RXIEXT int RX_Call(int cmd, RXIFRM *frm, REBCEC *ctx) {
REBYTE *str;
switch (cmd) {
case 0:
RXA_INT64(frm, 1) = 0;
RXA_TYPE(frm, 1) = RXT_INTEGER;
break;
case 1:
break; // same as arg
case 2:
RXA_INT64(frm, 1) = RXA_INT64(frm, 2);
RXA_TYPE(frm, 1) = RXA_TYPE(frm, 2);
break;
case 3:
RXA_WORD(frm, 1) = RL_MAP_WORD("system"); //?? is frame always long enough??
RXA_TYPE(frm, 1) = RXT_WORD;
break;
case 4:
RL_GET_STRING(RXA_SERIES(frm, 1), 0, (void*)(&str)); // latin-1 only for test
RXA_WORD(frm, 1) = RL_MAP_WORD(str);
RXA_TYPE(frm, 1) = RXT_WORD;
break;
case 5:
RXA_TYPE(frm, 1) = RL_GET_FIELD(RXA_OBJECT(frm, 1), RXA_WORD(frm, 2), &RXA_ARG(frm, 1));
break;
case 6:
RXA_TYPE(frm, 1) = Test_Sync_Callback(RXA_OBJECT(frm, 1), RXA_WORD(frm, 2), &RXA_ARG(frm, 1));
break;
case 7:
RXA_LOGIC(frm, 1) = Test_Async_Callback(RXA_OBJECT(frm, 1), RXA_WORD(frm, 2));
RXA_TYPE(frm, 1) = RXT_LOGIC;
break;
case 8:
RXA_TYPE(frm, 1) = RXT_IMAGE;
RXA_SERIES(frm, 1) = RL_MAKE_IMAGE(2, 3);
break;
case 9:
{
REBCEC cec;
cec.envr = 0;
cec.block = RXA_SERIES(frm, 1);
cec.index = 0;
RL_DO_COMMANDS(RXA_SERIES(frm, 1), 0, &cec);
}
return RXR_UNSET;
case 10:
RXA_INT64(frm, 1) = (i64)(ctx ? ctx->index : -1);
RXA_TYPE(frm, 1) = RXT_INTEGER;
break;
default:
return RXR_NO_COMMAND;
}
return RXR_VALUE;
}
*/ void Do_Commands(REBSER *cmds, void *context)
/*
** Evaluate a block of commands as efficiently as possible.
** The arguments to each command must already be reduced or
** use only variable lookup.
**
** Returns the last evaluated value, if provided.
**
***********************************************************************/
{
REBVAL *blk;
REBCNT index = 0;
REBVAL *set_word = 0;
REBVAL *cmd_word;
REBSER *words;
REBVAL *args;
REBVAL *val;
REBVAL *func;
RXIFRM frm; // args stored here
REBCNT n;
REBEXT *ext;
REBCEC *ctx;
if ((ctx = context)) ctx->block = cmds;
blk = BLK_HEAD(cmds);
while (NOT_END(blk)) {
// var: command result
if IS_SET_WORD(blk) {
set_word = blk++;
index++;
};
// get command function
if (IS_WORD(cmd_word = blk)) {
// Optimized var fetch:
n = VAL_WORD_INDEX(blk);
if (n > 0) func = FRM_VALUES(VAL_WORD_FRAME(blk)) + n;
else func = Get_Var(blk); // fallback
} else func = blk;
if (!IS_COMMAND(func)) Trap2(RE_EXPECT_VAL, Get_Type_Word(REB_COMMAND), blk);
// Advance to next value
blk++;
if (ctx) ctx->index = index; // position of function
index++;
// get command arguments and body
words = VAL_FUNC_WORDS(func);
RXA_COUNT(&frm) = SERIES_TAIL(VAL_FUNC_ARGS(func))-1; // not self
// collect each argument (arg list already validated on MAKE)
n = 0;
for (args = BLK_SKIP(words, 1); NOT_END(args); args++) {
//Debug_Type(args);
val = blk++;
index++;
if (IS_END(val)) Trap2(RE_NO_ARG, cmd_word, args);
//Debug_Type(val);
// actual arg is a word, lookup?
if (VAL_TYPE(val) >= REB_WORD) {
if (IS_WORD(val)) {
if (IS_WORD(args)) val = Get_Var(val);
}
else if (IS_PATH(val)) {
if (IS_WORD(args)) val = Get_Any_Var(val); // volatile value!
}
else if (IS_PAREN(val)) {
val = Do_Blk(VAL_SERIES(val), 0); // volatile value!
}
// all others fall through
}
// check datatype
if (!TYPE_CHECK(args, VAL_TYPE(val)))
Trap3(RE_EXPECT_ARG, cmd_word, args, Of_Type(val));
// put arg into command frame
n++;
RXA_TYPE(&frm, n) = Reb_To_RXT[VAL_TYPE(val)];
frm.args[n] = Value_To_RXI(val);
}
// Call the command (also supports different extension modules):
func = BLK_HEAD(VAL_FUNC_BODY(func));
n = (REBCNT)VAL_INT64(func + 1);
ext = &Ext_List[VAL_I32(VAL_OBJ_VALUE(func, 1))]; // Handler
n = ext->call(n, &frm, context);
val = DS_RETURN;
switch (n) {
case RXR_VALUE:
RXI_To_Value(val, frm.args[1], RXA_TYPE(&frm, 1));
break;
case RXR_BLOCK:
RXI_To_Block(&frm, val);
break;
case RXR_UNSET:
SET_UNSET(val);
break;
case RXR_NONE:
SET_NONE(val);
break;
case RXR_TRUE:
SET_TRUE(val);
break;
case RXR_FALSE:
SET_FALSE(val);
break;
case RXR_ERROR:
default:
SET_UNSET(val);
}
if (set_word) {
Set_Var(set_word, val);
set_word = 0;
}
}
}
