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35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
# Call Hierarchy Provider Sample
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This sample shows the **Call Hierarchy** in action based on a simple food pyramid model defined using simple subject ~ verb ~ object syntax.
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## VS Code API
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### `vscode` module
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- [`languages.registerCallHierarchyProvider`](https://code.visualstudio.com/api/references/vscode-api#languages.registerCallHierarchyProvider)
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- [`CallHierarchyProvider`](https://code.visualstudio.com/api/references/vscode-api#CallHierarchyProvider)
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## Running the Sample
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Start the extension in the debugger and it automatically opens a file that is ready for the right-click > Peek Call Hierarchy. Otherwise, it can be testing by creating a file with extension `.txt` and pasting following text:
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```plaintext
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Coyote eats deer.
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Deer eats plants.
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Coyote eats lizard.
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Lizard eats bird.
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Lizard eats frog.
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Lizard eats butterfly.
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Bird eats seeds.
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Frog eats insects.
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Butterfly eats fruit.
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```
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Right click on a noun or a verb and select _Peek Call Hierarchy_.
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## Contributing to the Sample and Testing the Sample
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Run the _Run Extension Tests_ configuration and verify in the Debug Console that all tests are passing.
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