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#include <mbgl/style/expression/dsl.hpp>
#include <mbgl/style/expression/literal.hpp>
#include <mbgl/style/expression/assertion.hpp>
#include <mbgl/style/expression/coercion.hpp>
#include <mbgl/style/expression/equals.hpp>
#include <mbgl/style/expression/step.hpp>
#include <mbgl/style/expression/interpolate.hpp>
#include <mbgl/style/expression/compound_expression.hpp>
#include <mbgl/util/ignore.hpp>
namespace mbgl {
namespace style {
namespace expression {
namespace dsl {
template <class... Args>
static std::vector<std::unique_ptr<Expression>> vec(Args... args) {
std::vector<std::unique_ptr<Expression>> result;
util::ignore({ (result.push_back(std::move(args)), 0)... });
return result;
}
template <class... Args>
static std::unique_ptr<Expression> compound(const char* op, Args... args) {
ParsingContext ctx;
ParseResult result = createCompoundExpression(op, vec(std::move(args)...), ctx);
assert(result);
return std::move(*result);
}
std::unique_ptr<Expression> literal(const char* value) {
return literal(std::string(value));
}
std::unique_ptr<Expression> literal(Value value) {
return std::make_unique<Literal>(value);
}
std::unique_ptr<Expression> literal(std::initializer_list<double> value) {
std::vector<Value> values;
for (auto i : value) {
values.push_back(i);
}
return literal(values);
}
std::unique_ptr<Expression> literal(std::initializer_list<const char *> value) {
std::vector<Value> values;
for (auto i : value) {
values.push_back(std::string(i));
}
return literal(values);
}
std::unique_ptr<Expression> number(std::unique_ptr<Expression> value) {
return std::make_unique<Assertion>(type::Number, vec(std::move(value)));
}
std::unique_ptr<Expression> string(std::unique_ptr<Expression> value) {
return std::make_unique<Assertion>(type::String, vec(std::move(value)));
}
std::unique_ptr<Expression> toColor(const char* value) {
return toColor(literal(value));
}
std::unique_ptr<Expression> toColor(std::unique_ptr<Expression> value) {
return std::make_unique<Coercion>(type::Color, vec(std::move(value)));
}
std::unique_ptr<Expression> get(const char* value) {
return get(literal(value));
}
std::unique_ptr<Expression> get(std::unique_ptr<Expression> property) {
return compound("get", std::move(property));
}
std::unique_ptr<Expression> id() {
return compound("id");
}
std::unique_ptr<Expression> zoom() {
return compound("zoom");
}
std::unique_ptr<Expression> eq(std::unique_ptr<Expression> lhs,
std::unique_ptr<Expression> rhs) {
return std::make_unique<Equals>(std::move(lhs), std::move(rhs), nullopt, false);
}
std::unique_ptr<Expression> ne(std::unique_ptr<Expression> lhs,
std::unique_ptr<Expression> rhs) {
return std::make_unique<Equals>(std::move(lhs), std::move(rhs), nullopt, true);
}
std::unique_ptr<Expression> gt(std::unique_ptr<Expression> lhs,
std::unique_ptr<Expression> rhs) {
return compound(">", std::move(lhs), std::move(rhs));
}
std::unique_ptr<Expression> lt(std::unique_ptr<Expression> lhs,
std::unique_ptr<Expression> rhs) {
return compound("<", std::move(lhs), std::move(rhs));
}
std::unique_ptr<Expression> step(std::unique_ptr<Expression> input,
std::unique_ptr<Expression> output0,
double input1, std::unique_ptr<Expression> output1) {
type::Type type = output0->getType();
std::map<double, std::unique_ptr<Expression>> stops;
stops[-std::numeric_limits<double>::infinity()] = std::move(output0);
stops[input1] = std::move(output1);
return std::make_unique<Step>(type, std::move(input), std::move(stops));
}
Interpolator linear() {
return ExponentialInterpolator(1.0);
}
Interpolator exponential(double base) {
return ExponentialInterpolator(base);
}
Interpolator cubicBezier(double x1, double y1, double x2, double y2) {
return CubicBezierInterpolator(x1, y1, x2, y2);
}
std::unique_ptr<Expression> interpolate(Interpolator interpolator,
std::unique_ptr<Expression> input,
double input1, std::unique_ptr<Expression> output1) {
type::Type type = output1->getType();
std::map<double, std::unique_ptr<Expression>> stops;
stops[input1] = std::move(output1);
ParsingContext ctx;
ParseResult result = createInterpolate(type, interpolator, std::move(input), std::move(stops), ctx);
assert(result);
return std::move(*result);
}
std::unique_ptr<Expression> interpolate(Interpolator interpolator,
std::unique_ptr<Expression> input,
double input1, std::unique_ptr<Expression> output1,
double input2, std::unique_ptr<Expression> output2) {
type::Type type = output1->getType();
std::map<double, std::unique_ptr<Expression>> stops;
stops[input1] = std::move(output1);
stops[input2] = std::move(output2);
ParsingContext ctx;
ParseResult result = createInterpolate(type, interpolator, std::move(input), std::move(stops), ctx);
assert(result);
return std::move(*result);
}
std::unique_ptr<Expression> interpolate(Interpolator interpolator,
std::unique_ptr<Expression> input,
double input1, std::unique_ptr<Expression> output1,
double input2, std::unique_ptr<Expression> output2,
double input3, std::unique_ptr<Expression> output3) {
type::Type type = output1->getType();
std::map<double, std::unique_ptr<Expression>> stops;
stops[input1] = std::move(output1);
stops[input2] = std::move(output2);
stops[input3] = std::move(output3);
ParsingContext ctx;
ParseResult result = createInterpolate(type, interpolator, std::move(input), std::move(stops), ctx);
assert(result);
return std::move(*result);
}
} // namespace dsl
} // namespace expression
} // namespace style
} // namespace mbgl
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