fbshipit-source-id: d0f4b1833968aae403b114119f4e8cda184361c9
This commit is contained in:
Daniel Buchele
20
iOS/SonarKit/FBCxxUtils/FBCxxFollyDynamicConvert.h
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20
iOS/SonarKit/FBCxxUtils/FBCxxFollyDynamicConvert.h
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/*
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* Copyright (c) 2004-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the LICENSE
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* file in the root directory of this source tree.
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*
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*/
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#pragma once
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#import <Foundation/Foundation.h>
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#include <folly/dynamic.h>
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namespace facebook {
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namespace cxxutils {
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folly::dynamic convertIdToFollyDynamic(id json);
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id convertFollyDynamicToId(const folly::dynamic &dyn);
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} }
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@@ -1,97 +1,17 @@
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// Copyright 2004-present Facebook. All Rights Reserved.
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#import "FBCxxFollyDynamicConvert.h"
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#import <objc/runtime.h>
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namespace facebook {
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namespace cxxutils {
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/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the LICENSE
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* file in the root directory of this source tree.
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*
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* The implementation is taken from RCTFollyConvert(https://fburl.com/vzw8ql2q)
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*/
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#include "SKUtils.h"
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#include <math.h>
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#import <Foundation/Foundation.h>
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using namespace facebook::sonar;
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@implementation SKUtils
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+ (folly::dynamic)convertIdToFollyDynamic:(id)json
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{
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if (json == nil || json == (id)kCFNull) {
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return nullptr;
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} else if ([json isKindOfClass:[NSNumber class]]) {
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const char *objCType = [json objCType];
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switch (objCType[0]) {
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// This is a c++ bool or C99 _Bool. On some platforms, BOOL is a bool.
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case _C_BOOL:
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return (bool) [json boolValue];
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case _C_CHR:
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// On some platforms, objc BOOL is a signed char, but it
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// might also be a small number. Use the same hack JSC uses
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// to distinguish them:
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// https://phabricator.intern.facebook.com/diffusion/FBS/browse/master/fbobjc/xplat/third-party/jsc/safari-600-1-4-17/JavaScriptCore/API/JSValue.mm;b8ee03916489f8b12143cd5c0bca546da5014fc9$901
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if ([json isKindOfClass:[@YES class]]) {
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return (bool) [json boolValue];
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} else {
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const auto value = [json longLongValue];
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if (isnan(value) || isinf(value)) {
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return nullptr;
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}
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return value;
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}
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case _C_UCHR:
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case _C_SHT:
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case _C_USHT:
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case _C_INT:
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case _C_UINT:
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case _C_LNG:
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case _C_ULNG:
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case _C_LNG_LNG:
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case _C_ULNG_LNG: {
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const auto value = [json longLongValue];
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if (isnan(value) || isinf(value)) {
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return nullptr;
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}
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return value;
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}
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case _C_FLT:
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case _C_DBL: {
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const auto value = [json doubleValue];
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if (isnan(value) || isinf(value)) {
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return nullptr;
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}
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return value;
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}
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// default:
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// fall through
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}
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} else if ([json isKindOfClass:[NSString class]]) {
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NSData *data = [json dataUsingEncoding:NSUTF8StringEncoding];
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return std::string(reinterpret_cast<const char*>(data.bytes),
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data.length);
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} else if ([json isKindOfClass:[NSArray class]]) {
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folly::dynamic array = folly::dynamic::array;
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for (id element in json) {
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array.push_back([self convertIdToFollyDynamic:element]);
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}
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return array;
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} else if ([json isKindOfClass:[NSDictionary class]]) {
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__block folly::dynamic object = folly::dynamic::object();
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[json enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSString *value, __unused BOOL *stop) {
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object.insert([self convertIdToFollyDynamic:key],
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[self convertIdToFollyDynamic:value]);
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}];
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return object;
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}
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return nil;
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}
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+ (id)convertFollyDynamicToId:(const folly::dynamic &)dyn {
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id convertFollyDynamicToId(const folly::dynamic &dyn) {
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// I could imagine an implementation which avoids copies by wrapping the
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// dynamic in a derived class of NSDictionary. We can do that if profiling
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// implies it will help.
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@@ -107,22 +27,84 @@ using namespace facebook::sonar;
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return @(dyn.getDouble());
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case folly::dynamic::STRING:
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return [[NSString alloc] initWithBytes:dyn.c_str() length:dyn.size()
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encoding:NSUTF8StringEncoding];
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encoding:NSUTF8StringEncoding];
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case folly::dynamic::ARRAY: {
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NSMutableArray *array = [[NSMutableArray alloc] initWithCapacity:dyn.size()];
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for (auto &elem : dyn) {
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[array addObject:[self convertFollyDynamicToId: elem]];
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[array addObject:convertFollyDynamicToId(elem)];
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}
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return array;
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}
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case folly::dynamic::OBJECT: {
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NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithCapacity:dyn.size()];
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for (auto &elem : dyn.items()) {
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dict[[self convertFollyDynamicToId:elem.first]] = [self convertFollyDynamicToId:elem.second];
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dict[convertFollyDynamicToId(elem.first)] = convertFollyDynamicToId(elem.second);
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}
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return dict;
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}
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}
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}
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@end
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folly::dynamic convertIdToFollyDynamic(id json)
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{
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if (json == nil || json == (id)kCFNull) {
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return nullptr;
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} else if ([json isKindOfClass:[NSNumber class]]) {
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const char *objCType = [json objCType];
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switch (objCType[0]) {
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// This is a c++ bool or C99 _Bool. On some platforms, BOOL is a bool.
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case _C_BOOL:
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return (bool) [json boolValue];
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case _C_CHR:
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// On some platforms, objc BOOL is a signed char, but it
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// might also be a small number. Use the same hack JSC uses
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// to distinguish them:
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// https://phabricator.intern.facebook.com/diffusion/FBS/browse/master/fbobjc/xplat/third-party/jsc/safari-600-1-4-17/JavaScriptCore/API/JSValue.mm;b8ee03916489f8b12143cd5c0bca546da5014fc9$901
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if ([json isKindOfClass:[@YES class]]) {
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return (bool) [json boolValue];
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} else {
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return [json longLongValue];
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}
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case _C_UCHR:
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case _C_SHT:
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case _C_USHT:
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case _C_INT:
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case _C_UINT:
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case _C_LNG:
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case _C_ULNG:
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case _C_LNG_LNG:
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case _C_ULNG_LNG:
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return [json longLongValue];
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case _C_FLT:
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case _C_DBL:
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return [json doubleValue];
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// default:
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// fall through
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}
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} else if ([json isKindOfClass:[NSString class]]) {
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NSData *data = [json dataUsingEncoding:NSUTF8StringEncoding];
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return std::string(reinterpret_cast<const char*>(data.bytes),
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data.length);
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} else if ([json isKindOfClass:[NSArray class]]) {
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folly::dynamic array = folly::dynamic::array;
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for (id element in json) {
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array.push_back(convertIdToFollyDynamic(element));
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}
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return array;
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} else if ([json isKindOfClass:[NSDictionary class]]) {
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__block folly::dynamic object = folly::dynamic::object();
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[json enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSString *value, __unused BOOL *stop) {
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object.insert(convertIdToFollyDynamic(key),
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convertIdToFollyDynamic(value));
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}];
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return object;
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}
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return nil;
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}
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} }
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@@ -1,52 +0,0 @@
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/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the LICENSE
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* file in the root directory of this source tree.
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*
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*/
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#pragma once
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#import <Foundation/Foundation.h>
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#import <folly/dynamic.h>
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namespace facebook { namespace sonar {
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#define _C_ID '@'
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#define _C_CLASS '#'
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#define _C_SEL ':'
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#define _C_CHR 'c'
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#define _C_UCHR 'C'
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#define _C_SHT 's'
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#define _C_USHT 'S'
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#define _C_INT 'i'
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#define _C_UINT 'I'
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#define _C_LNG 'l'
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#define _C_ULNG 'L'
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#define _C_LNG_LNG 'q'
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#define _C_ULNG_LNG 'Q'
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#define _C_FLT 'f'
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#define _C_DBL 'd'
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#define _C_BFLD 'b'
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#define _C_BOOL 'B'
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#define _C_VOID 'v'
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#define _C_UNDEF '?'
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#define _C_PTR '^'
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#define _C_CHARPTR '*'
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#define _C_ATOM '%'
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#define _C_ARY_B '['
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#define _C_ARY_E ']'
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#define _C_UNION_B '('
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#define _C_UNION_E ')'
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#define _C_STRUCT_B '{'
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#define _C_STRUCT_E '}'
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#define _C_VECTOR '!'
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#define _C_CONST 'r'
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}
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}
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@interface SKUtils: NSObject
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+ (folly::dynamic)convertIdToFollyDynamic:(id)json;
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+ (id)convertFollyDynamicToId:(const folly::dynamic &)dyn;
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@end
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