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Implement Expressions (#9439)

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Ports https://github.com/mapbox/mapbox-gl-js/pull/4777 (and its several follow-ups)
This commit is contained in:
Anand Thakker
2017-11-08 12:34:02 -05:00
committed by GitHub
parent 9aac976104
commit f648cfeef6
167 changed files with 6474 additions and 189 deletions
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28
test/style/conversion/function.test.cpp
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@@ -3,6 +3,8 @@
#include <mbgl/style/conversion/json.hpp>
#include <mbgl/style/conversion/constant.hpp>
#include <mbgl/style/conversion/function.hpp>
#include <mbgl/style/conversion/data_driven_property_value.hpp>
#include <mbgl/util/rapidjson.hpp>
using namespace mbgl;
using namespace mbgl::style;
@@ -50,3 +52,29 @@ TEST(StyleConversion, Function) {
ASSERT_FALSE(fn9);
ASSERT_EQ("function base must be a number", error.message);
}
TEST(StyleConversion, CompositeFunctionExpression) {
Error error;
auto parseFunction = [&](const std::string& src) {
JSDocument doc;
doc.Parse<0>(src);
return convert<DataDrivenPropertyValue<float>>(doc, error);
};
auto fn1 = parseFunction(R"(["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10])");
ASSERT_TRUE(fn1);
auto fn2 = parseFunction(R"(["coalesce", ["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10], 0])");
ASSERT_TRUE(fn2);
auto fn3 = parseFunction(R"(["let", "a", 0, ["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10] ])");
ASSERT_TRUE(fn3);
auto fn4 = parseFunction(R"(["coalesce", ["let", "a", 0, ["interpolate", ["linear"], ["zoom"], 0, ["number", ["get", "x"]], 10, 10], 0 ])");
ASSERT_TRUE(fn4);
auto fn5 = parseFunction(R"(["coalesce", ["interpolate", ["linear"], ["number", ["get", "x"]], 0, ["zoom"], 10, 10], 0])");
ASSERT_FALSE(fn5);
ASSERT_EQ(R"("zoom" expression may only be used as input to a top-level "step" or "interpolate" expression.)", error.message);
}