*/ REBSER *Collect_Block_Words(REBVAL *block, REBVAL *prior, REBCNT modes)
/*
** Collect words from a prior block and new block.
**
***********************************************************************/
{
REBSER *series;
REBCNT start;
REBINT *binds = WORDS_HEAD(Bind_Table); // GC safe to do here
CHECK_BIND_TABLE;
if (SERIES_TAIL(BUF_WORDS)) Crash(RP_WORD_LIST); // still in use
if (prior)
Collect_Simple_Words(prior, BIND_ALL);
start = SERIES_TAIL(BUF_WORDS);
Collect_Simple_Words(block, modes);
// Reset word markers:
for (block = BLK_HEAD(BUF_WORDS); NOT_END(block); block++)
binds[VAL_WORD_CANON(block)] = 0;
series = Copy_Series_Part(BUF_WORDS, start, SERIES_TAIL(BUF_WORDS)-start);
RESET_TAIL(BUF_WORDS); // allow reuse
CHECK_BIND_TABLE;
return series;
}
x*/ void Modify_StringX(REBCNT action, REBVAL *string, REBVAL *arg)
/*
** Actions: INSERT, APPEND, CHANGE
**
** string [string!] {Series at point to insert}
** value [any-type!] {The value to insert}
** /part {Limits to a given length or position.}
** length [number! series! pair!]
** /only {Inserts a series as a series.}
** /dup {Duplicates the insert a specified number of times.}
** count [number! pair!]
**
***********************************************************************/
{
REBSER *series = VAL_SERIES(string);
REBCNT index = VAL_INDEX(string);
REBCNT tail = VAL_TAIL(string);
REBINT rlen; // length to be removed
REBINT ilen = 1; // length to be inserted
REBINT cnt = 1; // DUP count
REBINT size;
REBVAL *val;
REBSER *arg_ser = 0; // argument series
// Length of target (may modify index): (arg can be anything)
rlen = Partial1((action == A_CHANGE) ? string : arg, DS_ARG(AN_LENGTH));
index = VAL_INDEX(string);
if (action == A_APPEND || index > tail) index = tail;
// If the arg is not a string, then we need to create a string:
if (IS_BINARY(string)) {
if (IS_INTEGER(arg)) {
if (VAL_INT64(arg) > 255 || VAL_INT64(arg) < 0)
Trap_Range(arg);
arg_ser = Make_Binary(1);
Append_Byte(arg_ser, VAL_CHAR(arg)); // check for size!!!
}
else if (!ANY_BINSTR(arg)) Trap_Arg(arg);
}
else if (IS_BLOCK(arg)) {
// MOVE!
REB_MOLD mo = {0};
arg_ser = mo.series = Make_Unicode(VAL_BLK_LEN(arg) * 10); // GC!?
for (val = VAL_BLK_DATA(arg); NOT_END(val); val++)
Mold_Value(&mo, val, 0);
}
else if (IS_CHAR(arg)) {
// Optimize this case !!!
arg_ser = Make_Unicode(1);
Append_Byte(arg_ser, VAL_CHAR(arg));
}
else if (!ANY_STR(arg) || IS_TAG(arg)) {
arg_ser = Copy_Form_Value(arg, 0);
}
if (arg_ser) Set_String(arg, arg_ser);
else arg_ser = VAL_SERIES(arg);
// Length of insertion:
ilen = (action != A_CHANGE && DS_REF(AN_PART)) ? rlen : VAL_LEN(arg);
// If Source == Destination we need to prevent possible conflicts.
// Clone the argument just to be safe.
// (Note: It may be possible to optimize special cases like append !!)
if (series == VAL_SERIES(arg)) {
arg_ser = Copy_Series_Part(arg_ser, VAL_INDEX(arg), ilen); // GC!?
}
// Get /DUP count:
if (DS_REF(AN_DUP)) {
cnt = Int32(DS_ARG(AN_COUNT));
if (cnt <= 0) return; // no changes
}
// Total to insert:
size = cnt * ilen;
if (action != A_CHANGE) {
// Always expand series for INSERT and APPEND actions:
Expand_Series(series, index, size);
} else {
if (size > rlen)
Expand_Series(series, index, size-rlen);
else if (size < rlen && DS_REF(AN_PART))
Remove_Series(series, index, rlen-size);
else if (size + index > tail) {
EXPAND_SERIES_TAIL(series, size - (tail - index));
}
}
// For dup count:
for (; cnt > 0; cnt--) {
Insert_String(series, index, arg_ser, VAL_INDEX(arg), ilen, TRUE);
index += ilen;
}
TERM_SERIES(series);
VAL_INDEX(string) = (action == A_APPEND) ? 0 : index;
}
*/ REBCNT Modify_String(REBCNT action, REBSER *dst_ser, REBCNT dst_idx, const REBVAL *src_val, REBCNT flags, REBINT dst_len, REBINT dups)
/*
** action: INSERT, APPEND, CHANGE
**
** dst_ser: target
** dst_idx: position
** src_val: source
** flags: AN_PART
** dst_len: length to remove
** dups: dup count
**
** return: new dst_idx
**
***********************************************************************/
{
REBSER *src_ser = 0;
REBCNT src_idx = 0;
REBCNT src_len;
REBCNT tail = SERIES_TAIL(dst_ser);
REBINT size; // total to insert
if (dups < 0) return (action == A_APPEND) ? 0 : dst_idx;
if (action == A_APPEND || dst_idx > tail) dst_idx = tail;
// If the src_val is not a string, then we need to create a string:
if (GET_FLAG(flags, AN_SERIES)) { // used to indicate a BINARY series
if (IS_INTEGER(src_val)) {
src_ser = Append_Byte(0, Int8u(src_val)); // creates a binary
}
else if (IS_BLOCK(src_val)) {
src_ser = Join_Binary(src_val); // NOTE: it's the shared FORM buffer!
}
else if (IS_CHAR(src_val)) {
src_ser = Make_Binary(6); // (I hate unicode)
src_ser->tail = Encode_UTF8_Char(BIN_HEAD(src_ser), VAL_CHAR(src_val));
}
else if (!ANY_BINSTR(src_val)) Trap_Arg_DEAD_END(src_val);
}
else if (IS_CHAR(src_val)) {
src_ser = Append_Byte(0, VAL_CHAR(src_val)); // unicode ok too
}
else if (IS_BLOCK(src_val)) {
src_ser = Form_Tight_Block(src_val);
}
else if (!ANY_STR(src_val) || IS_TAG(src_val)) {
src_ser = Copy_Form_Value(src_val, 0);
}
// Use either new src or the one that was passed:
if (src_ser) {
src_len = SERIES_TAIL(src_ser);
}
else {
src_ser = VAL_SERIES(src_val);
src_idx = VAL_INDEX(src_val);
src_len = VAL_LEN(src_val);
}
// For INSERT or APPEND with /PART use the dst_len not src_len:
if (action != A_CHANGE && GET_FLAG(flags, AN_PART)) src_len = dst_len;
// If Source == Destination we need to prevent possible conflicts.
// Clone the argument just to be safe.
// (Note: It may be possible to optimize special cases like append !!)
if (dst_ser == src_ser) {
src_ser = Copy_Series_Part(src_ser, src_idx, src_len);
src_idx = 0;
}
// Total to insert:
size = dups * src_len;
if (action != A_CHANGE) {
// Always expand dst_ser for INSERT and APPEND actions:
Expand_Series(dst_ser, dst_idx, size);
} else {
if (size > dst_len)
Expand_Series(dst_ser, dst_idx, size - dst_len);
else if (size < dst_len && GET_FLAG(flags, AN_PART))
Remove_Series(dst_ser, dst_idx, dst_len - size);
else if (size + dst_idx > tail) {
EXPAND_SERIES_TAIL(dst_ser, size - (tail - dst_idx));
}
}
// For dup count:
for (; dups > 0; dups--) {
Insert_String(dst_ser, dst_idx, src_ser, src_idx, src_len, TRUE);
dst_idx += src_len;
}
TERM_SERIES(dst_ser);
return (action == A_APPEND) ? 0 : dst_idx;
}
