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vim9expr.c
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vim9expr.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.
*/
/*
* vim9expr.c: Dealing with compiled function expressions
*/
#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
// flag passed from compile_subscript() to compile_load_scriptvar()
static int paren_follows_after_expr = 0;
/*
* Generate code for any ppconst entries.
*/
int
generate_ppconst(cctx_T *cctx, ppconst_T *ppconst)
{
int i;
int ret = OK;
int save_skip = cctx->ctx_skip;
cctx->ctx_skip = SKIP_NOT;
for (i = 0; i < ppconst->pp_used; ++i)
if (generate_tv_PUSH(cctx, &ppconst->pp_tv[i]) == FAIL)
ret = FAIL;
ppconst->pp_used = 0;
cctx->ctx_skip = save_skip;
return ret;
}
/*
* Check that the last item of "ppconst" is a bool, if there is an item.
*/
static int
check_ppconst_bool(ppconst_T *ppconst)
{
if (ppconst->pp_used > 0)
{
typval_T *tv = &ppconst->pp_tv[ppconst->pp_used - 1];
where_T where = WHERE_INIT;
return check_typval_type(&t_bool, tv, where);
}
return OK;
}
/*
* Clear ppconst constants. Used when failing.
*/
void
clear_ppconst(ppconst_T *ppconst)
{
int i;
for (i = 0; i < ppconst->pp_used; ++i)
clear_tv(&ppconst->pp_tv[i]);
ppconst->pp_used = 0;
}
/*
* Compile getting a member from a list/dict/string/blob. Stack has the
* indexable value and the index or the two indexes of a slice.
* "keeping_dict" is used for dict[func](arg) to pass dict to func.
*/
int
compile_member(int is_slice, int *keeping_dict, cctx_T *cctx)
{
type2_T *typep;
garray_T *stack = &cctx->ctx_type_stack;
vartype_T vartype;
type_T *idxtype;
// We can index a list, dict and blob. If we don't know the type
// we can use the index value type. If we still don't know use an "ANY"
// instruction.
// TODO: what about the decl type?
typep = (((type2_T *)stack->ga_data) + stack->ga_len - (is_slice ? 3 : 2));
vartype = typep->type_curr->tt_type;
idxtype = (((type2_T *)stack->ga_data) + stack->ga_len - 1)->type_curr;
// If the index is a string, the variable must be a Dict.
if ((typep->type_curr->tt_type == VAR_ANY
|| typep->type_curr->tt_type == VAR_UNKNOWN)
&& idxtype == &t_string)
vartype = VAR_DICT;
if (vartype == VAR_STRING || vartype == VAR_LIST || vartype == VAR_BLOB)
{
if (need_type(idxtype, &t_number, FALSE,
-1, 0, cctx, FALSE, FALSE) == FAIL)
return FAIL;
if (is_slice)
{
idxtype = get_type_on_stack(cctx, 1);
if (need_type(idxtype, &t_number, FALSE,
-2, 0, cctx, FALSE, FALSE) == FAIL)
return FAIL;
}
}
if (vartype == VAR_DICT)
{
if (is_slice)
{
emsg(_(e_cannot_slice_dictionary));
return FAIL;
}
if (typep->type_curr->tt_type == VAR_DICT)
{
typep->type_curr = typep->type_curr->tt_member;
if (typep->type_curr == &t_unknown)
// empty dict was used
typep->type_curr = &t_any;
if (typep->type_decl->tt_type == VAR_DICT)
{
typep->type_decl = typep->type_decl->tt_member;
if (typep->type_decl == &t_unknown)
// empty dict was used
typep->type_decl = &t_any;
}
else
typep->type_decl = typep->type_curr;
}
else
{
if (need_type(typep->type_curr, &t_dict_any, FALSE,
-2, 0, cctx, FALSE, FALSE) == FAIL)
return FAIL;
typep->type_curr = &t_any;
typep->type_decl = &t_any;
}
if (may_generate_2STRING(-1, FALSE, cctx) == FAIL
|| generate_instr_drop(cctx, ISN_MEMBER, 1) == FAIL)
return FAIL;
if (keeping_dict != NULL)
*keeping_dict = TRUE;
}
else if (vartype == VAR_STRING)
{
typep->type_curr = &t_string;
typep->type_decl = &t_string;
if ((is_slice
? generate_instr_drop(cctx, ISN_STRSLICE, 2)
: generate_instr_drop(cctx, ISN_STRINDEX, 1)) == FAIL)
return FAIL;
}
else if (vartype == VAR_BLOB)
{
if (is_slice)
{
typep->type_curr = &t_blob;
typep->type_decl = &t_blob;
if (generate_instr_drop(cctx, ISN_BLOBSLICE, 2) == FAIL)
return FAIL;
}
else
{
typep->type_curr = &t_number;
typep->type_decl = &t_number;
if (generate_instr_drop(cctx, ISN_BLOBINDEX, 1) == FAIL)
return FAIL;
}
}
else if (vartype == VAR_LIST || typep->type_curr->tt_type == VAR_ANY
|| typep->type_curr->tt_type == VAR_UNKNOWN)
{
if (is_slice)
{
if (generate_instr_drop(cctx,
vartype == VAR_LIST ? ISN_LISTSLICE : ISN_ANYSLICE,
2) == FAIL)
return FAIL;
// a copy is made so the member type is no longer declared
if (typep->type_decl->tt_type == VAR_LIST)
typep->type_decl = &t_list_any;
// a copy is made, the composite is no longer "const"
if (typep->type_curr->tt_flags & TTFLAG_CONST)
{
type_T *type = copy_type(typep->type_curr, cctx->ctx_type_list);
if (type != typep->type_curr) // did get a copy
{
type->tt_flags &= ~(TTFLAG_CONST | TTFLAG_STATIC);
typep->type_curr = type;
}
}
}
else
{
if (typep->type_curr->tt_type == VAR_LIST)
{
typep->type_curr = typep->type_curr->tt_member;
if (typep->type_curr == &t_unknown)
// empty list was used
typep->type_curr = &t_any;
if (typep->type_decl->tt_type == VAR_LIST)
{
typep->type_decl = typep->type_decl->tt_member;
if (typep->type_decl == &t_unknown)
// empty list was used
typep->type_decl = &t_any;
}
else
typep->type_decl = typep->type_curr;
}
if (generate_instr_drop(cctx,
vartype == VAR_LIST ? ISN_LISTINDEX : ISN_ANYINDEX, 1)
== FAIL)
return FAIL;
}
}
else
{
switch (vartype)
{
case VAR_FUNC:
case VAR_PARTIAL:
emsg(_(e_cannot_index_a_funcref));
break;
case VAR_BOOL:
case VAR_SPECIAL:
case VAR_JOB:
case VAR_CHANNEL:
case VAR_INSTR:
case VAR_CLASS:
case VAR_OBJECT:
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_VOID:
emsg(_(e_cannot_index_special_variable));
break;
default:
emsg(_(e_string_list_dict_or_blob_required));
}
return FAIL;
}
return OK;
}
/*
* Compile ".member" coming after an object or class.
*/
static int
compile_class_object_index(cctx_T *cctx, char_u **arg, type_T *type)
{
if (VIM_ISWHITE((*arg)[1]))
{
semsg(_(e_no_white_space_allowed_after_str_str), ".", *arg);
return FAIL;
}
class_T *cl = (class_T *)type->tt_member;
int is_super = type->tt_flags & TTFLAG_SUPER;
if (type == &t_super)
{
if (cctx->ctx_ufunc == NULL || cctx->ctx_ufunc->uf_class == NULL)
{
emsg(_(e_using_super_not_in_class_function));
return FAIL;
}
is_super = TRUE;
cl = cctx->ctx_ufunc->uf_class;
// Remove &t_super from the stack.
--cctx->ctx_type_stack.ga_len;
}
else if (type->tt_type == VAR_CLASS)
{
garray_T *instr = &cctx->ctx_instr;
if (instr->ga_len > 0)
{
isn_T *isn = ((isn_T *)instr->ga_data) + instr->ga_len - 1;
if (isn->isn_type == ISN_LOADSCRIPT)
{
// The class was recognized as a script item. We only need
// to know what class it is, drop the instruction.
--instr->ga_len;
vim_free(isn->isn_arg.script.scriptref);
}
}
}
++*arg;
char_u *name = *arg;
char_u *name_end = find_name_end(name, NULL, NULL, FNE_CHECK_START);
if (name_end == name)
return FAIL;
size_t len = name_end - name;
if (*name_end == '(')
{
int function_count;
int child_count;
ufunc_T **functions;
if (type->tt_type == VAR_CLASS)
{
function_count = cl->class_class_function_count;
child_count = cl->class_class_function_count_child;
functions = cl->class_class_functions;
}
else
{
// type->tt_type == VAR_OBJECT: method call
function_count = cl->class_obj_method_count;
child_count = cl->class_obj_method_count_child;
functions = cl->class_obj_methods;
}
ufunc_T *ufunc = NULL;
for (int i = is_super ? child_count : 0; i < function_count; ++i)
{
ufunc_T *fp = functions[i];
// Use a separate pointer to avoid that ASAN complains about
// uf_name[] only being 4 characters.
char_u *ufname = (char_u *)fp->uf_name;
if (STRNCMP(name, ufname, len) == 0 && ufname[len] == NUL)
{
ufunc = fp;
break;
}
}
if (ufunc == NULL)
{
// TODO: different error for object method?
semsg(_(e_method_not_found_on_class_str_str), cl->class_name, name);
return FAIL;
}
// Compile the arguments and call the class function or object method.
// The object method will know that the object is on the stack, just
// before the arguments.
*arg = skipwhite(name_end + 1);
int argcount = 0;
if (compile_arguments(arg, cctx, &argcount, CA_NOT_SPECIAL) == FAIL)
return FAIL;
return generate_CALL(cctx, ufunc, argcount);
}
if (type->tt_type == VAR_OBJECT)
{
for (int i = 0; i < cl->class_obj_member_count; ++i)
{
ocmember_T *m = &cl->class_obj_members[i];
if (STRNCMP(name, m->ocm_name, len) == 0 && m->ocm_name[len] == NUL)
{
if (*name == '_' && cctx->ctx_ufunc->uf_class != cl)
{
semsg(_(e_cannot_access_private_member_str), m->ocm_name);
return FAIL;
}
*arg = name_end;
return generate_GET_OBJ_MEMBER(cctx, i, m->ocm_type);
}
}
semsg(_(e_member_not_found_on_object_str_str), cl->class_name, name);
}
else
{
// load class member
int idx;
for (idx = 0; idx < cl->class_class_member_count; ++idx)
{
ocmember_T *m = &cl->class_class_members[idx];
if (STRNCMP(name, m->ocm_name, len) == 0 && m->ocm_name[len] == NUL)
break;
}
if (idx < cl->class_class_member_count)
{
*arg = name_end;
return generate_CLASSMEMBER(cctx, TRUE, cl, idx);
}
semsg(_(e_class_member_not_found_str), name);
}
return FAIL;
}
/*
* Generate an instruction to load script-local variable "name", without the
* leading "s:".
* Also finds imported variables.
*/
int
compile_load_scriptvar(
cctx_T *cctx,
char_u *name, // variable NUL terminated
char_u *start, // start of variable
char_u **end) // end of variable, may be NULL
{
scriptitem_T *si;
int idx;
imported_T *import;
if (!SCRIPT_ID_VALID(current_sctx.sc_sid))
return FAIL;
si = SCRIPT_ITEM(current_sctx.sc_sid);
idx = get_script_item_idx(current_sctx.sc_sid, name, 0, cctx, NULL);
if (idx >= 0)
{
svar_T *sv = ((svar_T *)si->sn_var_vals.ga_data) + idx;
generate_VIM9SCRIPT(cctx, ISN_LOADSCRIPT,
current_sctx.sc_sid, idx, sv->sv_type);
return OK;
}
import = end == NULL ? NULL : find_imported(name, 0, FALSE);
if (import != NULL)
{
char_u *p = skipwhite(*end);
char_u *exp_name;
int cc;
ufunc_T *ufunc = NULL;
type_T *type;
int done = FALSE;
int res = OK;
// Need to lookup the member.
if (*p != '.')
{
semsg(_(e_expected_dot_after_name_str), start);
return FAIL;
}
++p;
if (VIM_ISWHITE(*p))
{
emsg(_(e_no_white_space_allowed_after_dot));
return FAIL;
}
// isolate one name
exp_name = p;
while (eval_isnamec(*p))
++p;
cc = *p;
*p = NUL;
si = SCRIPT_ITEM(import->imp_sid);
if (si->sn_import_autoload && si->sn_state == SN_STATE_NOT_LOADED)
// "import autoload './dir/script.vim'" or
// "import autoload './autoload/script.vim'" - load script first
res = generate_SOURCE(cctx, import->imp_sid);
if (res == OK)
{
if (si->sn_autoload_prefix != NULL
&& si->sn_state == SN_STATE_NOT_LOADED)
{
char_u *auto_name =
concat_str(si->sn_autoload_prefix, exp_name);
// autoload script must be loaded later, access by the autoload
// name. If a '(' follows it must be a function. Otherwise we
// don't know, it can be "script.Func".
if (cc == '(' || paren_follows_after_expr)
res = generate_PUSHFUNC(cctx, auto_name, &t_func_any, TRUE);
else
res = generate_AUTOLOAD(cctx, auto_name, &t_any);
vim_free(auto_name);
done = TRUE;
}
else if (si->sn_import_autoload
&& si->sn_state == SN_STATE_NOT_LOADED)
{
// If a '(' follows it must be a function. Otherwise we don't
// know, it can be "script.Func".
if (cc == '(' || paren_follows_after_expr)
{
char_u sid_name[MAX_FUNC_NAME_LEN];
func_name_with_sid(exp_name, import->imp_sid, sid_name);
res = generate_PUSHFUNC(cctx, sid_name, &t_func_any, TRUE);
}
else
res = generate_OLDSCRIPT(cctx, ISN_LOADEXPORT, exp_name,
import->imp_sid, &t_any);
done = TRUE;
}
else
{
idx = find_exported(import->imp_sid, exp_name, &ufunc, &type,
cctx, NULL, TRUE);
}
}
*p = cc;
*end = p;
if (done)
return res;
if (idx < 0)
{
if (ufunc != NULL)
{
// function call or function reference
generate_PUSHFUNC(cctx, ufunc->uf_name, NULL, TRUE);
return OK;
}
return FAIL;
}
generate_VIM9SCRIPT(cctx, ISN_LOADSCRIPT,
import->imp_sid,
idx,
type);
return OK;
}
// Can only get here if we know "name" is a script variable and not in a
// Vim9 script (variable is not in sn_var_vals): old style script.
return generate_OLDSCRIPT(cctx, ISN_LOADS, name, current_sctx.sc_sid,
&t_any);
}
static int
generate_funcref(cctx_T *cctx, char_u *name, int has_g_prefix)
{
ufunc_T *ufunc = find_func(name, FALSE);
compiletype_T compile_type;
// Reject a global non-autoload function found without the "g:" prefix.
if (ufunc == NULL || (!has_g_prefix && func_requires_g_prefix(ufunc)))
return FAIL;
// Need to compile any default values to get the argument types.
compile_type = get_compile_type(ufunc);
if (func_needs_compiling(ufunc, compile_type)
&& compile_def_function(ufunc, TRUE, compile_type, NULL) == FAIL)
return FAIL;
return generate_PUSHFUNC(cctx, ufunc->uf_name, ufunc->uf_func_type, TRUE);
}
/*
* Compile a variable name into a load instruction.
* "end" points to just after the name.
* "is_expr" is TRUE when evaluating an expression, might be a funcref.
* When "error" is FALSE do not give an error when not found.
*/
int
compile_load(
char_u **arg,
char_u *end_arg,
cctx_T *cctx,
int is_expr,
int error)
{
type_T *type;
char_u *name = NULL;
char_u *end = end_arg;
int res = FAIL;
int prev_called_emsg = called_emsg;
if (*(*arg + 1) == ':')
{
if (end <= *arg + 2)
{
isntype_T isn_type;
// load dictionary of namespace
switch (**arg)
{
case 'g': isn_type = ISN_LOADGDICT; break;
case 'w': isn_type = ISN_LOADWDICT; break;
case 't': isn_type = ISN_LOADTDICT; break;
case 'b': isn_type = ISN_LOADBDICT; break;
default:
semsg(_(e_namespace_not_supported_str), *arg);
goto theend;
}
if (generate_instr_type(cctx, isn_type, &t_dict_any) == NULL)
goto theend;
res = OK;
}
else
{
isntype_T isn_type = ISN_DROP;
// load namespaced variable
name = vim_strnsave(*arg + 2, end - (*arg + 2));
if (name == NULL)
return FAIL;
switch (**arg)
{
case 'v': res = generate_LOADV(cctx, name);
break;
case 's': if (current_script_is_vim9())
{
semsg(_(e_cannot_use_s_colon_in_vim9_script_str),
*arg);
vim_free(name);
return FAIL;
}
if (is_expr && find_func(name, FALSE) != NULL)
res = generate_funcref(cctx, name, FALSE);
else
res = compile_load_scriptvar(cctx, name,
NULL, &end);
break;
case 'g': if (vim_strchr(name, AUTOLOAD_CHAR) == NULL)
{
if (is_expr && ASCII_ISUPPER(*name)
&& find_func(name, FALSE) != NULL)
res = generate_funcref(cctx, name, TRUE);
else
isn_type = ISN_LOADG;
}
else
{
isn_type = ISN_LOADAUTO;
vim_free(name);
name = vim_strnsave(*arg, end - *arg);
if (name == NULL)
return FAIL;
}
break;
case 'w': isn_type = ISN_LOADW; break;
case 't': isn_type = ISN_LOADT; break;
case 'b': isn_type = ISN_LOADB; break;
default: // cannot happen, just in case
semsg(_(e_namespace_not_supported_str), *arg);
goto theend;
}
if (isn_type != ISN_DROP)
{
// Global, Buffer-local, Window-local and Tabpage-local
// variables can be defined later, thus we don't check if it
// exists, give an error at runtime.
res = generate_LOAD(cctx, isn_type, 0, name, &t_any);
}
}
}
else
{
size_t len = end - *arg;
int idx;
int gen_load = FALSE;
int gen_load_outer = 0;
int outer_loop_depth = -1;
int outer_loop_idx = -1;
name = vim_strnsave(*arg, end - *arg);
if (name == NULL)
return FAIL;
if (STRCMP(name, "super") == 0
&& cctx->ctx_ufunc != NULL
&& (cctx->ctx_ufunc->uf_flags & (FC_OBJECT|FC_NEW)) == 0)
{
// super.SomeFunc() in a class function: push &t_super type, this
// is recognized in compile_subscript().
res = push_type_stack(cctx, &t_super);
if (*end != '.')
emsg(_(e_super_must_be_followed_by_dot));
}
else if (vim_strchr(name, AUTOLOAD_CHAR) != NULL)
{
script_autoload(name, FALSE);
res = generate_LOAD(cctx, ISN_LOADAUTO, 0, name, &t_any);
}
else if (arg_exists(*arg, len, &idx, &type, &gen_load_outer, cctx)
== OK)
{
if (gen_load_outer == 0)
gen_load = TRUE;
}
else
{
lvar_T lvar;
class_T *cl = NULL;
if (lookup_local(*arg, len, &lvar, cctx) == OK)
{
type = lvar.lv_type;
idx = lvar.lv_idx;
if (lvar.lv_from_outer != 0)
{
gen_load_outer = lvar.lv_from_outer;
outer_loop_depth = lvar.lv_loop_depth;
outer_loop_idx = lvar.lv_loop_idx;
}
else
gen_load = TRUE;
}
else if ((idx = class_member_index(*arg, len, &cl, cctx)) >= 0)
{
res = generate_CLASSMEMBER(cctx, TRUE, cl, idx);
}
else
{
// "var" can be script-local even without using "s:" if it
// already exists in a Vim9 script or when it's imported.
if (script_var_exists(*arg, len, cctx, NULL) == OK
|| find_imported(name, 0, FALSE) != NULL)
res = compile_load_scriptvar(cctx, name, *arg, &end);
// When evaluating an expression and the name starts with an
// uppercase letter it can be a user defined function.
// generate_funcref() will fail if the function can't be found.
if (res == FAIL && is_expr && ASCII_ISUPPER(*name))
res = generate_funcref(cctx, name, FALSE);
}
}
if (gen_load)
res = generate_LOAD(cctx, ISN_LOAD, idx, NULL, type);
if (gen_load_outer > 0)
{
res = generate_LOADOUTER(cctx, idx, gen_load_outer,
outer_loop_depth, outer_loop_idx, type);
cctx->ctx_outer_used = TRUE;
}
}
*arg = end;
theend:
if (res == FAIL && error && called_emsg == prev_called_emsg)
semsg(_(e_variable_not_found_str), name);
vim_free(name);
return res;
}
/*
* Compile a string in a ISN_PUSHS instruction into an ISN_INSTR.
* "str_offset" is the number of leading bytes to skip from the string.
* Returns FAIL if compilation fails.
*/
static int
compile_string(isn_T *isn, cctx_T *cctx, int str_offset)
{
char_u *s = isn->isn_arg.string + str_offset;
garray_T save_ga = cctx->ctx_instr;
int expr_res;
int trailing_error;
int instr_count;
isn_T *instr = NULL;
// Remove the string type from the stack.
--cctx->ctx_type_stack.ga_len;
// Temporarily reset the list of instructions so that the jump labels are
// correct.
cctx->ctx_instr.ga_len = 0;
cctx->ctx_instr.ga_maxlen = 0;
cctx->ctx_instr.ga_data = NULL;
// avoid peeking a next line
int galen_save = cctx->ctx_ufunc->uf_lines.ga_len;
cctx->ctx_ufunc->uf_lines.ga_len = 0;
expr_res = compile_expr0(&s, cctx);
cctx->ctx_ufunc->uf_lines.ga_len = galen_save;
s = skipwhite(s);
trailing_error = *s != NUL;
if (expr_res == FAIL || trailing_error
|| GA_GROW_FAILS(&cctx->ctx_instr, 1))
{
if (trailing_error)
semsg(_(e_trailing_characters_str), s);
clear_instr_ga(&cctx->ctx_instr);
cctx->ctx_instr = save_ga;
++cctx->ctx_type_stack.ga_len;
return FAIL;
}
// Move the generated instructions into the ISN_INSTR instruction, then
// restore the list of instructions.
instr_count = cctx->ctx_instr.ga_len;
instr = cctx->ctx_instr.ga_data;
instr[instr_count].isn_type = ISN_FINISH;
cctx->ctx_instr = save_ga;
vim_free(isn->isn_arg.string);
isn->isn_type = ISN_INSTR;
isn->isn_arg.instr = instr;
return OK;
}
/*
* Compile the argument expressions.
* "arg" points to just after the "(" and is advanced to after the ")"
*/
int
compile_arguments(
char_u **arg,
cctx_T *cctx,
int *argcount,
ca_special_T special_fn)
{
char_u *p = *arg;
char_u *whitep = *arg;
int must_end = FALSE;
int instr_count;
for (;;)
{
if (may_get_next_line(whitep, &p, cctx) == FAIL)
goto failret;
if (*p == ')')
{
*arg = p + 1;
return OK;
}
if (must_end)
{
semsg(_(e_missing_comma_before_argument_str), p);
return FAIL;
}
instr_count = cctx->ctx_instr.ga_len;
if (compile_expr0(&p, cctx) == FAIL)
return FAIL;
++*argcount;
if (special_fn == CA_SEARCHPAIR && *argcount == 5
&& cctx->ctx_instr.ga_len == instr_count + 1)
{
isn_T *isn = ((isn_T *)cctx->ctx_instr.ga_data) + instr_count;
// {skip} argument of searchpair() can be compiled if not empty
if (isn->isn_type == ISN_PUSHS && *isn->isn_arg.string != NUL)
compile_string(isn, cctx, 0);
}
else if (special_fn == CA_SUBSTITUTE && *argcount == 3
&& cctx->ctx_instr.ga_len == instr_count + 1)
{
isn_T *isn = ((isn_T *)cctx->ctx_instr.ga_data) + instr_count;
// {sub} argument of substitute() can be compiled if it starts
// with \=
if (isn->isn_type == ISN_PUSHS && isn->isn_arg.string[0] == '\\'
&& isn->isn_arg.string[1] == '=')
compile_string(isn, cctx, 2);
}
if (*p != ',' && *skipwhite(p) == ',')
{
semsg(_(e_no_white_space_allowed_before_str_str), ",", p);
p = skipwhite(p);
}
if (*p == ',')
{
++p;
if (*p != NUL && !VIM_ISWHITE(*p))
semsg(_(e_white_space_required_after_str_str), ",", p - 1);
}
else
must_end = TRUE;
whitep = p;
p = skipwhite(p);
}
failret:
emsg(_(e_missing_closing_paren));
return FAIL;
}
/*
* Compile a function call: name(arg1, arg2)
* "arg" points to "name", "arg + varlen" to the "(".
* "argcount_init" is 1 for "value->method()"
* Instructions:
* EVAL arg1
* EVAL arg2
* BCALL / DCALL / UCALL
*/
static int
compile_call(
char_u **arg,
size_t varlen,
cctx_T *cctx,
ppconst_T *ppconst,
int argcount_init)
{
char_u *name = *arg;
char_u *p;
int argcount = argcount_init;
char_u namebuf[MAX_FUNC_NAME_LEN];
char_u fname_buf[FLEN_FIXED + 1];
char_u *tofree = NULL;
int error = FCERR_NONE;
ufunc_T *ufunc = NULL;
int res = FAIL;
int is_autoload;
int has_g_namespace;
ca_special_T special_fn;
imported_T *import;
if (varlen >= sizeof(namebuf))
{
semsg(_(e_name_too_long_str), name);
return FAIL;
}
vim_strncpy(namebuf, *arg, varlen);
import = find_imported(name, varlen, FALSE);
if (import != NULL)
{
semsg(_(e_cannot_use_str_itself_it_is_imported), namebuf);
return FAIL;
}
// We can evaluate "has('name')" at compile time.
// We can evaluate "len('string')" at compile time.
// We always evaluate "exists_compiled()" at compile time.
if ((varlen == 3
&& (STRNCMP(*arg, "has", 3) == 0 || STRNCMP(*arg, "len", 3) == 0))
|| (varlen == 15 && STRNCMP(*arg, "exists_compiled", 6) == 0))
{
char_u *s = skipwhite(*arg + varlen + 1);
typval_T argvars[2];
int is_has = **arg == 'h';
int is_len = **arg == 'l';
argvars[0].v_type = VAR_UNKNOWN;
if (*s == '"')
(void)eval_string(&s, &argvars[0], TRUE, FALSE);
else if (*s == '\'')
(void)eval_lit_string(&s, &argvars[0], TRUE, FALSE);
s = skipwhite(s);
if (*s == ')' && argvars[0].v_type == VAR_STRING
&& ((is_has && !dynamic_feature(argvars[0].vval.v_string))
|| !is_has))
{
typval_T *tv = &ppconst->pp_tv[ppconst->pp_used];
*arg = s + 1;
argvars[1].v_type = VAR_UNKNOWN;
tv->v_type = VAR_NUMBER;
tv->vval.v_number = 0;
if (is_has)
f_has(argvars, tv);
else if (is_len)
f_len(argvars, tv);
else
f_exists(argvars, tv);
clear_tv(&argvars[0]);
++ppconst->pp_used;
return OK;
}
clear_tv(&argvars[0]);
if (!is_has && !is_len)
{
emsg(_(e_argument_of_exists_compiled_must_be_literal_string));
return FAIL;
}
}
if (generate_ppconst(cctx, ppconst) == FAIL)
return FAIL;
name = fname_trans_sid(namebuf, fname_buf, &tofree, &error);
// We handle the "skip" argument of searchpair() and searchpairpos()
// differently.
if ((varlen == 6 && STRNCMP(*arg, "search", 6) == 0)
|| (varlen == 9 && STRNCMP(*arg, "searchpos", 9) == 0)
|| (varlen == 10 && STRNCMP(*arg, "searchpair", 10) == 0)
|| (varlen == 13 && STRNCMP(*arg, "searchpairpos", 13) == 0))
special_fn = CA_SEARCHPAIR;
else if (varlen == 10 && STRNCMP(*arg, "substitute", 10) == 0)
special_fn = CA_SUBSTITUTE;
else
special_fn = CA_NOT_SPECIAL;
*arg = skipwhite(*arg + varlen + 1);
if (compile_arguments(arg, cctx, &argcount, special_fn) == FAIL)
goto theend;
is_autoload = vim_strchr(name, AUTOLOAD_CHAR) != NULL;
if (ASCII_ISLOWER(*name) && name[1] != ':' && !is_autoload)
{
int idx;
// builtin function
idx = find_internal_func(name);
if (idx >= 0)
{
if (STRCMP(name, "flatten") == 0)
{
emsg(_(e_cannot_use_flatten_in_vim9_script));
goto theend;