Transform all async ast nodes into sync nodes #158
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so that they can be handled identically. Sync and async nodes propagate taint in exactly the same way. Awaits are more or less removed: `return await x()` is converted into `return x()`. Any AsyncFunctionDef is converted to a FunctionDef. Same for AsyncFor and AsyncWith. Using a transformer makes it easier to replace awaits everywhere. We have lots of places where we do `isinstance(node, ast.Call)` but for these we want it to function like `isinstance(node, ast.Call) or (isinstance(node, ast.Await) and isinstance(node.value, ast.Call))`
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This is genius! 😁 I'll review later today |
KevinHock
approved these changes
Jul 31, 2018
| from pyt.core.transformer import AsyncTransformer | ||
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| class TransformerTest(unittest.TestCase): |
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Transform all async ast nodes into sync nodes …
so that they can be handled identically. Sync and async nodes propagate
taint in exactly the same way.
Awaits are more or less removed:
return await x()is converted intoreturn x().Any AsyncFunctionDef is converted to a FunctionDef.
Same for AsyncFor and AsyncWith.
Using a transformer makes it easier to replace awaits everywhere (c.f. a different attempt at https://github.com/bcaller/pyt/commits/await ).
We have lots of places where we do
isinstance(node, ast.Call)but for these we want it to function likeisinstance(node, ast.Call) or (isinstance(node, ast.Await) and isinstance(node.value, ast.Call))