csdefn.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 94 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
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*  ========================================================================
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
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****************************************************************************/


#include "symtypes.h"

typedef union cs_info {
    struct do_entry     *do_parms;      // iterative DO-loop
    struct case_entry   *cases;         // SELECT statement and computed GOTO
    sym_id              rb;             // REMOTE BLOCKs
    unsigned_32         do_term;        // for DO WHILE
} cs_info;

typedef struct csnode {
    struct csnode       *link;
    union cs_info       cs_info;
    label_id            branch;
    label_id            bottom;
    label_id            cycle;
    unsigned_16         block;
    byte                typ;
    char                label;
} csnode;

typedef union cs_label {
    sym_id              st_label;
    label_id            g_label;
} cs_label;

typedef struct case_entry {
    struct case_entry   *link;
    union cs_label      label;
    intstar4            low;
    intstar4            high;
    sym_id              sel_expr;
    TYPE                sel_type;
    bool                multi_case;
} case_entry;

typedef struct do_entry {
    sym_id              do_parm;
    unsigned_32         do_term;
    sym_id              increment;
    sym_id              iteration;
    intstar4            incr_value;
} do_entry;

enum {
    CS_EMPTY_LIST,
    CS_IF,
    CS_ELSEIF,
    CS_ELSE,
    CS_GUESS,
    CS_ADMIT,
    CS_SELECT,
    CS_CASE,
    CS_OTHERWISE,
    CS_ATEND,
    CS_REMOTEBLOCK,
    CS_LOOP,
    CS_WHILE,
    CS_DO,
    CS_COMPUTED_GOTO,
    CS_DO_WHILE
};