Toolbox for working with the Python AST
Project description
Toolbox for working with the Python AST
pip install ast_tools
Useful References
Macros
Loop Unrolling
Unroll loops using the pattern
for <var> in ast_tools.macros.unroll(<iter>):
...
<iter> should be an iterable object that produces integers (e.g. range(8))
that can be evaluated at definition time (can refer to variables in the scope
of the function definition)
For example,
from ast_tools.passes import begin_rewrite, loop_unroll, end_rewrite
@end_rewrite()
@loop_unroll()
@begin_rewrite()
def foo():
for i in ast_tools.macros.unroll(range(8)):
print(i)
is rewritten into
def foo():
print(0)
print(1)
print(2)
print(3)
print(4)
print(5)
print(6)
print(7)
You can also use a list of ints, here's an example that also uses a reference
to a variable defined in the outer scope:
from ast_tools.passes import begin_rewrite, loop_unroll, end_rewrite
j = [1, 2, 3]
@end_rewrite()
@loop_unroll()
@begin_rewrite()
def foo():
for i in ast_tools.macros.unroll(j):
print(i)
becomes
def foo():
print(1)
print(2)
print(3)
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