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harbour-core/harbour/include/hbexprop.h
Ryszard Glab 49d728084c 2006-03-09 16:30 UTC+0100 Ryszard Glab <rglab//imid.med.pl> 
* include/hbapi.h
  * include/hbexpra.c
  * include/hbexprb.c
  * include/hbexprop.h
    * modified to support strings with embeded LF/CR characters

  * source/common/hbstr.c
  * source/rtl/strings.c
    * added hb_strRemEscSeq() function that removes C-like Esc
      sequences (\n \t \r \b currently)

  * source/compiler/cmdcheck.c
    * added new command line switch
      -r=<max_recursive_preprocessor_passes>
      with defaults equal to -r=1024

  * include/hbpp.h
  * source/compiler/harbour.l
  * source/compiler/harbour.y
  * source/macro/macro.y
  * source/pp/ppcomp.c
  * source/pp/ppcore.c
  * source/pp/pplib.c
  * source/pp/pptable.c
  * source/pp/pragma.c
    * fixed compilation of #command ( => (,7
      (loops in #define or #command are trapped now)
    * fixed compilation of \[ and \] in command/translate
    * modified TEXT/ENDTEXT to use '#pragma __text'
    + added #pragma __stream and #pragma __cstream
      (examples later)
2006-03-09 15:22:16 +00:00

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/*
* $Id$
*/
/*
* Harbour Project source code:
* Header file for the Harbour Compiler
*
* Copyright 1999 Ryszard Glab
* www - http://www.harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#ifndef HB_EXPROP_H_
#define HB_EXPROP_H_
#include "hbapi.h"
HB_EXTERN_BEGIN
/* value types seen at language level
*/
#define HB_EV_UNKNOWN 0
#define HB_EV_NIL 1
#define HB_EV_NUMERIC 2
#define HB_EV_STRING 4
#define HB_EV_CODEBLOCK 8
#define HB_EV_LOGICAL 16
#define HB_EV_OBJECT 32
#define HB_EV_ARRAY 64
#define HB_EV_SYMBOL 128
#define HB_EV_VARREF 256
#define HB_EV_FUNREF 512
#define HB_EV_DATE 1024
/* messages sent to expressions
*/
typedef enum
{
HB_EA_REDUCE = 0, /* reduce the expression into optimized one */
HB_EA_ARRAY_AT, /* check if the expession can be used as array */
HB_EA_ARRAY_INDEX, /* check if the expession can be used as index */
HB_EA_LVALUE, /* check if the expression can be used as lvalue (left side of an assigment) */
HB_EA_PUSH_PCODE, /* generate the pcodes to push the value of expression */
HB_EA_POP_PCODE, /* generate the pcodes to pop the value of expression */
HB_EA_PUSH_POP, /* generate the pcodes to push and pop the expression */
HB_EA_STATEMENT, /* generate the pcodes for a statement */
HB_EA_DELETE /* delete components of the expression */
} HB_EXPR_MESSAGE;
/* additional definitions used to distinguish numeric expressions
*/
#define HB_ET_LONG 1
#define HB_ET_DOUBLE 2
/* additional definitions used to distinguish macro expressions
*/
#define HB_ET_MACRO_VAR 0 /* &variable */
#define HB_ET_MACRO_SYMBOL 1 /* &fimcall() */
#define HB_ET_MACRO_ALIASED 2 /* &alias->&variable */
#define HB_ET_MACRO_EXPR 4 /* &( expr ) */
#define HB_ET_MACRO_ARGLIST 8 /* &variable used as a function call argument */
#define HB_ET_MACRO_LIST 16 /* &variable used as in literal arrays or parentesised expressions. */
#define HB_ET_MACRO_INDEX 32 /* &variable used as arrays index. */
#define HB_ET_MACRO_PARE 64 /* &variable used as arrays index. */
#define HB_ET_MACRO_REFER 128 /* &macro used in @ (pass by reference) */
/* types of expressions
* NOTE: the order of these definition is important - change it carefully
* All types <= HB_ET_FUNREF are constant values
* All types <= HB_ET_VARIABLE are a simple values
* All types > HB_ET_VARIABLE are operators
*/
typedef enum
{
HB_ET_NONE = 0,
HB_ET_NIL,
HB_ET_NUMERIC,
HB_ET_DATE,
HB_ET_STRING,
HB_ET_CODEBLOCK,
HB_ET_LOGICAL,
HB_ET_SELF,
HB_ET_ARRAY,
HB_ET_VARREF,
HB_ET_REFERENCE,
HB_ET_FUNREF,
HB_ET_IIF,
HB_ET_LIST,
HB_ET_ARGLIST,
HB_ET_ARRAYAT,
HB_ET_MACRO,
HB_ET_FUNCALL,
HB_ET_ALIASVAR,
HB_ET_ALIASEXPR,
HB_ET_SEND,
HB_ET_FUNNAME,
HB_ET_ALIAS,
HB_ET_RTVAR, /* PRIVATE or PUBLIC declaration of variable */
HB_ET_VARIABLE,
HB_EO_POSTINC, /* post-operators -> lowest precedence */
HB_EO_POSTDEC,
HB_EO_ASSIGN, /* assigments */
HB_EO_PLUSEQ,
HB_EO_MINUSEQ,
HB_EO_MULTEQ,
HB_EO_DIVEQ,
HB_EO_MODEQ,
HB_EO_EXPEQ,
HB_EO_OR, /* logical operators */
HB_EO_AND,
HB_EO_NOT,
HB_EO_EQUAL, /* relational operators */
HB_EO_EQ,
HB_EO_LT,
HB_EO_GT,
HB_EO_LE,
HB_EO_GE,
HB_EO_NE,
HB_EO_IN,
HB_EO_PLUS, /* addition */
HB_EO_MINUS,
HB_EO_MULT, /* multiple */
HB_EO_DIV,
HB_EO_MOD,
HB_EO_POWER,
HB_EO_NEGATE, /* sign operator */
HB_EO_PREINC,
HB_EO_PREDEC /* pre-operators -> the highest precedence */
} HB_EXPR_OPERATOR;
typedef USHORT HB_EXPRTYPE;
typedef struct HB_EXPR_
{
union
{
char *asSymbol; /* variable name */
BOOL asLogical; /* logical value */
struct
{
char *string; /* literal strings */
BOOL dealloc; /* automatic deallocate on expresion deletion */
} asString;
struct
{
struct HB_EXPR_ *pMacro; /* macro variable */
char *szName; /* variable name */
} asRTVar; /* PUBLIC or PRIVATE variable declaration */
struct
{
HB_LONG lVal; /* long value */
double dVal; /* double value */
unsigned char bWidth; /* unsigned char used intentionally */
unsigned char bDec; /* unsigned char used intentionally */
unsigned char NumType; /* used to distinguish LONG and DOUBLE */
} asNum;
struct
{
unsigned char cMacroOp; /* macro operator */
unsigned char SubType; /* context in which macro is used */
char * szMacro; /* identifier after the macro operator */
struct HB_EXPR_ *pExprList; /* list elements if &(...) was used */
struct HB_EXPR_ *pFunCall; /* pointer to a function if used as function's call argument */
} asMacro;
struct
{
struct HB_EXPR_ *pExprList; /* list elements */
struct HB_EXPR_ *pIndex; /* array index, others */
} asList;
struct
{
BOOL isMacro; /* TRUE=codeblock contains macro expression */
BOOL lateEval; /* TRUE=late evaluation of macro */
char *string; /* source code of a codeblock */
struct HB_EXPR_ *pExprList; /* list elements */
HB_CBVAR_PTR pLocals; /* list of local variables */
} asCodeblock;
struct
{
struct HB_EXPR_ *pAlias; /* alias expression */
struct HB_EXPR_ *pVar; /* aliased variable or macro */
struct HB_EXPR_ *pExpList; /* aliased expression list */
} asAlias;
struct
{
struct HB_EXPR_ *pFunName; /* function name */
struct HB_EXPR_ *pParms; /* function call parameters */
} asFunCall;
struct
{
struct HB_EXPR_ *pObject; /* object */
char * szMessage; /* message */
struct HB_EXPR_ *pParms; /* method parameters */
} asMessage;
struct
{
struct HB_EXPR_ *pLeft; /* object */
struct HB_EXPR_ *pRight; /* object */
} asOperator;
struct HB_EXPR_ *asReference;
} value;
ULONG ulLength;
ULONG Counter;
HB_EXPRTYPE ExprType; /* internal expression type */
USHORT ValType; /* language level value type */
struct HB_EXPR_ *pNext; /* next expression in the list of expressions */
} HB_EXPR, *HB_EXPR_PTR;
/* Definitions of function templates used in expression's message
* handling
*/
#ifdef HB_MACRO_SUPPORT
/* Compilation for macro compiler
*/
#define HB_EXPR_FUNC( proc ) HB_EXPR_PTR proc( HB_EXPR_PTR pSelf, int iMessage, void * pMacro )
typedef HB_EXPR_FUNC( HB_EXPR_FUNC_ );
typedef HB_EXPR_FUNC_ *HB_EXPR_FUNC_PTR;
extern HB_EXPR_FUNC_PTR hb_comp_ExprTable[];
#define HB_EXPR_USE( pSelf, iMessage ) \
hb_comp_ExprTable[ (pSelf)->ExprType ]( (pSelf), (iMessage), pMacro )
typedef HB_EXPR_PTR HB_EXPR_ACTION( HB_EXPR_PTR pSelf, int iMessage, void * pMacro );
#define HB_EXPR_PCODE0( action ) action( pMacro )
#define HB_EXPR_PCODE1( action, p1 ) action( (p1), pMacro )
#define HB_EXPR_PCODE2( action, p1, p2 ) action( (p1), (p2), pMacro )
#define HB_EXPR_PCODE3( action, p1, p2, p3 ) action( (p1), (p2), (p3), pMacro )
#define HB_EXPR_PCODE4( action, p1, p2, p3, p4 ) action( (p1), (p2), (p3), (p4), pMacro )
#define HB_EXPR_GENPCODE1( action, p1 ) action( (p1), pMacro )
#define HB_EXPR_GENPCODE2( action, p1, p2, p3 ) action( (p1), (p2), pMacro )
#define HB_EXPR_GENPCODE3( action, p1, p2, p3, p4 ) action( (p1), (p2), (p3), pMacro )
#define HB_EXPR_GENPCODE4( action, p1, p2, p3, p4, p5 ) action( (p1), (p2), (p3), (p4), pMacro )
#define HB_MACRO_VARNAME pMacro
extern HB_EXPR_PTR hb_macroExprNew( void );
#else
#define HB_EXPR_FUNC( proc ) HB_EXPR_PTR proc( HB_EXPR_PTR pSelf, int iMessage )
typedef HB_EXPR_FUNC( HB_EXPR_FUNC_ );
typedef HB_EXPR_FUNC_ *HB_EXPR_FUNC_PTR;
extern HB_EXPR_FUNC_PTR hb_comp_ExprTable[];
#define HB_EXPR_USE( pSelf, iMessage ) \
hb_comp_ExprTable[ (pSelf)->ExprType ]( (pSelf), (iMessage) )
typedef HB_EXPR_PTR HB_EXPR_ACTION( HB_EXPR_PTR pSelf, int iMessage );
#define HB_EXPR_PCODE0( action ) action( )
#define HB_EXPR_PCODE1( action, p1 ) action( (p1) )
#define HB_EXPR_PCODE2( action, p1, p2 ) action( (p1), (p2) )
#define HB_EXPR_PCODE3( action, p1, p2, p3 ) action( (p1), (p2), (p3) )
#define HB_EXPR_PCODE4( action, p1, p2, p3, p4 ) action( (p1), (p2), (p3), (p4) )
#define HB_EXPR_GENPCODE1( action, p1 ) action( (p1) )
#define HB_EXPR_GENPCODE2( action, p1, p2, p3 ) action( (p1), (p2), (p3) )
#define HB_EXPR_GENPCODE3( action, p1, p2, p3, p4 ) action( (p1), (p2), (p3), (p4) )
#define HB_EXPR_GENPCODE4( action, p1, p2, p3, p4, p5 ) action( (p1), (p2), (p3), (p4), (p5) )
/* pass NULL instead of macro structure pointer */
#define HB_MACRO_DECL void *pMacro
#define HB_MACRO_PARAM NULL
#define HB_MACRO_VARNAME pMacro
#endif
HB_EXPR_PTR hb_compExprNew( HB_EXPRTYPE );
HB_EXPR_PTR hb_compExprNewEmpty( void );
HB_EXPR_PTR hb_compExprNewNil( void );
HB_EXPR_PTR hb_compExprNewDouble( double, BYTE, BYTE );
HB_EXPR_PTR hb_compExprNewLong( HB_LONG );
HB_EXPR_PTR hb_compExprNewDate( HB_LONG );
HB_EXPR_PTR hb_compExprNewString( char *, ULONG );
HB_EXPR_PTR hb_compExprNewLogical( int );
HB_EXPR_PTR hb_compExprNewSelf( void );
HB_EXPR_PTR hb_compExprNewCodeBlock( char *, BOOL, BOOL );
HB_EXPR_PTR hb_compExprNewVar( char * );
HB_EXPR_PTR hb_compExprNewAliasVar( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewAliasExpr( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewMacro( HB_EXPR_PTR, unsigned char, char * );
HB_EXPR_PTR hb_compExprNewFunName( char * );
HB_EXPR_PTR hb_compExprNewRTVar( char *, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewAlias( char * );
HB_EXPR_PTR hb_compExprNewEQ( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewNE( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewLT( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewLE( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewGT( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewGE( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewIN( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPlus( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewMinus( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewMult( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewDiv( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewMod( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPower( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewAssign( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewEqual( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPlusEq( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewMinusEq( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewMultEq( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewDivEq( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewModEq( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewExpEq( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPostInc( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPostDec( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPreInc( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewPreDec( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewAnd( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewOr( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewNot( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewNegate( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewVarRef( char * );
HB_EXPR_PTR hb_compExprNewFunRef( char * );
HB_EXPR_PTR hb_compExprNewRef( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewCodeblockExpr( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewFunCallArg( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewSend( HB_EXPR_PTR, char * );
HB_EXPR_PTR hb_compExprNewMethodCall( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewList( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewArgList( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprAddListExpr( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprAddCodeblockExpr( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewIIF( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprReduce( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprAssign( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprEqual( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprAssignStatic( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprClone( HB_EXPR_PTR pSrc );
ULONG hb_compExprListLen( HB_EXPR_PTR );
void hb_compExprClear( HB_EXPR_PTR );
char * hb_compExprDescription( HB_EXPR_PTR );
int hb_compExprType( HB_EXPR_PTR );
int hb_compExprIsInteger( HB_EXPR_PTR );
int hb_compExprIsLong( HB_EXPR_PTR );
int hb_compExprAsInteger( HB_EXPR_PTR );
int hb_compExprIsString( HB_EXPR_PTR );
int hb_compExprAsStringLen( HB_EXPR_PTR );
char *hb_compExprAsString( HB_EXPR_PTR );
char *hb_compExprAsSymbol( HB_EXPR_PTR );
void hb_compExprFree( HB_EXPR_PTR, HB_MACRO_DECL );
void hb_compExprErrorType( HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprListStrip( HB_EXPR_PTR, HB_MACRO_DECL );
void hb_compExprCBVarDel( HB_CBVAR_PTR );
HB_EXPR_PTR hb_compExprReducePlusStrings( HB_EXPR_PTR, HB_EXPR_PTR, HB_MACRO_DECL );
BOOL hb_compExprReduceAT( HB_EXPR_PTR, HB_MACRO_DECL );
BOOL hb_compExprReduceCHR( HB_EXPR_PTR, HB_MACRO_DECL );
BOOL hb_compExprReduceLEN( HB_EXPR_PTR, HB_MACRO_DECL );
BOOL hb_compExprReduceASC( HB_EXPR_PTR, HB_MACRO_DECL );
BOOL hb_compExprIsValidMacro( char *, BOOL *, HB_MACRO_DECL );
#ifdef HB_MACRO_SUPPORT
HB_EXPR_PTR hb_compExprNewArray( HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprNewArrayAt( HB_EXPR_PTR, HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprSetOperand( HB_EXPR_PTR, HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprGenPop( HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprGenPush( HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprGenStatement( HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprNewFunCall( HB_EXPR_PTR, HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprCBVarAdd( HB_EXPR_PTR, char *, HB_MACRO_DECL );
void hb_compExprDelete( HB_EXPR_PTR, HB_MACRO_DECL );
HB_EXPR_PTR hb_compExprSetGetBlock( HB_EXPR_PTR pExpr, HB_MACRO_DECL );
#else
HB_EXPR_PTR hb_compExprNewArray( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewArrayAt( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprSetOperand( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprGenPop( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprGenPush( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprGenStatement( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprNewFunCall( HB_EXPR_PTR, HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprCBVarAdd( HB_EXPR_PTR, char *, BYTE );
void hb_compExprDelete( HB_EXPR_PTR );
HB_EXPR_PTR hb_compExprSetGetBlock( HB_EXPR_PTR pExpr );
#endif
HB_EXTERN_END
#endif /* HB_EXPROP_H_ */
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