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Find Method Parameters

hphp/hack/manual/apis/Functions/HH.ExperimentalParserUtils/find_method_parameters.md

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:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

Instead of doing a full recursion like the lambda extractor, this function can do a shallow search of the tree to collect methods by name

Hack
namespace HH\ExperimentalParserUtils;

function find_method_parameters(
  \HH\ParseTree $json,
  string $method_name,
  int $line_number,
): MethodParametersNode;

If there is a tie, use the line number

Parameters

  • \HH\ParseTree $json
  • string $method_name
  • int $line_number

Returns

  • MethodParametersNode
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