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close #16844 (#16852)

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* close #16844
* better
* comment
* Update compiler/renderer.nim
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flywind 2021-01-29 07:31:41 -06:00 • committed by GitHub
commit f09d97d6d3
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14
compiler/renderer.nim
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@ -820,14 +820,28 @@ proc gTypeClassTy(g: var TSrcGen, n: PNode) =
dedent(g) dedent(g)
proc gblock(g: var TSrcGen, n: PNode) = proc gblock(g: var TSrcGen, n: PNode) =
# you shouldn't simplify it to `n.len < 2`
# because the following codes should be executed
# even when block stmt has only one child for getting
# better error messages.
if n.len == 0:
return
var c: TContext var c: TContext
initContext(c) initContext(c)
if n[0].kind != nkEmpty: if n[0].kind != nkEmpty:
putWithSpace(g, tkBlock, "block") putWithSpace(g, tkBlock, "block")
gsub(g, n[0]) gsub(g, n[0])
else: else:
put(g, tkBlock, "block") put(g, tkBlock, "block")
# block stmt should have two children
if n.len == 1:
return
putWithSpace(g, tkColon, ":") putWithSpace(g, tkColon, ":")
if longMode(g, n) or (lsub(g, n[1]) + g.lineLen > MaxLineLen): if longMode(g, n) or (lsub(g, n[1]) + g.lineLen > MaxLineLen):
incl(c.flags, rfLongMode) incl(c.flags, rfLongMode)
gcoms(g) gcoms(g)