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system.fields|fieldPairs for objects

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Araq
2013-02-18 17:23:26 +01:00
parent 8e9b39084c
commit d15981adbc
5 changed files with 170 additions and 37 deletions
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lib/system.nim
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@@ -1508,23 +1508,24 @@ proc map*[T](data: var openArray[T], op: proc (x: var T) {.closure.}) =
## # --> ["142", "242", "342", "442"]
for i in 0..data.len-1: op(data[i])
iterator fields*[T: tuple](x: T): TObject {.
iterator fields*[T: tuple|object](x: T): TObject {.
magic: "Fields", noSideEffect.}
## iterates over every field of `x`. Warning: This really transforms
## the 'for' and unrolls the loop. The current implementation also has a bug
## that affects symbol binding in the loop body.
iterator fields*[S: tuple, T: tuple](x: S, y: T): tuple[a, b: expr] {.
iterator fields*[S:tuple|object, T:tuple|object](x: S, y: T): tuple[a,b: expr] {.
magic: "Fields", noSideEffect.}
## iterates over every field of `x` and `y`.
## Warning: This is really transforms the 'for' and unrolls the loop.
## The current implementation also has a bug that affects symbol binding
## in the loop body.
iterator fieldPairs*[T: tuple](x: T): TObject {.
iterator fieldPairs*[T: tuple|object](x: T): TObject {.
magic: "FieldPairs", noSideEffect.}
## iterates over every field of `x`. Warning: This really transforms
## the 'for' and unrolls the loop. The current implementation also has a bug
## that affects symbol binding in the loop body.
iterator fieldPairs*[S: tuple, T: tuple](x: S, y: T): tuple[a, b: expr] {.
iterator fieldPairs*[S: tuple|object, T: tuple|object](x: S, y: T): tuple[
a, b: expr] {.
magic: "FieldPairs", noSideEffect.}
## iterates over every field of `x` and `y`.
## Warning: This really transforms the 'for' and unrolls the loop.