Add Dictionary.find_key()

3 files changed, 11 insertions, 0 deletions

diff --git a/core/variant/dictionary.cpp b/core/variant/dictionary.cpp
index d9f4359ee5..c1cb782a57 100644
--- a/core/variant/dictionary.cpp
+++ b/core/variant/dictionary.cpp
@@ -195,6 +195,15 @@ bool Dictionary::has_all(const Array &p_keys) const {
 	return true;
 }
 
+Variant Dictionary::find_key(const Variant &p_value) const {
+	for (const KeyValue<Variant, Variant> &E : _p->variant_map) {
+		if (E.value == p_value) {
+			return E.key;
+		}
+	}
+	return Variant();
+}
+
 bool Dictionary::erase(const Variant &p_key) {
 	ERR_FAIL_COND_V_MSG(_p->read_only, false, "Dictionary is in read-only state.");
 	if (p_key.get_type() == Variant::STRING_NAME) {
diff --git a/core/variant/dictionary.h b/core/variant/dictionary.h
index 2632893e8d..d9c9db56cf 100644
--- a/core/variant/dictionary.h
+++ b/core/variant/dictionary.h
@@ -66,6 +66,7 @@ public:
 
 	bool has(const Variant &p_key) const;
 	bool has_all(const Array &p_keys) const;
+	Variant find_key(const Variant &p_value) const;
 
 	bool erase(const Variant &p_key);
 
diff --git a/core/variant/variant_call.cpp b/core/variant/variant_call.cpp
index eba12b68bb..ab262629da 100644
--- a/core/variant/variant_call.cpp
+++ b/core/variant/variant_call.cpp
@@ -2009,6 +2009,7 @@ static void _register_variant_builtin_methods() {
 	bind_method(Dictionary, merge, sarray("dictionary", "overwrite"), varray(false));
 	bind_method(Dictionary, has, sarray("key"), varray());
 	bind_method(Dictionary, has_all, sarray("keys"), varray());
+	bind_method(Dictionary, find_key, sarray("value"), varray());
 	bind_method(Dictionary, erase, sarray("key"), varray());
 	bind_method(Dictionary, hash, sarray(), varray());
 	bind_method(Dictionary, keys, sarray(), varray());