 152 long savedpos[MAX_FILESTACK]; // filepointer cursor position | |
| 153 str token; | |
| 154 int commentmode; | |
| 155 long prevpos; | |
| 156 str prevtoken; | |
| 157 | |
| 158 // ==================================================================== | |
| 159 // METHODS | |
| 160 // scriptreader.cxx: | |
| 161 ScriptReader (str path); | |
| 162 ~ScriptReader (); | |
| 163 void OpenFile (str path); | |
| 164 void CloseFile (unsigned int u = MAX_FILESTACK); | |
| 165 char ReadChar (); | |
| 166 char PeekChar (int offset = 0); | |
| 167 bool Next (bool peek = false); | |
| 168 void Prev (); | |
| 169 str PeekNext (int offset = 0); | |
| 170 void Seek (unsigned int n, int origin); | |
| 171 void MustNext (const char* c = ""); | |
| 172 void MustThis (const char* c); | |
| 173 void MustString (bool gotquote = false); | |
| 174 void MustNumber (bool fromthis = false); | |
| 175 void MustBool (); | |
| 176 bool BoolValue (); | |
| 177 | |
| 178 void ParserError (const char* message, ...); | |
| 179 void ParserWarning (const char* message, ...); | |
| 180 | |
| 181 // parser.cxx: | |
| 182 void ParseBotScript (ObjWriter* w); | |
| 183 DataBuffer* ParseCommand (CommandDef* comm); | |
| 184 DataBuffer* ParseExpression (type_e reqtype); | |
| 185 DataBuffer* ParseAssignment (ScriptVar* var); | |
| 186 int ParseOperator (bool peek = false); | |
| 187 DataBuffer* ParseExprValue (type_e reqtype); | |
| 188 str ParseFloat (); | |
| 189 void PushScope (); | |
| 190 | |
| 191 // preprocessor.cxx: | |
| 192 void PreprocessDirectives (); | |
| 193 void PreprocessMacros (); | |
| 194 DataBuffer* ParseStatement (ObjWriter* w); | |
| 195 void AddSwitchCase (ObjWriter* w, DataBuffer* b); | |
| 196 | |
| 197 private: | |
| 198 bool atnewline; | |
| 199 char c; | |
| 200 void ParserMessage (const char* header, char* message); | |
| 201 | |
| 202 bool DoDirectivePreprocessing (); | |
| 203 char PPReadChar (); | |
| 204 void PPMustChar (char c); | |
| 205 str PPReadWord (char &term); | |
| 206 }; | |
| 207 | |
| 208 constinfo_t* FindConstant (str token); | |
| 209 extern bool g_Neurosphere; | |
| 210 | |
| 211 #endif // __SCRIPTREADER_H__ |
