Perform constant propagation as part of/immediately after parsing the AST

purpleidea / mgmt

Next generation distributed, event-driven, parallel config management!

https://purpleidea.com/tags/mgmtconfig/

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Perform constant propagation as part of/immediately after parsing the AST #672

Open frebib opened 3 years ago

frebib commented 3 years ago

Constant propagation can somewhat/significantly reduce the complexity of the function graph by "merging" vertexes of constant and/or pure functions together.

Some things that could be simplified are:

Numbers (ints/floats)
Boolean expressions
String literals
(All literal expressions, including the above)
Identity functions
Functions that ignore all arguments
...