1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // Copyright (c) 2015-2016 The Khronos Group Inc.
4 // Copyright (c) 2015-2016 Valve Corporation
5 // Copyright (c) 2015-2016 LunarG, Inc.
6 // Copyright (c) 2015-2016 Google, Inc.
7 //
8 // Licensed under the Apache License, Version 2.0 (the "License");
9 // you may not use this file except in compliance with the License.
10 // You may obtain a copy of the License at
11 //
12 //     http://www.apache.org/licenses/LICENSE-2.0
13 //
14 // Unless required by applicable law or agreed to in writing, software
15 // distributed under the License is distributed on an "AS IS" BASIS,
16 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 // See the License for the specific language governing permissions and
18 // limitations under the License.
19 ///////////////////////////////////////////////////////////////////////////////
20 
21 #include "vkjson.h"
22 
23 #include <assert.h>
24 #include <string.h>
25 
26 #include <cmath>
27 #include <cinttypes>
28 #include <cstdio>
29 #include <limits>
30 #include <memory>
31 #include <sstream>
32 #include <type_traits>
33 #include <utility>
34 
35 #include <cJSON.h>
36 #include <vulkan/vk_sdk_platform.h>
37 
38 namespace {
39 
IsIntegral(double value)40 inline bool IsIntegral(double value) {
41   return std::trunc(value) == value;
42 }
43 
44 template <typename T> struct EnumTraits;
45 template <> struct EnumTraits<VkPhysicalDeviceType> {
min__anon5c43e1f80111::EnumTraits46   static uint32_t min() { return VK_PHYSICAL_DEVICE_TYPE_BEGIN_RANGE; }
max__anon5c43e1f80111::EnumTraits47   static uint32_t max() { return VK_PHYSICAL_DEVICE_TYPE_END_RANGE; }
48 };
49 
50 template <> struct EnumTraits<VkFormat> {
min__anon5c43e1f80111::EnumTraits51   static uint32_t min() { return VK_FORMAT_BEGIN_RANGE; }
max__anon5c43e1f80111::EnumTraits52   static uint32_t max() { return VK_FORMAT_END_RANGE; }
53 };
54 
55 
56 // VkSparseImageFormatProperties
57 
58 template <typename Visitor>
Iterate(Visitor * visitor,VkExtent3D * extents)59 inline bool Iterate(Visitor* visitor, VkExtent3D* extents) {
60   return
61     visitor->Visit("width", &extents->width) &&
62     visitor->Visit("height", &extents->height) &&
63     visitor->Visit("depth", &extents->depth);
64 }
65 
66 template <typename Visitor>
Iterate(Visitor * visitor,VkImageFormatProperties * properties)67 inline bool Iterate(Visitor* visitor, VkImageFormatProperties* properties) {
68   return
69     visitor->Visit("maxExtent", &properties->maxExtent) &&
70     visitor->Visit("maxMipLevels", &properties->maxMipLevels) &&
71     visitor->Visit("maxArrayLayers", &properties->maxArrayLayers) &&
72     visitor->Visit("sampleCounts", &properties->sampleCounts) &&
73     visitor->Visit("maxResourceSize", &properties->maxResourceSize);
74 }
75 
76 template <typename Visitor>
Iterate(Visitor * visitor,VkPhysicalDeviceLimits * limits)77 inline bool Iterate(Visitor* visitor, VkPhysicalDeviceLimits* limits) {
78   return
79     visitor->Visit("maxImageDimension1D", &limits->maxImageDimension1D) &&
80     visitor->Visit("maxImageDimension2D", &limits->maxImageDimension2D) &&
81     visitor->Visit("maxImageDimension3D", &limits->maxImageDimension3D) &&
82     visitor->Visit("maxImageDimensionCube", &limits->maxImageDimensionCube) &&
83     visitor->Visit("maxImageArrayLayers", &limits->maxImageArrayLayers) &&
84     visitor->Visit("maxTexelBufferElements", &limits->maxTexelBufferElements) &&
85     visitor->Visit("maxUniformBufferRange", &limits->maxUniformBufferRange) &&
86     visitor->Visit("maxStorageBufferRange", &limits->maxStorageBufferRange) &&
87     visitor->Visit("maxPushConstantsSize", &limits->maxPushConstantsSize) &&
88     visitor->Visit("maxMemoryAllocationCount", &limits->maxMemoryAllocationCount) &&
89     visitor->Visit("maxSamplerAllocationCount", &limits->maxSamplerAllocationCount) &&
90     visitor->Visit("bufferImageGranularity", &limits->bufferImageGranularity) &&
91     visitor->Visit("sparseAddressSpaceSize", &limits->sparseAddressSpaceSize) &&
92     visitor->Visit("maxBoundDescriptorSets", &limits->maxBoundDescriptorSets) &&
93     visitor->Visit("maxPerStageDescriptorSamplers", &limits->maxPerStageDescriptorSamplers) &&
94     visitor->Visit("maxPerStageDescriptorUniformBuffers", &limits->maxPerStageDescriptorUniformBuffers) &&
95     visitor->Visit("maxPerStageDescriptorStorageBuffers", &limits->maxPerStageDescriptorStorageBuffers) &&
96     visitor->Visit("maxPerStageDescriptorSampledImages", &limits->maxPerStageDescriptorSampledImages) &&
97     visitor->Visit("maxPerStageDescriptorStorageImages", &limits->maxPerStageDescriptorStorageImages) &&
98     visitor->Visit("maxPerStageDescriptorInputAttachments", &limits->maxPerStageDescriptorInputAttachments) &&
99     visitor->Visit("maxPerStageResources", &limits->maxPerStageResources) &&
100     visitor->Visit("maxDescriptorSetSamplers", &limits->maxDescriptorSetSamplers) &&
101     visitor->Visit("maxDescriptorSetUniformBuffers", &limits->maxDescriptorSetUniformBuffers) &&
102     visitor->Visit("maxDescriptorSetUniformBuffersDynamic", &limits->maxDescriptorSetUniformBuffersDynamic) &&
103     visitor->Visit("maxDescriptorSetStorageBuffers", &limits->maxDescriptorSetStorageBuffers) &&
104     visitor->Visit("maxDescriptorSetStorageBuffersDynamic", &limits->maxDescriptorSetStorageBuffersDynamic) &&
105     visitor->Visit("maxDescriptorSetSampledImages", &limits->maxDescriptorSetSampledImages) &&
106     visitor->Visit("maxDescriptorSetStorageImages", &limits->maxDescriptorSetStorageImages) &&
107     visitor->Visit("maxDescriptorSetInputAttachments", &limits->maxDescriptorSetInputAttachments) &&
108     visitor->Visit("maxVertexInputAttributes", &limits->maxVertexInputAttributes) &&
109     visitor->Visit("maxVertexInputBindings", &limits->maxVertexInputBindings) &&
110     visitor->Visit("maxVertexInputAttributeOffset", &limits->maxVertexInputAttributeOffset) &&
111     visitor->Visit("maxVertexInputBindingStride", &limits->maxVertexInputBindingStride) &&
112     visitor->Visit("maxVertexOutputComponents", &limits->maxVertexOutputComponents) &&
113     visitor->Visit("maxTessellationGenerationLevel", &limits->maxTessellationGenerationLevel) &&
114     visitor->Visit("maxTessellationPatchSize", &limits->maxTessellationPatchSize) &&
115     visitor->Visit("maxTessellationControlPerVertexInputComponents", &limits->maxTessellationControlPerVertexInputComponents) &&
116     visitor->Visit("maxTessellationControlPerVertexOutputComponents", &limits->maxTessellationControlPerVertexOutputComponents) &&
117     visitor->Visit("maxTessellationControlPerPatchOutputComponents", &limits->maxTessellationControlPerPatchOutputComponents) &&
118     visitor->Visit("maxTessellationControlTotalOutputComponents", &limits->maxTessellationControlTotalOutputComponents) &&
119     visitor->Visit("maxTessellationEvaluationInputComponents", &limits->maxTessellationEvaluationInputComponents) &&
120     visitor->Visit("maxTessellationEvaluationOutputComponents", &limits->maxTessellationEvaluationOutputComponents) &&
121     visitor->Visit("maxGeometryShaderInvocations", &limits->maxGeometryShaderInvocations) &&
122     visitor->Visit("maxGeometryInputComponents", &limits->maxGeometryInputComponents) &&
123     visitor->Visit("maxGeometryOutputComponents", &limits->maxGeometryOutputComponents) &&
124     visitor->Visit("maxGeometryOutputVertices", &limits->maxGeometryOutputVertices) &&
125     visitor->Visit("maxGeometryTotalOutputComponents", &limits->maxGeometryTotalOutputComponents) &&
126     visitor->Visit("maxFragmentInputComponents", &limits->maxFragmentInputComponents) &&
127     visitor->Visit("maxFragmentOutputAttachments", &limits->maxFragmentOutputAttachments) &&
128     visitor->Visit("maxFragmentDualSrcAttachments", &limits->maxFragmentDualSrcAttachments) &&
129     visitor->Visit("maxFragmentCombinedOutputResources", &limits->maxFragmentCombinedOutputResources) &&
130     visitor->Visit("maxComputeSharedMemorySize", &limits->maxComputeSharedMemorySize) &&
131     visitor->Visit("maxComputeWorkGroupCount", &limits->maxComputeWorkGroupCount) &&
132     visitor->Visit("maxComputeWorkGroupInvocations", &limits->maxComputeWorkGroupInvocations) &&
133     visitor->Visit("maxComputeWorkGroupSize", &limits->maxComputeWorkGroupSize) &&
134     visitor->Visit("subPixelPrecisionBits", &limits->subPixelPrecisionBits) &&
135     visitor->Visit("subTexelPrecisionBits", &limits->subTexelPrecisionBits) &&
136     visitor->Visit("mipmapPrecisionBits", &limits->mipmapPrecisionBits) &&
137     visitor->Visit("maxDrawIndexedIndexValue", &limits->maxDrawIndexedIndexValue) &&
138     visitor->Visit("maxDrawIndirectCount", &limits->maxDrawIndirectCount) &&
139     visitor->Visit("maxSamplerLodBias", &limits->maxSamplerLodBias) &&
140     visitor->Visit("maxSamplerAnisotropy", &limits->maxSamplerAnisotropy) &&
141     visitor->Visit("maxViewports", &limits->maxViewports) &&
142     visitor->Visit("maxViewportDimensions", &limits->maxViewportDimensions) &&
143     visitor->Visit("viewportBoundsRange", &limits->viewportBoundsRange) &&
144     visitor->Visit("viewportSubPixelBits", &limits->viewportSubPixelBits) &&
145     visitor->Visit("minMemoryMapAlignment", &limits->minMemoryMapAlignment) &&
146     visitor->Visit("minTexelBufferOffsetAlignment", &limits->minTexelBufferOffsetAlignment) &&
147     visitor->Visit("minUniformBufferOffsetAlignment", &limits->minUniformBufferOffsetAlignment) &&
148     visitor->Visit("minStorageBufferOffsetAlignment", &limits->minStorageBufferOffsetAlignment) &&
149     visitor->Visit("minTexelOffset", &limits->minTexelOffset) &&
150     visitor->Visit("maxTexelOffset", &limits->maxTexelOffset) &&
151     visitor->Visit("minTexelGatherOffset", &limits->minTexelGatherOffset) &&
152     visitor->Visit("maxTexelGatherOffset", &limits->maxTexelGatherOffset) &&
153     visitor->Visit("minInterpolationOffset", &limits->minInterpolationOffset) &&
154     visitor->Visit("maxInterpolationOffset", &limits->maxInterpolationOffset) &&
155     visitor->Visit("subPixelInterpolationOffsetBits", &limits->subPixelInterpolationOffsetBits) &&
156     visitor->Visit("maxFramebufferWidth", &limits->maxFramebufferWidth) &&
157     visitor->Visit("maxFramebufferHeight", &limits->maxFramebufferHeight) &&
158     visitor->Visit("maxFramebufferLayers", &limits->maxFramebufferLayers) &&
159     visitor->Visit("framebufferColorSampleCounts", &limits->framebufferColorSampleCounts) &&
160     visitor->Visit("framebufferDepthSampleCounts", &limits->framebufferDepthSampleCounts) &&
161     visitor->Visit("framebufferStencilSampleCounts", &limits->framebufferStencilSampleCounts) &&
162     visitor->Visit("framebufferNoAttachmentsSampleCounts", &limits->framebufferNoAttachmentsSampleCounts) &&
163     visitor->Visit("maxColorAttachments", &limits->maxColorAttachments) &&
164     visitor->Visit("sampledImageColorSampleCounts", &limits->sampledImageColorSampleCounts) &&
165     visitor->Visit("sampledImageIntegerSampleCounts", &limits->sampledImageIntegerSampleCounts) &&
166     visitor->Visit("sampledImageDepthSampleCounts", &limits->sampledImageDepthSampleCounts) &&
167     visitor->Visit("sampledImageStencilSampleCounts", &limits->sampledImageStencilSampleCounts) &&
168     visitor->Visit("storageImageSampleCounts", &limits->storageImageSampleCounts) &&
169     visitor->Visit("maxSampleMaskWords", &limits->maxSampleMaskWords) &&
170     visitor->Visit("timestampComputeAndGraphics", &limits->timestampComputeAndGraphics) &&
171     visitor->Visit("timestampPeriod", &limits->timestampPeriod) &&
172     visitor->Visit("maxClipDistances", &limits->maxClipDistances) &&
173     visitor->Visit("maxCullDistances", &limits->maxCullDistances) &&
174     visitor->Visit("maxCombinedClipAndCullDistances", &limits->maxCombinedClipAndCullDistances) &&
175     visitor->Visit("discreteQueuePriorities", &limits->discreteQueuePriorities) &&
176     visitor->Visit("pointSizeRange", &limits->pointSizeRange) &&
177     visitor->Visit("lineWidthRange", &limits->lineWidthRange) &&
178     visitor->Visit("pointSizeGranularity", &limits->pointSizeGranularity) &&
179     visitor->Visit("lineWidthGranularity", &limits->lineWidthGranularity) &&
180     visitor->Visit("strictLines", &limits->strictLines) &&
181     visitor->Visit("standardSampleLocations", &limits->standardSampleLocations) &&
182     visitor->Visit("optimalBufferCopyOffsetAlignment", &limits->optimalBufferCopyOffsetAlignment) &&
183     visitor->Visit("optimalBufferCopyRowPitchAlignment", &limits->optimalBufferCopyRowPitchAlignment) &&
184     visitor->Visit("nonCoherentAtomSize", &limits->nonCoherentAtomSize);
185 }
186 
187 template <typename Visitor>
Iterate(Visitor * visitor,VkPhysicalDeviceSparseProperties * properties)188 inline bool Iterate(Visitor* visitor,
189                     VkPhysicalDeviceSparseProperties* properties) {
190   return
191     visitor->Visit("residencyStandard2DBlockShape", &properties->residencyStandard2DBlockShape) &&
192     visitor->Visit("residencyStandard2DMultisampleBlockShape", &properties->residencyStandard2DMultisampleBlockShape) &&
193     visitor->Visit("residencyStandard3DBlockShape", &properties->residencyStandard3DBlockShape) &&
194     visitor->Visit("residencyAlignedMipSize", &properties->residencyAlignedMipSize) &&
195     visitor->Visit("residencyNonResidentStrict", &properties->residencyNonResidentStrict);
196 }
197 
198 template <typename Visitor>
Iterate(Visitor * visitor,VkPhysicalDeviceProperties * properties)199 inline bool Iterate(Visitor* visitor,
200                     VkPhysicalDeviceProperties* properties) {
201   return
202     visitor->Visit("apiVersion", &properties->apiVersion) &&
203     visitor->Visit("driverVersion", &properties->driverVersion) &&
204     visitor->Visit("vendorID", &properties->vendorID) &&
205     visitor->Visit("deviceID", &properties->deviceID) &&
206     visitor->Visit("deviceType", &properties->deviceType) &&
207     visitor->Visit("deviceName", &properties->deviceName) &&
208     visitor->Visit("pipelineCacheUUID", &properties->pipelineCacheUUID) &&
209     visitor->Visit("limits", &properties->limits) &&
210     visitor->Visit("sparseProperties", &properties->sparseProperties);
211 }
212 
213 template <typename Visitor>
Iterate(Visitor * visitor,VkPhysicalDeviceFeatures * features)214 inline bool Iterate(Visitor* visitor, VkPhysicalDeviceFeatures* features) {
215   return
216     visitor->Visit("robustBufferAccess", &features->robustBufferAccess) &&
217     visitor->Visit("fullDrawIndexUint32", &features->fullDrawIndexUint32) &&
218     visitor->Visit("imageCubeArray", &features->imageCubeArray) &&
219     visitor->Visit("independentBlend", &features->independentBlend) &&
220     visitor->Visit("geometryShader", &features->geometryShader) &&
221     visitor->Visit("tessellationShader", &features->tessellationShader) &&
222     visitor->Visit("sampleRateShading", &features->sampleRateShading) &&
223     visitor->Visit("dualSrcBlend", &features->dualSrcBlend) &&
224     visitor->Visit("logicOp", &features->logicOp) &&
225     visitor->Visit("multiDrawIndirect", &features->multiDrawIndirect) &&
226     visitor->Visit("drawIndirectFirstInstance", &features->drawIndirectFirstInstance) &&
227     visitor->Visit("depthClamp", &features->depthClamp) &&
228     visitor->Visit("depthBiasClamp", &features->depthBiasClamp) &&
229     visitor->Visit("fillModeNonSolid", &features->fillModeNonSolid) &&
230     visitor->Visit("depthBounds", &features->depthBounds) &&
231     visitor->Visit("wideLines", &features->wideLines) &&
232     visitor->Visit("largePoints", &features->largePoints) &&
233     visitor->Visit("alphaToOne", &features->alphaToOne) &&
234     visitor->Visit("multiViewport", &features->multiViewport) &&
235     visitor->Visit("samplerAnisotropy", &features->samplerAnisotropy) &&
236     visitor->Visit("textureCompressionETC2", &features->textureCompressionETC2) &&
237     visitor->Visit("textureCompressionASTC_LDR", &features->textureCompressionASTC_LDR) &&
238     visitor->Visit("textureCompressionBC", &features->textureCompressionBC) &&
239     visitor->Visit("occlusionQueryPrecise", &features->occlusionQueryPrecise) &&
240     visitor->Visit("pipelineStatisticsQuery", &features->pipelineStatisticsQuery) &&
241     visitor->Visit("vertexPipelineStoresAndAtomics", &features->vertexPipelineStoresAndAtomics) &&
242     visitor->Visit("fragmentStoresAndAtomics", &features->fragmentStoresAndAtomics) &&
243     visitor->Visit("shaderTessellationAndGeometryPointSize", &features->shaderTessellationAndGeometryPointSize) &&
244     visitor->Visit("shaderImageGatherExtended", &features->shaderImageGatherExtended) &&
245     visitor->Visit("shaderStorageImageExtendedFormats", &features->shaderStorageImageExtendedFormats) &&
246     visitor->Visit("shaderStorageImageMultisample", &features->shaderStorageImageMultisample) &&
247     visitor->Visit("shaderStorageImageReadWithoutFormat", &features->shaderStorageImageReadWithoutFormat) &&
248     visitor->Visit("shaderStorageImageWriteWithoutFormat", &features->shaderStorageImageWriteWithoutFormat) &&
249     visitor->Visit("shaderUniformBufferArrayDynamicIndexing", &features->shaderUniformBufferArrayDynamicIndexing) &&
250     visitor->Visit("shaderSampledImageArrayDynamicIndexing", &features->shaderSampledImageArrayDynamicIndexing) &&
251     visitor->Visit("shaderStorageBufferArrayDynamicIndexing", &features->shaderStorageBufferArrayDynamicIndexing) &&
252     visitor->Visit("shaderStorageImageArrayDynamicIndexing", &features->shaderStorageImageArrayDynamicIndexing) &&
253     visitor->Visit("shaderClipDistance", &features->shaderClipDistance) &&
254     visitor->Visit("shaderCullDistance", &features->shaderCullDistance) &&
255     visitor->Visit("shaderFloat64", &features->shaderFloat64) &&
256     visitor->Visit("shaderInt64", &features->shaderInt64) &&
257     visitor->Visit("shaderInt16", &features->shaderInt16) &&
258     visitor->Visit("shaderResourceResidency", &features->shaderResourceResidency) &&
259     visitor->Visit("shaderResourceMinLod", &features->shaderResourceMinLod) &&
260     visitor->Visit("sparseBinding", &features->sparseBinding) &&
261     visitor->Visit("sparseResidencyBuffer", &features->sparseResidencyBuffer) &&
262     visitor->Visit("sparseResidencyImage2D", &features->sparseResidencyImage2D) &&
263     visitor->Visit("sparseResidencyImage3D", &features->sparseResidencyImage3D) &&
264     visitor->Visit("sparseResidency2Samples", &features->sparseResidency2Samples) &&
265     visitor->Visit("sparseResidency4Samples", &features->sparseResidency4Samples) &&
266     visitor->Visit("sparseResidency8Samples", &features->sparseResidency8Samples) &&
267     visitor->Visit("sparseResidency16Samples", &features->sparseResidency16Samples) &&
268     visitor->Visit("sparseResidencyAliased", &features->sparseResidencyAliased) &&
269     visitor->Visit("variableMultisampleRate", &features->variableMultisampleRate) &&
270     visitor->Visit("inheritedQueries", &features->inheritedQueries);
271 }
272 
273 template <typename Visitor>
Iterate(Visitor * visitor,VkMemoryType * type)274 inline bool Iterate(Visitor* visitor, VkMemoryType* type) {
275   return
276     visitor->Visit("propertyFlags", &type->propertyFlags) &&
277     visitor->Visit("heapIndex", &type->heapIndex);
278 }
279 
280 template <typename Visitor>
Iterate(Visitor * visitor,VkMemoryHeap * heap)281 inline bool Iterate(Visitor* visitor, VkMemoryHeap* heap) {
282   return
283     visitor->Visit("size", &heap->size) &&
284     visitor->Visit("flags", &heap->flags);
285 }
286 
287 template <typename Visitor>
Iterate(Visitor * visitor,VkPhysicalDeviceMemoryProperties * properties)288 inline bool Iterate(Visitor* visitor, VkPhysicalDeviceMemoryProperties* properties) {
289   return
290     visitor->Visit("memoryTypeCount", &properties->memoryTypeCount) &&
291     visitor->VisitArray("memoryTypes", properties->memoryTypeCount, &properties->memoryTypes) &&
292     visitor->Visit("memoryHeapCount", &properties->memoryHeapCount) &&
293     visitor->VisitArray("memoryHeaps", properties->memoryHeapCount, &properties->memoryHeaps);
294 }
295 
296 template <typename Visitor>
Iterate(Visitor * visitor,VkQueueFamilyProperties * properties)297 inline bool Iterate(Visitor* visitor, VkQueueFamilyProperties* properties) {
298   return
299     visitor->Visit("queueFlags", &properties->queueFlags) &&
300     visitor->Visit("queueCount", &properties->queueCount) &&
301     visitor->Visit("timestampValidBits", &properties->timestampValidBits) &&
302     visitor->Visit("minImageTransferGranularity", &properties->minImageTransferGranularity);
303 }
304 
305 template <typename Visitor>
Iterate(Visitor * visitor,VkExtensionProperties * properties)306 inline bool Iterate(Visitor* visitor, VkExtensionProperties* properties) {
307   return
308     visitor->Visit("extensionName", &properties->extensionName) &&
309     visitor->Visit("specVersion", &properties->specVersion);
310 }
311 
312 template <typename Visitor>
Iterate(Visitor * visitor,VkLayerProperties * properties)313 inline bool Iterate(Visitor* visitor, VkLayerProperties* properties) {
314   return
315     visitor->Visit("layerName", &properties->layerName) &&
316     visitor->Visit("specVersion", &properties->specVersion) &&
317     visitor->Visit("implementationVersion", &properties->implementationVersion) &&
318     visitor->Visit("description", &properties->description);
319 }
320 
321 template <typename Visitor>
Iterate(Visitor * visitor,VkFormatProperties * properties)322 inline bool Iterate(Visitor* visitor, VkFormatProperties* properties) {
323   return
324     visitor->Visit("linearTilingFeatures", &properties->linearTilingFeatures) &&
325     visitor->Visit("optimalTilingFeatures", &properties->optimalTilingFeatures) &&
326     visitor->Visit("bufferFeatures", &properties->bufferFeatures);
327 }
328 
329 template <typename Visitor>
Iterate(Visitor * visitor,VkJsonLayer * layer)330 inline bool Iterate(Visitor* visitor, VkJsonLayer* layer) {
331   return visitor->Visit("properties", &layer->properties) &&
332          visitor->Visit("extensions", &layer->extensions);
333 }
334 
335 template <typename Visitor>
Iterate(Visitor * visitor,VkJsonDevice * device)336 inline bool Iterate(Visitor* visitor, VkJsonDevice* device) {
337   return visitor->Visit("properties", &device->properties) &&
338          visitor->Visit("features", &device->features) &&
339          visitor->Visit("memory", &device->memory) &&
340          visitor->Visit("queues", &device->queues) &&
341          visitor->Visit("extensions", &device->extensions) &&
342          visitor->Visit("layers", &device->layers) &&
343          visitor->Visit("formats", &device->formats);
344 }
345 
346 template <typename Visitor>
Iterate(Visitor * visitor,VkJsonInstance * instance)347 inline bool Iterate(Visitor* visitor, VkJsonInstance* instance) {
348   return visitor->Visit("layers", &instance->layers) &&
349          visitor->Visit("extensions", &instance->extensions) &&
350          visitor->Visit("devices", &instance->devices);
351 }
352 
353 template <typename T>
354 using EnableForArithmetic =
355     typename std::enable_if<std::is_arithmetic<T>::value, void>::type;
356 
357 template <typename T>
358 using EnableForStruct =
359     typename std::enable_if<std::is_class<T>::value, void>::type;
360 
361 template <typename T>
362 using EnableForEnum =
363     typename std::enable_if<std::is_enum<T>::value, void>::type;
364 
365 template <typename T, typename = EnableForStruct<T>, typename = void>
366 cJSON* ToJsonValue(const T& value);
367 
368 template <typename T, typename = EnableForArithmetic<T>>
ToJsonValue(const T & value)369 inline cJSON* ToJsonValue(const T& value) {
370   return cJSON_CreateNumber(static_cast<double>(value));
371 }
372 
ToJsonValue(const uint64_t & value)373 inline cJSON* ToJsonValue(const uint64_t& value) {
374   char string[19] = {0};  // "0x" + 16 digits + terminal \0
375   snprintf(string, sizeof(string), "0x%016" PRIx64, value);
376   return cJSON_CreateString(string);
377 }
378 
379 template <typename T, typename = EnableForEnum<T>, typename = void,
380           typename = void>
ToJsonValue(const T & value)381 inline cJSON* ToJsonValue(const T& value) {
382   return cJSON_CreateNumber(static_cast<double>(value));
383 }
384 
385 template <typename T>
ArrayToJsonValue(uint32_t count,const T * values)386 inline cJSON* ArrayToJsonValue(uint32_t count, const T* values) {
387   cJSON* array = cJSON_CreateArray();
388   for (unsigned int i = 0; i < count; ++i)
389     cJSON_AddItemToArray(array, ToJsonValue(values[i]));
390   return array;
391 }
392 
393 template <typename T, unsigned int N>
ToJsonValue(const T (& value)[N])394 inline cJSON* ToJsonValue(const T (&value)[N]) {
395   return ArrayToJsonValue(N, value);
396 }
397 
398 template <size_t N>
ToJsonValue(const char (& value)[N])399 inline cJSON* ToJsonValue(const char (&value)[N]) {
400   assert(strlen(value) < N);
401   return cJSON_CreateString(value);
402 }
403 
404 template <typename T>
ToJsonValue(const std::vector<T> & value)405 inline cJSON* ToJsonValue(const std::vector<T>& value) {
406   assert(value.size() <= std::numeric_limits<uint32_t>::max());
407   return ArrayToJsonValue(static_cast<uint32_t>(value.size()), value.data());
408 }
409 
410 template <typename F, typename S>
ToJsonValue(const std::pair<F,S> & value)411 inline cJSON* ToJsonValue(const std::pair<F, S>& value) {
412   cJSON* array = cJSON_CreateArray();
413   cJSON_AddItemToArray(array, ToJsonValue(value.first));
414   cJSON_AddItemToArray(array, ToJsonValue(value.second));
415   return array;
416 }
417 
418 template <typename F, typename S>
ToJsonValue(const std::map<F,S> & value)419 inline cJSON* ToJsonValue(const std::map<F, S>& value) {
420   cJSON* array = cJSON_CreateArray();
421   for (auto& kv : value)
422     cJSON_AddItemToArray(array, ToJsonValue(kv));
423   return array;
424 }
425 
426 class JsonWriterVisitor {
427  public:
JsonWriterVisitor()428   JsonWriterVisitor() : object_(cJSON_CreateObject()) {}
429 
~JsonWriterVisitor()430   ~JsonWriterVisitor() {
431     if (object_)
432       cJSON_Delete(object_);
433   }
434 
Visit(const char * key,const T * value)435   template <typename T> bool Visit(const char* key, const T* value) {
436     cJSON_AddItemToObjectCS(object_, key, ToJsonValue(*value));
437     return true;
438   }
439 
440   template <typename T, uint32_t N>
VisitArray(const char * key,uint32_t count,const T (* value)[N])441   bool VisitArray(const char* key, uint32_t count, const T (*value)[N]) {
442     assert(count <= N);
443     cJSON_AddItemToObjectCS(object_, key, ArrayToJsonValue(count, *value));
444     return true;
445   }
446 
get_object() const447   cJSON* get_object() const { return object_; }
take_object()448   cJSON* take_object() {
449     cJSON* object = object_;
450     object_ = nullptr;
451     return object;
452   }
453 
454  private:
455   cJSON* object_;
456 };
457 
458 template <typename Visitor, typename T>
VisitForWrite(Visitor * visitor,const T & t)459 inline void VisitForWrite(Visitor* visitor, const T& t) {
460   Iterate(visitor, const_cast<T*>(&t));
461 }
462 
463 template <typename T, typename /*= EnableForStruct<T>*/, typename /*= void*/>
ToJsonValue(const T & value)464 cJSON* ToJsonValue(const T& value) {
465   JsonWriterVisitor visitor;
466   VisitForWrite(&visitor, value);
467   return visitor.take_object();
468 }
469 
470 template <typename T, typename = EnableForStruct<T>>
471 bool AsValue(cJSON* json_value, T* t);
472 
AsValue(cJSON * json_value,int32_t * value)473 inline bool AsValue(cJSON* json_value, int32_t* value) {
474   double d = json_value->valuedouble;
475   if (json_value->type != cJSON_Number || !IsIntegral(d) ||
476       d < static_cast<double>(std::numeric_limits<int32_t>::min()) ||
477       d > static_cast<double>(std::numeric_limits<int32_t>::max()))
478     return false;
479   *value = static_cast<int32_t>(d);
480   return true;
481 }
482 
AsValue(cJSON * json_value,uint64_t * value)483 inline bool AsValue(cJSON* json_value, uint64_t* value) {
484   if (json_value->type != cJSON_String)
485     return false;
486   int result = std::sscanf(json_value->valuestring, "0x%016" PRIx64, value);
487   return result == 1;
488 }
489 
AsValue(cJSON * json_value,uint32_t * value)490 inline bool AsValue(cJSON* json_value, uint32_t* value) {
491   double d = json_value->valuedouble;
492   if (json_value->type != cJSON_Number || !IsIntegral(d) ||
493       d < 0.0 || d > static_cast<double>(std::numeric_limits<uint32_t>::max()))
494     return false;
495   *value = static_cast<uint32_t>(d);
496   return true;
497 }
498 
AsValue(cJSON * json_value,uint8_t * value)499 inline bool AsValue(cJSON* json_value, uint8_t* value) {
500   uint32_t value32 = 0;
501   AsValue(json_value, &value32);
502   if (value32 > std::numeric_limits<uint8_t>::max())
503     return false;
504   *value = static_cast<uint8_t>(value32);
505   return true;
506 }
507 
AsValue(cJSON * json_value,float * value)508 inline bool AsValue(cJSON* json_value, float* value) {
509   if (json_value->type != cJSON_Number)
510     return false;
511   *value = static_cast<float>(json_value->valuedouble);
512   return true;
513 }
514 
515 template <typename T>
AsArray(cJSON * json_value,uint32_t count,T * values)516 inline bool AsArray(cJSON* json_value, uint32_t count, T* values) {
517   if (json_value->type != cJSON_Array ||
518       cJSON_GetArraySize(json_value) != count)
519     return false;
520   for (uint32_t i = 0; i < count; ++i) {
521     if (!AsValue(cJSON_GetArrayItem(json_value, i), values + i))
522       return false;
523   }
524   return true;
525 }
526 
527 template <typename T, unsigned int N>
AsValue(cJSON * json_value,T (* value)[N])528 inline bool AsValue(cJSON* json_value, T (*value)[N]) {
529   return AsArray(json_value, N, *value);
530 }
531 
532 template <size_t N>
AsValue(cJSON * json_value,char (* value)[N])533 inline bool AsValue(cJSON* json_value, char (*value)[N]) {
534   if (json_value->type != cJSON_String)
535     return false;
536   size_t len = strlen(json_value->valuestring);
537   if (len >= N)
538     return false;
539   memcpy(*value, json_value->valuestring, len);
540   memset(*value + len, 0, N-len);
541   return true;
542 }
543 
544 template <typename T, typename = EnableForEnum<T>, typename = void>
AsValue(cJSON * json_value,T * t)545 inline bool AsValue(cJSON* json_value, T* t) {
546   // TODO(piman): to/from strings instead?
547   uint32_t value = 0;
548   if (!AsValue(json_value, &value))
549       return false;
550   if (value < EnumTraits<T>::min() || value > EnumTraits<T>::max())
551     return false;
552   *t = static_cast<T>(value);
553   return true;
554 }
555 
556 template <typename T>
AsValue(cJSON * json_value,std::vector<T> * value)557 inline bool AsValue(cJSON* json_value, std::vector<T>* value) {
558   if (json_value->type != cJSON_Array)
559     return false;
560   int size = cJSON_GetArraySize(json_value);
561   value->resize(size);
562   return AsArray(json_value, size, value->data());
563 }
564 
565 template <typename F, typename S>
AsValue(cJSON * json_value,std::pair<F,S> * value)566 inline bool AsValue(cJSON* json_value, std::pair<F, S>* value) {
567   if (json_value->type != cJSON_Array || cJSON_GetArraySize(json_value) != 2)
568     return false;
569   return AsValue(cJSON_GetArrayItem(json_value, 0), &value->first) &&
570          AsValue(cJSON_GetArrayItem(json_value, 1), &value->second);
571 }
572 
573 template <typename F, typename S>
AsValue(cJSON * json_value,std::map<F,S> * value)574 inline bool AsValue(cJSON* json_value, std::map<F, S>* value) {
575   if (json_value->type != cJSON_Array)
576     return false;
577   int size = cJSON_GetArraySize(json_value);
578   for (int i = 0; i < size; ++i) {
579     std::pair<F, S> elem;
580     if (!AsValue(cJSON_GetArrayItem(json_value, i), &elem))
581       return false;
582     if (!value->insert(elem).second)
583       return false;
584   }
585   return true;
586 }
587 
588 template <typename T>
ReadValue(cJSON * object,const char * key,T * value,std::string * errors)589 bool ReadValue(cJSON* object, const char* key, T* value,
590                std::string* errors) {
591   cJSON* json_value = cJSON_GetObjectItem(object, key);
592   if (!json_value) {
593     if (errors)
594       *errors = std::string(key) + " missing.";
595     return false;
596   }
597   if (AsValue(json_value, value))
598     return true;
599   if (errors)
600     *errors = std::string("Wrong type for ") + std::string(key) + ".";
601   return false;
602 }
603 
604 template <typename Visitor, typename T>
VisitForRead(Visitor * visitor,T * t)605 inline bool VisitForRead(Visitor* visitor, T* t) {
606   return Iterate(visitor, t);
607 }
608 
609 class JsonReaderVisitor {
610  public:
JsonReaderVisitor(cJSON * object,std::string * errors)611   JsonReaderVisitor(cJSON* object, std::string* errors)
612       : object_(object), errors_(errors) {}
613 
Visit(const char * key,T * value) const614   template <typename T> bool Visit(const char* key, T* value) const {
615     return ReadValue(object_, key, value, errors_);
616   }
617 
618   template <typename T, uint32_t N>
VisitArray(const char * key,uint32_t count,T (* value)[N])619   bool VisitArray(const char* key, uint32_t count, T (*value)[N]) {
620     if (count > N)
621       return false;
622     cJSON* json_value = cJSON_GetObjectItem(object_, key);
623     if (!json_value) {
624       if (errors_)
625         *errors_ = std::string(key) + " missing.";
626       return false;
627     }
628     if (AsArray(json_value, count, *value))
629       return true;
630     if (errors_)
631       *errors_ = std::string("Wrong type for ") + std::string(key) + ".";
632     return false;
633   }
634 
635 
636  private:
637   cJSON* object_;
638   std::string* errors_;
639 };
640 
641 template <typename T, typename /*= EnableForStruct<T>*/>
AsValue(cJSON * json_value,T * t)642 bool AsValue(cJSON* json_value, T* t) {
643   if (json_value->type != cJSON_Object)
644     return false;
645   JsonReaderVisitor visitor(json_value, nullptr);
646   return VisitForRead(&visitor, t);
647 }
648 
649 
VkTypeToJson(const T & t)650 template <typename T> std::string VkTypeToJson(const T& t) {
651   JsonWriterVisitor visitor;
652   VisitForWrite(&visitor, t);
653 
654   char* output = cJSON_Print(visitor.get_object());
655   std::string result(output);
656   free(output);
657   return result;
658 }
659 
VkTypeFromJson(const std::string & json,T * t,std::string * errors)660 template <typename T> bool VkTypeFromJson(const std::string& json,
661                                           T* t,
662                                           std::string* errors) {
663   *t = T();
664   cJSON* object = cJSON_Parse(json.c_str());
665   if (!object) {
666     if (errors)
667       errors->assign(cJSON_GetErrorPtr());
668     return false;
669   }
670   bool result = AsValue(object, t);
671   cJSON_Delete(object);
672   return result;
673 }
674 
675 }  // anonymous namespace
676 
VkJsonInstanceToJson(const VkJsonInstance & instance)677 std::string VkJsonInstanceToJson(const VkJsonInstance& instance) {
678   return VkTypeToJson(instance);
679 }
680 
VkJsonInstanceFromJson(const std::string & json,VkJsonInstance * instance,std::string * errors)681 bool VkJsonInstanceFromJson(const std::string& json,
682                             VkJsonInstance* instance,
683                             std::string* errors) {
684   return VkTypeFromJson(json, instance, errors);
685 }
686 
VkJsonDeviceToJson(const VkJsonDevice & device)687 std::string VkJsonDeviceToJson(const VkJsonDevice& device) {
688   return VkTypeToJson(device);
689 }
690 
VkJsonDeviceFromJson(const std::string & json,VkJsonDevice * device,std::string * errors)691 bool VkJsonDeviceFromJson(const std::string& json,
692                           VkJsonDevice* device,
693                           std::string* errors) {
694   return VkTypeFromJson(json, device, errors);
695 };
696 
VkJsonImageFormatPropertiesToJson(const VkImageFormatProperties & properties)697 std::string VkJsonImageFormatPropertiesToJson(
698     const VkImageFormatProperties& properties) {
699   return VkTypeToJson(properties);
700 }
701 
VkJsonImageFormatPropertiesFromJson(const std::string & json,VkImageFormatProperties * properties,std::string * errors)702 bool VkJsonImageFormatPropertiesFromJson(const std::string& json,
703                                          VkImageFormatProperties* properties,
704                                          std::string* errors) {
705   return VkTypeFromJson(json, properties, errors);
706 };
707