Use K"function" for short form function AST
#466
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c42f
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K"function" for short form funtion ASTK"function" for short form function AST
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looks good to me. Does it handle all 4 of these? f(x) = 10
f(x)::R = 10
f(x::T) where T = 10
f(x::T)::R where T = 10 |
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This is semantically incorrect and will be caught by lowering. But technically making it a parser error would be breaking :-(
This is a simple fix for the tests, but a better solution is to make Expr equivalence more permissive to accommodate having better line information in the new parser!
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This form isn't a short form function definition, so should be parsed with `=` kind.
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…jl#466) A pain point when writing macros is detecting all the types of things which might be lowered to functions. This is partly due to the existence of short form function definitions which in Julia's classic AST parse with `:(=)` rather than a `:function` head - to detect the meaning of `=`, one needs to traverse recursively into the left hand side of the expression. This change modifies the parsing of short form functions to use the `K"function"` kind. A new syntax flag `SHORT_FORM_FUNCTION_FLAG` is set to enable AST consumers to detect short vs long form functions.
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…jl#466) A pain point when writing macros is detecting all the types of things which might be lowered to functions. This is partly due to the existence of short form function definitions which in Julia's classic AST parse with `:(=)` rather than a `:function` head - to detect the meaning of `=`, one needs to traverse recursively into the left hand side of the expression. This change modifies the parsing of short form functions to use the `K"function"` kind. A new syntax flag `SHORT_FORM_FUNCTION_FLAG` is set to enable AST consumers to detect short vs long form functions.
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Fix #465 - see rationale there.
Fixing this turned out to be quite easy.
Compat:
Expr