Lua

The Lua extractor maps tree-sitter Lua CST nodes to canonical concepts. Function names come from the standard name field; local variable names come from the variable list under the declaration.

Detected concepts

tree-sitter node type	Canonical concept
`function_declaration`	Function
`variable_declaration`	Variable
`assignment_statement`	Assignment
`table_constructor`	ObjectLiteral
`field`	KeyValuePair
`function_call`	CallExpression
`dot_index_expression`	MemberAccess
`method_index_expression`	MethodCall
`if_statement`	IfBlock
`for_statement`	ForLoop
`return_statement`	Return
`number`	number_literal

Example

Renaming a function:

old.lua

function total(n)
  return n + 1
end

new.lua

function sum(n)
  return n + 1
end

Running differens old.lua new.lua:

  ~ renamed function `total` to `sum`

Example: change the body

Keep the declaration name and change what it does:

function total(n)
  return n + 1
end

function total(n)
  return n + 2
end

differens body-before.lua body-after.lua

  ~ changed function `total` (`1` → `2`)

The report groups the value edit under its containing declaration. Use --format=json to inspect the underlying action and context, or --format=llm for a compact report with source locations.

Known limitations

Lua has no int/float split; every number literal reports as number_literal.
Metatable calls (obj:method()) report as method calls only when written as method-index syntax.

Semantic Extractors

Tier Adapters

Detected concepts

Example

Example: change the body

Known limitations