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Re: [wtp-dev] Content assist


JSDT is under heavy reconstruction and we are making big and breaking changes.

I think your best approach is to use org.eclipse.wst.jsdt.ui.javaCompletionProposalComputer. If you need access to AST we plan to only keep The DOM AST which lives on org.eclipse.wst.jsdt.core.dom namespace. You can use **.internal.ui.javaeditor.ASTProvider to retrieve AST.

If you are targeting only Mars and earlier than I would guess your first approach to work.
—
Gorkem


On 18 Apr 2016, at 19:01, Mathieu Larose wrote:

Hi all,

I'm writing a plugin based on JSDT and I would like to know what are my options for content assist.

The issue is that the types are generated dynamically based on the user's environment. For instance, I cannot generate files and add them to the include path as it is done for system.js.

I tried the following extension points:

1. ASTProvider

I extended InferEngine and in the doInfer I add the types (InferEngine.addType) to the current CompilationUnitDeclaration and then call super.doInfer. Since I don't want to see the types in the outline, I set them as anonymous.

This works for code completion, but not for text hover.

2. org.eclipse.wst.jsdt.core.JsGlobalScopeContainerInitializer

The include path seems to only accept JavaScript source files. So it's not possible to execute arbitrary code that add types.


I think I can use org.eclipse.wst.jsdt.ui.javaCompletionProposalComputer and org.eclipse.wst.jsdt.ui.javaEditorTextHovers, but it means I need to bring my own parser/type inference since I could not use CompilationUnit.codeComplete and SelectionEngine.select.

Before trying this, I would like to know if I missed something. If not, I would like to get your suggestions.

Any help is appreciated!

Thank you,
Mathieu Larose
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