101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/****************************************************************
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* *
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* Copyright 2006, 2009 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 "gtm_string.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 "advancewindow.h"
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#include "gtm_utf8.h"
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#include "fnpc.h"
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GBLREF char window_token;
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GBLREF boolean_t gtm_utf8_mode;
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GBLREF boolean_t badchar_inhibit;
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int f_piece(oprtype *a, opctype op)
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{
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mval *delim_mval;
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triple *delimiter, *first, *last, *r;
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oprtype x;
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delimfmt unichar;
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error_def(ERR_COMMA);
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r = maketriple(op);
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if (!strexpr(&(r->operand[0])))
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return FALSE;
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if (window_token != TK_COMMA)
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{
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stx_error(ERR_COMMA);
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return FALSE;
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}
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advancewindow();
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delimiter = newtriple(OC_PARAMETER);
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r->operand[1] = put_tref(delimiter);
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first = newtriple(OC_PARAMETER);
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delimiter->operand[1] = put_tref(first);
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if (!strexpr(&x))
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return FALSE;
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if (window_token != TK_COMMA)
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first->operand[0] = put_ilit(1);
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else
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{
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advancewindow();
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if (!intexpr(&(first->operand[0])))
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return FALSE;
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}
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assert(x.oprclass == TRIP_REF);
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if (window_token != TK_COMMA && x.oprval.tref->opcode == OC_LIT &&
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(1 == ((gtm_utf8_mode && OC_FNZPIECE != op) ? MV_FORCE_LEN(&x.oprval.tref->operand[0].oprval.mlit->v) :
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x.oprval.tref->operand[0].oprval.mlit->v.str.len)))
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{ /* Potential shortcut to op_fnzp1 or op_fnp1. Make some further checks */
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delim_mval = &x.oprval.tref->operand[0].oprval.mlit->v;
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/* Both valid chars of char_len 1 and invalid chars of byte length 1 get the fast path */
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unichar.unichar_val = 0;
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if (!gtm_utf8_mode || OC_FNZPIECE == op)
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{ /* Single byte delimiter */
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r->opcode = OC_FNZP1;
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unichar.unibytes_val[0] = *delim_mval->str.addr;
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} else
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{ /* Potentially multiple bytes in one int */
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r->opcode = OC_FNP1;
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assert(SIZEOF(int) >= delim_mval->str.len);
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memcpy(unichar.unibytes_val, delim_mval->str.addr, delim_mval->str.len);
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}
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delimiter->operand[0] = put_ilit(unichar.unichar_val);
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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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/* Fall into here if (1) have multi-char delimiter or (2) an invalid utf8 sequence of bytelen > 1
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This generates the longer form call to op_fnpiece/op_fnzpiece.
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*/
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delimiter->operand[0] = x;
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last = newtriple(OC_PARAMETER);
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first->operand[1] = put_tref(last);
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if (window_token != TK_COMMA)
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last->operand[0] = first->operand[0];
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else
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{
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advancewindow();
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if (!intexpr(&(last->operand[0])))
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return FALSE;
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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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