102 lines
2.8 KiB
C
102 lines
2.8 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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/*
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* Description:
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* This is called, if MERGE parameter has any indirection.
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* Parameters:
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* glvn_mv: the (mval*) for one of the arguments of merge.
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* arg1_or_arg2: Is it left hand side or right hand side
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* MARG1_LCL | MARG1_GBL => glvn1
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* MARG2_LCL | MARG2_GBL => glvn2
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* Notes:
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* Unlike op_indset which is called once for a SET, this is called twice for MERGE command,
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* if the command parameter is @glvn1=@glvn2. It will be called once with glvn1 and once with glvn2
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*/
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#include "mdef.h"
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#include "toktyp.h"
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#include "compiler.h"
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#include "opcode.h"
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#include "indir_enum.h"
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#include "merge_def.h"
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#include "op.h"
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#include "mvalconv.h"
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#include "cache.h"
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#include "hashtab_objcode.h"
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#include "stringpool.h"
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GBLREF char window_token;
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void op_indmerge(mval *glvn_mv, mval *arg1_or_arg2)
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{
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error_def(ERR_INDMAXNEST);
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error_def(ERR_VAREXPECTED);
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bool stat;
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boolean_t leftarg;
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mstr object, *obj;
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oprtype mopr;
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triple *ref;
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mval arg_copy;
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icode_str indir_src;
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assert (((MARG1_LCL | MARG1_GBL) == MV_FORCE_INT(arg1_or_arg2)) ||
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((MARG2_LCL | MARG2_GBL) == MV_FORCE_INT(arg1_or_arg2)));
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leftarg = ((MARG1_LCL | MARG1_GBL) == MV_FORCE_INT(arg1_or_arg2)) ? TRUE:FALSE;
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MV_FORCE_STR(glvn_mv);
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indir_src.str = glvn_mv->str;
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indir_src.code = leftarg ? indir_merge1:indir_merge2;
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if (NULL == (obj = cache_get(&indir_src)))
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{
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comp_init(&glvn_mv->str);
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switch (window_token)
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{
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case TK_IDENT:
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if (stat = lvn(&mopr, leftarg ? OC_PUTINDX : OC_M_SRCHINDX, 0))
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{
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ref = newtriple(OC_MERGE_LVARG);
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ref->operand[0] = put_ilit(leftarg ? MARG1_LCL : MARG2_LCL);
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ref->operand[1] = mopr;
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}
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break;
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case TK_CIRCUMFLEX:
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if (stat = gvn())
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{
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ref = newtriple(OC_MERGE_GVARG);
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ref->operand[0] = put_ilit(leftarg ? MARG1_GBL : MARG2_GBL);
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}
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break;
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case TK_ATSIGN:
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if (stat = indirection(&mopr))
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{
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ref = maketriple(OC_INDMERGE);
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arg_copy = *arg1_or_arg2;
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if (MV_IS_STRING(&arg_copy))
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s2pool(&arg_copy.str);
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ref->operand[0] = put_lit(&arg_copy);
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ref->operand[1] = mopr;
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ins_triple(ref);
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}
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break;
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default:
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stx_error(ERR_VAREXPECTED);
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break;
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}
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if (comp_fini(stat, &object, OC_RET, 0, glvn_mv->str.len))
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{
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indir_src.str.addr = glvn_mv->str.addr;
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cache_put(&indir_src, &object);
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comp_indr(&object);
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}
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} else
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comp_indr(obj);
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}
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