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add callbacks

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pantor
2018-02-17 14:06:38 +01:00
parent ae5ddb3b79
commit ee2451edae
3 changed files with 109 additions and 15 deletions
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36
test/src/unit-renderer.cpp
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@@ -135,6 +135,38 @@ TEST_CASE("functions") {
}
}
TEST_CASE("callbacks") {
inja::Environment env = inja::Environment();
json data;
data["age"] = 28;
env.add_callback("double", 1, [&env](inja::Parsed::Arguments args, json data) {
const int number = env.renderer.eval_expression<int>(args[0], data);
return 2 * number;
});
env.add_callback("half", 1, [&env](inja::Parsed::Arguments args, json data) {
const int number = env.renderer.eval_expression<int>(args[0], data);
return number / 2;
});
std::string greet = "Hello";
env.add_callback("double-greetings", 0, [&env, greet](inja::Parsed::Arguments args, json data) {
return greet + " " + greet + "!";
});
env.add_callback("multiply", 2, [&env](inja::Parsed::Arguments args, json data) {
const double number1 = env.renderer.eval_expression<double>(args[0], data);
const double number2 = env.renderer.eval_expression<double>(args[1], data);
return number1 * number2;
});
CHECK( env.render("{{ double(age) }}", data) == "56" );
CHECK( env.render("{{ half(age) }}", data) == "14" );
CHECK( env.render("{{ double-greetings }}", data) == "Hello Hello!" );
CHECK( env.render("{{ multiply(4, 5) }}", data) == "20.0" );
}
TEST_CASE("combinations") {
inja::Environment env = inja::Environment();
json data;
@@ -161,11 +193,11 @@ TEST_CASE("templates") {
data["city"] = "Brunswick";
data["is_happy"] = true;
CHECK( temp.render(data) == "Peter" );
CHECK( env.renderer.render(temp, data) == "Peter" );
data["is_happy"] = false;
CHECK( temp.render(data) == "Brunswick" );
CHECK( env.renderer.render(temp, data) == "Brunswick" );
}
TEST_CASE("other-syntax") {