mirror of
https://github.com/dhewm/dhewm3.git
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278 lines
6.6 KiB
C++
278 lines
6.6 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#ifndef __SCRIPT_COMPILER_H__
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#define __SCRIPT_COMPILER_H__
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const char * const RESULT_STRING = "<RESULT>";
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typedef struct opcode_s {
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const char *name;
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const char *opname;
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int priority;
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bool rightAssociative;
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idVarDef *type_a;
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idVarDef *type_b;
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idVarDef *type_c;
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} opcode_t;
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// These opcodes are no longer necessary:
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// OP_PUSH_OBJ:
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// OP_PUSH_OBJENT:
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enum {
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OP_RETURN,
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OP_UINC_F,
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OP_UINCP_F,
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OP_UDEC_F,
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OP_UDECP_F,
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OP_COMP_F,
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OP_MUL_F,
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OP_MUL_V,
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OP_MUL_FV,
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OP_MUL_VF,
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OP_DIV_F,
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OP_MOD_F,
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OP_ADD_F,
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OP_ADD_V,
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OP_ADD_S,
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OP_ADD_FS,
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OP_ADD_SF,
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OP_ADD_VS,
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OP_ADD_SV,
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OP_SUB_F,
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OP_SUB_V,
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OP_EQ_F,
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OP_EQ_V,
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OP_EQ_S,
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OP_EQ_E,
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OP_EQ_EO,
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OP_EQ_OE,
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OP_EQ_OO,
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OP_NE_F,
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OP_NE_V,
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OP_NE_S,
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OP_NE_E,
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OP_NE_EO,
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OP_NE_OE,
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OP_NE_OO,
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OP_LE,
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OP_GE,
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OP_LT,
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OP_GT,
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OP_INDIRECT_F,
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OP_INDIRECT_V,
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OP_INDIRECT_S,
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OP_INDIRECT_ENT,
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OP_INDIRECT_BOOL,
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OP_INDIRECT_OBJ,
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OP_ADDRESS,
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OP_EVENTCALL,
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OP_OBJECTCALL,
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OP_SYSCALL,
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OP_STORE_F,
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OP_STORE_V,
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OP_STORE_S,
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OP_STORE_ENT,
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OP_STORE_BOOL,
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OP_STORE_OBJENT,
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OP_STORE_OBJ,
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OP_STORE_ENTOBJ,
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OP_STORE_FTOS,
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OP_STORE_BTOS,
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OP_STORE_VTOS,
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OP_STORE_FTOBOOL,
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OP_STORE_BOOLTOF,
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OP_STOREP_F,
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OP_STOREP_V,
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OP_STOREP_S,
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OP_STOREP_ENT,
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OP_STOREP_FLD,
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OP_STOREP_BOOL,
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OP_STOREP_OBJ,
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OP_STOREP_OBJENT,
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OP_STOREP_FTOS,
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OP_STOREP_BTOS,
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OP_STOREP_VTOS,
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OP_STOREP_FTOBOOL,
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OP_STOREP_BOOLTOF,
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OP_UMUL_F,
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OP_UMUL_V,
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OP_UDIV_F,
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OP_UDIV_V,
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OP_UMOD_F,
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OP_UADD_F,
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OP_UADD_V,
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OP_USUB_F,
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OP_USUB_V,
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OP_UAND_F,
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OP_UOR_F,
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OP_NOT_BOOL,
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OP_NOT_F,
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OP_NOT_V,
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OP_NOT_S,
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OP_NOT_ENT,
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OP_NEG_F,
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OP_NEG_V,
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OP_INT_F,
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OP_IF,
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OP_IFNOT,
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OP_CALL,
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OP_THREAD,
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OP_OBJTHREAD,
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OP_PUSH_F,
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OP_PUSH_V,
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OP_PUSH_S,
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OP_PUSH_ENT,
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OP_PUSH_OBJ,
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OP_PUSH_OBJENT,
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OP_PUSH_FTOS,
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OP_PUSH_BTOF,
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OP_PUSH_FTOB,
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OP_PUSH_VTOS,
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OP_PUSH_BTOS,
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OP_GOTO,
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OP_AND,
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OP_AND_BOOLF,
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OP_AND_FBOOL,
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OP_AND_BOOLBOOL,
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OP_OR,
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OP_OR_BOOLF,
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OP_OR_FBOOL,
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OP_OR_BOOLBOOL,
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OP_BITAND,
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OP_BITOR,
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OP_BREAK, // placeholder op. not used in final code
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OP_CONTINUE, // placeholder op. not used in final code
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NUM_OPCODES
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};
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class idCompiler {
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private:
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static bool punctuationValid[ 256 ];
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static const char *punctuation[];
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idParser parser;
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idParser *parserPtr;
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idToken token;
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idTypeDef *immediateType;
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eval_t immediate;
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bool eof;
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bool console;
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bool callthread;
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int braceDepth;
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int loopDepth;
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int currentLineNumber;
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int currentFileNumber;
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int errorCount;
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idVarDef *scope; // the function being parsed, or NULL
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const idVarDef *basetype; // for accessing fields
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float Divide( float numerator, float denominator );
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void Error( const char *error, ... ) const id_attribute((format(printf,2,3)));
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void Warning( const char *message, ... ) const id_attribute((format(printf,2,3)));
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idVarDef *OptimizeOpcode( const opcode_t *op, idVarDef *var_a, idVarDef *var_b );
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idVarDef *EmitOpcode( const opcode_t *op, idVarDef *var_a, idVarDef *var_b );
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idVarDef *EmitOpcode( int op, idVarDef *var_a, idVarDef *var_b );
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bool EmitPush( idVarDef *expression, const idTypeDef *funcArg );
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void NextToken( void );
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void ExpectToken( const char *string );
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bool CheckToken( const char *string );
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void ParseName( idStr &name );
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void SkipOutOfFunction( void );
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void SkipToSemicolon( void );
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idTypeDef *CheckType( void );
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idTypeDef *ParseType( void );
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idVarDef *FindImmediate( const idTypeDef *type, const eval_t *eval, const char *string ) const;
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idVarDef *GetImmediate( idTypeDef *type, const eval_t *eval, const char *string );
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idVarDef *VirtualFunctionConstant( idVarDef *func );
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idVarDef *SizeConstant( int size );
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idVarDef *JumpConstant( int value );
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idVarDef *JumpDef( int jumpfrom, int jumpto );
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idVarDef *JumpTo( int jumpto );
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idVarDef *JumpFrom( int jumpfrom );
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idVarDef *ParseImmediate( void );
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idVarDef *EmitFunctionParms( int op, idVarDef *func, int startarg, int startsize, idVarDef *object );
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idVarDef *ParseFunctionCall( idVarDef *func );
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idVarDef *ParseObjectCall( idVarDef *object, idVarDef *func );
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idVarDef *ParseEventCall( idVarDef *object, idVarDef *func );
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idVarDef *ParseSysObjectCall( idVarDef *func );
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idVarDef *LookupDef( const char *name, const idVarDef *baseobj );
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idVarDef *ParseValue( void );
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idVarDef *GetTerm( void );
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bool TypeMatches( etype_t type1, etype_t type2 ) const;
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idVarDef *GetExpression( int priority );
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idTypeDef *GetTypeForEventArg( char argType );
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void PatchLoop( int start, int continuePos );
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void ParseReturnStatement( void );
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void ParseWhileStatement( void );
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void ParseForStatement( void );
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void ParseDoWhileStatement( void );
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void ParseIfStatement( void );
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void ParseStatement( void );
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void ParseObjectDef( const char *objname );
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idTypeDef *ParseFunction( idTypeDef *returnType, const char *name );
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void ParseFunctionDef( idTypeDef *returnType, const char *name );
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void ParseVariableDef( idTypeDef *type, const char *name );
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void ParseEventDef( idTypeDef *type, const char *name );
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void ParseDefs( void );
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void ParseNamespace( idVarDef *newScope );
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public :
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static const opcode_t opcodes[];
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idCompiler();
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void CompileFile( const char *text, const char *filename, bool console );
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};
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#endif /* !__SCRIPT_COMPILER_H__ */
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