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vim9instr.c
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vim9instr.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* vim9instr.c: Dealing with instructions of a compiled function
*/
#define USING_FLOAT_STUFF
#include "vim.h"
#if defined(FEAT_EVAL) || defined(PROTO)
// When not generating protos this is included in proto.h
#ifdef PROTO
# include "vim9.h"
#endif
/////////////////////////////////////////////////////////////////////
// Following generate_ functions expect the caller to call ga_grow().
#define RETURN_NULL_IF_SKIP(cctx) if (cctx->ctx_skip == SKIP_YES) return NULL
#define RETURN_OK_IF_SKIP(cctx) if (cctx->ctx_skip == SKIP_YES) return OK
/*
* Generate an instruction without arguments.
* Returns a pointer to the new instruction, NULL if failed.
*/
isn_T *
generate_instr(cctx_T *cctx, isntype_T isn_type)
{
garray_T *instr = &cctx->ctx_instr;
isn_T *isn;
RETURN_NULL_IF_SKIP(cctx);
if (GA_GROW_FAILS(instr, 1))
return NULL;
isn = ((isn_T *)instr->ga_data) + instr->ga_len;
isn->isn_type = isn_type;
isn->isn_lnum = cctx->ctx_lnum + 1;
++instr->ga_len;
return isn;
}
/*
* Generate an instruction without arguments.
* "drop" will be removed from the stack.
* Returns a pointer to the new instruction, NULL if failed.
*/
isn_T *
generate_instr_drop(cctx_T *cctx, isntype_T isn_type, int drop)
{
RETURN_NULL_IF_SKIP(cctx);
cctx->ctx_type_stack.ga_len -= drop;
return generate_instr(cctx, isn_type);
}
/*
* Generate instruction "isn_type" and put "type" on the type stack,
* use "decl_type" for the declared type.
*/
static isn_T *
generate_instr_type2(
cctx_T *cctx,
isntype_T isn_type,
type_T *type,
type_T *decl_type)
{
isn_T *isn;
if ((isn = generate_instr(cctx, isn_type)) == NULL)
return NULL;
if (push_type_stack2(cctx, type == NULL ? &t_any : type,
decl_type == NULL ? &t_any : decl_type) == FAIL)
return NULL;
return isn;
}
/*
* Generate instruction "isn_type" and put "type" on the type stack.
* Uses "any" for the declared type, which works for constants. For declared
* variables use generate_instr_type2().
*/
isn_T *
generate_instr_type(cctx_T *cctx, isntype_T isn_type, type_T *type)
{
return generate_instr_type2(cctx, isn_type, type, &t_any);
}
/*
* Generate an ISN_DEBUG instruction.
*/
isn_T *
generate_instr_debug(cctx_T *cctx)
{
isn_T *isn;
dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data)
+ cctx->ctx_ufunc->uf_dfunc_idx;
if ((isn = generate_instr(cctx, ISN_DEBUG)) == NULL)
return NULL;
isn->isn_arg.debug.dbg_var_names_len = dfunc->df_var_names.ga_len;
isn->isn_arg.debug.dbg_break_lnum = cctx->ctx_prev_lnum;
return isn;
}
/*
* If type at "offset" isn't already VAR_STRING then generate ISN_2STRING.
* But only for simple types.
* When "tolerant" is TRUE convert most types to string, e.g. a List.
*/
int
may_generate_2STRING(int offset, int tolerant, cctx_T *cctx)
{
isn_T *isn;
isntype_T isntype = ISN_2STRING;
type_T *type;
RETURN_OK_IF_SKIP(cctx);
type = get_type_on_stack(cctx, -1 - offset);
switch (type->tt_type)
{
// nothing to be done
case VAR_STRING: return OK;
// conversion possible
case VAR_SPECIAL:
case VAR_BOOL:
case VAR_NUMBER:
case VAR_FLOAT:
break;
// conversion possible (with runtime check)
case VAR_ANY:
case VAR_UNKNOWN:
isntype = ISN_2STRING_ANY;
break;
// conversion possible when tolerant
case VAR_LIST:
if (tolerant)
{
isntype = ISN_2STRING_ANY;
break;
}
// FALLTHROUGH
// conversion not possible
case VAR_VOID:
case VAR_BLOB:
case VAR_FUNC:
case VAR_PARTIAL:
case VAR_DICT:
case VAR_JOB:
case VAR_CHANNEL:
case VAR_INSTR:
to_string_error(type->tt_type);
return FAIL;
}
set_type_on_stack(cctx, &t_string, -1 - offset);
if ((isn = generate_instr(cctx, isntype)) == NULL)
return FAIL;
isn->isn_arg.tostring.offset = offset;
isn->isn_arg.tostring.tolerant = tolerant;
return OK;
}
static int
check_number_or_float(vartype_T type1, vartype_T type2, char_u *op)
{
if (!((type1 == VAR_NUMBER || type1 == VAR_FLOAT
|| type1 == VAR_ANY || type1 == VAR_UNKNOWN)
&& (type2 == VAR_NUMBER || type2 == VAR_FLOAT
|| type2 == VAR_ANY || type2 == VAR_UNKNOWN)))
{
if (*op == '+')
emsg(_(e_wrong_argument_type_for_plus));
else
semsg(_(e_char_requires_number_or_float_arguments), *op);
return FAIL;
}
return OK;
}
/*
* Generate instruction for "+". For a list this creates a new list.
*/
int
generate_add_instr(
cctx_T *cctx,
vartype_T vartype,
type_T *type1,
type_T *type2,
exprtype_T expr_type)
{
isn_T *isn = generate_instr_drop(cctx,
vartype == VAR_NUMBER ? ISN_OPNR
: vartype == VAR_LIST ? ISN_ADDLIST
: vartype == VAR_BLOB ? ISN_ADDBLOB
#ifdef FEAT_FLOAT
: vartype == VAR_FLOAT ? ISN_OPFLOAT
#endif
: ISN_OPANY, 1);
if (vartype != VAR_LIST && vartype != VAR_BLOB
&& type1->tt_type != VAR_ANY
&& type1->tt_type != VAR_UNKNOWN
&& type2->tt_type != VAR_ANY
&& type2->tt_type != VAR_UNKNOWN
&& check_number_or_float(
type1->tt_type, type2->tt_type, (char_u *)"+") == FAIL)
return FAIL;
if (isn != NULL)
{
if (isn->isn_type == ISN_ADDLIST)
isn->isn_arg.op.op_type = expr_type;
else
isn->isn_arg.op.op_type = EXPR_ADD;
}
// When concatenating two lists with different member types the member type
// becomes "any".
if (vartype == VAR_LIST
&& type1->tt_type == VAR_LIST && type2->tt_type == VAR_LIST
&& type1->tt_member != type2->tt_member)
set_type_on_stack(cctx, &t_list_any, 0);
return isn == NULL ? FAIL : OK;
}
/*
* Get the type to use for an instruction for an operation on "type1" and
* "type2". If they are matching use a type-specific instruction. Otherwise
* fall back to runtime type checking.
*/
vartype_T
operator_type(type_T *type1, type_T *type2)
{
if (type1->tt_type == type2->tt_type
&& (type1->tt_type == VAR_NUMBER
|| type1->tt_type == VAR_LIST
#ifdef FEAT_FLOAT
|| type1->tt_type == VAR_FLOAT
#endif
|| type1->tt_type == VAR_BLOB))
return type1->tt_type;
return VAR_ANY;
}
/*
* Generate an instruction with two arguments. The instruction depends on the
* type of the arguments.
*/
int
generate_two_op(cctx_T *cctx, char_u *op)
{
type_T *type1;
type_T *type2;
vartype_T vartype;
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
// Get the known type of the two items on the stack.
type1 = get_type_on_stack(cctx, 1);
type2 = get_type_on_stack(cctx, 0);
vartype = operator_type(type1, type2);
switch (*op)
{
case '+':
if (generate_add_instr(cctx, vartype, type1, type2,
EXPR_COPY) == FAIL)
return FAIL;
break;
case '-':
case '*':
case '/': if (check_number_or_float(type1->tt_type, type2->tt_type,
op) == FAIL)
return FAIL;
if (vartype == VAR_NUMBER)
isn = generate_instr_drop(cctx, ISN_OPNR, 1);
#ifdef FEAT_FLOAT
else if (vartype == VAR_FLOAT)
isn = generate_instr_drop(cctx, ISN_OPFLOAT, 1);
#endif
else
isn = generate_instr_drop(cctx, ISN_OPANY, 1);
if (isn != NULL)
isn->isn_arg.op.op_type = *op == '*'
? EXPR_MULT : *op == '/'? EXPR_DIV : EXPR_SUB;
break;
case '%': if ((type1->tt_type != VAR_ANY
&& type1->tt_type != VAR_UNKNOWN
&& type1->tt_type != VAR_NUMBER)
|| (type2->tt_type != VAR_ANY
&& type2->tt_type != VAR_UNKNOWN
&& type2->tt_type != VAR_NUMBER))
{
emsg(_(e_percent_requires_number_arguments));
return FAIL;
}
isn = generate_instr_drop(cctx,
vartype == VAR_NUMBER ? ISN_OPNR : ISN_OPANY, 1);
if (isn != NULL)
isn->isn_arg.op.op_type = EXPR_REM;
break;
}
// correct type of result
if (vartype == VAR_ANY)
{
type_T *type = &t_any;
#ifdef FEAT_FLOAT
// float+number and number+float results in float
if ((type1->tt_type == VAR_NUMBER || type1->tt_type == VAR_FLOAT)
&& (type2->tt_type == VAR_NUMBER || type2->tt_type == VAR_FLOAT))
type = &t_float;
#endif
set_type_on_stack(cctx, type, 0);
}
return OK;
}
/*
* Get the instruction to use for comparing two values with specified types.
* Either "tv1" and "tv2" are passed or "type1" and "type2".
* Return ISN_DROP when failed.
*/
static isntype_T
get_compare_isn(
exprtype_T exprtype,
typval_T *tv1,
typval_T *tv2,
type_T *type1,
type_T *type2)
{
isntype_T isntype = ISN_DROP;
vartype_T vartype1 = tv1 != NULL ? tv1->v_type : type1->tt_type;
vartype_T vartype2 = tv2 != NULL ? tv2->v_type : type2->tt_type;
if (vartype1 == VAR_UNKNOWN)
vartype1 = VAR_ANY;
if (vartype2 == VAR_UNKNOWN)
vartype2 = VAR_ANY;
if (vartype1 == vartype2)
{
switch (vartype1)
{
case VAR_BOOL: isntype = ISN_COMPAREBOOL; break;
case VAR_SPECIAL: isntype = ISN_COMPARESPECIAL; break;
case VAR_NUMBER: isntype = ISN_COMPARENR; break;
case VAR_FLOAT: isntype = ISN_COMPAREFLOAT; break;
case VAR_STRING: isntype = ISN_COMPARESTRING; break;
case VAR_BLOB: isntype = ISN_COMPAREBLOB; break;
case VAR_LIST: isntype = ISN_COMPARELIST; break;
case VAR_DICT: isntype = ISN_COMPAREDICT; break;
case VAR_FUNC: isntype = ISN_COMPAREFUNC; break;
default: isntype = ISN_COMPAREANY; break;
}
}
else if (vartype1 == VAR_ANY || vartype2 == VAR_ANY
|| ((vartype1 == VAR_NUMBER || vartype1 == VAR_FLOAT)
&& (vartype2 == VAR_NUMBER || vartype2 == VAR_FLOAT))
|| (vartype1 == VAR_FUNC && vartype2 == VAR_PARTIAL)
|| (vartype1 == VAR_PARTIAL && vartype2 == VAR_FUNC))
isntype = ISN_COMPAREANY;
else if (vartype1 == VAR_SPECIAL || vartype2 == VAR_SPECIAL)
{
if ((vartype1 == VAR_SPECIAL
&& (tv1 != NULL ? tv1->vval.v_number == VVAL_NONE
: type1 == &t_none)
&& vartype2 != VAR_STRING)
|| (vartype2 == VAR_SPECIAL
&& (tv2 != NULL ? tv2->vval.v_number == VVAL_NONE
: type2 == &t_none)
&& vartype1 != VAR_STRING))
{
semsg(_(e_cannot_compare_str_with_str),
vartype_name(vartype1), vartype_name(vartype2));
return ISN_DROP;
}
// although comparing null with number, float or bool is not useful, we
// allow it
isntype = ISN_COMPARENULL;
}
if ((exprtype == EXPR_IS || exprtype == EXPR_ISNOT)
&& (isntype == ISN_COMPAREBOOL
|| isntype == ISN_COMPARESPECIAL
|| isntype == ISN_COMPARENR
|| isntype == ISN_COMPAREFLOAT))
{
semsg(_(e_cannot_use_str_with_str),
exprtype == EXPR_IS ? "is" : "isnot" , vartype_name(vartype1));
return ISN_DROP;
}
if (isntype == ISN_DROP
|| ((exprtype != EXPR_EQUAL && exprtype != EXPR_NEQUAL
&& (vartype1 == VAR_BOOL || vartype1 == VAR_SPECIAL
|| vartype2 == VAR_BOOL || vartype2 == VAR_SPECIAL)))
|| ((exprtype != EXPR_EQUAL && exprtype != EXPR_NEQUAL
&& exprtype != EXPR_IS && exprtype != EXPR_ISNOT
&& (vartype1 == VAR_BLOB || vartype2 == VAR_BLOB
|| vartype1 == VAR_LIST || vartype2 == VAR_LIST))))
{
semsg(_(e_cannot_compare_str_with_str),
vartype_name(vartype1), vartype_name(vartype2));
return ISN_DROP;
}
return isntype;
}
int
check_compare_types(exprtype_T type, typval_T *tv1, typval_T *tv2)
{
if (get_compare_isn(type, tv1, tv2, NULL, NULL) == ISN_DROP)
return FAIL;
return OK;
}
/*
* Generate an ISN_COMPARE* instruction with a boolean result.
*/
int
generate_COMPARE(cctx_T *cctx, exprtype_T exprtype, int ic)
{
isntype_T isntype;
isn_T *isn;
garray_T *stack = &cctx->ctx_type_stack;
RETURN_OK_IF_SKIP(cctx);
// Get the known type of the two items on the stack. If they are matching
// use a type-specific instruction. Otherwise fall back to runtime type
// checking.
isntype = get_compare_isn(exprtype, NULL, NULL,
get_type_on_stack(cctx, 1), get_type_on_stack(cctx, 0));
if (isntype == ISN_DROP)
return FAIL;
if ((isn = generate_instr(cctx, isntype)) == NULL)
return FAIL;
isn->isn_arg.op.op_type = exprtype;
isn->isn_arg.op.op_ic = ic;
// takes two arguments, puts one bool back
if (stack->ga_len >= 2)
{
--stack->ga_len;
set_type_on_stack(cctx, &t_bool, 0);
}
return OK;
}
/*
* Generate an ISN_2BOOL instruction.
* "offset" is the offset in the type stack.
*/
int
generate_2BOOL(cctx_T *cctx, int invert, int offset)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_2BOOL)) == NULL)
return FAIL;
isn->isn_arg.tobool.invert = invert;
isn->isn_arg.tobool.offset = offset;
// type becomes bool
set_type_on_stack(cctx, &t_bool, -1 - offset);
return OK;
}
/*
* Generate an ISN_COND2BOOL instruction.
*/
int
generate_COND2BOOL(cctx_T *cctx)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_COND2BOOL)) == NULL)
return FAIL;
// type becomes bool
set_type_on_stack(cctx, &t_bool, 0);
return OK;
}
int
generate_TYPECHECK(
cctx_T *cctx,
type_T *expected,
int offset,
int argidx)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_CHECKTYPE)) == NULL)
return FAIL;
isn->isn_arg.type.ct_type = alloc_type(expected);
isn->isn_arg.type.ct_off = (int8_T)offset;
isn->isn_arg.type.ct_arg_idx = (int8_T)argidx;
// type becomes expected
set_type_on_stack(cctx, expected, -1 - offset);
return OK;
}
int
generate_SETTYPE(
cctx_T *cctx,
type_T *expected)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_SETTYPE)) == NULL)
return FAIL;
isn->isn_arg.type.ct_type = alloc_type(expected);
return OK;
}
/*
* Generate a PUSH instruction for "tv".
* "tv" will be consumed or cleared.
* Nothing happens if "tv" is NULL or of type VAR_UNKNOWN;
*/
int
generate_tv_PUSH(cctx_T *cctx, typval_T *tv)
{
if (tv != NULL)
{
switch (tv->v_type)
{
case VAR_UNKNOWN:
break;
case VAR_BOOL:
generate_PUSHBOOL(cctx, tv->vval.v_number);
break;
case VAR_SPECIAL:
generate_PUSHSPEC(cctx, tv->vval.v_number);
break;
case VAR_NUMBER:
generate_PUSHNR(cctx, tv->vval.v_number);
break;
#ifdef FEAT_FLOAT
case VAR_FLOAT:
generate_PUSHF(cctx, tv->vval.v_float);
break;
#endif
case VAR_BLOB:
generate_PUSHBLOB(cctx, tv->vval.v_blob);
tv->vval.v_blob = NULL;
break;
case VAR_LIST:
if (tv->vval.v_list != NULL)
iemsg("non-empty list constant not supported");
generate_NEWLIST(cctx, 0);
break;
case VAR_DICT:
if (tv->vval.v_dict != NULL)
iemsg("non-empty dict constant not supported");
generate_NEWDICT(cctx, 0);
break;
#ifdef FEAT_JOB_CHANNEL
case VAR_JOB:
if (tv->vval.v_job != NULL)
iemsg("non-null job constant not supported");
generate_PUSHJOB(cctx);
break;
case VAR_CHANNEL:
if (tv->vval.v_channel != NULL)
iemsg("non-null channel constant not supported");
generate_PUSHCHANNEL(cctx);
break;
#endif
case VAR_FUNC:
if (tv->vval.v_string != NULL)
iemsg("non-null function constant not supported");
generate_PUSHFUNC(cctx, NULL, &t_func_unknown);
break;
case VAR_PARTIAL:
if (tv->vval.v_partial != NULL)
iemsg("non-null partial constant not supported");
if (generate_instr_type(cctx, ISN_NEWPARTIAL, &t_func_unknown)
== NULL)
return FAIL;
break;
case VAR_STRING:
generate_PUSHS(cctx, &tv->vval.v_string);
tv->vval.v_string = NULL;
break;
default:
iemsg("constant type not supported");
clear_tv(tv);
return FAIL;
}
tv->v_type = VAR_UNKNOWN;
}
return OK;
}
/*
* Generate an ISN_PUSHNR instruction.
*/
int
generate_PUSHNR(cctx_T *cctx, varnumber_T number)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHNR, &t_number)) == NULL)
return FAIL;
isn->isn_arg.number = number;
if (number == 0 || number == 1)
// A 0 or 1 number can also be used as a bool.
set_type_on_stack(cctx, &t_number_bool, 0);
return OK;
}
/*
* Generate an ISN_PUSHBOOL instruction.
*/
int
generate_PUSHBOOL(cctx_T *cctx, varnumber_T number)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHBOOL, &t_bool)) == NULL)
return FAIL;
isn->isn_arg.number = number;
return OK;
}
/*
* Generate an ISN_PUSHSPEC instruction.
*/
int
generate_PUSHSPEC(cctx_T *cctx, varnumber_T number)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHSPEC,
number == VVAL_NULL ? &t_null : &t_none)) == NULL)
return FAIL;
isn->isn_arg.number = number;
return OK;
}
#if defined(FEAT_FLOAT) || defined(PROTO)
/*
* Generate an ISN_PUSHF instruction.
*/
int
generate_PUSHF(cctx_T *cctx, float_T fnumber)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHF, &t_float)) == NULL)
return FAIL;
isn->isn_arg.fnumber = fnumber;
return OK;
}
#endif
/*
* Generate an ISN_PUSHS instruction.
* Consumes "*str". When freed *str is set to NULL, unless "str" is NULL.
*/
int
generate_PUSHS(cctx_T *cctx, char_u **str)
{
isn_T *isn;
if (cctx->ctx_skip == SKIP_YES)
{
if (str != NULL)
VIM_CLEAR(*str);
return OK;
}
if ((isn = generate_instr_type(cctx, ISN_PUSHS, &t_string)) == NULL)
{
if (str != NULL)
VIM_CLEAR(*str);
return FAIL;
}
isn->isn_arg.string = str == NULL ? NULL : *str;
return OK;
}
/*
* Generate an ISN_PUSHCHANNEL instruction. Channel is always NULL.
*/
int
generate_PUSHCHANNEL(cctx_T *cctx)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHCHANNEL, &t_channel)) == NULL)
return FAIL;
return OK;
}
/*
* Generate an ISN_PUSHJOB instruction. Job is always NULL.
*/
int
generate_PUSHJOB(cctx_T *cctx)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHJOB, &t_job)) == NULL)
return FAIL;
return OK;
}
/*
* Generate an ISN_PUSHBLOB instruction.
* Consumes "blob".
*/
int
generate_PUSHBLOB(cctx_T *cctx, blob_T *blob)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHBLOB, &t_blob)) == NULL)
return FAIL;
isn->isn_arg.blob = blob;
return OK;
}
/*
* Generate an ISN_PUSHFUNC instruction with name "name".
*/
int
generate_PUSHFUNC(cctx_T *cctx, char_u *name, type_T *type)
{
isn_T *isn;
char_u *funcname;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_PUSHFUNC, type)) == NULL)
return FAIL;
if (name == NULL)
funcname = NULL;
else if (*name == K_SPECIAL // script-local
|| vim_strchr(name, AUTOLOAD_CHAR) != NULL) // autoload
funcname = vim_strsave(name);
else
{
funcname = alloc(STRLEN(name) + 3);
if (funcname != NULL)
{
STRCPY(funcname, "g:");
STRCPY(funcname + 2, name);
}
}
isn->isn_arg.string = funcname;
return OK;
}
/*
* Generate an ISN_AUTOLOAD instruction.
*/
int
generate_AUTOLOAD(cctx_T *cctx, char_u *name, type_T *type)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type(cctx, ISN_AUTOLOAD, type)) == NULL)
return FAIL;
isn->isn_arg.string = vim_strsave(name);
if (isn->isn_arg.string == NULL)
return FAIL;
return OK;
}
/*
* Generate an ISN_GETITEM instruction with "index".
* "with_op" is TRUE for "+=" and other operators, the stack has the current
* value below the list with values.
*/
int
generate_GETITEM(cctx_T *cctx, int index, int with_op)
{
isn_T *isn;
type_T *type = get_type_on_stack(cctx, with_op ? 1 : 0);
type_T *item_type = &t_any;
RETURN_OK_IF_SKIP(cctx);
if (type->tt_type != VAR_LIST)
{
// cannot happen, caller has checked the type
emsg(_(e_list_required));
return FAIL;
}
item_type = type->tt_member;
if ((isn = generate_instr(cctx, ISN_GETITEM)) == NULL)
return FAIL;
isn->isn_arg.getitem.gi_index = index;
isn->isn_arg.getitem.gi_with_op = with_op;
// add the item type to the type stack
return push_type_stack(cctx, item_type);
}
/*
* Generate an ISN_SLICE instruction with "count".
*/
int
generate_SLICE(cctx_T *cctx, int count)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_SLICE)) == NULL)
return FAIL;
isn->isn_arg.number = count;
return OK;
}
/*
* Generate an ISN_CHECKLEN instruction with "min_len".
*/
int
generate_CHECKLEN(cctx_T *cctx, int min_len, int more_OK)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_CHECKLEN)) == NULL)
return FAIL;
isn->isn_arg.checklen.cl_min_len = min_len;
isn->isn_arg.checklen.cl_more_OK = more_OK;
return OK;
}
/*
* Generate an ISN_STORE instruction.
*/
int
generate_STORE(cctx_T *cctx, isntype_T isn_type, int idx, char_u *name)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_drop(cctx, isn_type, 1)) == NULL)
return FAIL;
if (name != NULL)
isn->isn_arg.string = vim_strsave(name);
else
isn->isn_arg.number = idx;
return OK;
}
/*
* Generate an ISN_STOREOUTER instruction.
*/
static int
generate_STOREOUTER(cctx_T *cctx, int idx, int level)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_drop(cctx, ISN_STOREOUTER, 1)) == NULL)
return FAIL;
isn->isn_arg.outer.outer_idx = idx;
isn->isn_arg.outer.outer_depth = level;
return OK;
}
/*
* Generate an ISN_STORENR instruction (short for ISN_PUSHNR + ISN_STORE)
*/
int
generate_STORENR(cctx_T *cctx, int idx, varnumber_T value)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_STORENR)) == NULL)
return FAIL;
isn->isn_arg.storenr.stnr_idx = idx;
isn->isn_arg.storenr.stnr_val = value;
return OK;
}
/*
* Generate an ISN_STOREOPT or ISN_STOREFUNCOPT instruction
*/
static int
generate_STOREOPT(
cctx_T *cctx,
isntype_T isn_type,
char_u *name,
int opt_flags)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_drop(cctx, isn_type, 1)) == NULL)
return FAIL;
isn->isn_arg.storeopt.so_name = vim_strsave(name);
isn->isn_arg.storeopt.so_flags = opt_flags;
return OK;
}
/*
* Generate an ISN_LOAD or similar instruction.
*/
int
generate_LOAD(
cctx_T *cctx,
isntype_T isn_type,
int idx,
char_u *name,
type_T *type)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type2(cctx, isn_type, type, type)) == NULL)
return FAIL;
if (name != NULL)
isn->isn_arg.string = vim_strsave(name);
else
isn->isn_arg.number = idx;
return OK;
}
/*
* Generate an ISN_LOADOUTER instruction
*/
int
generate_LOADOUTER(
cctx_T *cctx,
int idx,
int nesting,
type_T *type)
{
isn_T *isn;
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr_type2(cctx, ISN_LOADOUTER, type, type)) == NULL)
return FAIL;
isn->isn_arg.outer.outer_idx = idx;
isn->isn_arg.outer.outer_depth = nesting;
return OK;
}
/*