118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2010 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 "toktyp.h"
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#include "indir_enum.h"
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#include "mdq.h"
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#include "mmemory.h"
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#include "advancewindow.h"
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GBLREF char window_token;
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GBLREF triple *curtchain;
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int f_get(oprtype *a, opctype op)
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{
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triple tmpchain, *oldchain, *r, *triptr;
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oprtype result, *result_ptr;
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error_def(ERR_VAREXPECTED);
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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result_ptr = (oprtype *)mcalloc(SIZEOF(oprtype));
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result = put_indr(result_ptr);
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r = maketriple(op);
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switch (window_token)
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{
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case TK_IDENT:
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if (!lvn(&r->operand[0], OC_SRCHINDX, 0))
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return FALSE;
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if (window_token != TK_COMMA)
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{
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ins_triple(r);
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*a = put_tref(r);
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return TRUE;
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}
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r->opcode = OC_FNGET2;
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r->operand[1] = result;
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break;
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case TK_CIRCUMFLEX:
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if (!gvn())
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return FALSE;
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if (window_token == TK_COMMA)
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{ /* 2-argument $GET with global-variable as first argument. In this case generate the following
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* sequence of opcodes. OC_FNGVGET1, opcodes-to-evaluate-second-argument-expression, OC_FNGVGET2
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*/
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r->opcode = OC_FNGVGET1;
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ins_triple(r);
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triptr = r;
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/* Prepare triple for OC_FNGVGET2 */
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r = maketriple(op);
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r->opcode = OC_FNGVGET2;
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r->operand[0] = put_tref(triptr);
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r->operand[1] = result;
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} else
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{
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r->opcode = OC_FNGVGET;
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r->operand[0] = result;
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}
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break;
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case TK_ATSIGN:
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r->opcode = OC_INDGET;
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if (TREF(shift_side_effects))
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{
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dqinit(&tmpchain, exorder);
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oldchain = setcurtchain(&tmpchain);
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if (!indirection(&r->operand[0]))
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{
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setcurtchain(oldchain);
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return FALSE;
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}
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r->operand[1] = result;
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if (window_token == TK_COMMA)
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{
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advancewindow();
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if (!expr(result_ptr))
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return FALSE;
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} else
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*result_ptr = put_str(0, 0);
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ins_triple(r);
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newtriple(OC_GVSAVTARG);
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setcurtchain(oldchain);
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dqadd(TREF(expr_start), &tmpchain, exorder);
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TREF(expr_start) = tmpchain.exorder.bl;
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triptr = newtriple(OC_GVRECTARG);
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triptr->operand[0] = put_tref(TREF(expr_start));
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*a = put_tref(r);
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return TRUE;
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}
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if (!indirection(&r->operand[0]))
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return FALSE;
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r->operand[1] = result;
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break;
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default:
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stx_error(ERR_VAREXPECTED);
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return FALSE;
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}
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if (window_token == TK_COMMA)
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{
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advancewindow();
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if (!expr(result_ptr))
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return FALSE;
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} else
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*result_ptr = put_str(0, 0);
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ins_triple(r);
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*a = put_tref(r);
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return TRUE;
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}
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