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comparison: src/Parser.h

src/Parser.h

changeset 105
6dbac3305614
parent 101
9ffae10ef76f
child 106
9174be9ac686
equal deleted inserted replaced
104:62da929f7814 105:6dbac3305614
41 // TODO: get rid of this 41 // TODO: get rid of this
42 #define MAX_MARKS 512 42 #define MAX_MARKS 512
43 43
44 class DataBuffer; 44 class DataBuffer;
45 class Lexer; 45 class Lexer;
46 class ScriptVariable; 46 class Variable;
47 47
48 // ============================================================================ 48 // ============================================================================
49 // 49 //
50 struct UndefinedLabel 50 struct UndefinedLabel
51 { 51 {
89 EAssignDecrement, 89 EAssignDecrement,
90 }; 90 };
91 91
92 // ============================================================================ 92 // ============================================================================
93 // 93 //
94 struct Variable
95 {
96 enum EWritability
97 {
98 WRITE_Mutable, // normal read-many-write-many variable
99 WRITE_Const, // write-once const variable
100 WRITE_Constexpr, // const variable whose value is known to compiler
101 };
102
103 String name;
104 String statename;
105 EType type;
106 int index;
107 EWritability writelevel;
108 int value;
109 String origin;
110
111 inline bool IsGlobal() const
112 {
113 return statename.IsEmpty();
114 }
115 };
116
117 // ============================================================================
118 //
94 struct CaseInfo 119 struct CaseInfo
95 { 120 {
96 ByteMark* mark; 121 ByteMark* mark;
97 int number; 122 int number;
98 DataBuffer* data; 123 DataBuffer* data;
106 { 131 {
107 ByteMark* mark1; 132 ByteMark* mark1;
108 ByteMark* mark2; 133 ByteMark* mark2;
109 EScopeType type; 134 EScopeType type;
110 DataBuffer* buffer1; 135 DataBuffer* buffer1;
136 int globalVarIndexBase;
137 int localVarIndexBase;
111 138
112 // switch-related stuff 139 // switch-related stuff
113 List<CaseInfo>::Iterator casecursor; 140 List<CaseInfo>::Iterator casecursor;
114 List<CaseInfo> cases; 141 List<CaseInfo> cases;
142 List<Variable*> localVariables;
143 List<Variable*> globalVariables;
115 }; 144 };
116 145
117 // ============================================================================ 146 // ============================================================================
118 // 147 //
119 class BotscriptParser 148 class BotscriptParser
129 158
130 BotscriptParser(); 159 BotscriptParser();
131 ~BotscriptParser(); 160 ~BotscriptParser();
132 void ParseBotscript (String fileName); 161 void ParseBotscript (String fileName);
133 DataBuffer* ParseCommand (CommandInfo* comm); 162 DataBuffer* ParseCommand (CommandInfo* comm);
134 DataBuffer* ParseAssignment (ScriptVariable* var); 163 DataBuffer* ParseAssignment (Variable* var);
135 EAssignmentOperator ParseAssignmentOperator (); 164 EAssignmentOperator ParseAssignmentOperator ();
136 String ParseFloat(); 165 String ParseFloat();
137 void PushScope (EReset reset = eResetScope); 166 void PushScope (EReset reset = eResetScope);
138 DataBuffer* ParseStatement(); 167 DataBuffer* ParseStatement();
139 void AddSwitchCase (DataBuffer* b); 168 void AddSwitchCase (DataBuffer* b);
141 void CheckNotToplevel(); 170 void CheckNotToplevel();
142 bool TokenIs (EToken a); 171 bool TokenIs (EToken a);
143 String GetTokenString(); 172 String GetTokenString();
144 String DescribePosition() const; 173 String DescribePosition() const;
145 void WriteToFile (String outfile); 174 void WriteToFile (String outfile);
175 Variable* FindVariable (const String& name);
176 bool IsInGlobalState() const;
177
178 inline ScopeInfo& GetScope (int offset)
179 {
180 return mScopeStack[mScopeCursor - offset];
181 }
146 182
147 inline int GetNumEvents() const 183 inline int GetNumEvents() const
148 { 184 {
149 return mNumEvents; 185 return mNumEvents;
150 } 186 }
177 EParserMode mCurrentMode; 213 EParserMode mCurrentMode;
178 String mCurrentState; 214 String mCurrentState;
179 bool mStateSpawnDefined; 215 bool mStateSpawnDefined;
180 bool mGotMainLoop; 216 bool mGotMainLoop;
181 int mScopeCursor; 217 int mScopeCursor;
182 DataBuffer* mIfExpression;
183 bool mCanElse; 218 bool mCanElse;
184 List<UndefinedLabel> mUndefinedLabels; 219 List<UndefinedLabel> mUndefinedLabels;
185 220
186 // How many bytes have we written to file? 221 // How many bytes have we written to file?
187 int mNumWrittenBytes; 222 int mNumWrittenBytes;
211 void ParseEventdef(); 246 void ParseEventdef();
212 void ParseFuncdef(); 247 void ParseFuncdef();
213 void writeMemberBuffers(); 248 void writeMemberBuffers();
214 void WriteStringTable(); 249 void WriteStringTable();
215 DataBuffer* ParseExpression (EType reqtype, bool fromhere = false); 250 DataBuffer* ParseExpression (EType reqtype, bool fromhere = false);
216 EDataHeader GetAssigmentDataHeader (EAssignmentOperator op, ScriptVariable* var); 251 EDataHeader GetAssigmentDataHeader (EAssignmentOperator op, Variable* var);
217 }; 252 };
218 253
219 #endif // BOTC_PARSER_H 254 #endif // BOTC_PARSER_H

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