95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2011 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "compiler.h"
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#include "opcode.h"
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#include "zstep.h"
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#include "toktyp.h"
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#include "nametabtyp.h"
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#include "mdq.h"
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#include "advancewindow.h"
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#include "cmd.h"
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#include "namelook.h"
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GBLREF char window_token;
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GBLREF mval window_mval;
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GBLREF mident window_ident;
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GBLREF char director_token;
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GBLREF short int source_column;
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error_def(ERR_INVZSTEP);
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error_def(ERR_ZSTEPARG);
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static readonly nametabent zstep_names[] =
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{
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{ 1, "I"}, { 4, "INTO"}
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,{ 2,"OU" }, { 5,"OUTOF" }
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,{ 2,"OV" }, { 4,"OVER" }
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};
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static readonly unsigned char zstep_index[27] =
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2
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,2, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6
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,6, 6, 6
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};
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static readonly char zstep_type[]={ ZSTEP_INTO, ZSTEP_INTO,
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ZSTEP_OUTOF, ZSTEP_OUTOF,
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ZSTEP_OVER, ZSTEP_OVER
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};
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int m_zstep(void)
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{
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triple *head;
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char type;
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int x;
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oprtype action;
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opctype op;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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assert((SIZEOF(zstep_names) / SIZEOF(nametabent)) == zstep_index[26]);
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op = OC_ZSTEP;
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switch(window_token)
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{
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case TK_SPACE:
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case TK_EOL:
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type = ZSTEP_OVER;
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break;
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case TK_IDENT:
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if (0 > (x = namelook(zstep_index, zstep_names, window_ident.addr, window_ident.len))) /* assignment */
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{
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stx_error(ERR_INVZSTEP);
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return FALSE;
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}
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type = zstep_type[x];
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advancewindow();
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break;
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default:
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stx_error(ERR_ZSTEPARG);
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return FALSE;
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break;
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}
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if (TK_COLON == window_token)
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{ advancewindow();
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if (!expr(&action))
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return FALSE;
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op = OC_ZSTEPACT;
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}
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head = maketriple(op);
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head->operand[0] = put_ilit(type);
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if (op == OC_ZSTEPACT)
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head->operand[1] = action;
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ins_triple(head);
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return TRUE;
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}
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