406 lines
17 KiB
C
406 lines
17 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* Header file for the Harbour Compiler
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*
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* Copyright 1999 Antonio Linares <alinares@fivetech.com>
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* www - http://www.harbour-project.org
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*
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* This program 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 2 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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#ifndef HB_COMPILER_H_
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#define HB_COMPILER_H_
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <malloc.h> /* required for allocating and freeing memory */
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#include <ctype.h>
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#include <time.h>
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#include "hbsetup.h"
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#include "extend.h"
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#include "pcode.h" /* pcode values */
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#include "hberrors.h"
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#include "hbpp.h"
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#include "hbver.h"
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/* compiler related declarations */
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typedef struct /* #include support */
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{
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FILE * handle; /* handle of the opened file */
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void * pBuffer; /* buffer used by yacc */
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char * szFileName; /* name of the file */
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void * pPrev; /* pointer to the previous opened file */
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void * pNext; /* pointer to the next opened file */
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int iLine; /* currently processed line number */
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} _FILE, * PFILE; /* structure to hold an opened PRG or CH */
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typedef struct
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{
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PFILE pLast; /* pointer to the last opened file */
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int iFiles; /* number of files currently opened */
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} FILES; /* structure to control several opened PRGs and CHs */
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/* locals, static, public variables support */
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typedef struct _VAR
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{
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char * szName; /* variable name */
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char * szAlias; /* variable alias namespace */
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int iUsed; /* number of times used */
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char cType; /* optional strong typing */
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struct _VAR * pNext; /* pointer to next defined variable */
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} VAR, * PVAR;
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/* pcode chunks bytes size */
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#define PCODE_CHUNK 100
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/* structure to hold a Clipper defined function */
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typedef struct __FUNC /* functions definition support */
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{
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char * szName; /* name of a defined Clipper function */
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char cScope; /* scope of a defined Clipper function */
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BYTE bFlags; /* some flags we may need */
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USHORT wParamCount; /* number of declared parameters */
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USHORT wParamNum; /* current parameter number */
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PVAR pLocals; /* pointer to local variables list */
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PVAR pStatics; /* pointer to static variables list */
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PVAR pFields; /* pointer to fields variables list */
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PVAR pMemvars; /* pointer to memvar variables list */
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BYTE * pCode; /* pointer to a memory block where pcode is stored */
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ULONG lPCodeSize; /* total memory size for pcode */
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ULONG lPCodePos; /* actual pcode offset */
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int iStaticsBase; /* base for this function statics */
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struct __FUNC * pOwner; /* pointer to the function/procedure that owns the codeblock */
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struct __FUNC * pNext; /* pointer to the next defined function */
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} _FUNC, * PFUNCTION;
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/* structure to control all Clipper defined functions */
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typedef struct
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{
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PFUNCTION pFirst; /* pointer to the first defined funtion */
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PFUNCTION pLast; /* pointer to the last defined function */
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int iCount; /* number of defined functions */
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} FUNCTIONS;
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/* compiler symbol support structure */
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typedef struct _COMSYMBOL
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{
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char * szName; /* the name of the symbol */
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char cScope; /* the scope of the symbol */
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char cType;
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struct _COMSYMBOL * pNext; /* pointer to the next defined symbol */
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} COMSYMBOL, * PCOMSYMBOL;
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/* symbol table support structures */
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typedef struct
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{
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PCOMSYMBOL pFirst; /* pointer to the first defined symbol */
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PCOMSYMBOL pLast; /* pointer to the last defined symbol */
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int iCount; /* number of defined symbols */
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} SYMBOLS;
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typedef struct HB_EXPR_
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{
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union
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{
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char *asString; /* literal strings */
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char *asSymbol; /* variable name */
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BOOL asLogical; /* logical value */
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struct
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{
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long lVal; /* long value */
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double dVal; /* double value */
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unsigned char bDec; /* unsigned char used intentionally */
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unsigned char NumType; /* used to distinguish LONG and DOUBLE */
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} asNum;
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struct
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{
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struct HB_EXPR_ *pVar; /* macro variable */
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char * szNameExt; /* text after the macro terminator */
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} asMacro;
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struct
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{
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struct HB_EXPR_ *pExprList; /* list elements */
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struct HB_EXPR_ *pIndex; /* array index, others */
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} asList;
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struct
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{
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struct HB_EXPR_ *pAlias; /* alias expression */
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char * szVarName; /* aliased variable */
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struct HB_EXPR_ *pExpList; /* aliased expression list */
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} asAlias;
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struct
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{
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char * szFunName; /* function name */
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struct HB_EXPR_ *pParms; /* function call parameters */
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} asFunCall;
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struct
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{
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struct HB_EXPR_ *pObject; /* object */
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char * szMessage; /* message */
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struct HB_EXPR_ *pParms; /* method parameters */
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} asMessage;
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struct
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{
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struct HB_EXPR_ *pLeft; /* object */
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struct HB_EXPR_ *pRight; /* object */
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} asOperator;
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} value;
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ULONG ulLength;
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unsigned char ExprType; /* internal expression type */
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USHORT ValType; /* language level value type */
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struct HB_EXPR_ *pNext; /* next expression in the list of expressions */
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} HB_EXPR, *HB_EXPR_PTR;
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extern void * hb_xgrab( ULONG lSize ); /* allocates memory, exists on failure */
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extern void * hb_xrealloc( void * pMem, ULONG lSize ); /* reallocates memory */
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extern void hb_xfree( void * pMem ); /* frees memory */
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char * yy_strdup( char * p ); /* this will exit if there is not enough memory */
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char * yy_strupr( char * p );
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#define VS_LOCAL 1
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#define VS_STATIC 2
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#define VS_FIELD 4
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#define VS_PARAMETER 8
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#define VS_PRIVATE 64
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#define VS_PUBLIC 128
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#define VS_MEMVAR ( VS_PUBLIC | VS_PRIVATE )
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/*
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* flags for bFlags member
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*/
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#define FUN_STATEMENTS 1 /* Function have at least one executable statement */
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#define FUN_USES_STATICS 2 /* Function uses static variables */
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#define FUN_PROCEDURE 4 /* This is a procedure that shouldn't return value */
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#define FUN_BREAK_CODE 8 /* last statement breaks execution flow */
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#define FUN_USES_LOCAL_PARAMS 16 /* parameters are declared using () */
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#define FUN_WITH_RETURN 32 /* there was RETURN statement in previous line */
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void hb_compFunctionAdd( char * szFunName, HB_SYMBOLSCOPE cScope, int iType ); /* starts a new Clipper language function definition */
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PFUNCTION hb_compFunctionFind( char * szFunName ); /* locates a previously defined function */
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USHORT hb_compFunctionGetPos( char * szSymbolName ); /* returns the index + 1 of a function on the functions defined list */
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PFUNCTION hb_compFunctionKill( PFUNCTION ); /* releases all memory allocated by function and returns the next one */
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PFUNCTION hb_compFunCallAdd( char * szFuntionName );
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PFUNCTION hb_compFunCallFind( char * szFunName ); /* locates a previously defined called function */
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void hb_compFunCallCheck( char *, int );
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void hb_compVariableAdd( char * szVarName, char cType ); /* add a new param, local, static variable to a function definition or a public or private */
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PVAR hb_compVariableFind( PVAR pVars, USHORT wOrder ); /* returns a variable if defined or zero */
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PCOMSYMBOL hb_compSymbolAdd( char *, USHORT * );
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PCOMSYMBOL hb_compSymbolKill( PCOMSYMBOL ); /* releases all memory allocated by symbol and returns the next one */
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PCOMSYMBOL hb_compSymbolFind( char *, USHORT * ); /* returns a symbol pointer from the symbol table */
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PCOMSYMBOL hb_compSymbolGetPos( USHORT ); /* returns a symbol based on its index on the symbol table */
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USHORT hb_compSymbolFixPos( USHORT ); /* converts symbol's compile-time position into generation-time position */
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void hb_compGenBreak( void ); /* generate code for BREAK statement */
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void hb_compExternGen( void ); /* generates the symbols for the EXTERN names */
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void hb_compExternAdd( char * szExternName ); /* defines a new extern name */
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ULONG hb_compGenJump( LONG lOffset ); /* generates the pcode to jump to a specific offset */
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ULONG hb_compGenJumpFalse( LONG lOffset ); /* generates the pcode to jump if false */
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ULONG hb_compGenJumpTrue( LONG lOffset ); /* generates the pcode to jump if true */
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void hb_compGenJumpHere( ULONG ulOffset ); /* returns the pcode pos where to set a jump offset */
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void hb_compGenJumpThere( ULONG ulFrom, ULONG ulTo ); /* sets a jump offset */
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void hb_compLinePush( void ); /* generates the pcode with the currently compiled source code line */
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void hb_compLinePushIfDebugger( void ); /* generates the pcode with the currently compiled source code line */
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void hb_compLinePushIfInside( void ); /* generates the pcode with the currently compiled source code line */
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void hb_compGenMessage( char * szMsgName ); /* sends a message to an object */
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void hb_compGenMessageData( char * szMsg ); /* generates an underscore-symbol name for a data assignment */
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void hb_compGenPopVar( char * szVarName ); /* generates the pcode to pop a value from the virtual machine stack onto a variable */
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void hb_compGenPushDouble( double fNumber, BYTE bDec ); /* Pushes a number on the virtual machine stack */
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void hb_compGenPushFunCall( char * ); /* generates the pcode to push function's call */
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void hb_compGenPushVar( char * szVarName ); /* generates the pcode to push a variable value to the virtual machine stack */
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void hb_compGenPushVarRef( char * szVarName ); /* generates the pcode to push a variable by reference to the virtual machine stack */
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void hb_compGenPushInteger( int iNumber ); /* Pushes a integer number on the virtual machine stack */
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void hb_compGenPushLogical( int iTrueFalse ); /* pushes a logical value on the virtual machine stack */
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void hb_compGenPushLong( long lNumber ); /* Pushes a long number on the virtual machine stack */
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void hb_compGenPushNil( void ); /* Pushes nil on the virtual machine stack */
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void hb_compGenPushString( char * szText, ULONG ulLen ); /* Pushes a string on the virtual machine stack */
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void hb_compGenPushSymbol( char * szSymbolName, int iIsFunction ); /* Pushes a symbol on to the Virtual machine stack */
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void hb_compGenPushAliasedVar( char *, BOOL, char *, long );
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void hb_compGenPopAliasedVar( char *, BOOL, char *, long );
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void hb_compGenPushFunRef( char * );
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void hb_compGenPCode1( BYTE ); /* generates 1 byte of pcode */
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void hb_compGenPCode3( BYTE, BYTE, BYTE ); /* generates 3 bytes of pcode */
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void hb_compGenPCodeN( BYTE * pBuffer, ULONG ulSize ); /* copy bytes to a pcode buffer */
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/* Codeblocks */
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void hb_compCodeBlockStart( void ); /* starts a codeblock creation */
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void hb_compCodeBlockEnd( void ); /* end of codeblock creation */
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ULONG hb_compSequenceBegin( void );
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ULONG hb_compSequenceEnd( void );
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void hb_compSequenceFinish( ULONG, int );
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/* support for FIELD declaration */
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void hb_compFieldSetAlias( char *, int );
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int hb_compFieldsCount( void );
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/* Static variables */
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void hb_compStaticDefStart( void );
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void hb_compStaticDefEnd( void );
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HB_EXPR_PTR hb_compErrorStatic( char *, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compErrorType( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compErrorIndex( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compErrorSyntax( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compErrorLValue( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compErrorBound( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compErrorAlias( HB_EXPR_PTR );
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void hb_compErrorDuplVar( char * );
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HB_EXPR_PTR hb_compWarnMeaningless( HB_EXPR_PTR );
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void hb_compGenError( char* _szErrors[], char cPrefix, int iError, char * szError1, char * szError2 );
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void hb_compGenWarning( char* _szWarnings[], char cPrefix, int iWarning, char * szWarning1, char * szWarning2);
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/* variable used by compiler
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*/
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extern int hb_comp_iLine;
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extern FUNCTIONS hb_comp_functions;
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extern FUNCTIONS hb_comp_funcalls;
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extern SYMBOLS hb_comp_symbols;
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extern PATHNAMES * hb_comp_pIncludePath;
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extern PFUNCTION hb_comp_pInitFunc;
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extern PHB_FNAME hb_comp_pFileName;
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extern BOOL hb_comp_bPPO;
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extern FILE * hb_comp_yyppo;
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extern BOOL hb_comp_bStartProc;
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extern BOOL hb_comp_bLineNumbers;
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extern BOOL hb_comp_bQuiet;
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extern BOOL hb_comp_bRestrictSymbolLength;
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extern BOOL hb_comp_bShortCuts;
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extern int hb_comp_iWarnings;
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extern BOOL hb_comp_bAnyWarning;
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extern BOOL hb_comp_bAutoMemvarAssume;
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extern BOOL hb_comp_bForceMemvars;
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extern BOOL hb_comp_bDebugInfo;
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extern char hb_comp_szPrefix[ 20 ];
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extern BOOL hb_comp_bGenCVerbose;
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extern int hb_comp_iExitLevel;
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extern int hb_comp_iFunctionCnt;
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extern char hb_comp_cVarType;
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extern int hb_comp_iVarScope;
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extern BOOL hb_comp_bDontGenLineNum;
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extern FILES hb_comp_files;
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extern int hb_comp_iStaticCnt;
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extern int hb_comp_iErrorCount;
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extern USHORT hb_comp_wSeqCounter;
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extern USHORT hb_comp_wForCounter;
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extern USHORT hb_comp_wIfCounter;
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extern USHORT hb_comp_wWhileCounter;
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extern USHORT hb_comp_wCaseCounter;
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extern char * hb_comp_szCErrors[];
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extern char * hb_comp_szCWarnings[];
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HB_EXPR_PTR hb_compExprNewEmpty( void );
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HB_EXPR_PTR hb_compExprNewNil( void );
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HB_EXPR_PTR hb_compExprNewDouble( double, unsigned char );
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HB_EXPR_PTR hb_compExprNewLong( LONG );
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HB_EXPR_PTR hb_compExprNewString( char * );
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HB_EXPR_PTR hb_compExprNewLogical( int );
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HB_EXPR_PTR hb_compExprNewSelf( void );
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HB_EXPR_PTR hb_compExprNewCodeBlock( void );
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HB_EXPR_PTR hb_compExprNewArray( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewArrayAt( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewVar( char * );
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HB_EXPR_PTR hb_compExprNewAliasVar( HB_EXPR_PTR, char * );
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HB_EXPR_PTR hb_compExprNewAliasExpr( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewSymbol( char * );
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HB_EXPR_PTR hb_compExprNewEQ( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewNE( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewLT( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewLE( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewGT( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewGE( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewIN( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPlus( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewMinus( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewMult( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewDiv( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewMod( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPower( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewAssign( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewEqual( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPlusEq( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewMinusEq( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewMultEq( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewDivEq( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewModEq( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewExpEq( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPostInc( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPostDec( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPreInc( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewPreDec( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewAnd( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewOr( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewNot( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewNegate( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewMacro( HB_EXPR_PTR, char * );
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HB_EXPR_PTR hb_compExprNewVarRef( char * );
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HB_EXPR_PTR hb_compExprNewFunRef( char * );
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HB_EXPR_PTR hb_compExprNewCodeblockExpr( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewFunCall( char *, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewFunCallArg( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewSend( HB_EXPR_PTR, char * );
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HB_EXPR_PTR hb_compExprNewMethodCall( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprSetOperand( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewList( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewArgList( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprAddListExpr( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprNewIIF( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprReduce( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprAssign( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprEqual( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprAssignStatic( HB_EXPR_PTR, HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprGenPop( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprGenPush( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprGenStatement( HB_EXPR_PTR );
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ULONG hb_compExprListLen( HB_EXPR_PTR );
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void hb_compExprDelete( HB_EXPR_PTR );
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char * hb_compExprDescription( HB_EXPR_PTR );
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HB_EXPR_PTR hb_compExprCBVarAdd( HB_EXPR_PTR, char *, BYTE );
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#endif /* HB_COMPILER_H_ */
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