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LeOS-Genesis/external/badvpn/ncd/modules/value.c

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/**
* @file value.c
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @section DESCRIPTION
*
* Synopsis:
* value(value)
* value value::get(where)
* value value::try_get(where)
* value value::getpath(list path)
* value value::insert(where, what)
* value value::insert(what)
* value value::replace(where, what)
* value value::replace_this(value)
* value value::insert_undo(where, what)
* value value::insert_undo(what)
* value value::replace_undo(where, what)
* value value::replace_this_undo(value)
*
* Description:
* Value objects allow examining and manipulating values.
* These value objects are actually references to internal value structures, which
* may be shared between value objects.
*
* value(value) constructs a new value object from the given value.
*
* value::get(where) constructs a value object for the element at position 'where'
* (for a list), or the value corresponding to key 'where' (for a map). It is an
* error if the base value is not a list or a map, the index is out of bounds of
* the list, or the key does not exist in the map.
* The resulting value object is NOT a copy, and shares (part of) the same
* underlying value structure as the base value object. Deleting it will remove
* it from the list or map it is part of.
*
* value::try_get(where) is like get(), except that if any restriction on 'where'
* is violated, no error is triggered; instead, the value object is constructed
* as being deleted; this state is exposed via the 'exists' variable.
* This can be used to check for the presence of a key in a map, and in case it
* exists, allow access to the corresponding value without another get() statement.
*
* value::getpath(path) is like get(), except that it performs multiple
* consecutive resolutions. Also, if the path is an empty list, it performs
* no resulution at all.
*
* value::insert(where, what) constructs a value object by inserting into an
* existing value object.
* For lists, 'where' is the index of the element to insert before, or the length
* of the list to append to it.
* For maps, 'where' is the key to insert under. If the key already exists in the
* map, its value is replaced; any references to the old value however remain valid.
*
* value::insert(what) constructs a value object by appending to a list. An error
* is triggered if the base value is not a list. Assuming 'list' is a list value,
* list->insert(X) is equivalent to list->insert(list.length, X).
*
* value::replace(where, what) is like insert(), exept that, when inserting into a
* list, the value at the specified index is replaced with the new value (unless
* the index is equal to the length of the list).
*
* insert_undo() and replace_undo() are versions of insert() and replace() which
* attempt to revert the modifications when they deinitialize.
* Specifically, they work like that:
* - On initiialization, they take an internal reference to the value being replaced
* (if any; note that insert_undo() into a list never replaces a value).
* - On deinitialization, they remove the the inserted value from its parent (if there
* is one), and insert the old replaced value (to which a reference was kept) in that
* place (if any, and assuming it has not been deleted).
* Note that if the inserted value changes parents in between init and deinit, the
* result of undoing may be unexpected.
*
* Variables:
* (empty) - the value stored in the value object
* type - type of the value; "string", "list" or "map"
* length - number of elements in the list or map, or the number of bytes in a
* string
* keys - a list of keys in the map (only if the value is a map)
* exists - "true" or "false", reflecting whether the value object holds a value
* (is not in deleted state)
*
* Synopsis:
* value::remove(where)
* value::delete()
*
* Description:
* value::remove(where) removes from an existing value object.
* For lists, 'where' is the index of the element to remove, and must be in range.
* For maps, 'where' is the key to remove, and must be an existing key.
* In any case, any references to the removed value remain valid.
*
* value::delete() deletes the underlying value data of this value object.
* After delection, the value object enters a deleted state, which will cause any
* operation on it to fail. Any other value objects which referred to the same value
* or parts of it will too enter deleted state. If the value was an element
* in a list or map, is is removed from it.
*
* Synopsis:
* value value::substr(string start [, string length])
*
* Description:
* Constructs a string value by extracting a part of a string.
* 'start' specifies the index of the character (from zero) where the substring to
* extract starts, and must be <= the length of the string.
* 'length' specifies the maximum number of characters to extract, if given.
* The newly constructed value is a copy of the extracted substring.
* The value must be a string value.
*
* Synopsis:
* value::reset(what)
*
* Description:
* Effectively deconstructs and reconstructs the value object. More precisely,
* it builds a new value structure from 'what', possibly invokes a scheduled undo
* operation (as scheduled by insert_undo() and replace_undo()), sets up this
* value object to reference the newly built value structure, without any scheduled
* undo operation.
*
* Synopsis:
* value::append(append_val)
*
* Description:
* Only defined when the existing value object is a string or list. If it is a string,
* appends the string 'append_val' to this string value; 'append_val' must be a string.
* If is is a list, inserts 'append_val' to the end of this list value. Unlike insert(),
* the resulting append() object is not itself a value object (which in case of insert()
* serves as a reference to the new value).
*/
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <limits.h>
#include <inttypes.h>
#include <misc/offset.h>
#include <misc/debug.h>
#include <misc/balloc.h>
#include <structure/LinkedList0.h>
#include <structure/IndexedList.h>
#include <structure/SAvl.h>
#include <ncd/NCDModule.h>
#include <ncd/NCDStringIndex.h>
#include <ncd/static_strings.h>
#include <ncd/extra/value_utils.h>
#include <generated/blog_channel_ncd_value.h>
#define ModuleLog(i, ...) NCDModuleInst_Backend_Log((i), BLOG_CURRENT_CHANNEL, __VA_ARGS__)
#define ModuleString(i, id) ((i)->m->group->strings[(id)])
#define STOREDSTRING_TYPE (NCDVAL_STRING | (0 << 3))
#define IDSTRING_TYPE (NCDVAL_STRING | (1 << 3))
#define EXTERNALSTRING_TYPE (NCDVAL_STRING | (2 << 3))
#define COMPOSEDSTRING_TYPE (NCDVAL_STRING | (3 << 3))
struct value;
#include "value_maptree.h"
#include <structure/SAvl_decl.h>
struct valref {
struct value *v;
LinkedList0Node refs_list_node;
};
typedef void (*value_deinit_func) (void *deinit_data, NCDModuleInst *i);
struct instance {
NCDModuleInst *i;
struct valref ref;
value_deinit_func deinit_func;
void *deinit_data;
};
struct value {
LinkedList0 refs_list;
struct value *parent;
union {
struct {
IndexedListNode list_contents_il_node;
} list_parent;
struct {
NCDValMem key_mem;
NCDValRef key;
MapTreeNode maptree_node;
} map_parent;
};
int type;
union {
struct {
char *data;
size_t length;
} storedstring;
struct {
NCD_string_id_t id;
NCDStringIndex *string_index;
} idstring;
struct {
const char *data;
size_t length;
BRefTarget *ref_target;
} externalstring;
struct {
NCDValComposedStringResource resource;
size_t offset;
size_t length;
} composedstring;
struct {
IndexedList list_contents_il;
} list;
struct {
MapTree map_tree;
} map;
};
};
static const char * get_type_str (int type);
static void value_cleanup (struct value *v);
static void value_delete (struct value *v);
static struct value * value_init_storedstring (NCDModuleInst *i, const char *str, size_t len);
static struct value * value_init_idstring (NCDModuleInst *i, NCD_string_id_t id, NCDStringIndex *string_index);
static struct value * value_init_externalstring (NCDModuleInst *i, const char *data, size_t length, BRefTarget *ref_target);
static struct value * value_init_composedstring (NCDModuleInst *i, NCDValComposedStringResource resource, size_t offset, size_t length);
static int value_is_string (struct value *v);
static size_t value_string_length (struct value *v);
static void value_string_copy_out (struct value *v, char *dest);
static void value_string_set_allocd (struct value *v, char *data, size_t length);
static struct value * value_init_list (NCDModuleInst *i);
static size_t value_list_len (struct value *v);
static struct value * value_list_at (struct value *v, size_t index);
static size_t value_list_indexof (struct value *v, struct value *ev);
static int value_list_insert (NCDModuleInst *i, struct value *list, struct value *v, size_t index);
static void value_list_remove (struct value *list, struct value *v);
static struct value * value_init_map (NCDModuleInst *i);
static size_t value_map_len (struct value *map);
static struct value * value_map_at (struct value *map, size_t index);
static struct value * value_map_find (struct value *map, NCDValRef key);
static int value_map_insert (struct value *map, struct value *v, NCDValMem mem, NCDValSafeRef key, NCDModuleInst *i);
static void value_map_remove (struct value *map, struct value *v);
static void value_map_remove2 (struct value *map, struct value *v, NCDValMem *out_mem, NCDValSafeRef *out_key);
static struct value * value_init_fromvalue (NCDModuleInst *i, NCDValRef value);
static int value_to_value (NCDModuleInst *i, struct value *v, NCDValMem *mem, NCDValRef *out_value);
static struct value * value_get (NCDModuleInst *i, struct value *v, NCDValRef where, int no_error);
static struct value * value_get_path (NCDModuleInst *i, struct value *v, NCDValRef path);
static struct value * value_insert (NCDModuleInst *i, struct value *v, NCDValRef where, NCDValRef what, int is_replace, struct value **out_oldv);
static struct value * value_insert_simple (NCDModuleInst *i, struct value *v, NCDValRef what);
static int value_remove (NCDModuleInst *i, struct value *v, NCDValRef where);
static int value_append (NCDModuleInst *i, struct value *v, NCDValRef data);
static void valref_init (struct valref *r, struct value *v);
static void valref_free (struct valref *r);
static struct value * valref_val (struct valref *r);
static void valref_break (struct valref *r);
enum {STRING_EXISTS, STRING_KEYS};
static const char *strings[] = {
"exists", "keys", NULL
};
#include "value_maptree.h"
#include <structure/SAvl_impl.h>
static const char * get_type_str (int type)
{
switch (type) {
case STOREDSTRING_TYPE:
case IDSTRING_TYPE:
case EXTERNALSTRING_TYPE:
case COMPOSEDSTRING_TYPE:
return "string";
case NCDVAL_LIST:
return "list";
case NCDVAL_MAP:
return "map";
}
ASSERT(0)
return NULL;
}
static void value_cleanup (struct value *v)
{
if (v->parent || !LinkedList0_IsEmpty(&v->refs_list)) {
return;
}
switch (v->type) {
case STOREDSTRING_TYPE: {
BFree(v->storedstring.data);
} break;
case IDSTRING_TYPE: {
} break;
case EXTERNALSTRING_TYPE: {
if (v->externalstring.ref_target) {
BRefTarget_Deref(v->externalstring.ref_target);
}
} break;
case COMPOSEDSTRING_TYPE: {
if (v->composedstring.resource.ref_target) {
BRefTarget_Deref(v->composedstring.resource.ref_target);
}
} break;
case NCDVAL_LIST: {
while (value_list_len(v) > 0) {
struct value *ev = value_list_at(v, 0);
value_list_remove(v, ev);
value_cleanup(ev);
}
} break;
case NCDVAL_MAP: {
while (value_map_len(v) > 0) {
struct value *ev = value_map_at(v, 0);
value_map_remove(v, ev);
value_cleanup(ev);
}
} break;
default: ASSERT(0);
}
free(v);
}
static void value_delete (struct value *v)
{
if (v->parent) {
switch (v->parent->type) {
case NCDVAL_LIST: {
value_list_remove(v->parent, v);
} break;
case NCDVAL_MAP: {
value_map_remove(v->parent, v);
} break;
default: ASSERT(0);
}
}
LinkedList0Node *ln;
while (ln = LinkedList0_GetFirst(&v->refs_list)) {
struct valref *r = UPPER_OBJECT(ln, struct valref, refs_list_node);
ASSERT(r->v == v)
valref_break(r);
}
switch (v->type) {
case STOREDSTRING_TYPE: {
BFree(v->storedstring.data);
} break;
case IDSTRING_TYPE: {
} break;
case EXTERNALSTRING_TYPE: {
if (v->externalstring.ref_target) {
BRefTarget_Deref(v->externalstring.ref_target);
}
} break;
case COMPOSEDSTRING_TYPE: {
if (v->composedstring.resource.ref_target) {
BRefTarget_Deref(v->composedstring.resource.ref_target);
}
} break;
case NCDVAL_LIST: {
while (value_list_len(v) > 0) {
struct value *ev = value_list_at(v, 0);
value_delete(ev);
}
} break;
case NCDVAL_MAP: {
while (value_map_len(v) > 0) {
struct value *ev = value_map_at(v, 0);
value_delete(ev);
}
} break;
default: ASSERT(0);
}
free(v);
}
static struct value * value_init_storedstring (NCDModuleInst *i, const char *str, size_t len)
{
struct value *v = malloc(sizeof(*v));
if (!v) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
goto fail0;
}
LinkedList0_Init(&v->refs_list);
v->parent = NULL;
v->type = STOREDSTRING_TYPE;
if (!(v->storedstring.data = BAlloc(len))) {
ModuleLog(i, BLOG_ERROR, "BAlloc failed");
goto fail1;
}
if (str) {
memcpy(v->storedstring.data, str, len);
}
v->storedstring.length = len;
return v;
fail1:
free(v);
fail0:
return NULL;
}
static struct value * value_init_idstring (NCDModuleInst *i, NCD_string_id_t id, NCDStringIndex *string_index)
{
ASSERT(string_index == i->params->iparams->string_index)
struct value *v = malloc(sizeof(*v));
if (!v) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
goto fail0;
}
LinkedList0_Init(&v->refs_list);
v->parent = NULL;
v->type = IDSTRING_TYPE;
v->idstring.id = id;
v->idstring.string_index = string_index;
return v;
fail0:
return NULL;
}
static struct value * value_init_externalstring (NCDModuleInst *i, const char *data, size_t length, BRefTarget *ref_target)
{
struct value *v = malloc(sizeof(*v));
if (!v) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
goto fail0;
}
if (ref_target) {
if (!BRefTarget_Ref(ref_target)) {
ModuleLog(i, BLOG_ERROR, "BRefTarget_Ref failed");
goto fail1;
}
}
LinkedList0_Init(&v->refs_list);
v->parent = NULL;
v->type = EXTERNALSTRING_TYPE;
v->externalstring.data = data;
v->externalstring.length = length;
v->externalstring.ref_target = ref_target;
return v;
fail1:
free(v);
fail0:
return NULL;
}
static struct value * value_init_composedstring (NCDModuleInst *i, NCDValComposedStringResource resource, size_t offset, size_t length)
{
struct value *v = malloc(sizeof(*v));
if (!v) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
goto fail0;
}
if (resource.ref_target) {
if (!BRefTarget_Ref(resource.ref_target)) {
ModuleLog(i, BLOG_ERROR, "BRefTarget_Ref failed");
goto fail1;
}
}
LinkedList0_Init(&v->refs_list);
v->parent = NULL;
v->type = COMPOSEDSTRING_TYPE;
v->composedstring.resource = resource;
v->composedstring.offset = offset;
v->composedstring.length = length;
return v;
fail1:
free(v);
fail0:
return NULL;
}
static int value_is_string (struct value *v)
{
switch (v->type) {
case STOREDSTRING_TYPE:
case IDSTRING_TYPE:
case EXTERNALSTRING_TYPE:
case COMPOSEDSTRING_TYPE:
return 1;
default:
return 0;
}
}
static size_t value_string_length (struct value *v)
{
ASSERT(value_is_string(v))
switch (v->type) {
case STOREDSTRING_TYPE:
return v->storedstring.length;
case IDSTRING_TYPE:
return NCDStringIndex_Length(v->idstring.string_index, v->idstring.id);
case EXTERNALSTRING_TYPE:
return v->externalstring.length;
case COMPOSEDSTRING_TYPE:
return v->composedstring.length;
default:
ASSERT(0);
return 0;
}
}
static void value_string_copy_out (struct value *v, char *dest)
{
ASSERT(value_is_string(v))
switch (v->type) {
case STOREDSTRING_TYPE:
memcpy(dest, v->storedstring.data, v->storedstring.length);
break;
case IDSTRING_TYPE:
memcpy(dest, NCDStringIndex_Value(v->idstring.string_index, v->idstring.id), NCDStringIndex_Length(v->idstring.string_index, v->idstring.id));
break;
case EXTERNALSTRING_TYPE:
memcpy(dest, v->externalstring.data, v->externalstring.length);
break;
case COMPOSEDSTRING_TYPE: {
b_cstring cstr = NCDValComposedStringResource_Cstring(v->composedstring.resource, v->composedstring.offset, v->composedstring.length);
b_cstring_copy_to_buf(cstr, 0, cstr.length, dest);
} break;
default:
ASSERT(0);
}
}
static void value_string_set_allocd (struct value *v, char *data, size_t length)
{
ASSERT(value_is_string(v))
ASSERT(data)
switch (v->type) {
case STOREDSTRING_TYPE: {
BFree(v->storedstring.data);
} break;
case IDSTRING_TYPE: {
} break;
case EXTERNALSTRING_TYPE: {
if (v->externalstring.ref_target) {
BRefTarget_Deref(v->externalstring.ref_target);
}
} break;
case COMPOSEDSTRING_TYPE: {
if (v->composedstring.resource.ref_target) {
BRefTarget_Deref(v->composedstring.resource.ref_target);
}
} break;
default:
ASSERT(0);
}
v->type = STOREDSTRING_TYPE;
v->storedstring.data = data;
v->storedstring.length = length;
}
static struct value * value_init_list (NCDModuleInst *i)
{
struct value *v = malloc(sizeof(*v));
if (!v) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
return NULL;
}
LinkedList0_Init(&v->refs_list);
v->parent = NULL;
v->type = NCDVAL_LIST;
IndexedList_Init(&v->list.list_contents_il);
return v;
}
static size_t value_list_len (struct value *v)
{
ASSERT(v->type == NCDVAL_LIST)
return IndexedList_Count(&v->list.list_contents_il);
}
static struct value * value_list_at (struct value *v, size_t index)
{
ASSERT(v->type == NCDVAL_LIST)
ASSERT(index < value_list_len(v))
IndexedListNode *iln = IndexedList_GetAt(&v->list.list_contents_il, index);
ASSERT(iln)
struct value *e = UPPER_OBJECT(iln, struct value, list_parent.list_contents_il_node);
ASSERT(e->parent == v)
return e;
}
static size_t value_list_indexof (struct value *v, struct value *ev)
{
ASSERT(v->type == NCDVAL_LIST)
ASSERT(ev->parent == v)
uint64_t index = IndexedList_IndexOf(&v->list.list_contents_il, &ev->list_parent.list_contents_il_node);
ASSERT(index < value_list_len(v))
return index;
}
static int value_list_insert (NCDModuleInst *i, struct value *list, struct value *v, size_t index)
{
ASSERT(list->type == NCDVAL_LIST)
ASSERT(!v->parent)
ASSERT(index <= value_list_len(list))
if (value_list_len(list) == SIZE_MAX) {
ModuleLog(i, BLOG_ERROR, "list has too many elements");
return 0;
}
IndexedList_InsertAt(&list->list.list_contents_il, &v->list_parent.list_contents_il_node, index);
v->parent = list;
return 1;
}
static void value_list_remove (struct value *list, struct value *v)
{
ASSERT(list->type == NCDVAL_LIST)
ASSERT(v->parent == list)
IndexedList_Remove(&list->list.list_contents_il, &v->list_parent.list_contents_il_node);
v->parent = NULL;
}
static struct value * value_init_map (NCDModuleInst *i)
{
struct value *v = malloc(sizeof(*v));
if (!v) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
return NULL;
}
LinkedList0_Init(&v->refs_list);
v->parent = NULL;
v->type = NCDVAL_MAP;
MapTree_Init(&v->map.map_tree);
return v;
}
static size_t value_map_len (struct value *map)
{
ASSERT(map->type == NCDVAL_MAP)
return MapTree_Count(&map->map.map_tree, 0);
}
static struct value * value_map_at (struct value *map, size_t index)
{
ASSERT(map->type == NCDVAL_MAP)
ASSERT(index < value_map_len(map))
struct value *e = MapTree_GetAt(&map->map.map_tree, 0, index);
ASSERT(e)
ASSERT(e->parent == map)
return e;
}
static struct value * value_map_find (struct value *map, NCDValRef key)
{
ASSERT(map->type == NCDVAL_MAP)
ASSERT(NCDVal_Type(key))
struct value *e = MapTree_LookupExact(&map->map.map_tree, 0, key);
ASSERT(!e || e->parent == map)
return e;
}
static int value_map_insert (struct value *map, struct value *v, NCDValMem mem, NCDValSafeRef key, NCDModuleInst *i)
{
ASSERT(map->type == NCDVAL_MAP)
ASSERT(!v->parent)
ASSERT((NCDVal_Type(NCDVal_FromSafe(&mem, key)), 1))
ASSERT(!value_map_find(map, NCDVal_FromSafe(&mem, key)))
if (value_map_len(map) == SIZE_MAX) {
ModuleLog(i, BLOG_ERROR, "map has too many elements");
return 0;
}
v->map_parent.key_mem = mem;
v->map_parent.key = NCDVal_FromSafe(&v->map_parent.key_mem, key);
int res = MapTree_Insert(&map->map.map_tree, 0, v, NULL);
ASSERT_EXECUTE(res)
v->parent = map;
return 1;
}
static void value_map_remove (struct value *map, struct value *v)
{
ASSERT(map->type == NCDVAL_MAP)
ASSERT(v->parent == map)
MapTree_Remove(&map->map.map_tree, 0, v);
NCDValMem_Free(&v->map_parent.key_mem);
v->parent = NULL;
}
static void value_map_remove2 (struct value *map, struct value *v, NCDValMem *out_mem, NCDValSafeRef *out_key)
{
ASSERT(map->type == NCDVAL_MAP)
ASSERT(v->parent == map)
ASSERT(out_mem)
ASSERT(out_key)
MapTree_Remove(&map->map.map_tree, 0, v);
*out_mem = v->map_parent.key_mem;
*out_key = NCDVal_ToSafe(v->map_parent.key);
v->parent = NULL;
}
static struct value * value_init_fromvalue (NCDModuleInst *i, NCDValRef value)
{
ASSERT((NCDVal_Type(value), 1))
struct value *v;
switch (NCDVal_Type(value)) {
case NCDVAL_STRING: {
if (NCDVal_IsStoredString(value)) {
v = value_init_storedstring(i, NCDVal_StringData(value), NCDVal_StringLength(value));
} else if (NCDVal_IsIdString(value)) {
v = value_init_idstring(i, NCDVal_IdStringId(value), NCDVal_IdStringStringIndex(value));
} else if (NCDVal_IsExternalString(value)) {
v = value_init_externalstring(i, NCDVal_StringData(value), NCDVal_StringLength(value), NCDVal_ExternalStringTarget(value));
} else if (NCDVal_IsComposedString(value)) {
v = value_init_composedstring(i, NCDVal_ComposedStringResource(value), NCDVal_ComposedStringOffset(value), NCDVal_StringLength(value));
} else {
size_t length = NCDVal_StringLength(value);
v = value_init_storedstring(i, NULL, length);
if (v) {
NCDVal_StringCopyOut(value, 0, length, v->storedstring.data);
}
}
if (!v) {
goto fail0;
}
} break;
case NCDVAL_LIST: {
if (!(v = value_init_list(i))) {
goto fail0;
}
size_t count = NCDVal_ListCount(value);
for (size_t j = 0; j < count; j++) {
struct value *ev = value_init_fromvalue(i, NCDVal_ListGet(value, j));
if (!ev) {
goto fail1;
}
if (!value_list_insert(i, v, ev, value_list_len(v))) {
value_cleanup(ev);
goto fail1;
}
}
} break;
case NCDVAL_MAP: {
if (!(v = value_init_map(i))) {
goto fail0;
}
for (NCDValMapElem e = NCDVal_MapFirst(value); !NCDVal_MapElemInvalid(e); e = NCDVal_MapNext(value, e)) {
NCDValRef ekey = NCDVal_MapElemKey(value, e);
NCDValRef eval = NCDVal_MapElemVal(value, e);
NCDValMem key_mem;
NCDValMem_Init(&key_mem);
NCDValRef key = NCDVal_NewCopy(&key_mem, ekey);
if (NCDVal_IsInvalid(key)) {
NCDValMem_Free(&key_mem);
goto fail1;
}
struct value *ev = value_init_fromvalue(i, eval);
if (!ev) {
NCDValMem_Free(&key_mem);
goto fail1;
}
if (!value_map_insert(v, ev, key_mem, NCDVal_ToSafe(key), i)) {
NCDValMem_Free(&key_mem);
value_cleanup(ev);
goto fail1;
}
}
} break;
default:
ASSERT(0);
return NULL;
}
return v;
fail1:
value_cleanup(v);
fail0:
return NULL;
}
static int value_to_value (NCDModuleInst *i, struct value *v, NCDValMem *mem, NCDValRef *out_value)
{
ASSERT(mem)
ASSERT(out_value)
switch (v->type) {
case STOREDSTRING_TYPE: {
*out_value = NCDVal_NewStringBin(mem, (const uint8_t *)v->storedstring.data, v->storedstring.length);
if (NCDVal_IsInvalid(*out_value)) {
goto fail;
}
} break;
case IDSTRING_TYPE: {
*out_value = NCDVal_NewIdString(mem, v->idstring.id, v->idstring.string_index);
if (NCDVal_IsInvalid(*out_value)) {
goto fail;
}
} break;
case EXTERNALSTRING_TYPE: {
*out_value = NCDVal_NewExternalString(mem, v->externalstring.data, v->externalstring.length, v->externalstring.ref_target);
if (NCDVal_IsInvalid(*out_value)) {
goto fail;
}
} break;
case COMPOSEDSTRING_TYPE: {
*out_value = NCDVal_NewComposedString(mem, v->composedstring.resource, v->composedstring.offset, v->composedstring.length);
if (NCDVal_IsInvalid(*out_value)) {
goto fail;
}
} break;
case NCDVAL_LIST: {
*out_value = NCDVal_NewList(mem, value_list_len(v));
if (NCDVal_IsInvalid(*out_value)) {
goto fail;
}
for (size_t index = 0; index < value_list_len(v); index++) {
NCDValRef eval;
if (!value_to_value(i, value_list_at(v, index), mem, &eval)) {
goto fail;
}
if (!NCDVal_ListAppend(*out_value, eval)) {
goto fail;
}
}
} break;
case NCDVAL_MAP: {
*out_value = NCDVal_NewMap(mem, value_map_len(v));
if (NCDVal_IsInvalid(*out_value)) {
goto fail;
}
for (size_t index = 0; index < value_map_len(v); index++) {
struct value *ev = value_map_at(v, index);
NCDValRef key = NCDVal_NewCopy(mem, ev->map_parent.key);
if (NCDVal_IsInvalid(key)) {
goto fail;
}
NCDValRef val;
if (!value_to_value(i, ev, mem, &val)) {
goto fail;
}
int inserted;
if (!NCDVal_MapInsert(*out_value, key, val, &inserted)) {
goto fail;
}
ASSERT_EXECUTE(inserted)
}
} break;
default: ASSERT(0);
}
return 1;
fail:
return 0;
}
static struct value * value_get (NCDModuleInst *i, struct value *v, NCDValRef where, int no_error)
{
ASSERT((NCDVal_Type(where), 1))
switch (v->type) {
case STOREDSTRING_TYPE:
case IDSTRING_TYPE:
case EXTERNALSTRING_TYPE:
case COMPOSEDSTRING_TYPE: {
if (!no_error) ModuleLog(i, BLOG_ERROR, "cannot resolve into a string");
goto fail;
} break;
case NCDVAL_LIST: {
uintmax_t index;
if (!NCDVal_IsString(where) || !ncd_read_uintmax(where, &index)) {
if (!no_error) ModuleLog(i, BLOG_ERROR, "index is not a valid number (resolving into list)");
goto fail;
}
if (index >= value_list_len(v)) {
if (!no_error) ModuleLog(i, BLOG_ERROR, "index is out of bounds (resolving into list)");
goto fail;
}
v = value_list_at(v, index);
} break;
case NCDVAL_MAP: {
v = value_map_find(v, where);
if (!v) {
if (!no_error) ModuleLog(i, BLOG_ERROR, "key does not exist (resolving into map)");
goto fail;
}
} break;
default: ASSERT(0);
}
return v;
fail:
return NULL;
}
static struct value * value_get_path (NCDModuleInst *i, struct value *v, NCDValRef path)
{
ASSERT(NCDVal_IsList(path))
size_t count = NCDVal_ListCount(path);
for (size_t j = 0; j < count; j++) {
if (!(v = value_get(i, v, NCDVal_ListGet(path, j), 0))) {
goto fail;
}
}
return v;
fail:
return NULL;
}
static struct value * value_insert (NCDModuleInst *i, struct value *v, NCDValRef where, NCDValRef what, int is_replace, struct value **out_oldv)
{
ASSERT(v)
ASSERT((NCDVal_Type(where), 1))
ASSERT((NCDVal_Type(what), 1))
ASSERT(is_replace == !!is_replace)
struct value *nv = value_init_fromvalue(i, what);
if (!nv) {
goto fail0;
}
struct value *oldv = NULL;
switch (v->type) {
case STOREDSTRING_TYPE:
case IDSTRING_TYPE:
case EXTERNALSTRING_TYPE:
case COMPOSEDSTRING_TYPE: {
ModuleLog(i, BLOG_ERROR, "cannot insert into a string");
goto fail1;
} break;
case NCDVAL_LIST: {
uintmax_t index;
if (!NCDVal_IsString(where) || !ncd_read_uintmax(where, &index)) {
ModuleLog(i, BLOG_ERROR, "index is not a valid number (inserting into list)");
goto fail1;
}
if (index > value_list_len(v)) {
ModuleLog(i, BLOG_ERROR, "index is out of bounds (inserting into list)");
goto fail1;
}
if (is_replace && index < value_list_len(v)) {
oldv = value_list_at(v, index);
value_list_remove(v, oldv);
int res = value_list_insert(i, v, nv, index);
ASSERT_EXECUTE(res)
} else {
if (!value_list_insert(i, v, nv, index)) {
goto fail1;
}
}
} break;
case NCDVAL_MAP: {
oldv = value_map_find(v, where);
if (!oldv && value_map_len(v) == SIZE_MAX) {
ModuleLog(i, BLOG_ERROR, "map has too many elements");
goto fail1;
}
NCDValMem key_mem;
NCDValMem_Init(&key_mem);
NCDValRef key = NCDVal_NewCopy(&key_mem, where);
if (NCDVal_IsInvalid(key)) {
NCDValMem_Free(&key_mem);
goto fail1;
}
if (oldv) {
value_map_remove(v, oldv);
}
int res = value_map_insert(v, nv, key_mem, NCDVal_ToSafe(key), i);
ASSERT_EXECUTE(res)
} break;
default: ASSERT(0);
}
if (out_oldv) {
*out_oldv = oldv;
}
else if (oldv) {
value_cleanup(oldv);
}
return nv;
fail1:
value_cleanup(nv);
fail0:
return NULL;
}
static struct value * value_insert_simple (NCDModuleInst *i, struct value *v, NCDValRef what)
{
ASSERT(v)
ASSERT((NCDVal_Type(what), 1))
struct value *nv = value_init_fromvalue(i, what);
if (!nv) {
goto fail0;
}
switch (v->type) {
case NCDVAL_LIST: {
if (!value_list_insert(i, v, nv, value_list_len(v))) {
goto fail1;
}
} break;
default:
ModuleLog(i, BLOG_ERROR, "one-argument insert is only defined for lists");
return NULL;
}
return nv;
fail1:
value_cleanup(nv);
fail0:
return NULL;
}
static int value_remove (NCDModuleInst *i, struct value *v, NCDValRef where)
{
ASSERT(v)
ASSERT((NCDVal_Type(where), 1))
switch (v->type) {
case STOREDSTRING_TYPE:
case IDSTRING_TYPE:
case EXTERNALSTRING_TYPE:
case COMPOSEDSTRING_TYPE: {
ModuleLog(i, BLOG_ERROR, "cannot remove from a string");
goto fail;
} break;
case NCDVAL_LIST: {
uintmax_t index;
if (!NCDVal_IsString(where) || !ncd_read_uintmax(where, &index)) {
ModuleLog(i, BLOG_ERROR, "index is not a valid number (removing from list)");
goto fail;
}
if (index >= value_list_len(v)) {
ModuleLog(i, BLOG_ERROR, "index is out of bounds (removing from list)");
goto fail;
}
struct value *ov = value_list_at(v, index);
value_list_remove(v, ov);
value_cleanup(ov);
} break;
case NCDVAL_MAP: {
struct value *ov = value_map_find(v, where);
if (!ov) {
ModuleLog(i, BLOG_ERROR, "key does not exist (removing from map)");
goto fail;
}
value_map_remove(v, ov);
value_cleanup(ov);
} break;
default: ASSERT(0);
}
return 1;
fail:
return 0;
}
static int value_append (NCDModuleInst *i, struct value *v, NCDValRef data)
{
ASSERT(v)
ASSERT((NCDVal_Type(data), 1))
switch (v->type) {
case STOREDSTRING_TYPE: {
if (!NCDVal_IsString(data)) {
ModuleLog(i, BLOG_ERROR, "cannot append non-string to string");
return 0;
}
size_t append_length = NCDVal_StringLength(data);
if (append_length > SIZE_MAX - v->storedstring.length) {
ModuleLog(i, BLOG_ERROR, "too much data to append");
return 0;
}
size_t new_length = v->storedstring.length + append_length;
char *new_string = BRealloc(v->storedstring.data, new_length);
if (!new_string) {
ModuleLog(i, BLOG_ERROR, "BRealloc failed");
return 0;
}
NCDVal_StringCopyOut(data, 0, append_length, new_string + v->storedstring.length);
v->storedstring.data = new_string;
v->storedstring.length = new_length;
} break;
case IDSTRING_TYPE:
case EXTERNALSTRING_TYPE:
case COMPOSEDSTRING_TYPE: {
if (!NCDVal_IsString(data)) {
ModuleLog(i, BLOG_ERROR, "cannot append non-string to string");
return 0;
}
size_t length = value_string_length(v);
size_t append_length = NCDVal_StringLength(data);
if (append_length > SIZE_MAX - length) {
ModuleLog(i, BLOG_ERROR, "too much data to append");
return 0;
}
size_t new_length = length + append_length;
char *new_string = BAlloc(new_length);
if (!new_string) {
ModuleLog(i, BLOG_ERROR, "BAlloc failed");
return 0;
}
value_string_copy_out(v, new_string);
NCDVal_StringCopyOut(data, 0, append_length, new_string + length);
value_string_set_allocd(v, new_string, new_length);
} break;
case NCDVAL_LIST: {
struct value *nv = value_init_fromvalue(i, data);
if (!nv) {
return 0;
}
if (!value_list_insert(i, v, nv, value_list_len(v))) {
value_cleanup(nv);
return 0;
}
} break;
default:
ModuleLog(i, BLOG_ERROR, "append is only defined for strings and lists");
return 0;
}
return 1;
}
static void valref_init (struct valref *r, struct value *v)
{
r->v = v;
if (v) {
LinkedList0_Prepend(&v->refs_list, &r->refs_list_node);
}
}
static void valref_free (struct valref *r)
{
if (r->v) {
LinkedList0_Remove(&r->v->refs_list, &r->refs_list_node);
value_cleanup(r->v);
}
}
static struct value * valref_val (struct valref *r)
{
return r->v;
}
static void valref_break (struct valref *r)
{
ASSERT(r->v)
LinkedList0_Remove(&r->v->refs_list, &r->refs_list_node);
r->v = NULL;
}
static void func_new_common (void *vo, NCDModuleInst *i, struct value *v, value_deinit_func deinit_func, void *deinit_data)
{
struct instance *o = vo;
o->i = i;
// init value references
valref_init(&o->ref, v);
// remember deinit
o->deinit_func = deinit_func;
o->deinit_data = deinit_data;
NCDModuleInst_Backend_Up(i);
return;
}
static void func_die (void *vo)
{
struct instance *o = vo;
// deinit
if (o->deinit_func) {
o->deinit_func(o->deinit_data, o->i);
}
// free value reference
valref_free(&o->ref);
NCDModuleInst_Backend_Dead(o->i);
}
static int func_getvar2 (void *vo, NCD_string_id_t name, NCDValMem *mem, NCDValRef *out)
{
struct instance *o = vo;
struct value *v = valref_val(&o->ref);
if (name == ModuleString(o->i, STRING_EXISTS)) {
*out = ncd_make_boolean(mem, !!v, o->i->params->iparams->string_index);
return 1;
}
if (name != NCD_STRING_TYPE && name != NCD_STRING_LENGTH &&
name != ModuleString(o->i, STRING_KEYS) && name != NCD_STRING_EMPTY) {
return 0;
}
if (!v) {
ModuleLog(o->i, BLOG_ERROR, "value was deleted");
return 0;
}
if (name == NCD_STRING_TYPE) {
*out = NCDVal_NewString(mem, get_type_str(v->type));
}
else if (name == NCD_STRING_LENGTH) {
size_t len = 0; // to remove warning
switch (v->type) {
case NCDVAL_LIST:
len = value_list_len(v);
break;
case NCDVAL_MAP:
len = value_map_len(v);
break;
default:
ASSERT(value_is_string(v))
len = value_string_length(v);
break;
}
*out = ncd_make_uintmax(mem, len);
}
else if (name == ModuleString(o->i, STRING_KEYS)) {
if (v->type != NCDVAL_MAP) {
ModuleLog(o->i, BLOG_ERROR, "value is not a map (reading keys variable)");
return 0;
}
*out = NCDVal_NewList(mem, value_map_len(v));
if (NCDVal_IsInvalid(*out)) {
goto fail;
}
for (size_t j = 0; j < value_map_len(v); j++) {
struct value *ev = value_map_at(v, j);
NCDValRef key = NCDVal_NewCopy(mem, ev->map_parent.key);
if (NCDVal_IsInvalid(key)) {
goto fail;
}
if (!NCDVal_ListAppend(*out, key)) {
goto fail;
}
}
}
else if (name == NCD_STRING_EMPTY) {
if (!value_to_value(o->i, v, mem, out)) {
return 0;
}
}
else {
ASSERT(0);
}
return 1;
fail:
*out = NCDVal_NewInvalid();
return 1;
}
static void func_new_value (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef value_arg;
if (!NCDVal_ListRead(params->args, 1, &value_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct value *v = value_init_fromvalue(i, value_arg);
if (!v) {
goto fail0;
}
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_get (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef where_arg;
if (!NCDVal_ListRead(params->args, 1, &where_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct value *v = value_get(i, mov, where_arg, 0);
if (!v) {
goto fail0;
}
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_try_get (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef where_arg;
if (!NCDVal_ListRead(params->args, 1, &where_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct value *v = value_get(i, mov, where_arg, 1);
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_getpath (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef path_arg;
if (!NCDVal_ListRead(params->args, 1, &path_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
if (!NCDVal_IsList(path_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong type");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct value *v = value_get_path(i, mov, path_arg);
if (!v) {
goto fail0;
}
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_insert_replace_common (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params, int is_replace)
{
NCDValRef where_arg = NCDVal_NewInvalid();
NCDValRef what_arg;
if (!(!is_replace && NCDVal_ListRead(params->args, 1, &what_arg)) &&
!NCDVal_ListRead(params->args, 2, &where_arg, &what_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct value *v;
if (NCDVal_IsInvalid(where_arg)) {
v = value_insert_simple(i, mov, what_arg);
} else {
v = value_insert(i, mov, where_arg, what_arg, is_replace, NULL);
}
if (!v) {
goto fail0;
}
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_insert (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
func_new_insert_replace_common(vo, i, params, 0);
}
static void func_new_replace (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
func_new_insert_replace_common(vo, i, params, 1);
}
struct insert_undo_deinit_data {
struct valref val_ref;
struct valref oldval_ref;
};
static void undo_deinit_func (struct insert_undo_deinit_data *data, NCDModuleInst *i)
{
struct value *val = valref_val(&data->val_ref);
struct value *oldval = valref_val(&data->oldval_ref);
if (val && val->parent && (!oldval || !oldval->parent)) {
// get parent
struct value *parent = val->parent;
// remove this value from parent and restore saved one (or none)
switch (parent->type) {
case NCDVAL_LIST: {
size_t index = value_list_indexof(parent, val);
value_list_remove(parent, val);
if (oldval) {
int res = value_list_insert(i, parent, oldval, index);
ASSERT_EXECUTE(res)
}
} break;
case NCDVAL_MAP: {
NCDValMem key_mem;
NCDValSafeRef key;
value_map_remove2(parent, val, &key_mem, &key);
if (oldval) {
int res = value_map_insert(parent, oldval, key_mem, key, i);
ASSERT_EXECUTE(res)
} else {
NCDValMem_Free(&key_mem);
}
} break;
default: ASSERT(0);
}
}
valref_free(&data->oldval_ref);
valref_free(&data->val_ref);
free(data);
}
static void func_new_insert_replace_undo_common (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params, int is_replace)
{
NCDValRef where_arg = NCDVal_NewInvalid();
NCDValRef what_arg;
if (!(!is_replace && NCDVal_ListRead(params->args, 1, &what_arg)) &&
!NCDVal_ListRead(params->args, 2, &where_arg, &what_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct insert_undo_deinit_data *data = malloc(sizeof(*data));
if (!data) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
goto fail0;
}
struct value *oldv;
struct value *v;
if (NCDVal_IsInvalid(where_arg)) {
oldv = NULL;
v = value_insert_simple(i, mov, what_arg);
} else {
v = value_insert(i, mov, where_arg, what_arg, is_replace, &oldv);
}
if (!v) {
goto fail1;
}
valref_init(&data->val_ref, v);
valref_init(&data->oldval_ref, oldv);
func_new_common(vo, i, v, (value_deinit_func)undo_deinit_func, data);
return;
fail1:
free(data);
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_insert_undo (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
func_new_insert_replace_undo_common(vo, i, params, 0);
}
static void func_new_replace_undo (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
func_new_insert_replace_undo_common(vo, i, params, 1);
}
static void func_new_replace_this (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef value_arg;
if (!NCDVal_ListRead(params->args, 1, &value_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct value *v = value_init_fromvalue(i, value_arg);
if (!v) {
goto fail0;
}
if (mov->parent) {
struct value *parent = mov->parent;
switch (parent->type) {
case NCDVAL_LIST: {
size_t index = value_list_indexof(parent, mov);
value_list_remove(parent, mov);
int res = value_list_insert(i, parent, v, index);
ASSERT_EXECUTE(res)
} break;
case NCDVAL_MAP: {
NCDValMem key_mem;
NCDValSafeRef key;
value_map_remove2(parent, mov, &key_mem, &key);
int res = value_map_insert(parent, v, key_mem, key, i);
ASSERT_EXECUTE(res)
} break;
default: ASSERT(0);
}
value_cleanup(mov);
}
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_replace_this_undo (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef value_arg;
if (!NCDVal_ListRead(params->args, 1, &value_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
struct value *v = value_init_fromvalue(i, value_arg);
if (!v) {
goto fail0;
}
struct insert_undo_deinit_data *data = malloc(sizeof(*data));
if (!data) {
ModuleLog(i, BLOG_ERROR, "malloc failed");
goto fail1;
}
valref_init(&data->val_ref, v);
valref_init(&data->oldval_ref, mov);
if (mov->parent) {
struct value *parent = mov->parent;
switch (parent->type) {
case NCDVAL_LIST: {
size_t index = value_list_indexof(parent, mov);
value_list_remove(parent, mov);
int res = value_list_insert(i, parent, v, index);
ASSERT_EXECUTE(res)
} break;
case NCDVAL_MAP: {
NCDValMem key_mem;
NCDValSafeRef key;
value_map_remove2(parent, mov, &key_mem, &key);
int res = value_map_insert(parent, v, key_mem, key, i);
ASSERT_EXECUTE(res)
} break;
default: ASSERT(0);
}
}
func_new_common(vo, i, v, (value_deinit_func)undo_deinit_func, data);
return;
fail1:
value_cleanup(v);
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void func_new_substr (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef start_arg;
NCDValRef length_arg = NCDVal_NewInvalid();
if (!NCDVal_ListRead(params->args, 1, &start_arg) &&
!NCDVal_ListRead(params->args, 2, &start_arg, &length_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
if (!NCDVal_IsString(start_arg) || (!NCDVal_IsInvalid(length_arg) && !NCDVal_IsString(length_arg))) {
ModuleLog(i, BLOG_ERROR, "wrong type");
goto fail0;
}
uintmax_t start;
if (!ncd_read_uintmax(start_arg, &start)) {
ModuleLog(i, BLOG_ERROR, "start is not a number");
goto fail0;
}
uintmax_t length = UINTMAX_MAX;
if (!NCDVal_IsInvalid(length_arg) && !ncd_read_uintmax(length_arg, &length)) {
ModuleLog(i, BLOG_ERROR, "length is not a number");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
if (!value_is_string(mov)) {
ModuleLog(i, BLOG_ERROR, "value is not a string");
goto fail0;
}
size_t string_len = value_string_length(mov);
if (start > string_len) {
ModuleLog(i, BLOG_ERROR, "start is out of range");
goto fail0;
}
size_t remain = string_len - start;
size_t amount = length < remain ? length : remain;
struct value *v = NULL;
switch (mov->type) {
case STOREDSTRING_TYPE: {
v = value_init_storedstring(i, mov->storedstring.data + start, amount);
} break;
case IDSTRING_TYPE: {
v = value_init_storedstring(i, NCDStringIndex_Value(mov->idstring.string_index, mov->idstring.id) + start, amount);
} break;
case EXTERNALSTRING_TYPE: {
v = value_init_externalstring(i, mov->externalstring.data + start, amount, mov->externalstring.ref_target);
} break;
case COMPOSEDSTRING_TYPE: {
v = value_init_composedstring(i, mov->composedstring.resource, mov->composedstring.offset + start, amount);
} break;
default:
ASSERT(0);
}
if (!v) {
goto fail0;
}
func_new_common(vo, i, v, NULL, NULL);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void remove_func_new (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef where_arg;
if (!NCDVal_ListRead(params->args, 1, &where_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
if (!value_remove(i, mov, where_arg)) {
goto fail0;
}
NCDModuleInst_Backend_Up(i);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void delete_func_new (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
if (!NCDVal_ListRead(params->args, 0)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
value_delete(mov);
NCDModuleInst_Backend_Up(i);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void reset_func_new (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef what_arg;
if (!NCDVal_ListRead(params->args, 1, &what_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
// build value from argument
struct value *newv = value_init_fromvalue(i, what_arg);
if (!newv) {
goto fail0;
}
// deinit
if (mo->deinit_func) {
mo->deinit_func(mo->deinit_data, i);
}
// free value reference
valref_free(&mo->ref);
// set up value reference
valref_init(&mo->ref, newv);
// set no deinit function
mo->deinit_func = NULL;
NCDModuleInst_Backend_Up(i);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static void append_func_new (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
{
NCDValRef data_arg;
if (!NCDVal_ListRead(params->args, 1, &data_arg)) {
ModuleLog(i, BLOG_ERROR, "wrong arity");
goto fail0;
}
struct instance *mo = NCDModuleInst_Backend_GetUser((NCDModuleInst *)params->method_user);
struct value *mov = valref_val(&mo->ref);
if (!mov) {
ModuleLog(i, BLOG_ERROR, "value was deleted");
goto fail0;
}
if (!value_append(i, mov, data_arg)) {
goto fail0;
}
NCDModuleInst_Backend_Up(i);
return;
fail0:
NCDModuleInst_Backend_DeadError(i);
}
static struct NCDModule modules[] = {
{
.type = "value",
.func_new2 = func_new_value,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::get",
.base_type = "value",
.func_new2 = func_new_get,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::try_get",
.base_type = "value",
.func_new2 = func_new_try_get,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::getpath",
.base_type = "value",
.func_new2 = func_new_getpath,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::insert",
.base_type = "value",
.func_new2 = func_new_insert,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::replace",
.base_type = "value",
.func_new2 = func_new_replace,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::replace_this",
.base_type = "value",
.func_new2 = func_new_replace_this,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::insert_undo",
.base_type = "value",
.func_new2 = func_new_insert_undo,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::replace_undo",
.base_type = "value",
.func_new2 = func_new_replace_undo,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::replace_this_undo",
.base_type = "value",
.func_new2 = func_new_replace_this_undo,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::remove",
.func_new2 = remove_func_new,
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::delete",
.func_new2 = delete_func_new,
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::reset",
.func_new2 = reset_func_new,
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::substr",
.base_type = "value",
.func_new2 = func_new_substr,
.func_die = func_die,
.func_getvar2 = func_getvar2,
.alloc_size = sizeof(struct instance),
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = "value::append",
.func_new2 = append_func_new,
.flags = NCDMODULE_FLAG_ACCEPT_NON_CONTINUOUS_STRINGS
}, {
.type = NULL
}
};
const struct NCDModuleGroup ncdmodule_value = {
.modules = modules,
.strings = strings
};
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