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Copy pathvim9class.c
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vim9class.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.
*/
/*
* vim9class.c: Vim9 script class support
*/
#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
/*
* Parse a member declaration, both object and class member.
* Returns OK or FAIL. When OK then "varname_end" is set to just after the
* variable name and "type_ret" is set to the decleared or detected type.
* "init_expr" is set to the initialisation expression (allocated), if there is
* one. For an interface "init_expr" is NULL.
*/
static int
parse_member(
exarg_T *eap,
char_u *line,
char_u *varname,
int has_public, // TRUE if "public" seen before "varname"
char_u **varname_end,
garray_T *type_list,
type_T **type_ret,
char_u **init_expr)
{
*varname_end = to_name_end(varname, FALSE);
if (*varname == '_' && has_public)
{
semsg(_(e_public_member_name_cannot_start_with_underscore_str), line);
return FAIL;
}
char_u *colon = skipwhite(*varname_end);
char_u *type_arg = colon;
type_T *type = NULL;
if (*colon == ':')
{
if (VIM_ISWHITE(**varname_end))
{
semsg(_(e_no_white_space_allowed_before_colon_str), varname);
return FAIL;
}
if (!VIM_ISWHITE(colon[1]))
{
semsg(_(e_white_space_required_after_str_str), ":", varname);
return FAIL;
}
type_arg = skipwhite(colon + 1);
type = parse_type(&type_arg, type_list, TRUE);
if (type == NULL)
return FAIL;
}
char_u *expr_start = skipwhite(type_arg);
char_u *expr_end = expr_start;
if (type == NULL && *expr_start != '=')
{
emsg(_(e_type_or_initialization_required));
return FAIL;
}
if (*expr_start == '=')
{
if (!VIM_ISWHITE(expr_start[-1]) || !VIM_ISWHITE(expr_start[1]))
{
semsg(_(e_white_space_required_before_and_after_str_at_str),
"=", type_arg);
return FAIL;
}
expr_start = skipwhite(expr_start + 1);
expr_end = expr_start;
evalarg_T evalarg;
fill_evalarg_from_eap(&evalarg, eap, FALSE);
skip_expr(&expr_end, NULL);
if (type == NULL)
{
// No type specified, use the type of the initializer.
typval_T tv;
tv.v_type = VAR_UNKNOWN;
char_u *expr = expr_start;
int res = eval0(expr, &tv, eap, &evalarg);
if (res == OK)
{
type = typval2type(&tv, get_copyID(), type_list,
TVTT_DO_MEMBER);
clear_tv(&tv);
}
if (type == NULL)
{
semsg(_(e_cannot_get_object_member_type_from_initializer_str),
expr_start);
clear_evalarg(&evalarg, NULL);
return FAIL;
}
}
clear_evalarg(&evalarg, NULL);
}
if (!valid_declaration_type(type))
return FAIL;
*type_ret = type;
if (expr_end > expr_start)
{
if (init_expr == NULL)
{
emsg(_(e_cannot_initialize_member_in_interface));
return FAIL;
}
*init_expr = vim_strnsave(expr_start, expr_end - expr_start);
}
return OK;
}
/*
* Add a member to an object or a class.
* Returns OK when successful, "init_expr" will be consumed then.
* Returns FAIL otherwise, caller might need to free "init_expr".
*/
static int
add_member(
garray_T *gap,
char_u *varname,
char_u *varname_end,
int has_public,
type_T *type,
char_u *init_expr)
{
if (ga_grow(gap, 1) == FAIL)
return FAIL;
ocmember_T *m = ((ocmember_T *)gap->ga_data) + gap->ga_len;
m->ocm_name = vim_strnsave(varname, varname_end - varname);
m->ocm_access = has_public ? VIM_ACCESS_ALL
: *varname == '_' ? VIM_ACCESS_PRIVATE : VIM_ACCESS_READ;
m->ocm_type = type;
if (init_expr != NULL)
m->ocm_init = init_expr;
++gap->ga_len;
return OK;
}
/*
* Move the class or object members found while parsing a class into the class.
* "gap" contains the found members.
* "parent_members" points to the members in the parent class (if any)
* "parent_count" is the number of members in the parent class
* "members" will be set to the newly allocated array of members and
* "member_count" set to the number of members.
* Returns OK or FAIL.
*/
static int
add_members_to_class(
garray_T *gap,
ocmember_T *parent_members,
int parent_count,
ocmember_T **members,
int *member_count)
{
*member_count = parent_count + gap->ga_len;
*members = *member_count == 0 ? NULL
: ALLOC_MULT(ocmember_T, *member_count);
if (*member_count > 0 && *members == NULL)
return FAIL;
for (int i = 0; i < parent_count; ++i)
{
// parent members need to be copied
ocmember_T *m = *members + i;
*m = parent_members[i];
m->ocm_name = vim_strsave(m->ocm_name);
if (m->ocm_init != NULL)
m->ocm_init = vim_strsave(m->ocm_init);
}
if (gap->ga_len > 0)
// new members are moved
mch_memmove(*members + parent_count,
gap->ga_data, sizeof(ocmember_T) * gap->ga_len);
VIM_CLEAR(gap->ga_data);
return OK;
}
/*
* Convert a member index "idx" of interface "itf" to the member index of class
* "cl" implementing that interface.
*/
int
object_index_from_itf_index(class_T *itf, int is_method, int idx, class_T *cl)
{
if (idx > (is_method ? itf->class_obj_method_count
: itf->class_obj_member_count))
{
siemsg("index %d out of range for interface %s", idx, itf->class_name);
return 0;
}
itf2class_T *i2c;
for (i2c = itf->class_itf2class; i2c != NULL; i2c = i2c->i2c_next)
if (i2c->i2c_class == cl && i2c->i2c_is_method == is_method)
break;
if (i2c == NULL)
{
siemsg("class %s not found on interface %s",
cl->class_name, itf->class_name);
return 0;
}
int *table = (int *)(i2c + 1);
return table[idx];
}
/*
* Handle ":class" and ":abstract class" up to ":endclass".
* Handle ":interface" up to ":endinterface".
*/
void
ex_class(exarg_T *eap)
{
int is_class = eap->cmdidx == CMD_class; // FALSE for :interface
long start_lnum = SOURCING_LNUM;
char_u *arg = eap->arg;
int is_abstract = eap->cmdidx == CMD_abstract;
if (is_abstract)
{
if (STRNCMP(arg, "class", 5) != 0 || !VIM_ISWHITE(arg[5]))
{
semsg(_(e_invalid_argument_str), arg);
return;
}
arg = skipwhite(arg + 5);
is_class = TRUE;
}
if (!current_script_is_vim9()
|| (cmdmod.cmod_flags & CMOD_LEGACY)
|| !getline_equal(eap->getline, eap->cookie, getsourceline))
{
if (is_class)
emsg(_(e_class_can_only_be_defined_in_vim9_script));
else
emsg(_(e_interface_can_only_be_defined_in_vim9_script));
return;
}
if (!ASCII_ISUPPER(*arg))
{
if (is_class)
semsg(_(e_class_name_must_start_with_uppercase_letter_str), arg);
else
semsg(_(e_interface_name_must_start_with_uppercase_letter_str),
arg);
return;
}
char_u *name_end = find_name_end(arg, NULL, NULL, FNE_CHECK_START);
if (!IS_WHITE_OR_NUL(*name_end))
{
semsg(_(e_white_space_required_after_name_str), arg);
return;
}
char_u *name_start = arg;
// "export class" gets used when creating the class, don't use "is_export"
// for the items inside the class.
int class_export = is_export;
is_export = FALSE;
// TODO:
// generics: <Tkey, Tentry>
// Name for "extends BaseClass"
char_u *extends = NULL;
// Names for "implements SomeInterface"
garray_T ga_impl;
ga_init2(&ga_impl, sizeof(char_u *), 5);
arg = skipwhite(name_end);
while (*arg != NUL && *arg != '#' && *arg != '\n')
{
// TODO:
// specifies SomeInterface
if (STRNCMP(arg, "extends", 7) == 0 && IS_WHITE_OR_NUL(arg[7]))
{
if (extends != NULL)
{
emsg(_(e_duplicate_extends));
goto early_ret;
}
arg = skipwhite(arg + 7);
char_u *end = find_name_end(arg, NULL, NULL, FNE_CHECK_START);
if (!IS_WHITE_OR_NUL(*end))
{
semsg(_(e_white_space_required_after_name_str), arg);
goto early_ret;
}
extends = vim_strnsave(arg, end - arg);
if (extends == NULL)
goto early_ret;
arg = skipwhite(end + 1);
}
else if (STRNCMP(arg, "implements", 10) == 0
&& IS_WHITE_OR_NUL(arg[10]))
{
if (ga_impl.ga_len > 0)
{
emsg(_(e_duplicate_implements));
goto early_ret;
}
arg = skipwhite(arg + 10);
for (;;)
{
char_u *impl_end = find_name_end(arg, NULL, NULL,
FNE_CHECK_START);
if (!IS_WHITE_OR_NUL(*impl_end) && *impl_end != ',')
{
semsg(_(e_white_space_required_after_name_str), arg);
goto early_ret;
}
char_u *iname = vim_strnsave(arg, impl_end - arg);
if (iname == NULL)
goto early_ret;
for (int i = 0; i < ga_impl.ga_len; ++i)
if (STRCMP(((char_u **)ga_impl.ga_data)[i], iname) == 0)
{
semsg(_(e_duplicate_interface_after_implements_str),
iname);
vim_free(iname);
goto early_ret;
}
if (ga_add_string(&ga_impl, iname) == FAIL)
{
vim_free(iname);
goto early_ret;
}
if (*impl_end != ',')
{
arg = skipwhite(impl_end);
break;
}
arg = skipwhite(impl_end + 1);
}
}
else
{
semsg(_(e_trailing_characters_str), arg);
early_ret:
vim_free(extends);
ga_clear_strings(&ga_impl);
return;
}
}
garray_T type_list; // list of pointers to allocated types
ga_init2(&type_list, sizeof(type_T *), 10);
// Growarray with class members declared in the class.
garray_T classmembers;
ga_init2(&classmembers, sizeof(ocmember_T), 10);
// Growarray with functions declared in the class.
garray_T classfunctions;
ga_init2(&classfunctions, sizeof(ufunc_T *), 10);
// Growarray with object members declared in the class.
garray_T objmembers;
ga_init2(&objmembers, sizeof(ocmember_T), 10);
// Growarray with object methods declared in the class.
garray_T objmethods;
ga_init2(&objmethods, sizeof(ufunc_T *), 10);
/*
* Go over the body of the class/interface until "endclass" or
* "endinterface" is found.
*/
char_u *theline = NULL;
int success = FALSE;
for (;;)
{
vim_free(theline);
theline = eap->getline(':', eap->cookie, 0, GETLINE_CONCAT_ALL);
if (theline == NULL)
break;
char_u *line = skipwhite(theline);
// Skip empty and comment lines.
if (*line == NUL)
continue;
if (*line == '#')
{
if (vim9_bad_comment(line))
break;
continue;
}
char_u *p = line;
char *end_name = is_class ? "endclass" : "endinterface";
if (checkforcmd(&p, end_name, is_class ? 4 : 5))
{
if (STRNCMP(line, end_name, is_class ? 8 : 12) != 0)
semsg(_(e_command_cannot_be_shortened_str), line);
else if (*p == '|' || !ends_excmd2(line, p))
semsg(_(e_trailing_characters_str), p);
else
success = TRUE;
break;
}
char *wrong_name = is_class ? "endinterface" : "endclass";
if (checkforcmd(&p, wrong_name, is_class ? 5 : 4))
{
semsg(_(e_invalid_command_str_expected_str), line, end_name);
break;
}
int has_public = FALSE;
if (checkforcmd(&p, "public", 3))
{
if (STRNCMP(line, "public", 6) != 0)
{
semsg(_(e_command_cannot_be_shortened_str), line);
break;
}
has_public = TRUE;
p = skipwhite(line + 6);
if (STRNCMP(p, "this", 4) != 0 && STRNCMP(p, "static", 6) != 0)
{
emsg(_(e_public_must_be_followed_by_this_or_static));
break;
}
}
int has_static = FALSE;
char_u *ps = p;
if (checkforcmd(&p, "static", 4))
{
if (STRNCMP(ps, "static", 6) != 0)
{
semsg(_(e_command_cannot_be_shortened_str), ps);
break;
}
has_static = TRUE;
p = skipwhite(ps + 6);
}
// object members (public, read access, private):
// "this._varname"
// "this.varname"
// "public this.varname"
if (STRNCMP(p, "this", 4) == 0)
{
if (p[4] != '.' || !eval_isnamec1(p[5]))
{
semsg(_(e_invalid_object_member_declaration_str), p);
break;
}
char_u *varname = p + 5;
char_u *varname_end = NULL;
type_T *type = NULL;
char_u *init_expr = NULL;
if (parse_member(eap, line, varname, has_public,
&varname_end, &type_list, &type,
is_class ? &init_expr: NULL) == FAIL)
break;
if (add_member(&objmembers, varname, varname_end,
has_public, type, init_expr) == FAIL)
{
vim_free(init_expr);
break;
}
}
// constructors:
// def new()
// enddef
// def newOther()
// enddef
// object methods and class functions:
// def SomeMethod()
// enddef
// static def ClassFunction()
// enddef
// TODO:
// def <Tval> someMethod()
// enddef
else if (checkforcmd(&p, "def", 3))
{
exarg_T ea;
garray_T lines_to_free;
// TODO: error for "public static def Func()"?
CLEAR_FIELD(ea);
ea.cmd = line;
ea.arg = p;
ea.cmdidx = CMD_def;
ea.getline = eap->getline;
ea.cookie = eap->cookie;
ga_init2(&lines_to_free, sizeof(char_u *), 50);
ufunc_T *uf = define_function(&ea, NULL, &lines_to_free,
is_class ? CF_CLASS : CF_INTERFACE);
ga_clear_strings(&lines_to_free);
if (uf != NULL)
{
char_u *name = uf->uf_name;
int is_new = STRNCMP(name, "new", 3) == 0;
if (is_new && is_abstract)
{
emsg(_(e_cannot_define_new_function_in_abstract_class));
success = FALSE;
break;
}
garray_T *fgap = has_static || is_new
? &classfunctions : &objmethods;
// Check the name isn't used already.
for (int i = 0; i < fgap->ga_len; ++i)
{
char_u *n = ((ufunc_T **)fgap->ga_data)[i]->uf_name;
if (STRCMP(name, n) == 0)
{
semsg(_(e_duplicate_function_str), name);
break;
}
}
if (ga_grow(fgap, 1) == OK)
{
if (is_new)
uf->uf_flags |= FC_NEW;
((ufunc_T **)fgap->ga_data)[fgap->ga_len] = uf;
++fgap->ga_len;
}
}
}
// class members
else if (has_static)
{
// class members (public, read access, private):
// "static _varname"
// "static varname"
// "public static varname"
char_u *varname = p;
char_u *varname_end = NULL;
type_T *type = NULL;
char_u *init_expr = NULL;
if (parse_member(eap, line, varname, has_public,
&varname_end, &type_list, &type,
is_class ? &init_expr : NULL) == FAIL)
break;
if (add_member(&classmembers, varname, varname_end,
has_public, type, init_expr) == FAIL)
{
vim_free(init_expr);
break;
}
}
else
{
if (is_class)
semsg(_(e_not_valid_command_in_class_str), line);
else
semsg(_(e_not_valid_command_in_interface_str), line);
break;
}
}
vim_free(theline);
class_T *extends_cl = NULL; // class from "extends" argument
/*
* Check a few things before defining the class.
*/
// Check the "extends" class is valid.
if (success && extends != NULL)
{
typval_T tv;
tv.v_type = VAR_UNKNOWN;
if (eval_variable_import(extends, &tv) == FAIL)
{
semsg(_(e_class_name_not_found_str), extends);
success = FALSE;
}
else
{
if (tv.v_type != VAR_CLASS
|| tv.vval.v_class == NULL
|| (tv.vval.v_class->class_flags & CLASS_INTERFACE) != 0)
{
semsg(_(e_cannot_extend_str), extends);
success = FALSE;
}
else
{
extends_cl = tv.vval.v_class;
++extends_cl->class_refcount;
}
clear_tv(&tv);
}
}
VIM_CLEAR(extends);
class_T **intf_classes = NULL;
// Check all "implements" entries are valid.
if (success && ga_impl.ga_len > 0)
{
intf_classes = ALLOC_CLEAR_MULT(class_T *, ga_impl.ga_len);
for (int i = 0; i < ga_impl.ga_len && success; ++i)
{
char_u *impl = ((char_u **)ga_impl.ga_data)[i];
typval_T tv;
tv.v_type = VAR_UNKNOWN;
if (eval_variable_import(impl, &tv) == FAIL)
{
semsg(_(e_interface_name_not_found_str), impl);
success = FALSE;
break;
}
if (tv.v_type != VAR_CLASS
|| tv.vval.v_class == NULL
|| (tv.vval.v_class->class_flags & CLASS_INTERFACE) == 0)
{
semsg(_(e_not_valid_interface_str), impl);
success = FALSE;
}
class_T *ifcl = tv.vval.v_class;
intf_classes[i] = ifcl;
++ifcl->class_refcount;
// check the members of the interface match the members of the class
for (int loop = 1; loop <= 2 && success; ++loop)
{
// loop == 1: check class members
// loop == 2: check object members
int if_count = loop == 1 ? ifcl->class_class_member_count
: ifcl->class_obj_member_count;
if (if_count == 0)
continue;
ocmember_T *if_ms = loop == 1 ? ifcl->class_class_members
: ifcl->class_obj_members;
ocmember_T *cl_ms = (ocmember_T *)(loop == 1
? classmembers.ga_data
: objmembers.ga_data);
int cl_count = loop == 1 ? classmembers.ga_len
: objmembers.ga_len;
for (int if_i = 0; if_i < if_count; ++if_i)
{
int cl_i;
for (cl_i = 0; cl_i < cl_count; ++cl_i)
{
ocmember_T *m = &cl_ms[cl_i];
if (STRCMP(if_ms[if_i].ocm_name, m->ocm_name) == 0)
{
// TODO: check type
break;
}
}
if (cl_i == cl_count)
{
semsg(_(e_member_str_of_interface_str_not_implemented),
if_ms[if_i].ocm_name, impl);
success = FALSE;
break;
}
}
}
// check the functions/methods of the interface match the
// functions/methods of the class
for (int loop = 1; loop <= 2 && success; ++loop)
{
// loop == 1: check class functions
// loop == 2: check object methods
int if_count = loop == 1 ? ifcl->class_class_function_count
: ifcl->class_obj_method_count;
if (if_count == 0)
continue;
ufunc_T **if_fp = loop == 1 ? ifcl->class_class_functions
: ifcl->class_obj_methods;
ufunc_T **cl_fp = (ufunc_T **)(loop == 1
? classfunctions.ga_data
: objmethods.ga_data);
int cl_count = loop == 1 ? classfunctions.ga_len
: objmethods.ga_len;
for (int if_i = 0; if_i < if_count; ++if_i)
{
char_u *if_name = if_fp[if_i]->uf_name;
int cl_i;
for (cl_i = 0; cl_i < cl_count; ++cl_i)
{
char_u *cl_name = cl_fp[cl_i]->uf_name;
if (STRCMP(if_name, cl_name) == 0)
{
// TODO: check return and argument types
break;
}
}
if (cl_i == cl_count)
{
semsg(_(e_function_str_of_interface_str_not_implemented),
if_name, impl);
success = FALSE;
break;
}
}
}
clear_tv(&tv);
}
}
if (success)
{
// Check no function argument name is used as an object/class member.
for (int loop = 1; loop <= 2 && success; ++loop)
{
garray_T *gap = loop == 1 ? &classfunctions : &objmethods;
for (int fi = 0; fi < gap->ga_len && success; ++fi)
{
ufunc_T *uf = ((ufunc_T **)gap->ga_data)[fi];
for (int i = 0; i < uf->uf_args.ga_len && success; ++i)
{
char_u *aname = ((char_u **)uf->uf_args.ga_data)[i];
for (int il = 1; il <= 2 && success; ++il)
{
// For a "new()" function "this.member" arguments are
// OK. TODO: check for the "this." prefix.
if (STRNCMP(uf->uf_name, "new", 3) == 0 && il == 2)
continue;
garray_T *mgap = il == 1 ? &classmembers : &objmembers;
for (int mi = 0; mi < mgap->ga_len; ++mi)
{
char_u *mname = ((ocmember_T *)mgap->ga_data
+ mi)->ocm_name;
if (STRCMP(aname, mname) == 0)
{
success = FALSE;
semsg(_(e_argument_already_declared_in_class_str),
aname);
break;
}
}
}
}
}
}
}
class_T *cl = NULL;
if (success)
{
// "endclass" encountered without failures: Create the class.
cl = ALLOC_CLEAR_ONE(class_T);
if (cl == NULL)
goto cleanup;
if (!is_class)
cl->class_flags = CLASS_INTERFACE;
cl->class_refcount = 1;
cl->class_name = vim_strnsave(name_start, name_end - name_start);
if (cl->class_name == NULL)
goto cleanup;
if (extends_cl != NULL)
{
cl->class_extends = extends_cl;
extends_cl->class_flags |= CLASS_EXTENDED;
}
// Add class and object members to "cl".
if (add_members_to_class(&classmembers,
extends_cl == NULL ? NULL
: extends_cl->class_class_members,
extends_cl == NULL ? 0
: extends_cl->class_class_member_count,
&cl->class_class_members,
&cl->class_class_member_count) == FAIL
|| add_members_to_class(&objmembers,
extends_cl == NULL ? NULL
: extends_cl->class_obj_members,
extends_cl == NULL ? 0
: extends_cl->class_obj_member_count,
&cl->class_obj_members,
&cl->class_obj_member_count) == FAIL)
goto cleanup;
if (ga_impl.ga_len > 0)
{
// Move the "implements" names into the class.
cl->class_interface_count = ga_impl.ga_len;
cl->class_interfaces = ALLOC_MULT(char_u *, ga_impl.ga_len);
if (cl->class_interfaces == NULL)
goto cleanup;
for (int i = 0; i < ga_impl.ga_len; ++i)
cl->class_interfaces[i] = ((char_u **)ga_impl.ga_data)[i];
VIM_CLEAR(ga_impl.ga_data);
ga_impl.ga_len = 0;
cl->class_interfaces_cl = intf_classes;
intf_classes = NULL;
}
if (cl->class_interface_count > 0 || extends_cl != NULL)
{
// For each interface add a lookuptable for the member index on the
// interface to the member index in this class.
// And a lookuptable for the object method index on the interface
// to the object method index in this class.
// Also do this for the extended class, if any.
for (int i = 0; i <= cl->class_interface_count; ++i)
{
class_T *ifcl = i < cl->class_interface_count
? cl->class_interfaces_cl[i]
: extends_cl;
if (ifcl == NULL)
continue;
// Table for members.
itf2class_T *if2cl = alloc_clear(sizeof(itf2class_T)
+ ifcl->class_obj_member_count * sizeof(int));
if (if2cl == NULL)
goto cleanup;
if2cl->i2c_next = ifcl->class_itf2class;
ifcl->class_itf2class = if2cl;
if2cl->i2c_class = cl;
if2cl->i2c_is_method = FALSE;
for (int if_i = 0; if_i < ifcl->class_obj_member_count; ++if_i)
for (int cl_i = 0; cl_i < cl->class_obj_member_count;
++cl_i)
{
if (STRCMP(ifcl->class_obj_members[if_i].ocm_name,
cl->class_obj_members[cl_i].ocm_name) == 0)
{
int *table = (int *)(if2cl + 1);
table[if_i] = cl_i;
break;
}
}
// Table for methods.
if2cl = alloc_clear(sizeof(itf2class_T)
+ ifcl->class_obj_method_count * sizeof(int));
if (if2cl == NULL)
goto cleanup;
if2cl->i2c_next = ifcl->class_itf2class;
ifcl->class_itf2class = if2cl;
if2cl->i2c_class = cl;
if2cl->i2c_is_method = TRUE;
for (int if_i = 0; if_i < ifcl->class_obj_method_count; ++if_i)
{
int done = FALSE;
for (int cl_i = 0; cl_i < objmethods.ga_len; ++cl_i)
{
if (STRCMP(ifcl->class_obj_methods[if_i]->uf_name,
((ufunc_T **)objmethods.ga_data)[cl_i]->uf_name)
== 0)
{
int *table = (int *)(if2cl + 1);
table[if_i] = cl_i;
done = TRUE;
break;
}
}
if (!done && extends_cl != NULL)
{
for (int cl_i = 0;
cl_i < extends_cl->class_obj_member_count; ++cl_i)
{
if (STRCMP(ifcl->class_obj_methods[if_i]->uf_name,
extends_cl->class_obj_methods[cl_i]->uf_name)
== 0)
{
int *table = (int *)(if2cl + 1);
table[if_i] = cl_i;
break;
}
}
}
}
}
}
if (is_class && cl->class_class_member_count > 0)
{
// Allocate a typval for each class member and initialize it.
cl->class_members_tv = ALLOC_CLEAR_MULT(typval_T,
cl->class_class_member_count);
if (cl->class_members_tv != NULL)
for (int i = 0; i < cl->class_class_member_count; ++i)
{
ocmember_T *m = &cl->class_class_members[i];
typval_T *tv = &cl->class_members_tv[i];
if (m->ocm_init != NULL)
{
typval_T *etv = eval_expr(m->ocm_init, eap);
if (etv != NULL)
{
*tv = *etv;
vim_free(etv);
}
}
else
{
// TODO: proper default value
tv->v_type = m->ocm_type->tt_type;
tv->vval.v_string = NULL;
}
}
}
int have_new = FALSE;
for (int i = 0; i < classfunctions.ga_len; ++i)
if (STRCMP(((ufunc_T **)classfunctions.ga_data)[i]->uf_name,
"new") == 0)
{
have_new = TRUE;
break;
}
if (is_class && !is_abstract && !have_new)
{
// No new() method was defined, add the default constructor.
garray_T fga;
ga_init2(&fga, 1, 1000);
ga_concat(&fga, (char_u *)"new(");
for (int i = 0; i < cl->class_obj_member_count; ++i)
{
if (i > 0)
ga_concat(&fga, (char_u *)", ");
ga_concat(&fga, (char_u *)"this.");
ocmember_T *m = cl->class_obj_members + i;
ga_concat(&fga, (char_u *)m->ocm_name);
ga_concat(&fga, (char_u *)" = v:none");
}
ga_concat(&fga, (char_u *)")\nenddef\n");
ga_append(&fga, NUL);
exarg_T fea;
CLEAR_FIELD(fea);
fea.cmdidx = CMD_def;
fea.cmd = fea.arg = fga.ga_data;
garray_T lines_to_free;
ga_init2(&lines_to_free, sizeof(char_u *), 50);
ufunc_T *nf = define_function(&fea, NULL, &lines_to_free, CF_CLASS);
ga_clear_strings(&lines_to_free);
vim_free(fga.ga_data);
if (nf != NULL && ga_grow(&classfunctions, 1) == OK)
{
((ufunc_T **)classfunctions.ga_data)[classfunctions.ga_len]
= nf;
++classfunctions.ga_len;
nf->uf_flags |= FC_NEW;
nf->uf_ret_type = get_type_ptr(&type_list);
if (nf->uf_ret_type != NULL)
{
nf->uf_ret_type->tt_type = VAR_OBJECT;
nf->uf_ret_type->tt_class = cl;
nf->uf_ret_type->tt_argcount = 0;
nf->uf_ret_type->tt_args = NULL;
}
}
}