comparison: src/Parser.h
src/Parser.h
- changeset 88
- 5def6ff8b466
- child 91
- 427eb377d53e
equal
deleted
inserted
replaced
| 87:8f65914e7046 | 88:5def6ff8b466 |
|---|---|
| 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_PARSER_H | |
| 30 #define BOTC_PARSER_H | |
| 31 | |
| 32 #include <stdio.h> | |
| 33 #include "Main.h" | |
| 34 #include "Commands.h" | |
| 35 #include "LexerScanner.h" | |
| 36 #include "Tokens.h" | |
| 37 | |
| 38 // TODO: get rid of this | |
| 39 #define MAX_SCOPE 32 | |
| 40 | |
| 41 // TODO: get rid of this too? | |
| 42 #define MAX_CASE 64 | |
| 43 | |
| 44 // TODO: get rid of this | |
| 45 #define MAX_MARKS 512 | |
| 46 | |
| 47 class DataBuffer; | |
| 48 class Lexer; | |
| 49 class ScriptVariable; | |
| 50 | |
| 51 // ============================================================================ | |
| 52 // | |
| 53 struct UndefinedLabel | |
| 54 { | |
| 55 String name; | |
| 56 ByteMark* target; | |
| 57 }; | |
| 58 | |
| 59 // ============================================================================ | |
| 60 // Operators | |
| 61 // | |
| 62 enum EOperator | |
| 63 { | |
| 64 OPER_ADD, | |
| 65 OPER_SUBTRACT, | |
| 66 OPER_MULTIPLY, | |
| 67 OPER_DIVIDE, | |
| 68 OPER_MODULUS, | |
| 69 OPER_ASSIGN, | |
| 70 OPER_ASSIGNADD, | |
| 71 OPER_ASSIGNSUB, | |
| 72 OPER_ASSIGNMUL, | |
| 73 OPER_ASSIGNDIV, | |
| 74 OPER_ASSIGNMOD, // -- 10 | |
| 75 OPER_EQUALS, | |
| 76 OPER_NOTEQUALS, | |
| 77 OPER_LESSTHAN, | |
| 78 OPER_GREATERTHAN, | |
| 79 OPER_LESSTHANEQUALS, | |
| 80 OPER_GREATERTHANEQUALS, | |
| 81 OPER_LEFTSHIFT, | |
| 82 OPER_RIGHTSHIFT, | |
| 83 OPER_ASSIGNLEFTSHIFT, | |
| 84 OPER_ASSIGNRIGHTSHIFT, // -- 20 | |
| 85 OPER_OR, | |
| 86 OPER_AND, | |
| 87 OPER_BITWISEOR, | |
| 88 OPER_BITWISEAND, | |
| 89 OPER_BITWISEEOR, | |
| 90 OPER_TERNARY, | |
| 91 OPER_STRLEN, | |
| 92 }; | |
| 93 | |
| 94 // ============================================================================ | |
| 95 // | |
| 96 struct operatorInfo | |
| 97 { | |
| 98 EOperator opercode; | |
| 99 EDataHeader dataheader; | |
| 100 EToken token; | |
| 101 }; | |
| 102 | |
| 103 // ============================================================================ | |
| 104 // Mark types | |
| 105 // | |
| 106 enum eMarkType | |
| 107 { | |
| 108 eLabelMark, | |
| 109 eIfMark, | |
| 110 eInternalMark, // internal structures | |
| 111 }; | |
| 112 | |
| 113 // ============================================================================ | |
| 114 // Scope types | |
| 115 // | |
| 116 enum EScopeType | |
| 117 { | |
| 118 eUnknownScope, | |
| 119 eIfScope, | |
| 120 eWhileScope, | |
| 121 eForScope, | |
| 122 eDoScope, | |
| 123 eSwitchScope, | |
| 124 eElseScope, | |
| 125 }; | |
| 126 | |
| 127 // ============================================================================ | |
| 128 // Meta-data about scopes | |
| 129 // | |
| 130 struct ScopeInfo | |
| 131 { | |
| 132 ByteMark* mark1; | |
| 133 ByteMark* mark2; | |
| 134 EScopeType type; | |
| 135 DataBuffer* buffer1; | |
| 136 | |
| 137 // switch-related stuff | |
| 138 // Which case are we at? | |
| 139 int casecursor; | |
| 140 | |
| 141 // Marks to case-blocks | |
| 142 ByteMark* casemarks[MAX_CASE]; | |
| 143 | |
| 144 // Numbers of the case labels | |
| 145 int casenumbers[MAX_CASE]; | |
| 146 | |
| 147 // actual case blocks | |
| 148 DataBuffer* casebuffers[MAX_CASE]; | |
| 149 | |
| 150 // What is the current buffer of the block? | |
| 151 DataBuffer* recordbuffer; | |
| 152 }; | |
| 153 | |
| 154 // ============================================================================ | |
| 155 // | |
| 156 struct ConstantInfo | |
| 157 { | |
| 158 String name; | |
| 159 EType type; | |
| 160 String val; | |
| 161 }; | |
| 162 | |
| 163 // ============================================================================ | |
| 164 // | |
| 165 class BotscriptParser | |
| 166 { | |
| 167 PROPERTY (public, bool, ReadOnly, BOOL_OPS, STOCK_WRITE) | |
| 168 | |
| 169 public: | |
| 170 // ==================================================================== | |
| 171 // METHODS | |
| 172 BotscriptParser(); | |
| 173 ~BotscriptParser(); | |
| 174 void ParseBotscript (String fileName); | |
| 175 DataBuffer* ParseCommand (CommandInfo* comm); | |
| 176 DataBuffer* ParseExpression (EType reqtype); | |
| 177 DataBuffer* ParseAssignment (ScriptVariable* var); | |
| 178 int ParseOperator (bool peek = false); | |
| 179 DataBuffer* ParseExprValue (EType reqtype); | |
| 180 String ParseFloat(); | |
| 181 void PushScope(); | |
| 182 DataBuffer* ParseStatement(); | |
| 183 void AddSwitchCase (DataBuffer* b); | |
| 184 void CheckToplevel(); | |
| 185 void CheckNotToplevel(); | |
| 186 bool TokenIs (EToken a); | |
| 187 String GetTokenString(); | |
| 188 String DescribePosition() const; | |
| 189 void WriteToFile (String outfile); | |
| 190 | |
| 191 inline int GetNumEvents() const | |
| 192 { | |
| 193 return mNumEvents; | |
| 194 } | |
| 195 | |
| 196 inline int GetNumStates() const | |
| 197 { | |
| 198 return mNumStates; | |
| 199 } | |
| 200 | |
| 201 private: | |
| 202 // The main buffer - the contents of this is what we | |
| 203 // write to file after parsing is complete | |
| 204 DataBuffer* mMainBuffer; | |
| 205 | |
| 206 // onenter buffer - the contents of the onenter{} block | |
| 207 // is buffered here and is merged further at the end of state | |
| 208 DataBuffer* mOnEnterBuffer; | |
| 209 | |
| 210 // Mainloop buffer - the contents of the mainloop{} block | |
| 211 // is buffered here and is merged further at the end of state | |
| 212 DataBuffer* mMainLoopBuffer; | |
| 213 | |
| 214 // Switch buffer - switch case data is recorded to this | |
| 215 // buffer initially, instead of into main buffer. | |
| 216 DataBuffer* mSwitchBuffer; | |
| 217 | |
| 218 Lexer* mLexer; | |
| 219 int mNumStates; | |
| 220 int mNumEvents; | |
| 221 EParserMode mCurrentMode; | |
| 222 String mCurrentState; | |
| 223 bool mStateSpawnDefined; | |
| 224 bool mGotMainLoop; | |
| 225 int mScopeCursor; | |
| 226 DataBuffer* mIfExpression; | |
| 227 bool mCanElse; | |
| 228 List<UndefinedLabel> mUndefinedLabels; | |
| 229 List<ConstantInfo> mConstants; | |
| 230 | |
| 231 // How many bytes have we written to file? | |
| 232 int mNumWrittenBytes; | |
| 233 | |
| 234 // Scope data | |
| 235 // TODO: make a List | |
| 236 ScopeInfo mScopeStack[MAX_SCOPE]; | |
| 237 | |
| 238 DataBuffer* buffer(); | |
| 239 ConstantInfo* FindConstant (const String& tok); | |
| 240 void ParseStateBlock(); | |
| 241 void ParseEventBlock(); | |
| 242 void ParseMainloop(); | |
| 243 void ParseOnEnterExit(); | |
| 244 void ParseVariableDeclaration(); | |
| 245 void ParseGoto(); | |
| 246 void ParseIf(); | |
| 247 void ParseElse(); | |
| 248 void ParseWhileBlock(); | |
| 249 void ParseForBlock(); | |
| 250 void ParseDoBlock(); | |
| 251 void ParseSwitchBlock(); | |
| 252 void ParseSwitchCase(); | |
| 253 void ParseSwitchDefault(); | |
| 254 void ParseBreak(); | |
| 255 void ParseContinue(); | |
| 256 void ParseBlockEnd(); | |
| 257 void ParseConst(); | |
| 258 void ParseLabel(); | |
| 259 void ParseEventdef(); | |
| 260 void ParseFuncdef(); | |
| 261 void writeMemberBuffers(); | |
| 262 void WriteStringTable(); | |
| 263 }; | |
| 264 | |
| 265 #endif // BOTC_PARSER_H |
