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Fix lambdas without params. in Python. #479

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Fix lambdas without params. in Python. #479

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10 changes: 7 additions & 3 deletions languages/tree-sitter-stack-graphs-python/src/stack-graphs.tsg
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Original file line number Diff line number Diff line change
Expand Up @@ -768,7 +768,7 @@ inherit .parent_module
body: (_) @body
) @func
(lambda
parameters: (_) @params
parameters: (_)? @params
body: (_) @body
)@func
] {
Expand All @@ -777,12 +777,16 @@ inherit .parent_module
node drop_scope

edge @func.call -> return_value
edge @body.before_scope -> @params.after_scope
if some @params {
edge @body.before_scope -> @params.after_scope
}
edge @body.before_scope -> drop_scope
edge drop_scope -> @func.bottom
attr (drop_scope) type = "drop_scopes"
attr (@func.call) pop_scoped_symbol = "()"
edge @params.before_scope -> JUMP_TO_SCOPE_NODE
if some @params {
edge @params.before_scope -> JUMP_TO_SCOPE_NODE
}
attr (return_value) is_exported
let @func.function_returns = return_value
}
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9 changes: 9 additions & 0 deletions languages/tree-sitter-stack-graphs-python/test/lambdas.py
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Original file line number Diff line number Diff line change
@@ -1,2 +1,11 @@
sorted([1, 2, 3], key=lambda x: x)
# ^ defined: 1

y = 42

foo = lambda: print(y)
# ^ defined: 4

bar = lambda daz: print(y, daz)
# ^ defined: 4
# ^ defined: 9