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#include <mbgl/style/expression/formatted.hpp>
#include <mbgl/style/conversion_impl.hpp>
#include <mbgl/style/conversion/constant.hpp>
namespace mbgl {
namespace style {
namespace expression {
const char* const kFormattedSectionFontScale = "font-scale";
const char* const kFormattedSectionTextFont = "text-font";
const char* const kFormattedSectionTextColor = "text-color";
bool Formatted::operator==(const Formatted& other) const {
if (other.sections.size() != sections.size()) {
return false;
}
for (std::size_t i = 0; i < sections.size(); i++) {
const auto& thisSection = sections.at(i);
const auto& otherSection = other.sections.at(i);
if (thisSection.text != otherSection.text || thisSection.image != otherSection.image ||
thisSection.fontScale != otherSection.fontScale || thisSection.fontStack != otherSection.fontStack ||
thisSection.textColor != otherSection.textColor) {
return false;
}
}
return true;
}
std::string Formatted::toString() const {
std::string result;
for (const auto& section : sections) {
result += section.text;
}
return result;
}
bool Formatted::empty() const {
if (sections.empty()) {
return true;
}
return !std::any_of(sections.begin(), sections.end(), [](const FormattedSection& section) {
return !section.text.empty() || (section.image && !section.image->empty());
});
}
mbgl::Value Formatted::toObject() const {
mapbox::base::ValueObject result;
mapbox::base::ValueArray sectionValues;
sectionValues.reserve(sections.size());
for (const auto& section : sections) {
mapbox::base::ValueObject serializedSection;
serializedSection.emplace("text", section.text);
if (section.fontScale) {
serializedSection.emplace("scale", *section.fontScale);
} else {
serializedSection.emplace("scale", NullValue());
}
if (section.fontStack) {
std::string fontStackString;
serializedSection.emplace("fontStack", fontStackToString(*section.fontStack));
} else {
serializedSection.emplace("fontStack", NullValue());
}
if (section.textColor) {
serializedSection.emplace("textColor", section.textColor->toObject());
} else {
serializedSection.emplace("textColor", NullValue());
}
serializedSection.emplace("image", section.image ? section.image->toValue() : NullValue());
sectionValues.emplace_back(serializedSection);
}
result.emplace("sections", std::move(sectionValues));
return result;
}
} // namespace expression
namespace conversion {
using namespace mbgl::style::expression;
optional<Formatted> Converter<Formatted>::operator()(const Convertible& value, Error& error) const {
using namespace mbgl::style::expression;
if (isArray(value)) {
std::vector<FormattedSection> sections;
for (std::size_t i = 0; i < arrayLength(value); ++i) {
const Convertible& section = arrayMember(value, i);
std::size_t sectionLength = arrayLength(section);
if (sectionLength < 1) {
error.message = "Section has to contain a text and optional parameters or an image.";
return nullopt;
}
const Convertible& firstElement = arrayMember(section, 0);
if (isArray(firstElement)) {
if (arrayLength(firstElement) < 2) {
error.message = "Image section has to contain image name.";
return nullopt;
}
optional<std::string> imageOp = toString(arrayMember(firstElement, 0));
if (!imageOp || *imageOp != "image") {
error.message = "Serialized image section has to contain 'image' operator.";
return nullopt;
}
optional<std::string> imageArg = toString(arrayMember(firstElement, 1));
if (!imageArg) {
error.message = "Serialized image section agument has to be of a String type.";
return nullopt;
}
sections.emplace_back(Image(*imageArg));
continue;
}
optional<std::string> sectionText = toString(firstElement);
if (!sectionText) {
error.message = "Section has to contain a text.";
return nullopt;
}
optional<double> fontScale;
optional<FontStack> textFont;
optional<Color> textColor;
if (sectionLength > 1) {
const Convertible& sectionParams = arrayMember(section, 1);
if (!isObject(sectionParams)) {
error.message = "Parameters have to be enclosed in an object.";
return nullopt;
}
optional<Convertible> fontScaleMember = objectMember(sectionParams, kFormattedSectionFontScale);
if (fontScaleMember) {
fontScale = toDouble(*fontScaleMember);
}
optional<Convertible> textFontMember = objectMember(sectionParams, kFormattedSectionTextFont);
if (textFontMember) {
if (isArray(*textFontMember)) {
std::vector<std::string> fontsVector;
for (std::size_t j = 0; j < arrayLength(*textFontMember); ++j) {
auto font = toString(arrayMember(*textFontMember, j));
if (font) {
fontsVector.push_back(*font);
} else {
error.message = "Font has to be a string.";
return nullopt;
}
}
textFont = fontsVector;
} else {
error.message = "Font stack has to be an array.";
return nullopt;
}
}
optional<Convertible> textColorMember = objectMember(sectionParams, kFormattedSectionTextColor);
if (textColorMember) {
textColor = convert<Color>(*textColorMember, error);
if (!textColor) {
return nullopt;
}
}
}
sections.emplace_back(*sectionText, fontScale, textFont, textColor);
}
return Formatted(sections);
} else if (optional<std::string> result = toString(value)) {
return Formatted(result->c_str());
} else {
error.message = "Formatted must be plain string or array type.";
return nullopt;
}
}
} // namespace conversion
} // namespace style
} // namespace mbgl
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