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optimized VDOM implementation for uibench

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This commit is contained in:
Andreas Rumpf 2017-05-01 09:58:10 +02:00
commit d3e1d28c89
1 changed files with 35 additions and 29 deletions
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8
src/vdom.nim
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@ -106,6 +106,7 @@ type
# even index: key, odd index: value; done this way for memory efficiency: # even index: key, odd index: value; done this way for memory efficiency:
attrs: seq[cstring] attrs: seq[cstring]
events*: seq[(EventKind, EventHandler)] events*: seq[(EventKind, EventHandler)]
when false:
hash*: Hash hash*: Hash
validHash*: bool validHash*: bool
dom*: Node ## the attached real DOM node. Can be 'nil' if the virtual node dom*: Node ## the attached real DOM node. Can be 'nil' if the virtual node
@ -146,6 +147,10 @@ proc eq*(a, b: VNode): bool =
proc setAttr*(n: VNode; key: cstring; val: cstring = "") = proc setAttr*(n: VNode; key: cstring; val: cstring = "") =
if n.attrs.isNil: if n.attrs.isNil:
when true:
let x = @[key, val]
shallowCopy n.attrs, x
else:
n.attrs = @[key, val] n.attrs = @[key, val]
else: else:
for i in countup(0, n.attrs.len-2, 2): for i in countup(0, n.attrs.len-2, 2):
@ -216,7 +221,8 @@ proc toString*(n: VNode; result: var string; indent: int) =
for i in 1..indent: result.add ' ' for i in 1..indent: result.add ' '
result.add "\L</" & $n.kind & ">" result.add "\L</" & $n.kind & ">"
proc calcHash*(n: VNode) = when false:
proc calcHash*(n: VNode) =
if n.validHash: return if n.validHash: return
n.validHash = true n.validHash = true
var h: Hash = ord n.kind var h: Hash = ord n.kind