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t-word.c
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t-word.c
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/***********************************************************************
**
** REBOL [R3] Language Interpreter and Run-time Environment
**
** Copyright 2012 REBOL Technologies
** REBOL is a trademark of REBOL Technologies
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
**
************************************************************************
**
** Module: t-word.c
** Summary: word related datatypes
** Section: datatypes
** Author: Carl Sassenrath
** Notes:
**
***********************************************************************/
#include "sys-core.h"
#ifdef not_used
/***********************************************************************
**
** REBFLG MT_Word(REBVAL *out, REBVAL *data, REBCNT type)
**
***********************************************************************/
{
if (!IS_WORD(data)) return FALSE;
*out = *data;
VAL_SET(out, type);
return TRUE;
}
#endif
/***********************************************************************
**
*/ REBINT CT_Word(REBVAL *a, REBVAL *b, REBINT mode)
/*
***********************************************************************/
{
REBINT e;
REBINT diff;
if (mode >= 0) {
e = VAL_WORD_CANON(a) == VAL_WORD_CANON(b);
if (mode == 1) e &= VAL_WORD_INDEX(a) == VAL_WORD_INDEX(b)
&& VAL_WORD_FRAME(a) == VAL_WORD_FRAME(b);
else if (mode >= 2) {
e = (VAL_WORD_SYM(a) == VAL_WORD_SYM(b) &&
VAL_WORD_INDEX(a) == VAL_WORD_INDEX(b) &&
VAL_WORD_FRAME(a) == VAL_WORD_FRAME(b));
}
} else {
diff = Compare_Word(a, b, FALSE);
if (mode == -1) e = diff >= 0;
else e = diff > 0;
}
return e;
}
/***********************************************************************
**
*/ REBTYPE(Word)
/*
***********************************************************************/
{
REBVAL *val = D_ARG(1);
REBVAL *arg = D_ARG(2);
REBCNT type = VAL_TYPE(val);
REBINT diff;
REBCNT sym;
switch (action) {
case A_LENGTHQ:
diff = LEN_BYTES(Get_Sym_Name(VAL_WORD_SYM(val)));
if (type != REB_WORD) diff++;
DS_Ret_Int(diff);
break;
case A_MAKE:
case A_TO:
// TO word! ...
if (type == REB_DATATYPE) type = (REBCNT)VAL_DATATYPE(val);
if (ANY_WORD(arg)) {
VAL_SET(arg, type);
return R_ARG2;
}
else {
if (IS_STRING(arg)) {
REBYTE *bp;
REBCNT len;
// Set sym. Rest is set below.
bp = Qualify_String(arg, 255, &len, TRUE);
if (type == REB_ISSUE) sym = Scan_Issue(bp, len);
else sym = Scan_Word(bp, len);
if (!sym) Trap1(RE_BAD_CHAR, arg);
}
else if (IS_CHAR(arg)) {
REBYTE buf[8];
sym = Encode_UTF8_Char(&buf[0], VAL_CHAR(arg)); //returns length
sym = Scan_Word(&buf[0], sym);
if (!sym) Trap1(RE_BAD_CHAR, arg);
}
else if (IS_DATATYPE(arg)) {
sym = VAL_DATATYPE(arg)+1;
}
else if (IS_LOGIC(arg)) {
sym = IS_TRUE(arg) ? SYM_TRUE : SYM_FALSE;
}
else Trap_Types(RE_EXPECT_VAL, REB_WORD, VAL_TYPE(arg));
Set_Word(D_RET, sym, 0, 0);
VAL_SET(D_RET, type);
}
break;
default:
Trap_Action(type, action);
}
return R_RET;
}