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Added an in operator to std.json.JSONValue. Tested when const/non-const

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This commit is contained in:
Mark Isaacson 2014-05-21 15:08:00 -07:00
parent 58112802ed
commit f457e4781c
1 changed files with 12 additions and 0 deletions
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12
std/json.d
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@ -342,6 +342,13 @@ struct JSONValue
return store.object[k]; return store.object[k];
} }
auto opBinaryRight(string op : "in")(string k) const
{
enforceEx!JSONException(type == JSON_TYPE.OBJECT,
"JSONValue is not an object");
return k in store.object;
}
/// Implements the foreach $(D opApply) interface for json arrays. /// Implements the foreach $(D opApply) interface for json arrays.
int opApply(int delegate(size_t index, ref JSONValue) dg) int opApply(int delegate(size_t index, ref JSONValue) dg)
{ {
@ -878,6 +885,11 @@ unittest
assert(jv.type == JSON_TYPE.OBJECT); assert(jv.type == JSON_TYPE.OBJECT);
assertNotThrown(jv.object); assertNotThrown(jv.object);
assertNotThrown(jv["key"]); assertNotThrown(jv["key"]);
assert("key" in jv);
assert("notAnElement" !in jv);
const cjv = jv;
assert("key" in cjv);
foreach(string key, value; jv) foreach(string key, value; jv)
{ {
static assert(is(typeof(value) == JSONValue)); static assert(is(typeof(value) == JSONValue));