253 lines
9.5 KiB
C++
253 lines
9.5 KiB
C++
#include <mbgl/style/expression/assertion.hpp>
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#include <mbgl/style/expression/coercion.hpp>
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#include <mbgl/style/expression/comparison.hpp>
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#include <mbgl/style/expression/compound_expression.hpp>
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#include <mbgl/style/expression/dsl.hpp>
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#include <mbgl/style/expression/dsl_impl.hpp>
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#include <mbgl/style/expression/error.hpp>
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#include <mbgl/style/expression/format_expression.hpp>
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#include <mbgl/style/expression/image_expression.hpp>
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#include <mbgl/style/expression/interpolate.hpp>
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#include <mbgl/style/expression/literal.hpp>
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#include <mbgl/style/expression/step.hpp>
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#include <rapidjson/document.h>
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#include <mapbox/geojsonvt.hpp>
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#include <mbgl/style/conversion/json.hpp>
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#include <utility>
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namespace mbgl {
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namespace style {
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namespace expression {
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namespace dsl {
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std::unique_ptr<Expression> compound(const char* op, std::vector<std::unique_ptr<Expression>> args) {
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ParsingContext ctx;
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ParseResult result = createCompoundExpression(op, std::move(args), ctx);
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assert(result);
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return std::move(*result);
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}
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std::unique_ptr<Expression> createExpression(const char* expr) {
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using JSValue = rapidjson::GenericValue<rapidjson::UTF8<>, rapidjson::CrtAllocator>;
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rapidjson::GenericDocument<rapidjson::UTF8<>, rapidjson::CrtAllocator> document;
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document.Parse<0>(expr);
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if (document.HasParseError()) return nullptr;
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const JSValue* expression = &document;
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expression::ParsingContext ctx;
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expression::ParseResult parsed = ctx.parseExpression(mbgl::style::conversion::Convertible(expression));
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return parsed ? std::move(*parsed) : nullptr;
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}
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std::unique_ptr<Expression> createExpression(const mbgl::style::conversion::Convertible& expr) {
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expression::ParsingContext ctx;
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expression::ParseResult parsed = ctx.parseExpression(expr);
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return parsed ? std::move(*parsed) : nullptr;
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}
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std::unique_ptr<Expression> error(std::string message) {
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return std::make_unique<Error>(std::move(message));
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}
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std::unique_ptr<Expression> literal(const char* value) {
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return literal(std::string(value));
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}
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std::unique_ptr<Expression> literal(const Value& value) {
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return std::make_unique<Literal>(value);
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}
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std::unique_ptr<Expression> literal(std::initializer_list<double> value) {
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std::vector<Value> values;
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for (auto i : value) {
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values.emplace_back(i);
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}
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return literal(values);
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}
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std::unique_ptr<Expression> literal(std::initializer_list<const char*> value) {
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std::vector<Value> values;
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for (auto i : value) {
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values.emplace_back(std::string(i));
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}
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return literal(values);
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}
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std::unique_ptr<Expression> assertion(const type::Type& type,
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std::unique_ptr<Expression> value,
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std::unique_ptr<Expression> def) {
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std::vector<std::unique_ptr<Expression>> v = vec(std::move(value));
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if (def) {
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v.push_back(std::move(def));
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}
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return std::make_unique<Assertion>(type, std::move(v));
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}
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std::unique_ptr<Expression> number(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return assertion(type::Number, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> string(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return assertion(type::String, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> boolean(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return assertion(type::Boolean, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> coercion(const type::Type& type,
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std::unique_ptr<Expression> value,
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std::unique_ptr<Expression> def) {
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std::vector<std::unique_ptr<Expression>> v = vec(std::move(value));
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if (def) {
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v.push_back(std::move(def));
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}
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return std::make_unique<Coercion>(type, std::move(v));
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}
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std::unique_ptr<Expression> toColor(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return coercion(type::Color, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> toString(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return coercion(type::String, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> toFormatted(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return coercion(type::Formatted, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> toImage(std::unique_ptr<Expression> value, std::unique_ptr<Expression> def) {
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return coercion(type::Image, std::move(value), std::move(def));
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}
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std::unique_ptr<Expression> get(const char* value) {
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return get(literal(value));
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}
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std::unique_ptr<Expression> get(std::unique_ptr<Expression> property) {
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return compound("get", std::move(property));
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}
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std::unique_ptr<Expression> id() {
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return compound("id");
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}
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std::unique_ptr<Expression> zoom() {
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return compound("zoom");
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}
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std::unique_ptr<Expression> eq(std::unique_ptr<Expression> lhs, std::unique_ptr<Expression> rhs) {
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return std::make_unique<BasicComparison>("==", std::move(lhs), std::move(rhs));
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}
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std::unique_ptr<Expression> ne(std::unique_ptr<Expression> lhs, std::unique_ptr<Expression> rhs) {
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return std::make_unique<BasicComparison>("!=", std::move(lhs), std::move(rhs));
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}
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std::unique_ptr<Expression> gt(std::unique_ptr<Expression> lhs, std::unique_ptr<Expression> rhs) {
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return std::make_unique<BasicComparison>(">", std::move(lhs), std::move(rhs));
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}
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std::unique_ptr<Expression> lt(std::unique_ptr<Expression> lhs, std::unique_ptr<Expression> rhs) {
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return std::make_unique<BasicComparison>("<", std::move(lhs), std::move(rhs));
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}
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std::unique_ptr<Expression> step(std::unique_ptr<Expression> input,
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std::unique_ptr<Expression> output0,
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double input1,
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std::unique_ptr<Expression> output1) {
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type::Type type = output0->getType();
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std::map<double, std::unique_ptr<Expression>> stops;
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stops[-std::numeric_limits<double>::infinity()] = std::move(output0);
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stops[input1] = std::move(output1);
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return std::make_unique<Step>(type, std::move(input), std::move(stops));
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}
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Interpolator linear() {
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return ExponentialInterpolator(1.0);
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}
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Interpolator exponential(double base) {
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return ExponentialInterpolator(base);
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}
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Interpolator cubicBezier(double x1, double y1, double x2, double y2) {
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return CubicBezierInterpolator(x1, y1, x2, y2);
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}
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std::unique_ptr<Expression> interpolate(Interpolator interpolator,
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std::unique_ptr<Expression> input,
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double input1,
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std::unique_ptr<Expression> output1) {
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type::Type type = output1->getType();
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std::map<double, std::unique_ptr<Expression>> stops;
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stops[input1] = std::move(output1);
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ParsingContext ctx;
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ParseResult result = createInterpolate(type, std::move(interpolator), std::move(input), std::move(stops), ctx);
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assert(result);
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return std::move(*result);
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}
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std::unique_ptr<Expression> interpolate(Interpolator interpolator,
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std::unique_ptr<Expression> input,
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double input1,
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std::unique_ptr<Expression> output1,
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double input2,
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std::unique_ptr<Expression> output2) {
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type::Type type = output1->getType();
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std::map<double, std::unique_ptr<Expression>> stops;
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stops[input1] = std::move(output1);
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stops[input2] = std::move(output2);
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ParsingContext ctx;
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ParseResult result = createInterpolate(type, std::move(interpolator), std::move(input), std::move(stops), ctx);
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assert(result);
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return std::move(*result);
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}
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std::unique_ptr<Expression> interpolate(Interpolator interpolator,
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std::unique_ptr<Expression> input,
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double input1,
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std::unique_ptr<Expression> output1,
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double input2,
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std::unique_ptr<Expression> output2,
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double input3,
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std::unique_ptr<Expression> output3) {
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type::Type type = output1->getType();
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std::map<double, std::unique_ptr<Expression>> stops;
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stops[input1] = std::move(output1);
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stops[input2] = std::move(output2);
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stops[input3] = std::move(output3);
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ParsingContext ctx;
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ParseResult result = createInterpolate(type, std::move(interpolator), std::move(input), std::move(stops), ctx);
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assert(result);
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return std::move(*result);
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}
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std::unique_ptr<Expression> concat(std::vector<std::unique_ptr<Expression>> inputs) {
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return compound("concat", std::move(inputs));
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}
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std::unique_ptr<Expression> format(const char* value) {
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return std::make_unique<Literal>(Formatted(value));
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}
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std::unique_ptr<Expression> format(std::unique_ptr<Expression> input) {
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std::vector<FormatExpressionSection> sections{FormatExpressionSection(std::move(input))};
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return std::make_unique<FormatExpression>(std::move(sections));
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}
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std::unique_ptr<Expression> image(const char* value) {
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return std::make_unique<Literal>(Image(value));
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}
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std::unique_ptr<Expression> image(std::unique_ptr<Expression> expression) {
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return std::make_unique<ImageExpression>(std::move(expression));
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}
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} // namespace dsl
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} // namespace expression
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} // namespace style
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} // namespace mbgl
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