union.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 115 行

/****************************************************************************
*
*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*  ========================================================================
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*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
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//
// UNION        : UNION/MAP statement processor
//

#include "ftnstd.h"
#include "global.h"
#include "errcod.h"
#include "segsw.h"
#include "recog.h"
#include "insert.h"
#include "utility.h"

extern  void            STUnion(void);
extern  void            STMap(void);
extern  void            CSExtn(void);

extern  char            *StmtKeywords[];


void    CpUnion( void ) {
//=================

// Process UNION statement.
//      UNION

    CSExtn();
    SgmtSw |= SG_DEFINING_UNION;
    EndOfStatement();
    STUnion();
}


void    CpEndUnion( void ) {
//====================

// Process ENDUNION statement.
//      ENDUNION

    CSExtn();
    if( !( SgmtSw & SG_DEFINING_STRUCTURE ) ) {
        StmtPtrErr( SP_UNMATCHED, StmtKeywords[ PR_UNION ] );
    }
    SgmtSw &= ~SG_DEFINING_UNION;
    EndOfStatement();
}


void    CpMap( void ) {
//===============

// Process MAP statement.
//      MAP

    CSExtn();
    SgmtSw |= SG_DEFINING_MAP;
    EndOfStatement();
    STMap();
}


void    CpEndMap( void ) {
//====================

// Process ENDMAP statement.
//      ENDMAP

    CSExtn();
    if( !( SgmtSw & SG_DEFINING_MAP ) ) {
        StmtPtrErr( SP_UNMATCHED, StmtKeywords[ PR_MAP ] );
    }
    SgmtSw &= ~SG_DEFINING_MAP;
    EndOfStatement();
}


void    EndOfStatement( void ) {
//========================

    ReqNOpn();
    AdvanceITPtr();
    ReqEOS();
}