mirror of
https://github.com/id-Software/DOOM-3-BFG.git
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288 lines
6.8 KiB
C++
288 lines
6.8 KiB
C++
/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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Copyright (C) 2012 Robert Beckebans
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition 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 BFG Edition 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 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 BFG Edition 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 BFG Edition 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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{
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// RB begin
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const char* name;
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const char* opname;
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// RB end
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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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{
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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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{
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private:
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static bool punctuationValid[ 256 ];
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// RB begin
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static const char* punctuation[];
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// RB end
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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( VERIFY_FORMAT_STRING const char* error, ... ) const;
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void Warning( VERIFY_FORMAT_STRING const char* message, ... ) const;
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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();
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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();
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void SkipToSemicolon();
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idTypeDef* CheckType();
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idTypeDef* ParseType();
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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();
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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();
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idVarDef* GetTerm();
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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();
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void ParseWhileStatement();
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void ParseForStatement();
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void ParseDoWhileStatement();
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void ParseIfStatement();
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void ParseStatement();
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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();
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void ParseNamespace( idVarDef* newScope );
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public :
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// RB: added const
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static const opcode_t opcodes[];
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// RB end
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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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