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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkottieJson.h"
#include "SkData.h"
#include "SkScalar.h"
#include "SkPath.h"
#include "SkPoint.h"
#include "SkStream.h"
#include "SkString.h"
#include "SkottieValue.h"
#include <vector>
namespace skottie {
using namespace skjson;
template <>
bool Parse<SkScalar>(const Value& v, SkScalar* s) {
// Some versions wrap values as single-element arrays.
if (const skjson::ArrayValue* array = v) {
if (array->size() > 0) {
return Parse((*array)[0], s);
}
}
if (const skjson::NumberValue* num = v) {
*s = static_cast<SkScalar>(**num);
return true;
}
return false;
}
template <>
bool Parse<bool>(const Value& v, bool* b) {
switch(v.getType()) {
case Value::Type::kNumber:
*b = SkToBool(*v.as<NumberValue>());
return true;
case Value::Type::kBool:
*b = *v.as<BoolValue>();
return true;
default:
break;
}
return false;
}
template <typename T>
bool ParseIntegral(const Value& v, T* result) {
if (const skjson::NumberValue* num = v) {
const auto dbl = **num;
*result = static_cast<T>(dbl);
return static_cast<double>(*result) == dbl;
}
return false;
}
template <>
bool Parse<int>(const Value& v, int* i) {
return ParseIntegral(v, i);
}
template <>
bool Parse<size_t>(const Value& v, size_t* sz) {
return ParseIntegral(v, sz);
}
template <>
bool Parse<SkString>(const Value& v, SkString* s) {
if (const skjson::StringValue* sv = v) {
s->set(sv->begin(), sv->size());
return true;
}
return false;
}
template <>
bool Parse<SkPoint>(const Value& v, SkPoint* pt) {
if (!v.is<ObjectValue>())
return false;
const auto& ov = v.as<ObjectValue>();
return Parse<SkScalar>(ov["x"], &pt->fX)
&& Parse<SkScalar>(ov["y"], &pt->fY);
}
template <>
bool Parse<std::vector<float>>(const Value& v, std::vector<float>* vec) {
if (!v.is<ArrayValue>())
return false;
const auto& av = v.as<ArrayValue>();
vec->resize(av.size());
for (size_t i = 0; i < av.size(); ++i) {
if (!Parse(av[i], vec->data() + i)) {
return false;
}
}
return true;
}
} // namespace skottie
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