mirror of
https://github.com/ZDoom/qzdoom.git
synced 2025-04-30 05:10:53 +00:00
de6969997a
A few notes: * this accesses the lines array in sector_t which effectively is a pointer to an array of pointers - a type the parser can not represent. The compiler has no problems with it, so for now it is defined internally. * array sizes were limited to 65536 entries because the 'bound' instruction only existed as an immediate version with no provisions for larger values. For the static map arrays 65536 is not sufficient so now there are alternative instructions for these cases. * despite the above, at the moment there is no proper bounds checking for arrays that have no fixed size. To do this, a lot more work is needed. The type system as-is is not prepared for such a scenario.
509 lines
14 KiB
C++
509 lines
14 KiB
C++
/*
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** zcc_expr.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright -2016 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "dobject.h"
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#include "sc_man.h"
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#include "c_console.h"
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#include "c_dispatch.h"
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#include "w_wad.h"
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#include "cmdlib.h"
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#include "m_alloc.h"
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#include "i_system.h"
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#include "m_argv.h"
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#include "v_text.h"
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#include "zcc_parser.h"
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#include "zcc_compile.h"
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static FString ZCCTokenName(int terminal);
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#include "zcc-parse.h"
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#include "zcc-parse.c"
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struct TokenMapEntry
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{
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SWORD TokenType;
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WORD TokenName;
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TokenMapEntry(SWORD a, WORD b)
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: TokenType(a), TokenName(b)
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{ }
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};
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static TMap<SWORD, TokenMapEntry> TokenMap;
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static SWORD BackTokenMap[YYERRORSYMBOL]; // YYERRORSYMBOL immediately follows the terminals described by the grammar
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#define TOKENDEF2(sc, zcc, name) { TokenMapEntry tme(zcc, name); TokenMap.Insert(sc, tme); } BackTokenMap[zcc] = sc
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#define TOKENDEF(sc, zcc) TOKENDEF2(sc, zcc, NAME_None)
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static void InitTokenMap()
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{
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TOKENDEF ('=', ZCC_EQ);
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TOKENDEF (TK_MulEq, ZCC_MULEQ);
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TOKENDEF (TK_DivEq, ZCC_DIVEQ);
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TOKENDEF (TK_ModEq, ZCC_MODEQ);
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TOKENDEF (TK_AddEq, ZCC_ADDEQ);
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TOKENDEF (TK_SubEq, ZCC_SUBEQ);
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TOKENDEF (TK_LShiftEq, ZCC_LSHEQ);
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TOKENDEF (TK_RShiftEq, ZCC_RSHEQ);
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TOKENDEF (TK_URShiftEq, ZCC_URSHEQ);
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TOKENDEF (TK_AndEq, ZCC_ANDEQ);
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TOKENDEF (TK_OrEq, ZCC_OREQ);
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TOKENDEF (TK_XorEq, ZCC_XOREQ);
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TOKENDEF ('?', ZCC_QUESTION);
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TOKENDEF (':', ZCC_COLON);
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TOKENDEF (TK_OrOr, ZCC_OROR);
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TOKENDEF (TK_AndAnd, ZCC_ANDAND);
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TOKENDEF (TK_Eq, ZCC_EQEQ);
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TOKENDEF (TK_Neq, ZCC_NEQ);
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TOKENDEF (TK_ApproxEq, ZCC_APPROXEQ);
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TOKENDEF ('<', ZCC_LT);
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TOKENDEF ('>', ZCC_GT);
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TOKENDEF (TK_Leq, ZCC_LTEQ);
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TOKENDEF (TK_Geq, ZCC_GTEQ);
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TOKENDEF (TK_LtGtEq, ZCC_LTGTEQ);
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TOKENDEF (TK_Is, ZCC_IS);
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TOKENDEF (TK_DotDot, ZCC_DOTDOT);
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TOKENDEF (TK_Ellipsis, ZCC_ELLIPSIS);
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TOKENDEF ('|', ZCC_OR);
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TOKENDEF ('^', ZCC_XOR);
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TOKENDEF ('&', ZCC_AND);
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TOKENDEF (TK_LShift, ZCC_LSH);
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TOKENDEF (TK_RShift, ZCC_RSH);
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TOKENDEF (TK_URShift, ZCC_URSH);
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TOKENDEF ('-', ZCC_SUB);
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TOKENDEF ('+', ZCC_ADD);
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TOKENDEF ('*', ZCC_MUL);
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TOKENDEF ('/', ZCC_DIV);
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TOKENDEF ('%', ZCC_MOD);
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TOKENDEF (TK_Cross, ZCC_CROSSPROD);
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TOKENDEF (TK_Dot, ZCC_DOTPROD);
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TOKENDEF (TK_MulMul, ZCC_POW);
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TOKENDEF (TK_Incr, ZCC_ADDADD);
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TOKENDEF (TK_Decr, ZCC_SUBSUB);
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TOKENDEF ('.', ZCC_DOT);
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TOKENDEF ('(', ZCC_LPAREN);
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TOKENDEF (')', ZCC_RPAREN);
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TOKENDEF (TK_ColonColon, ZCC_SCOPE);
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TOKENDEF (';', ZCC_SEMICOLON);
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TOKENDEF (',', ZCC_COMMA);
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TOKENDEF (TK_Class, ZCC_CLASS);
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TOKENDEF (TK_Abstract, ZCC_ABSTRACT);
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TOKENDEF (TK_Native, ZCC_NATIVE);
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TOKENDEF (TK_Action, ZCC_ACTION);
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TOKENDEF (TK_Replaces, ZCC_REPLACES);
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TOKENDEF (TK_Static, ZCC_STATIC);
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TOKENDEF (TK_Private, ZCC_PRIVATE);
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TOKENDEF (TK_Protected, ZCC_PROTECTED);
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TOKENDEF (TK_Latent, ZCC_LATENT);
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TOKENDEF (TK_Virtual, ZCC_VIRTUAL);
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TOKENDEF (TK_Override, ZCC_OVERRIDE);
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TOKENDEF (TK_Final, ZCC_FINAL);
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TOKENDEF (TK_Meta, ZCC_META);
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TOKENDEF (TK_Deprecated, ZCC_DEPRECATED);
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TOKENDEF (TK_ReadOnly, ZCC_READONLY);
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TOKENDEF ('{', ZCC_LBRACE);
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TOKENDEF ('}', ZCC_RBRACE);
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TOKENDEF (TK_Struct, ZCC_STRUCT);
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TOKENDEF (TK_Enum, ZCC_ENUM);
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TOKENDEF2(TK_SByte, ZCC_SBYTE, NAME_sByte);
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TOKENDEF2(TK_Byte, ZCC_BYTE, NAME_Byte);
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TOKENDEF2(TK_Short, ZCC_SHORT, NAME_Short);
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TOKENDEF2(TK_UShort, ZCC_USHORT, NAME_uShort);
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TOKENDEF2(TK_Int8, ZCC_SBYTE, NAME_int8);
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TOKENDEF2(TK_UInt8, ZCC_BYTE, NAME_uint8);
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TOKENDEF2(TK_Int16, ZCC_SHORT, NAME_int16);
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TOKENDEF2(TK_UInt16, ZCC_USHORT, NAME_uint16);
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TOKENDEF2(TK_Int, ZCC_INT, NAME_Int);
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TOKENDEF2(TK_UInt, ZCC_UINT, NAME_uInt);
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TOKENDEF2(TK_Bool, ZCC_BOOL, NAME_Bool);
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TOKENDEF2(TK_Float, ZCC_FLOAT, NAME_Float);
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TOKENDEF2(TK_Double, ZCC_DOUBLE, NAME_Double);
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TOKENDEF2(TK_String, ZCC_STRING, NAME_String);
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TOKENDEF2(TK_Vector2, ZCC_VECTOR2, NAME_Vector2);
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TOKENDEF2(TK_Vector3, ZCC_VECTOR3, NAME_Vector3);
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TOKENDEF2(TK_Name, ZCC_NAME, NAME_Name);
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TOKENDEF2(TK_Map, ZCC_MAP, NAME_Map);
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TOKENDEF2(TK_Array, ZCC_ARRAY, NAME_Array);
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TOKENDEF (TK_Void, ZCC_VOID);
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TOKENDEF (TK_True, ZCC_TRUE);
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TOKENDEF (TK_False, ZCC_FALSE);
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TOKENDEF ('[', ZCC_LBRACKET);
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TOKENDEF (']', ZCC_RBRACKET);
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TOKENDEF (TK_In, ZCC_IN);
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TOKENDEF (TK_Out, ZCC_OUT);
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TOKENDEF (TK_Optional, ZCC_OPTIONAL);
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TOKENDEF (TK_Super, ZCC_SUPER);
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TOKENDEF (TK_Null, ZCC_NULLPTR);
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TOKENDEF ('~', ZCC_TILDE);
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TOKENDEF ('!', ZCC_BANG);
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TOKENDEF (TK_SizeOf, ZCC_SIZEOF);
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TOKENDEF (TK_AlignOf, ZCC_ALIGNOF);
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TOKENDEF (TK_Continue, ZCC_CONTINUE);
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TOKENDEF (TK_Break, ZCC_BREAK);
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TOKENDEF (TK_Return, ZCC_RETURN);
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TOKENDEF (TK_Do, ZCC_DO);
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TOKENDEF (TK_For, ZCC_FOR);
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TOKENDEF (TK_While, ZCC_WHILE);
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TOKENDEF (TK_Until, ZCC_UNTIL);
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TOKENDEF (TK_If, ZCC_IF);
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TOKENDEF (TK_Else, ZCC_ELSE);
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TOKENDEF (TK_Switch, ZCC_SWITCH);
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TOKENDEF (TK_Case, ZCC_CASE);
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TOKENDEF2(TK_Default, ZCC_DEFAULT, NAME_Default);
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TOKENDEF (TK_Const, ZCC_CONST);
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TOKENDEF (TK_Stop, ZCC_STOP);
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TOKENDEF (TK_Wait, ZCC_WAIT);
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TOKENDEF (TK_Fail, ZCC_FAIL);
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TOKENDEF (TK_Loop, ZCC_LOOP);
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TOKENDEF (TK_Goto, ZCC_GOTO);
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TOKENDEF (TK_States, ZCC_STATES);
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TOKENDEF2(TK_State, ZCC_STATE, NAME_State);
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TOKENDEF2(TK_Color, ZCC_COLOR, NAME_Color);
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TOKENDEF2(TK_Sound, ZCC_SOUND, NAME_Sound);
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TOKENDEF (TK_Identifier, ZCC_IDENTIFIER);
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TOKENDEF (TK_StringConst, ZCC_STRCONST);
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TOKENDEF (TK_NameConst, ZCC_NAMECONST);
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TOKENDEF (TK_IntConst, ZCC_INTCONST);
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TOKENDEF (TK_UIntConst, ZCC_UINTCONST);
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TOKENDEF (TK_FloatConst, ZCC_FLOATCONST);
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TOKENDEF (TK_NonWhitespace, ZCC_NWS);
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TOKENDEF (TK_Bright, ZCC_BRIGHT);
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TOKENDEF (TK_Slow, ZCC_SLOW);
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TOKENDEF (TK_Fast, ZCC_FAST);
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TOKENDEF (TK_NoDelay, ZCC_NODELAY);
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TOKENDEF (TK_Offset, ZCC_OFFSET);
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TOKENDEF (TK_CanRaise, ZCC_CANRAISE);
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TOKENDEF (TK_Light, ZCC_LIGHT);
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TOKENDEF (TK_Extend, ZCC_EXTEND);
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}
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#undef TOKENDEF
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#undef TOKENDEF2
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static void ParseSingleFile(const char *filename, int lump, void *parser, ZCCParseState &state)
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{
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int tokentype;
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//bool failed;
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ZCCToken value;
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FScanner sc;
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if (filename != nullptr)
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{
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lump = Wads.CheckNumForFullName(filename, true);
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if (lump >= 0)
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{
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sc.OpenLumpNum(lump);
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}
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else
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{
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Printf("Could not find script lump '%s'\n", filename);
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return;
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}
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}
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else sc.OpenLumpNum(lump);
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state.sc = ≻
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while (sc.GetToken())
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{
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value.SourceLoc = sc.GetMessageLine();
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switch (sc.TokenType)
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{
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case TK_StringConst:
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value.String = state.Strings.Alloc(sc.String, sc.StringLen);
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tokentype = ZCC_STRCONST;
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break;
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case TK_NameConst:
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value.Int = sc.Name;
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tokentype = ZCC_NAMECONST;
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break;
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case TK_IntConst:
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value.Int = sc.Number;
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tokentype = ZCC_INTCONST;
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break;
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case TK_UIntConst:
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value.Int = sc.Number;
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tokentype = ZCC_UINTCONST;
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break;
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case TK_FloatConst:
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value.Float = sc.Float;
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tokentype = ZCC_FLOATCONST;
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break;
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case TK_Identifier:
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value.Int = FName(sc.String);
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tokentype = ZCC_IDENTIFIER;
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break;
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case TK_NonWhitespace:
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value.Int = FName(sc.String);
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tokentype = ZCC_NWS;
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break;
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default:
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TokenMapEntry *zcctoken = TokenMap.CheckKey(sc.TokenType);
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if (zcctoken != nullptr)
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{
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tokentype = zcctoken->TokenType;
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value.Int = zcctoken->TokenName;
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}
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else
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{
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sc.ScriptMessage("Unexpected token %s.\n", sc.TokenName(sc.TokenType).GetChars());
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goto parse_end;
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}
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break;
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}
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ZCCParse(parser, tokentype, value, &state);
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}
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parse_end:
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value.Int = -1;
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ZCCParse(parser, ZCC_EOF, value, &state);
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state.sc = nullptr;
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}
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static void DoParse(int lumpnum)
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{
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FScanner sc;
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void *parser;
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ZCCToken value;
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parser = ZCCParseAlloc(malloc);
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ZCCParseState state;
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#ifndef NDEBUG
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FILE *f = nullptr;
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const char *tracefile = Args->CheckValue("-tracefile");
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if (tracefile != nullptr)
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{
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f = fopen(tracefile, "w");
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char prompt = '\0';
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ZCCParseTrace(f, &prompt);
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}
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#endif
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sc.OpenLumpNum(lumpnum);
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auto saved = sc.SavePos();
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bool parsed = false;
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if (sc.GetToken())
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{
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if (sc.TokenType == TK_Class || sc.TokenType == TK_Enum || sc.TokenType == TK_Struct || sc.TokenType == TK_Const || sc.TokenType == TK_Native)
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{
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if (sc.CheckToken(TK_Identifier))
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{
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// This looks like an actual definition file and not a file list.
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ParseSingleFile(nullptr, lumpnum, parser, state);
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parsed = true;
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}
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}
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}
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if (!parsed)
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{
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sc.RestorePos(saved);
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// parse all files from this list in one go.
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while (sc.GetString())
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{
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FixPathSeperator(sc.String);
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if (Wads.GetLumpFile(sc.LumpNum) == 0)
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{
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int includefile = Wads.GetLumpFile(Wads.CheckNumForFullName(sc.String, true));
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if (includefile != 0)
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{
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I_FatalError("File %s is overriding core lump %s.",
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Wads.GetWadFullName(includefile), sc.String);
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}
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}
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#ifndef NDEBUG
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if (f) fprintf(f, "Starting parsing %s\n", sc.String);
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#endif
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ParseSingleFile(sc.String, 0, parser, state);
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}
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}
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value.Int = -1;
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value.SourceLoc = sc.GetMessageLine();
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ZCCParse(parser, 0, value, &state);
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ZCCParseFree(parser, free);
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// If the parser fails, there is no point starting the compiler, because it'd only flood the output with endless errors.
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if (FScriptPosition::ErrorCounter > 0)
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{
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I_Error("%d errors while parsing %s", FScriptPosition::ErrorCounter, Wads.GetLumpFullPath(lumpnum).GetChars());
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}
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#ifndef NDEBUG
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if (f != nullptr)
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{
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fclose(f);
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}
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#endif
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// Make a dump of the AST before running the compiler for diagnostic purposes.
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if (Args->CheckParm("-dumpast"))
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{
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FString ast = ZCC_PrintAST(state.TopNode);
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FString filename = Wads.GetLumpFullPath(lumpnum);
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filename.ReplaceChars(":\\/?|", '.');
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filename << ".ast";
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FILE *ff = fopen(filename, "w");
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if (ff != NULL)
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{
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fputs(ast.GetChars(), ff);
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fclose(ff);
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}
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}
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PSymbolTable symtable;
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ZCCCompiler cc(state, NULL, symtable, GlobalSymbols, lumpnum);
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cc.Compile();
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if (FScriptPosition::ErrorCounter > 0)
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{
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// Abort if the compiler produced any errors. Also do not compile further lumps, because they very likely miss some stuff.
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I_Error("%d errors, %d warnings while compiling %s", FScriptPosition::ErrorCounter, FScriptPosition::WarnCounter, Wads.GetLumpFullPath(lumpnum).GetChars());
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}
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else if (FScriptPosition::WarnCounter > 0)
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{
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// If we got warnings, but no errors, print the information but continue.
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Printf(TEXTCOLOR_ORANGE "%d warnings while compiling %s", FScriptPosition::WarnCounter, Wads.GetLumpFullPath(lumpnum).GetChars());
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}
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}
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void ParseScripts()
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{
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if (TokenMap.CountUsed() == 0)
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{
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InitTokenMap();
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}
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ZCC_InitOperators();
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ZCC_InitConversions();
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int lump, lastlump = 0;
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FScriptPosition::ResetErrorCounter();
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while ((lump = Wads.FindLump("ZSCRIPT", &lastlump)) != -1)
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{
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DoParse(lump);
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}
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}
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/*
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CCMD(parse)
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{
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if (argv.argc() == 2)
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{
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DoParse(argv[1]);
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}
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}
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*/
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static FString ZCCTokenName(int terminal)
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{
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if (terminal == ZCC_EOF)
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{
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return "end of file";
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}
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int sc_token;
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if (terminal > 0 && terminal < (int)countof(BackTokenMap))
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{
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sc_token = BackTokenMap[terminal];
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if (sc_token == 0)
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{ // This token was not initialized. Whoops!
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sc_token = -terminal;
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}
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}
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else
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{ // This should never happen.
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sc_token = -terminal;
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}
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return FScanner::TokenName(sc_token);
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}
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ZCC_TreeNode *ZCC_AST::InitNode(size_t size, EZCCTreeNodeType type, ZCC_TreeNode *basis)
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{
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ZCC_TreeNode *node = (ZCC_TreeNode *)SyntaxArena.Alloc(size);
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node->SiblingNext = node;
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node->SiblingPrev = node;
|
|
node->NodeType = type;
|
|
if (basis != NULL)
|
|
{
|
|
node->SourceName = basis->SourceName;
|
|
node->SourceLump = basis->SourceLump;
|
|
node->SourceLoc = basis->SourceLoc;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
ZCC_TreeNode *ZCCParseState::InitNode(size_t size, EZCCTreeNodeType type)
|
|
{
|
|
ZCC_TreeNode *node = ZCC_AST::InitNode(size, type, NULL);
|
|
node->SourceName = Strings.Alloc(sc->ScriptName);
|
|
node->SourceLump = sc->LumpNum;
|
|
return node;
|
|
}
|
|
|
|
// Appends a sibling to this node's sibling list.
|
|
void AppendTreeNodeSibling(ZCC_TreeNode *thisnode, ZCC_TreeNode *sibling)
|
|
{
|
|
if (thisnode == nullptr)
|
|
{
|
|
// Some bad syntax can actually get here, so better abort so that the user can see the error which caused this.
|
|
I_FatalError("Internal script compiler error. Execution aborted.");
|
|
}
|
|
if (sibling == nullptr)
|
|
{
|
|
return;
|
|
}
|
|
|
|
ZCC_TreeNode *&SiblingPrev = thisnode->SiblingPrev;
|
|
ZCC_TreeNode *&SiblingNext = thisnode->SiblingNext;
|
|
|
|
// Check integrity of our sibling list.
|
|
assert(SiblingPrev->SiblingNext == thisnode);
|
|
assert(SiblingNext->SiblingPrev == thisnode);
|
|
|
|
// Check integrity of new sibling list.
|
|
assert(sibling->SiblingPrev->SiblingNext == sibling);
|
|
assert(sibling->SiblingNext->SiblingPrev == sibling);
|
|
|
|
ZCC_TreeNode *siblingend = sibling->SiblingPrev;
|
|
SiblingPrev->SiblingNext = sibling;
|
|
sibling->SiblingPrev = SiblingPrev;
|
|
SiblingPrev = siblingend;
|
|
siblingend->SiblingNext = thisnode;
|
|
}
|