Macros

Call a method given by its symbol.

E.g.

assuming:

def foo(x: Int, y: String)(z: Int)

val argss: List[List[Any]] = ???

then:

call(, '{argss})

will expand to:

foo(argss(0)(0), argss(0)(1))(argss(1)(0))

Check that decorator inner and outer return types match.

This replicates EndpointMetadata.seqify, but in a macro where error positions can be controlled.

Convert a result to an HTTP response

Note: essentially, all this method does is summon a cask.internal.Conversion and provide a helpful error message if it cannot be found. In this case, one could wonder why we do the implicit summoning in this macro, rather than emit "regular" code which does the summoning. The reason is to provide helpful error messages with correct positions. We can control the position in the macro, but if the error were to come from the expanded code the position would be completely off.

The type of paramters displayed in error messages

Lookup default values for a method's parameters.

Summon the reader for a parameter.