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Add get with type conversion for convenience

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Mike Bierlee 2022-09-24 19:42:29 +03:00
parent 32598ca434
commit cb8e737e6c
1 changed files with 29 additions and 1 deletions
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30
source/mirage/config.d
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@ -229,7 +229,7 @@ class ConfigDictionary {
* and have a more specific way of retrieving data from the config. See the examples and specific config factories for * and have a more specific way of retrieving data from the config. See the examples and specific config factories for
* more details. * more details.
* *
* Returns: The value at the path in the configuration. It is always a string so the user will have to convert it to other types. * Returns: The value at the path in the configuration. To convert it use get!T().
*/ */
string get(string configPath) { string get(string configPath) {
enforce!ConfigReadException(rootNode !is null, "The config is empty"); enforce!ConfigReadException(rootNode !is null, "The config is empty");
@ -307,6 +307,17 @@ class ConfigDictionary {
"Value expected but " ~ currentNode.nodeType ~ " found at path: " ~ createExceptionPath()); "Value expected but " ~ currentNode.nodeType ~ " found at path: " ~ createExceptionPath());
} }
} }
/**
* Get values from the configuration and attempts to convert them to the specified type.
*
* Params:
* configPath = Path to the wanted config value. See get().
* Returns: The value at the path in the configuration.
*/
ConvertToType get(ConvertToType)(string configPath) {
return get(configPath).to!ConvertToType;
}
} }
/** /**
@ -337,6 +348,7 @@ abstract class ConfigFactory {
version (unittest) { version (unittest) {
import std.exception : assertThrown; import std.exception : assertThrown;
import std.math.operations : isClose;
@("Dictionary creation") @("Dictionary creation")
unittest { unittest {
@ -521,4 +533,20 @@ version (unittest) {
assert(dictionary.get("one.two[1]") == "mino"); assert(dictionary.get("one.two[1]") == "mino");
} }
@("Get and convert values")
unittest {
auto dictionary = new ConfigDictionary();
dictionary.rootNode = new ObjectNode([
"uno": new ValueNode("1223"),
"dos": new ValueNode("true"),
"tres": new ValueNode("Hi you"),
"quatro": new ValueNode("1.3")
]);
assert(dictionary.get!int("uno") == 1223);
assert(dictionary.get!bool("dos") == true);
assert(dictionary.get!string("tres") == "Hi you");
assert(isClose(dictionary.get!float("quatro"), 1.3));
}
} }