AST: Rearrange do to sit inside call/macrocall
#322
Merged
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dosyntax is represented inExprwith thedooutside the call. This makes some sense syntactically (do appears as "an operator" after the function call).However semantically this nesting is awkward because the lambda represented by the do block is passed to the call. This same problem occurs for the macro form
@f(x) do \n body endwhere the macro expander needs a special rule to expand nestings of the formExpr(:do, Expr(:macrocall ...), ...), rearranging the expression which are passed to this macro call rather than passing the expressions up the tree.In this PR, we change the parsing of
to tack the
doonto the end of the call argument list:This achieves the following desirable properties
dois nested inside the call which improves the match between AST and semanticsdohead is used uniformly for both call and macrocallFix #319