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arangodb/arangod/V8Server/v8-shape-conv.cpp

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////////////////////////////////////////////////////////////////////////////////
/// @brief V8 utility functions
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////
#include "v8-shape-conv.h"
#include "Basics/StringUtils.h"
#include "Basics/conversions.h"
#include "Basics/logging.h"
#include "Basics/string-buffer.h"
#include "Basics/tri-strings.h"
#include "V8/v8-json.h"
#include "V8/v8-utils.h"
#include "VocBase/VocShaper.h"
using namespace std;
using namespace triagens::basics;
// #define DEBUG_JSON_SHAPER 1
// -----------------------------------------------------------------------------
// --SECTION-- forward declarations
// -----------------------------------------------------------------------------
static int FillShapeValueJson (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::Value> const json,
size_t level,
set<int>& seenHashes,
vector<v8::Handle<v8::Object>>& seenObjects,
bool create);
static v8::Handle<v8::Value> JsonShapeData (v8::Isolate* isolate,
v8::Handle<v8::Value>&,
VocShaper*,
TRI_shape_t const*,
char const*,
size_t);
static v8::Handle<v8::Value> JsonShapeData (v8::Isolate* isolate,
VocShaper*,
TRI_shape_t const*,
char const*,
size_t);
// -----------------------------------------------------------------------------
// --SECTION-- private types
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief shape cache (caches pointer to last shape)
////////////////////////////////////////////////////////////////////////////////
typedef struct shape_cache_s {
TRI_shape_sid_t _sid;
TRI_shape_t const* _shape;
}
shape_cache_t;
// -----------------------------------------------------------------------------
// --SECTION-- CONVERSION FUNCTIONS
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
// --SECTION-- private functions
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a null into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueNull (VocShaper* shaper,
TRI_shape_value_t* dst) {
dst->_type = TRI_SHAPE_NULL;
dst->_sid = BasicShapes::TRI_SHAPE_SID_NULL;
dst->_fixedSized = true;
dst->_size = 0;
dst->_value = nullptr;
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a boolean into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueBoolean (VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::Boolean> const json) {
TRI_shape_boolean_t* ptr;
dst->_type = TRI_SHAPE_BOOLEAN;
dst->_sid = BasicShapes::TRI_SHAPE_SID_BOOLEAN;
dst->_fixedSized = true;
dst->_size = sizeof(TRI_shape_boolean_t);
dst->_value = (char*) (ptr = (TRI_shape_boolean_t*) TRI_Allocate(shaper->memoryZone(), dst->_size, false));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
*ptr = json->Value() ? 1 : 0;
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a boolean into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueBoolean (VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::BooleanObject> const json) {
TRI_shape_boolean_t* ptr;
dst->_type = TRI_SHAPE_BOOLEAN;
dst->_sid = BasicShapes::TRI_SHAPE_SID_BOOLEAN;
dst->_fixedSized = true;
dst->_size = sizeof(TRI_shape_boolean_t);
dst->_value = (char*) (ptr = (TRI_shape_boolean_t*) TRI_Allocate(shaper->memoryZone(), dst->_size, false));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
*ptr = json->BooleanValue() ? 1 : 0;
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a number into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueNumber (VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::Number> const json) {
TRI_shape_number_t* ptr;
dst->_type = TRI_SHAPE_NUMBER;
dst->_sid = BasicShapes::TRI_SHAPE_SID_NUMBER;
dst->_fixedSized = true;
dst->_size = sizeof(TRI_shape_number_t);
dst->_value = (char*) (ptr = (TRI_shape_number_t*) TRI_Allocate(shaper->memoryZone(), dst->_size, false));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
*ptr = json->Value();
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a number into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueNumber (VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::NumberObject> const json) {
TRI_shape_number_t* ptr;
dst->_type = TRI_SHAPE_NUMBER;
dst->_sid = BasicShapes::TRI_SHAPE_SID_NUMBER;
dst->_fixedSized = true;
dst->_size = sizeof(TRI_shape_number_t);
dst->_value = (char*) (ptr = (TRI_shape_number_t*) TRI_Allocate(shaper->memoryZone(), dst->_size, false));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
*ptr = json->NumberValue();
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a string into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueString (VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::String> const json) {
char* ptr;
TRI_Utf8ValueNFC str(TRI_UNKNOWN_MEM_ZONE, json);
if (*str == nullptr) {
// empty string
dst->_type = TRI_SHAPE_SHORT_STRING;
dst->_sid = BasicShapes::TRI_SHAPE_SID_SHORT_STRING;
dst->_fixedSized = true;
dst->_size = sizeof(TRI_shape_length_short_string_t) + TRI_SHAPE_SHORT_STRING_CUT;
dst->_value = (ptr = (char*) TRI_Allocate(shaper->memoryZone(), dst->_size, true));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
* ((TRI_shape_length_short_string_t*) ptr) = 1;
}
else {
size_t const size = str.length();
if (size < TRI_SHAPE_SHORT_STRING_CUT) { // includes '\0'
dst->_type = TRI_SHAPE_SHORT_STRING;
dst->_sid = BasicShapes::TRI_SHAPE_SID_SHORT_STRING;
dst->_fixedSized = true;
dst->_size = sizeof(TRI_shape_length_short_string_t) + TRI_SHAPE_SHORT_STRING_CUT;
dst->_value = (ptr = (char*) TRI_Allocate(shaper->memoryZone(), dst->_size, true));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
* ((TRI_shape_length_short_string_t*) ptr) = (TRI_shape_length_short_string_t) size + 1;
memcpy(ptr + sizeof(TRI_shape_length_short_string_t), *str, size + 1);
}
else {
dst->_type = TRI_SHAPE_LONG_STRING;
dst->_sid = BasicShapes::TRI_SHAPE_SID_LONG_STRING;
dst->_fixedSized = false;
dst->_size = sizeof(TRI_shape_length_long_string_t) + size + 1;
dst->_value = (ptr = (char*) TRI_Allocate(shaper->memoryZone(), dst->_size, false));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
* ((TRI_shape_length_long_string_t*) ptr) = (TRI_shape_length_long_string_t) size + 1;
memcpy(ptr + sizeof(TRI_shape_length_long_string_t), *str, size + 1);
}
}
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a json list into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueList (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::Array> const json,
size_t level,
set<int>& seenHashes,
vector<v8::Handle<v8::Object>>& seenObjects,
bool create) {
size_t total;
TRI_shape_value_t* values;
TRI_shape_value_t* p;
TRI_shape_value_t* e;
bool hs;
bool hl;
TRI_shape_sid_t s;
TRI_shape_sid_t l;
TRI_shape_size_t* offsets;
TRI_shape_size_t offset;
TRI_shape_t const* found;
char* ptr;
// check for special case "empty list"
uint32_t n = json->Length();
if (n == 0) {
dst->_type = TRI_SHAPE_LIST;
dst->_sid = BasicShapes::TRI_SHAPE_SID_LIST;
dst->_fixedSized = false;
dst->_size = sizeof(TRI_shape_length_list_t);
dst->_value = (ptr = static_cast<char*>(TRI_Allocate(shaper->memoryZone(), dst->_size, false)));
if (dst->_value == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
* (TRI_shape_length_list_t*) ptr = 0;
return TRI_ERROR_NO_ERROR;
}
// convert into TRI_shape_value_t array
p = (values = static_cast<TRI_shape_value_t*>(TRI_Allocate(shaper->memoryZone(), sizeof(TRI_shape_value_t) * n, true)));
if (p == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
total = 0;
e = values + n;
for (uint32_t i = 0; i < n; ++i, ++p) {
v8::Handle<v8::Value> el = json->Get(i);
int res = FillShapeValueJson(isolate, shaper, p, el, level + 1, seenHashes, seenObjects, create);
if (res != TRI_ERROR_NO_ERROR) {
for (e = p, p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return res;
}
total += static_cast<size_t>(p->_size);
}
// check if this list is homoegenous
hs = true;
hl = true;
s = values[0]._sid;
l = values[0]._size;
p = values;
for (; p < e; ++p) {
if (p->_sid != s) {
hs = false;
break;
}
if (p->_size != l) {
hl = false;
}
}
// homogeneous sized
if (hs && hl) {
auto shape = static_cast<TRI_homogeneous_sized_list_shape_t*>(TRI_Allocate(shaper->memoryZone(), sizeof(TRI_homogeneous_sized_list_shape_t), true));
if (shape == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_OUT_OF_MEMORY;
}
shape->base._size = sizeof(TRI_homogeneous_sized_list_shape_t);
shape->base._type = TRI_SHAPE_HOMOGENEOUS_SIZED_LIST;
shape->base._dataSize = TRI_SHAPE_SIZE_VARIABLE;
shape->_sidEntry = s;
shape->_sizeEntry = l;
found = shaper->findShape(&shape->base, create);
if (found == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
TRI_Free(shaper->memoryZone(), shape);
LOG_TRACE("shaper failed to find shape of type %d", (int) shape->base._type);
if (! create) {
return TRI_RESULT_ELEMENT_NOT_FOUND;
}
return TRI_ERROR_INTERNAL;
}
TRI_ASSERT(found != nullptr);
dst->_type = found->_type;
dst->_sid = found->_sid;
dst->_fixedSized = false;
dst->_size = sizeof(TRI_shape_length_list_t) + total;
dst->_value = (ptr = static_cast<char*>(TRI_Allocate(shaper->memoryZone(), dst->_size, false)));
if (dst->_value == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_OUT_OF_MEMORY;
}
// copy sub-objects into data space
* (TRI_shape_length_list_t*) ptr = (TRI_shape_length_list_t) n;
ptr += sizeof(TRI_shape_length_list_t);
for (p = values; p < e; ++p) {
memcpy(ptr, p->_value, static_cast<size_t>(p->_size));
ptr += p->_size;
}
}
// homogeneous
else if (hs) {
auto shape = static_cast<TRI_homogeneous_list_shape_t*>(TRI_Allocate(shaper->memoryZone(), sizeof(TRI_homogeneous_list_shape_t), true));
if (shape == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_OUT_OF_MEMORY;
}
shape->base._size = sizeof(TRI_homogeneous_list_shape_t);
shape->base._type = TRI_SHAPE_HOMOGENEOUS_LIST;
shape->base._dataSize = TRI_SHAPE_SIZE_VARIABLE;
shape->_sidEntry = s;
// if found returns non-NULL, it will free the shape!!
found = shaper->findShape(&shape->base, create);
if (found == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
LOG_TRACE("shaper failed to find shape %d", (int) shape->base._type);
TRI_Free(shaper->memoryZone(), values);
TRI_Free(shaper->memoryZone(), shape);
if (! create) {
return TRI_RESULT_ELEMENT_NOT_FOUND;
}
return TRI_ERROR_INTERNAL;
}
TRI_ASSERT(found != nullptr);
dst->_type = found->_type;
dst->_sid = found->_sid;
offset = sizeof(TRI_shape_length_list_t) + (n + 1) * sizeof(TRI_shape_size_t);
dst->_fixedSized = false;
dst->_size = offset + total;
dst->_value = (ptr = static_cast<char*>(TRI_Allocate(shaper->memoryZone(), dst->_size, true)));
if (dst->_value == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_OUT_OF_MEMORY;
}
// copy sub-objects into data space
* (TRI_shape_length_list_t*) ptr = (TRI_shape_length_list_t) n;
ptr += sizeof(TRI_shape_length_list_t);
offsets = (TRI_shape_size_t*) ptr;
ptr += (n + 1) * sizeof(TRI_shape_size_t);
for (p = values; p < e; ++p) {
*offsets++ = offset;
offset += p->_size;
memcpy(ptr, p->_value, static_cast<size_t>(p->_size));
ptr += p->_size;
}
*offsets = offset;
}
// in-homogeneous
else {
dst->_type = TRI_SHAPE_LIST;
dst->_sid = BasicShapes::TRI_SHAPE_SID_LIST;
offset =
sizeof(TRI_shape_length_list_t)
+ n * sizeof(TRI_shape_sid_t)
+ (n + 1) * sizeof(TRI_shape_size_t);
dst->_fixedSized = false;
dst->_size = offset + total;
dst->_value = (ptr = (char*) TRI_Allocate(shaper->memoryZone(), dst->_size, true));
if (dst->_value == nullptr) {
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_OUT_OF_MEMORY;
}
// copy sub-objects into data space
* (TRI_shape_length_list_t*) ptr = (TRI_shape_length_list_t) n;
ptr += sizeof(TRI_shape_length_list_t);
TRI_shape_sid_t* sids = (TRI_shape_sid_t*) ptr;
ptr += n * sizeof(TRI_shape_sid_t);
offsets = (TRI_shape_size_t*) ptr;
ptr += (n + 1) * sizeof(TRI_shape_size_t);
for (p = values; p < e; ++p) {
*sids++ = p->_sid;
*offsets++ = offset;
offset += p->_size;
memcpy(ptr, p->_value, static_cast<size_t>(p->_size));
ptr += p->_size;
}
*offsets = offset;
}
// free TRI_shape_value_t array
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a json array into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueArray (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::Object> const json,
size_t level,
set<int>& seenHashes,
vector<v8::Handle<v8::Object>>& seenObjects,
bool create) {
v8::HandleScope scope(isolate);
TRI_shape_value_t* values;
TRI_shape_value_t* p;
TRI_shape_value_t* e;
TRI_array_shape_t* a;
TRI_shape_sid_t* sids;
TRI_shape_aid_t* aids;
TRI_shape_size_t* offsetsF;
TRI_shape_size_t* offsetsV;
TRI_shape_size_t offset;
TRI_shape_t const* found;
char* ptr;
// number of attributes
v8::Handle<v8::Array> names = json->GetOwnPropertyNames();
uint32_t n = names->Length();
// convert into TRI_shape_value_t array
p = (values = static_cast<TRI_shape_value_t*>(TRI_Allocate(shaper->memoryZone(), n * sizeof(TRI_shape_value_t), true)));
if (p == nullptr) {
return TRI_ERROR_OUT_OF_MEMORY;
}
size_t total = 0;
size_t f = 0;
size_t v = 0;
for (uint32_t i = 0; i < n; ++i, ++p) {
v8::Handle<v8::Value> key = names->Get(i);
// first find an identifier for the name
TRI_Utf8ValueNFC keyStr(TRI_UNKNOWN_MEM_ZONE, key);
if (*keyStr == 0 || keyStr.length() == 0) {
--p;
continue;
}
if ((*keyStr)[0] == '_' && level == 0) {
// on top level, strip reserved attributes before shaping
char const* k = (*keyStr);
if (strcmp(k, "_key") == 0 ||
strcmp(k, "_rev") == 0 ||
strcmp(k, "_id") == 0 ||
strcmp(k, "_from") == 0 ||
strcmp(k, "_to") == 0) {
// found a reserved attribute - discard it
--p;
continue;
}
}
if (create) {
p->_aid = shaper->findOrCreateAttributeByName(*keyStr);
}
else {
p->_aid = shaper->lookupAttributeByName(*keyStr);
}
int res;
// convert value
if (p->_aid == 0) {
if (create) {
res = TRI_ERROR_INTERNAL;
}
else {
res = TRI_RESULT_ELEMENT_NOT_FOUND;
}
}
else {
v8::Handle<v8::Value> val = json->Get(key);
res = FillShapeValueJson(isolate, shaper, p, val, level + 1, seenHashes, seenObjects, create);
}
if (res != TRI_ERROR_NO_ERROR) {
for (e = p, p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return res;
}
total += static_cast<size_t>(p->_size);
// count fixed and variable sized values
if (p->_fixedSized) {
++f;
}
else {
++v;
}
}
// adjust n
n = (uint32_t) (f + v);
// add variable offset table size
total += (v + 1) * sizeof(TRI_shape_size_t);
// now sort the shape entries
if (n > 1) {
TRI_SortShapeValues(values, (size_t) n);
}
#ifdef DEBUG_JSON_SHAPER
printf("shape values\n------------\ntotal: %u, fixed: %u, variable: %u\n",
(unsigned int) n,
(unsigned int) f,
(unsigned int) v);
TRI_PrintShapeValues(values, n);
printf("\n");
#endif
// generate shape structure
size_t const totalSize =
sizeof(TRI_array_shape_t)
+ n * sizeof(TRI_shape_sid_t)
+ n * sizeof(TRI_shape_aid_t)
+ (f + 1) * sizeof(TRI_shape_size_t);
a = (TRI_array_shape_t*) (ptr = (char*) TRI_Allocate(shaper->memoryZone(), totalSize, true));
if (ptr == nullptr) {
e = values + n;
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
return TRI_ERROR_OUT_OF_MEMORY;
}
a->base._type = TRI_SHAPE_ARRAY;
a->base._size = (TRI_shape_size_t) totalSize;
a->base._dataSize = (v == 0) ? total : TRI_SHAPE_SIZE_VARIABLE;
a->_fixedEntries = f;
a->_variableEntries = v;
ptr += sizeof(TRI_array_shape_t);
// array of shape identifiers
sids = (TRI_shape_sid_t*) ptr;
ptr += n * sizeof(TRI_shape_sid_t);
// array of attribute identifiers
aids = (TRI_shape_aid_t*) ptr;
ptr += n * sizeof(TRI_shape_aid_t);
// array of offsets for fixed part (within the shape)
offset = (v + 1) * sizeof(TRI_shape_size_t);
offsetsF = (TRI_shape_size_t*) ptr;
// fill destination (except sid)
dst->_type = TRI_SHAPE_ARRAY;
dst->_fixedSized = true;
dst->_size = total;
dst->_value = (ptr = static_cast<char*>(TRI_Allocate(shaper->memoryZone(), dst->_size, true)));
if (ptr == nullptr) {
e = values + n;
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
TRI_Free(shaper->memoryZone(), a);
return TRI_ERROR_OUT_OF_MEMORY;
}
// array of offsets for variable part (within the value)
offsetsV = (TRI_shape_size_t*) ptr;
ptr += (v + 1) * sizeof(TRI_shape_size_t);
// and fill in attributes
e = values + n;
for (p = values; p < e; ++p) {
*aids++ = p->_aid;
*sids++ = p->_sid;
memcpy(ptr, p->_value, static_cast<size_t>(p->_size));
ptr += p->_size;
dst->_fixedSized &= p->_fixedSized;
if (p->_fixedSized) {
*offsetsF++ = offset;
offset += p->_size;
*offsetsF = offset;
}
else {
*offsetsV++ = offset;
offset += p->_size;
*offsetsV = offset;
}
}
// free TRI_shape_value_t array
for (p = values; p < e; ++p) {
if (p->_value != nullptr) {
TRI_Free(shaper->memoryZone(), p->_value);
}
}
TRI_Free(shaper->memoryZone(), values);
// lookup this shape
found = shaper->findShape(&a->base, create);
if (found == nullptr) {
LOG_TRACE("shaper failed to find shape %d", (int) a->base._type);
TRI_Free(shaper->memoryZone(), dst->_value);
TRI_Free(shaper->memoryZone(), a);
if (! create) {
return TRI_RESULT_ELEMENT_NOT_FOUND;
}
return TRI_ERROR_INTERNAL;
}
// and finally add the sid
dst->_sid = found->_sid;
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a json object into TRI_shape_value_t
////////////////////////////////////////////////////////////////////////////////
static int FillShapeValueJson (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_value_t* dst,
v8::Handle<v8::Value> const json,
size_t level,
set<int>& seenHashes,
vector<v8::Handle<v8::Object>>& seenObjects,
bool create) {
v8::HandleScope scope(isolate);
if (json->IsRegExp() || json->IsFunction() || json->IsExternal()) {
LOG_TRACE("shaper failed because regexp/function/external/date object cannot be converted");
return TRI_ERROR_BAD_PARAMETER;
}
if (json->IsNull() || json->IsUndefined()) {
return FillShapeValueNull(shaper, dst);
}
if (json->IsBoolean()) {
return FillShapeValueBoolean(shaper, dst, json->ToBoolean());
}
if (json->IsBooleanObject()) {
return FillShapeValueBoolean(shaper, dst, v8::Handle<v8::BooleanObject>::Cast(json));
}
if (json->IsNumber()) {
return FillShapeValueNumber(shaper, dst, json->ToNumber());
}
if (json->IsNumberObject()) {
return FillShapeValueNumber(shaper, dst, v8::Handle<v8::NumberObject>::Cast(json));
}
if (json->IsString()) {
return FillShapeValueString(shaper, dst, json->ToString());
}
if (json->IsStringObject()) {
return FillShapeValueString(shaper, dst, v8::Handle<v8::StringObject>::Cast(json)->ValueOf());
}
else if (json->IsArray()) {
return FillShapeValueList(isolate, shaper, dst, v8::Handle<v8::Array>::Cast(json), level, seenHashes, seenObjects, create);
}
if (json->IsObject()) {
v8::Handle<v8::Object> o = json->ToObject();
v8::Handle<v8::String> toJsonString = TRI_V8_PAIR_STRING("toJSON", 6);
if (o->Has(toJsonString)) {
v8::Handle<v8::Value> func = o->Get(toJsonString);
if (func->IsFunction()) {
v8::Handle<v8::Function> toJson = v8::Handle<v8::Function>::Cast(func);
v8::Handle<v8::Value> args;
v8::Handle<v8::Value> result = toJson->Call(o, 0, &args);
if (! result.IsEmpty()) {
return FillShapeValueString(shaper, dst, result->ToString());
}
}
}
// fall-through intentional
// check for cycles
int hash = o->GetIdentityHash();
if (seenHashes.find(hash) != seenHashes.end()) {
for (auto it = seenObjects.begin(); it != seenObjects.end(); ++it) {
if (json->StrictEquals(*it)) {
return TRI_ERROR_ARANGO_SHAPER_FAILED;
}
}
}
else {
seenHashes.insert(hash);
}
seenObjects.push_back(o);
int res = FillShapeValueArray(isolate, shaper, dst, json->ToObject(), level, seenHashes, seenObjects, create);
seenObjects.pop_back();
// cannot remove hash value from seenHashes because multiple objects might have the same
// hash values (collisions)
return res;
}
LOG_TRACE("shaper failed to convert object");
return TRI_ERROR_BAD_PARAMETER;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data null blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataNull (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
return v8::Null(isolate);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data boolean blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataBoolean (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
bool v = (* (TRI_shape_boolean_t const*) data) != 0;
return v8::Boolean::New(isolate, v);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data number blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataNumber (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
TRI_shape_number_t v = * (TRI_shape_number_t const*) data;
return v8::Number::New(isolate, v);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data short string blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataShortString (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
TRI_shape_length_short_string_t l = * (TRI_shape_length_short_string_t const*) data;
data += sizeof(TRI_shape_length_short_string_t);
return TRI_V8_PAIR_STRING(data, l - 1);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data long string blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataLongString (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
TRI_shape_length_long_string_t l = * (TRI_shape_length_long_string_t const*) data;
data += sizeof(TRI_shape_length_long_string_t);
return TRI_V8_PAIR_STRING(data, l - 1);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief merges a data array blob into an existing json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataArray (v8::Isolate* isolate,
v8::Handle<v8::Value>& value,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
v8::EscapableHandleScope scope(isolate);
TRI_array_shape_t const* s;
TRI_shape_aid_t const* aids;
TRI_shape_sid_t const* sids;
TRI_shape_size_t const* offsetsF;
TRI_shape_size_t const* offsetsV;
TRI_shape_size_t f;
TRI_shape_size_t i;
TRI_shape_size_t n;
TRI_shape_size_t v;
shape_cache_t shapeCache;
char const* qtr;
v8::Handle<v8::Object> array = v8::Handle<v8::Object>::Cast(value);
s = (TRI_array_shape_t const*) shape;
f = s->_fixedEntries;
v = s->_variableEntries;
n = f + v;
qtr = (char const*) shape;
qtr += sizeof(TRI_array_shape_t);
sids = (TRI_shape_sid_t const*) qtr;
qtr += n * sizeof(TRI_shape_sid_t);
aids = (TRI_shape_aid_t const*) qtr;
qtr += n * sizeof(TRI_shape_aid_t);
offsetsF = (TRI_shape_size_t const*) qtr;
shapeCache._sid = 0;
shapeCache._shape = 0;
for (i = 0; i < f; ++i, ++sids, ++aids, ++offsetsF) {
TRI_shape_sid_t sid = *sids;
TRI_shape_t const* subshape;
if (sid == shapeCache._sid && shapeCache._sid > 0) {
subshape = shapeCache._shape;
}
else {
shapeCache._shape = subshape = shaper->lookupShapeId(sid);
shapeCache._sid = sid;
}
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
continue;
}
TRI_shape_aid_t aid = *aids;
char const* name = shaper->lookupAttributeId(aid);
if (name == nullptr) {
LOG_WARNING("cannot find attribute #%u", (unsigned int) aid);
continue;
}
const TRI_shape_size_t offset = *offsetsF;
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(offsetsF[1] - offset));
array->ForceSet(TRI_V8_STRING(name), element);
}
offsetsV = (TRI_shape_size_t const*) data;
for (i = 0; i < v; ++i, ++sids, ++aids, ++offsetsV) {
TRI_shape_sid_t sid = *sids;
TRI_shape_t const* subshape;
if (sid == shapeCache._sid && shapeCache._sid > 0) {
subshape = shapeCache._shape;
}
else {
shapeCache._shape = subshape = shaper->lookupShapeId(sid);
shapeCache._sid = sid;
}
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
continue;
}
TRI_shape_aid_t aid = *aids;
char const* name = shaper->lookupAttributeId(aid);
if (name == nullptr) {
LOG_WARNING("cannot find attribute #%u", (unsigned int) aid);
continue;
}
const TRI_shape_size_t offset = *offsetsV;
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(offsetsV[1] - offset));
array->ForceSet(TRI_V8_STRING(name), element);
}
return scope.Escape<v8::Value>(array);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data array blob into a new json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataArray (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
v8::EscapableHandleScope scope(isolate);
TRI_array_shape_t const* s;
TRI_shape_aid_t const* aids;
TRI_shape_sid_t const* sids;
TRI_shape_size_t const* offsetsF;
TRI_shape_size_t const* offsetsV;
TRI_shape_size_t f;
TRI_shape_size_t i;
TRI_shape_size_t n;
TRI_shape_size_t v;
shape_cache_t shapeCache;
char const* qtr;
v8::Handle<v8::Object> array;
s = (TRI_array_shape_t const*) shape;
f = s->_fixedEntries;
v = s->_variableEntries;
n = f + v;
qtr = (char const*) shape;
array = v8::Object::New(isolate);
qtr += sizeof(TRI_array_shape_t);
sids = (TRI_shape_sid_t const*) qtr;
qtr += n * sizeof(TRI_shape_sid_t);
aids = (TRI_shape_aid_t const*) qtr;
qtr += n * sizeof(TRI_shape_aid_t);
offsetsF = (TRI_shape_size_t const*) qtr;
shapeCache._sid = 0;
shapeCache._shape = 0;
for (i = 0; i < f; ++i, ++sids, ++aids, ++offsetsF) {
TRI_shape_sid_t sid = *sids;
TRI_shape_t const* subshape;
if (sid == shapeCache._sid && shapeCache._sid > 0) {
subshape = shapeCache._shape;
}
else {
shapeCache._shape = subshape = shaper->lookupShapeId(sid);
shapeCache._sid = sid;
}
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
continue;
}
TRI_shape_aid_t aid = *aids;
char const* name = shaper->lookupAttributeId(aid);
if (name == nullptr) {
LOG_WARNING("cannot find attribute #%u", (unsigned int) aid);
continue;
}
const TRI_shape_size_t offset = *offsetsF;
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(offsetsF[1] - offset));
array->ForceSet(TRI_V8_STRING(name), element);
}
offsetsV = (TRI_shape_size_t const*) data;
for (i = 0; i < v; ++i, ++sids, ++aids, ++offsetsV) {
TRI_shape_sid_t sid = *sids;
TRI_shape_t const* subshape;
if (sid == shapeCache._sid && shapeCache._sid > 0) {
subshape = shapeCache._shape;
}
else {
shapeCache._shape = subshape = shaper->lookupShapeId(sid);
shapeCache._sid = sid;
}
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
continue;
}
TRI_shape_aid_t aid = *aids;
char const* name = shaper->lookupAttributeId(aid);
if (name == nullptr) {
LOG_WARNING("cannot find attribute #%u", (unsigned int) aid);
continue;
}
const TRI_shape_size_t offset = *offsetsV;
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(offsetsV[1] - offset));
array->ForceSet(TRI_V8_STRING(name), element);
}
return scope.Escape<v8::Value>(array);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data list blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataList (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
v8::EscapableHandleScope scope(isolate);
TRI_shape_length_list_t i;
TRI_shape_length_list_t l;
TRI_shape_sid_t const* sids;
TRI_shape_size_t const* offsets;
shape_cache_t shapeCache;
char const* ptr;
ptr = data;
l = * (TRI_shape_length_list_t const*) ptr;
if (l == 0) {
return scope.Escape<v8::Value>(v8::Array::New(isolate, 0));
}
shapeCache._sid = 0;
shapeCache._shape = 0;
v8::Handle<v8::Array> list = v8::Array::New(isolate, l);
ptr += sizeof(TRI_shape_length_list_t);
sids = (TRI_shape_sid_t const*) ptr;
ptr += l * sizeof(TRI_shape_sid_t);
offsets = (TRI_shape_size_t const*) ptr;
for (i = 0; i < l; ++i, ++sids, ++offsets) {
TRI_shape_sid_t sid = *sids;
TRI_shape_t const* subshape;
if (sid == shapeCache._sid && shapeCache._sid > 0) {
subshape = shapeCache._shape;
}
else {
shapeCache._shape = subshape = shaper->lookupShapeId(sid);
shapeCache._sid = sid;
}
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
continue;
}
const TRI_shape_size_t offset = *offsets;
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(offsets[1] - offset));
list->Set((uint32_t) i, element);
}
return scope.Escape<v8::Value>(list);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data homogeneous list blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataHomogeneousList (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
v8::EscapableHandleScope scope(isolate);
TRI_homogeneous_list_shape_t const* s;
TRI_shape_length_list_t i;
TRI_shape_length_list_t l;
TRI_shape_sid_t sid;
TRI_shape_size_t const* offsets;
char const* ptr;
TRI_shape_t const* subshape;
s = (TRI_homogeneous_list_shape_t const*) shape;
sid = s->_sidEntry;
ptr = data;
l = * (TRI_shape_length_list_t const*) ptr;
ptr += sizeof(TRI_shape_length_list_t);
offsets = (TRI_shape_size_t const*) ptr;
subshape = shaper->lookupShapeId(sid);
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
return scope.Escape<v8::Value>(v8::Array::New(isolate));
}
v8::Handle<v8::Array> list = v8::Array::New(isolate, l);
for (i = 0; i < l; ++i, ++offsets) {
TRI_shape_size_t offset = *offsets;
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(offsets[1] - offset));
list->Set((uint32_t) i, element);
}
return scope.Escape<v8::Value>(list);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data homogeneous sized list blob into a json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeDataHomogeneousSizedList (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
v8::EscapableHandleScope scope(isolate);
TRI_homogeneous_sized_list_shape_t const* s;
TRI_shape_length_list_t i;
TRI_shape_length_list_t l;
TRI_shape_sid_t sid;
TRI_shape_size_t length;
char const* ptr;
TRI_shape_t const* subshape;
s = (TRI_homogeneous_sized_list_shape_t const*) shape;
ptr = data;
l = * (TRI_shape_length_list_t const*) ptr;
if (l == 0) {
return scope.Escape<v8::Value>(v8::Array::New(isolate));
}
sid = s->_sidEntry;
length = s->_sizeEntry;
subshape = shaper->lookupShapeId(sid);
if (subshape == nullptr) {
LOG_WARNING("cannot find shape #%u", (unsigned int) sid);
return scope.Escape<v8::Value>(v8::Array::New(isolate));
}
TRI_shape_size_t offset = sizeof(TRI_shape_length_list_t);
v8::Handle<v8::Array> list = v8::Array::New(isolate, l);
for (i = 0; i < l; ++i, offset += length) {
v8::Handle<v8::Value> element = JsonShapeData(isolate, shaper, subshape, data + offset, static_cast<size_t>(length));
list->Set((uint32_t) i, element);
}
return scope.Escape<v8::Value>(list);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief merges a data blob into an existing json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeData (v8::Isolate* isolate,
v8::Handle<v8::Value>& value,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
if (shape == nullptr) {
v8::EscapableHandleScope scope(isolate);
return scope.Escape<v8::Value>(v8::Null(isolate));
}
TRI_ASSERT(shape->_type == TRI_SHAPE_ARRAY);
return JsonShapeDataArray(isolate, value, shaper, shape, data, size);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a data blob into a new json object
////////////////////////////////////////////////////////////////////////////////
static v8::Handle<v8::Value> JsonShapeData (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
if (shape == nullptr) {
v8::EscapableHandleScope scope(isolate);
return scope.Escape<v8::Value>(v8::Null(isolate));
}
switch (shape->_type) {
case TRI_SHAPE_NULL:
return JsonShapeDataNull(isolate, shaper, shape, data, size);
case TRI_SHAPE_BOOLEAN:
return JsonShapeDataBoolean(isolate, shaper, shape, data, size);
case TRI_SHAPE_NUMBER:
return JsonShapeDataNumber(isolate, shaper, shape, data, size);
case TRI_SHAPE_SHORT_STRING:
return JsonShapeDataShortString(isolate, shaper, shape, data, size);
case TRI_SHAPE_LONG_STRING:
return JsonShapeDataLongString(isolate, shaper, shape, data, size);
case TRI_SHAPE_ARRAY:
return JsonShapeDataArray(isolate, shaper, shape, data, size);
case TRI_SHAPE_LIST:
return JsonShapeDataList(isolate, shaper, shape, data, size);
case TRI_SHAPE_HOMOGENEOUS_LIST:
return JsonShapeDataHomogeneousList(isolate, shaper, shape, data, size);
case TRI_SHAPE_HOMOGENEOUS_SIZED_LIST:
return JsonShapeDataHomogeneousSizedList(isolate, shaper, shape, data, size);
}
{
v8::EscapableHandleScope scope(isolate);
return scope.Escape<v8::Value>(v8::Null(isolate));
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a TRI_shaped_json_t into an existing V8 object
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> TRI_JsonShapeData (v8::Isolate* isolate,
v8::Handle<v8::Value> value,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
return JsonShapeData(isolate, value, shaper, shape, data, size);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a TRI_shaped_json_t into a new V8 object
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> TRI_JsonShapeData (v8::Isolate* isolate,
VocShaper* shaper,
TRI_shape_t const* shape,
char const* data,
size_t size) {
return JsonShapeData(isolate, shaper, shape, data, size);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a V8 object to a TRI_shaped_json_t
////////////////////////////////////////////////////////////////////////////////
TRI_shaped_json_t* TRI_ShapedJsonV8Object (v8::Isolate* isolate,
v8::Handle<v8::Value> const object,
VocShaper* shaper,
bool create) {
TRI_shape_value_t dst;
std::set<int> seenHashes;
std::vector<v8::Handle<v8::Object>> seenObjects;
int res = FillShapeValueJson(isolate, shaper, &dst, object, 0, seenHashes, seenObjects, create);
if (res != TRI_ERROR_NO_ERROR) {
if (res == TRI_RESULT_ELEMENT_NOT_FOUND) {
TRI_set_errno(res);
}
else {
TRI_set_errno(TRI_ERROR_ARANGO_SHAPER_FAILED);
}
return nullptr;
}
TRI_shaped_json_t* shaped = static_cast<TRI_shaped_json_t*>(TRI_Allocate(shaper->memoryZone(), sizeof(TRI_shaped_json_t), false));
if (shaped == nullptr) {
return nullptr;
}
shaped->_sid = dst._sid;
shaped->_data.length = (uint32_t) dst._size;
shaped->_data.data = dst._value;
return shaped;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a V8 object to a TRI_shaped_json_t in place
////////////////////////////////////////////////////////////////////////////////
int TRI_FillShapedJsonV8Object (v8::Isolate* isolate,
v8::Handle<v8::Value> const object,
TRI_shaped_json_t* result,
VocShaper* shaper,
bool create) {
TRI_shape_value_t dst;
std::set<int> seenHashes;
std::vector<v8::Handle<v8::Object>> seenObjects;
int res = FillShapeValueJson(isolate, shaper, &dst, object, 0, seenHashes, seenObjects, create);
if (res != TRI_ERROR_NO_ERROR) {
if (res != TRI_RESULT_ELEMENT_NOT_FOUND) {
res = TRI_ERROR_BAD_PARAMETER;
}
return TRI_set_errno(res);
}
result->_sid = dst._sid;
result->_data.length = (uint32_t) dst._size;
result->_data.data = dst._value;
return TRI_ERROR_NO_ERROR;
}
// -----------------------------------------------------------------------------
// --SECTION-- END-OF-FILE
// -----------------------------------------------------------------------------
// Local Variables:
// mode: outline-minor
// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
// End:
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