Add search keywords to the class reference

core/doc_data.h

@@ -117,6 +117,7 @@ class DocData {
 		bool is_experimental = false;
 		Vector<ArgumentDoc> arguments;
 		Vector<int> errors_returned;
+		String keywords;
 		bool operator<(const MethodDoc &p_method) const {
 			if (name == p_method.name) {
 				// Must be an operator or a constructor since there is no other overloading
@@ -195,6 +196,10 @@ class DocData {
 				doc.errors_returned.push_back(errors_returned[i]);
 			}
 
+			if (p_dict.has("keywords")) {
+				doc.keywords = p_dict["keywords"];
+			}
+
 			return doc;
 		}
 		static Dictionary to_dict(const MethodDoc &p_doc) {
@@ -225,6 +230,10 @@ class DocData {
 
 			dict["is_experimental"] = p_doc.is_experimental;
 
+			if (!p_doc.keywords.is_empty()) {
+				dict["keywords"] = p_doc.keywords;
+			}
+
 			if (!p_doc.arguments.is_empty()) {
 				Array arguments;
 				for (int i = 0; i < p_doc.arguments.size(); i++) {
@@ -254,6 +263,7 @@ class DocData {
 		String description;
 		bool is_deprecated = false;
 		bool is_experimental = false;
+		String keywords;
 		bool operator<(const ConstantDoc &p_const) const {
 			return name < p_const.name;
 		}
@@ -291,6 +301,10 @@ class DocData {
 				doc.is_experimental = p_dict["is_experimental"];
 			}
 
+			if (p_dict.has("keywords")) {
+				doc.keywords = p_dict["keywords"];
+			}
+
 			return doc;
 		}
 		static Dictionary to_dict(const ConstantDoc &p_doc) {
@@ -319,6 +333,10 @@ class DocData {
 
 			dict["is_experimental"] = p_doc.is_experimental;
 
+			if (!p_doc.keywords.is_empty()) {
+				dict["keywords"] = p_doc.keywords;
+			}
+
 			return dict;
 		}
 	};
@@ -335,6 +353,7 @@ class DocData {
 		String overrides;
 		bool is_deprecated = false;
 		bool is_experimental = false;
+		String keywords;
 		bool operator<(const PropertyDoc &p_prop) const {
 			return name.naturalcasecmp_to(p_prop.name) < 0;
 		}
@@ -388,6 +407,10 @@ class DocData {
 				doc.is_experimental = p_dict["is_experimental"];
 			}
 
+			if (p_dict.has("keywords")) {
+				doc.keywords = p_dict["keywords"];
+			}
+
 			return doc;
 		}
 		static Dictionary to_dict(const PropertyDoc &p_doc) {
@@ -432,6 +455,10 @@ class DocData {
 
 			dict["is_experimental"] = p_doc.is_experimental;
 
+			if (!p_doc.keywords.is_empty()) {
+				dict["keywords"] = p_doc.keywords;
+			}
+
 			return dict;
 		}
 	};
@@ -442,6 +469,7 @@ class DocData {
 		String data_type;
 		String description;
 		String default_value;
+		String keywords;
 		bool operator<(const ThemeItemDoc &p_theme_item) const {
 			// First sort by the data type, then by name.
 			if (data_type == p_theme_item.data_type) {
@@ -472,6 +500,10 @@ class DocData {
 				doc.default_value = p_dict["default_value"];
 			}
 
+			if (p_dict.has("keywords")) {
+				doc.keywords = p_dict["keywords"];
+			}
+
 			return doc;
 		}
 		static Dictionary to_dict(const ThemeItemDoc &p_doc) {
@@ -497,6 +529,10 @@ class DocData {
 				dict["default_value"] = p_doc.default_value;
 			}
 
+			if (!p_doc.keywords.is_empty()) {
+				dict["keywords"] = p_doc.keywords;
+			}
+
 			return dict;
 		}
 	};
@@ -573,6 +609,7 @@ class DocData {
 		String inherits;
 		String brief_description;
 		String description;
+		String keywords;
 		Vector<TutorialDoc> tutorials;
 		Vector<MethodDoc> constructors;
 		Vector<MethodDoc> methods;
@@ -609,6 +646,10 @@ class DocData {
 				doc.description = p_dict["description"];
 			}
 
+			if (p_dict.has("keywords")) {
+				doc.keywords = p_dict["keywords"];
+			}
+
 			Array tutorials;
 			if (p_dict.has("tutorials")) {
 				tutorials = p_dict["tutorials"];
@@ -816,6 +857,10 @@ class DocData {
 				dict["script_path"] = p_doc.script_path;
 			}
 
+			if (!p_doc.keywords.is_empty()) {
+				dict["keywords"] = p_doc.keywords;
+			}
+
 			return dict;
 		}
 	};

doc/class.xsd

@@ -101,6 +101,7 @@
 									<xs:attribute type="xs:string" name="qualifiers" use="optional" />
 									<xs:attribute type="xs:boolean" name="is_deprecated" use="optional" />
 									<xs:attribute type="xs:boolean" name="is_experimental" use="optional" />
+									<xs:attribute type="xs:string" name="keywords" use="optional" />
 								</xs:complexType>
 							</xs:element>
 						</xs:sequence>
@@ -123,6 +124,7 @@
 											<xs:attribute type="xs:string" name="default" use="optional" />
 											<xs:attribute type="xs:boolean" name="is_deprecated" use="optional" />
 											<xs:attribute type="xs:boolean" name="is_experimental" use="optional" />
+											<xs:attribute type="xs:string" name="keywords" use="optional" />
 										</xs:extension>
 									</xs:simpleContent>
 								</xs:complexType>
@@ -144,6 +146,7 @@
 												<xs:attribute type="xs:byte" name="index" />
 												<xs:attribute type="xs:string" name="name" />
 												<xs:attribute type="xs:string" name="type" />
+												<xs:attribute type="xs:string" name="keywords" use="optional" />
 											</xs:complexType>
 										</xs:element>
 										<xs:element type="xs:string" name="description" />
@@ -169,6 +172,7 @@
 											<xs:attribute type="xs:boolean" name="is_bitfield" use="optional" />
 											<xs:attribute type="xs:boolean" name="is_deprecated" use="optional" />
 											<xs:attribute type="xs:boolean" name="is_experimental" use="optional" />
+											<xs:attribute type="xs:string" name="keywords" use="optional" />
 										</xs:extension>
 									</xs:simpleContent>
 								</xs:complexType>
@@ -209,6 +213,7 @@
 									</xs:sequence>
 									<xs:attribute type="xs:string" name="name" use="optional" />
 									<xs:attribute type="xs:string" name="qualifiers" use="optional" />
+									<xs:attribute type="xs:string" name="keywords" use="optional" />
 								</xs:complexType>
 							</xs:element>
 						</xs:sequence>
@@ -225,6 +230,7 @@
 											<xs:attribute type="xs:string" name="data_type" />
 											<xs:attribute type="xs:string" name="type" />
 											<xs:attribute type="xs:string" name="default" use="optional" />
+											<xs:attribute type="xs:string" name="keywords" use="optional" />
 										</xs:extension>
 									</xs:simpleContent>
 								</xs:complexType>
@@ -275,6 +281,7 @@
 			<xs:attribute type="xs:string" name="inherits" />
 			<xs:attribute type="xs:boolean" name="is_deprecated" use="optional" />
 			<xs:attribute type="xs:boolean" name="is_experimental" use="optional" />
+			<xs:attribute type="xs:string" name="keywords" use="optional" />
 		</xs:complexType>
 	</xs:element>
 </xs:schema>

doc/classes/@GlobalScope.xml

@@ -1080,7 +1080,7 @@
 				[b]Note:[/b] This function is called automatically when the project is run. If you need to fix the seed to have consistent, reproducible results, use [method seed] to initialize the random number generator.
 			</description>
 		</method>
-		<method name="remap">
+		<method name="remap" keywords="range, lerp">
 			<return type="float" />
 			<param index="0" name="value" type="float" />
 			<param index="1" name="istart" type="float" />

doc/classes/Area2D.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<class name="Area2D" inherits="CollisionObject2D" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+<class name="Area2D" inherits="CollisionObject2D" keywords="trigger" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
 		A region of 2D space that detects other [CollisionObject2D]s entering or exiting it.
 	</brief_description>

doc/classes/Area3D.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<class name="Area3D" inherits="CollisionObject3D" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+<class name="Area3D" inherits="CollisionObject3D" keywords="trigger" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
 		A region of 3D space that detects other [CollisionObject3D]s entering or exiting it.
 	</brief_description>

doc/classes/Array.xml

@@ -332,7 +332,7 @@
 				Returns the script associated with a typed array tied to a class name.
 			</description>
 		</method>
-		<method name="has" qualifiers="const">
+		<method name="has" qualifiers="const" keywords="includes, contains">
 			<return type="bool" />
 			<param index="0" name="value" type="Variant" />
 			<description>

doc/classes/DirAccess.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<class name="DirAccess" inherits="RefCounted" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+<class name="DirAccess" inherits="RefCounted" keywords="directory, path, folder" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
 		Provides methods for managing directories and their content.
 	</brief_description>

doc/classes/InputEventMouseButton.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<class name="InputEventMouseButton" inherits="InputEventMouse" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+<class name="InputEventMouseButton" inherits="InputEventMouse" keywords="click, press" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
 		Represents a mouse button being pressed or released.
 	</brief_description>

doc/classes/Node.xml

@@ -722,7 +722,7 @@
 				Calls [method Object.notification] with [param what] on this node and all of its children, recursively.
 			</description>
 		</method>
-		<method name="queue_free">
+		<method name="queue_free" keywords="delete, remove, kill, die">
 			<return type="void" />
 			<description>
 				Queues this node to be deleted at the end of the current frame. When deleted, all of its children are deleted as well, and all references to the node and its children become invalid.

doc/classes/Object.xml

@@ -623,7 +623,7 @@
 				[b]Note:[/b] In C#, [param signal] must be in snake_case when referring to built-in Godot signals. Prefer using the names exposed in the [code]SignalName[/code] class to avoid allocating a new [StringName] on each call.
 			</description>
 		</method>
-		<method name="free">
+		<method name="free" keywords="delete, remove, kill, die">
 			<return type="void" />
 			<description>
 				Deletes the object from memory. Pre-existing references to the object become invalid, and any attempt to access them will result in a run-time error. Checking the references with [method @GlobalScope.is_instance_valid] will return [code]false[/code].

doc/classes/PackedScene.xml

@@ -88,7 +88,7 @@
 				Returns the [SceneState] representing the scene file contents.
 			</description>
 		</method>
-		<method name="instantiate" qualifiers="const">
+		<method name="instantiate" qualifiers="const" keywords="create, make, spawn, new">
 			<return type="Node" />
 			<param index="0" name="edit_state" type="int" enum="PackedScene.GenEditState" default="0" />
 			<description>

doc/classes/PhysicalBone2D.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<class name="PhysicalBone2D" inherits="RigidBody2D" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+<class name="PhysicalBone2D" inherits="RigidBody2D" keywords="ragdoll" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
 		A [RigidBody2D]-derived node used to make [Bone2D]s in a [Skeleton2D] react to physics.
 	</brief_description>

doc/classes/PhysicalBone3D.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<class name="PhysicalBone3D" inherits="PhysicsBody3D" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+<class name="PhysicalBone3D" inherits="PhysicsBody3D" keywords="ragdoll" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
 	<brief_description>
 		A physics body used to make bones in a [Skeleton3D] react to physics.
 	</brief_description>

doc/classes/String.xml

@@ -41,7 +41,7 @@
 		</constructor>
 	</constructors>
 	<methods>
-		<method name="begins_with" qualifiers="const">
+		<method name="begins_with" qualifiers="const" keywords="starts_with">
 			<return type="bool" />
 			<param index="0" name="text" type="String" />
 			<description>
@@ -126,7 +126,7 @@
 				[/codeblock]
 			</description>
 		</method>
-		<method name="contains" qualifiers="const">
+		<method name="contains" qualifiers="const" keywords="includes, has">
 			<return type="bool" />
 			<param index="0" name="what" type="String" />
 			<description>

doc/tools/make_rst.py

@@ -166,6 +166,10 @@ def parse_class(self, class_root: ET.Element, filepath: str) -> None:
         if desc is not None and desc.text:
             class_def.description = desc.text
 
+        keywords = class_root.get("keywords")
+        if keywords is not None:
+            class_def.keywords = keywords
+
         properties = class_root.find("members")
         if properties is not None:
             for property in properties:
@@ -564,6 +568,7 @@ def __init__(self, name: str) -> None:
         self.brief_description: Optional[str] = None
         self.description: Optional[str] = None
         self.tutorials: List[Tuple[str, str]] = []
+        self.keywords: Optional[str] = None
 
         # Used to match the class with XML source for output filtering purposes.
         self.filepath: str = ""
@@ -866,6 +871,10 @@ def make_rst_class(class_def: ClassDef, state: State, dry_run: bool, output_dir:
     # Remove the "Edit on Github" button from the online docs page.
     f.write(":github_url: hide\n\n")
 
+    # Add keywords metadata.
+    if class_def.keywords is not None and class_def.keywords != "":
+        f.write(f".. meta::\n\t:keywords: {class_def.keywords}\n\n")
+
     # Warn contributors not to edit this file directly.
     # Also provide links to the source files for reference.