Feature: Add method handling to mixin processing in KDL #2100

Bashamega · 2025-08-03T08:10:54Z

related #2053

github-actions · 2025-08-03T08:11:06Z

Thanks for the PR!

This section of the codebase is owned by @saschanaz - if they write a comment saying "LGTM" then it will be merged.

saschanaz · 2025-08-03T13:25:03Z

inputfiles/patches/dom.kdl

@@ -0,0 +1,12 @@
+// Manually moved from Document


cssom-view.kdl

saschanaz · 2025-08-03T13:29:30Z

src/build/patches.ts

+function handleMethod(child: Node): Partial<Method> {
+  const name = child.values[0] as string;
+  // Build the overrideSignatures array with the method signature string
+  const overrideSignatures = [


We should not use overrideSignatures unless it's explicitly used. Take a look at widlprocess.ts to see how to proceed: (this PR does not need to cover everything in that file)

TypeScript-DOM-lib-generator/src/build/widlprocess.ts

Lines 192 to 204 in 23819c7

} else if (member.type === "operation") {

const operation = convertOperation(member, result.exposed);

const { method } = result.methods;

if (!member.name) {

result.anonymousMethods!.method.push(operation);

} else if (method.hasOwnProperty(member.name)) {

method[member.name].signature.push(...operation.signature);

} else {

method[member.name] = operation as Browser.Method;

}

if (member.name) {

addComments(method[member.name], commentMap, i.name, member.name);

}

inputfiles/patches/cssom-view.kd

Co-authored-by: Kagami Sascha Rosylight <[email protected]>

…meters and update return types for elementFromPoint and elementsFromPoint methods. Enhance method handling in patches.ts to accommodate nullable return types and array signatures.

Bashamega · 2025-08-03T14:41:38Z

I've updated it, @saschanaz.
I used array instead of wrapping the return value with a sequence. If you still prefer your version, I can make it work with a regex. That said, I believe the current implementation is better for the parser.

saschanaz · 2025-08-03T15:07:47Z

inputfiles/patches/cssom-view.kd

@@ -0,0 +1,12 @@
+// Manually moved from Document


.kdl, not .kd 😛

Also maybe 2-space indent to be consistent with the rest of the code 👀

I have fixed the name

but not the indent 👀

I forgot, I have updated them

saschanaz · 2025-08-03T15:22:44Z

inputfiles/patches/cssom-view.kd

+        param x type=long
+        param y type=long
+    }
+    method elementsFromPoint returns="Element" array {


Would be nice to follow the syntax of

TypeScript-DOM-lib-generator/src/build/types.d.ts

Lines 1 to 8 in 23819c7

export interface Typed {

type: string | Typed[];

subtype?: Typed | Typed[];

nullable?: boolean;

overrideType?: string;

additionalTypes?: string[];

allowShared?: boolean;

}

But that doesn't seem possible as a property. Perhaps we should allow (but not force) type as a member for complex cases like this.

method elementsFromPoint { type sequence { type Element } param x type=long param y type=long }

Bashamega · 2025-08-04T12:12:38Z

I have updated it @saschanaz

Bashamega · 2025-08-05T09:46:23Z

Hello @saschanaz
Do you have any more requests for this PR?

saschanaz · 2025-08-06T07:57:12Z

inputfiles/patches/cssom-view.kdl

+// Manually moved from Document
+// See https://github.com/w3c/csswg-drafts/issues/5886 and https://github.com/w3c/csswg-drafts/issues/556
+interface-mixin DocumentOrShadowRoot {
+  method elementFromPoint returns=Element nullable=#true {


nullable is logically a property of the return type rather than the method, so in this case it would be also nicer to use separate type node as below.

saschanaz · 2025-08-06T07:59:53Z

src/build/patches.ts

+
+  const signature: Method["signature"] = [
+    {
+      type: type.name == "type" ? (type.values[0] as string) : returnType,


We'll probably get similar situation on other things than methods, this should probably be done in a helper function so that others can reuse it, something like handleTyped.

I have made it a helper function

saschanaz · 2025-08-06T08:01:46Z

src/build/patches.ts

+  const nullable = child.properties.nullable as boolean;
+
+  const params = child.children
+    .filter((c) => c.values[0] != "sequence")


It should filter in based on the type param, not filter out based on name?

Bashamega · 2025-08-07T06:23:01Z

I have updated it @saschanaz

Bashamega · 2025-08-10T07:37:26Z

Hello @saschanaz
Do you have any more requests for this PR?

Feature: Add method handling to mixin processing in KDL

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saschanaz reviewed Aug 3, 2025

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Bashamega added 3 commits August 3, 2025 16:39

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saschanaz reviewed Aug 3, 2025

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Bashamega and others added 3 commits August 3, 2025 16:50

Update inputfiles/patches/cssom-view.kd

2fcb5b9

Co-authored-by: Kagami Sascha Rosylight <[email protected]>

Update inputfiles/patches/cssom-view.kd

e6da694

Co-authored-by: Kagami Sascha Rosylight <[email protected]>

Refactor method signatures in cssom-view.kd to use long type for para…

37825cf

…meters and update return types for elementFromPoint and elementsFromPoint methods. Enhance method handling in patches.ts to accommodate nullable return types and array signatures.

saschanaz reviewed Aug 3, 2025

View reviewed changes

Bashamega and others added 5 commits August 3, 2025 18:31

Update and rename cssom-view.kd to cssom-view.kdl

c095db7

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Merge Branches

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Merge branch 'main' into kdl/method

8f7ca28

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saschanaz reviewed Aug 6, 2025

View reviewed changes

Bashamega and others added 4 commits August 7, 2025 08:58

Merge branch 'main' into kdl/method

7338aab

chore: split function

333fb26

filter on param

ea16eb1

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fcd4188

Bashamega requested a review from saschanaz August 7, 2025 06:23

	} else if (member.type === "operation") {
	const operation = convertOperation(member, result.exposed);
	const { method } = result.methods;
	if (!member.name) {
	result.anonymousMethods!.method.push(operation);
	} else if (method.hasOwnProperty(member.name)) {
	method[member.name].signature.push(...operation.signature);
	} else {
	method[member.name] = operation as Browser.Method;
	}
	if (member.name) {
	addComments(method[member.name], commentMap, i.name, member.name);
	}

	export interface Typed {
	type: string \| Typed[];
	subtype?: Typed \| Typed[];
	nullable?: boolean;
	overrideType?: string;
	additionalTypes?: string[];
	allowShared?: boolean;
	}

Feature: Add method handling to mixin processing in KDL #2100

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Bashamega commented Aug 3, 2025

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Bashamega commented Aug 7, 2025

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