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added support for a --define:karaxDebug switch

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This commit is contained in:
Andreas Rumpf 2017-08-08 13:29:29 +02:00
commit bb846644b5
1 changed files with 14 additions and 0 deletions
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14
src/karax.nim
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@ -463,24 +463,38 @@ proc applyComponents(kxi: KaraxInstance) =
while i < kxi.components.len: while i < kxi.components.len:
let x = kxi.components[i].oldNode let x = kxi.components[i].oldNode
let newNode = kxi.components[i].newNode let newNode = kxi.components[i].newNode
when defined(karaxDebug):
echo "Processing component ", newNode.text, " changed impl set ", x.changedImpl != nil
if x.changedImpl != nil and x.changedImpl(x, newNode): if x.changedImpl != nil and x.changedImpl(x, newNode):
when defined(karaxDebug):
echo "Component ", newNode.text, " did change"
let current = kxi.components[i].current let current = kxi.components[i].current
let parent = kxi.components[i].parent let parent = kxi.components[i].parent
x.updatedImpl(x, newNode) x.updatedImpl(x, newNode)
let oldExpanded = x.expanded let oldExpanded = x.expanded
x.expanded = x.renderImpl(x) x.expanded = x.renderImpl(x)
when defined(karaxDebug):
echo "Component ", newNode.text, " re-rendered"
x.renderedVersion = x.version x.renderedVersion = x.version
if oldExpanded == nil: if oldExpanded == nil:
detach(x) detach(x)
kxi.addPatch(pkReplace, parent, current, x.expanded) kxi.addPatch(pkReplace, parent, current, x.expanded)
when defined(karaxDebug):
echo "Component ", newNode.text, ": old expansion didn't exist"
else: else:
let res = diff(x.expanded, oldExpanded, parent, current, kxi) let res = diff(x.expanded, oldExpanded, parent, current, kxi)
if res == usenewNode: if res == usenewNode:
when defined(karaxDebug):
echo "Component ", newNode.text, ": re-render triggered a DOM change (case A)"
discard "diff created a patchset for us, so this is fine" discard "diff created a patchset for us, so this is fine"
elif res != different: elif res != different:
when defined(karaxDebug):
echo "Component ", newNode.text, ": re-render triggered no DOM change whatsoever"
x.expanded = oldExpanded x.expanded = oldExpanded
assert oldExpanded.dom != nil, "old expanded.dom is nil" assert oldExpanded.dom != nil, "old expanded.dom is nil"
else: else:
when defined(karaxDebug):
echo "Component ", newNode.text, ": re-render triggered a DOM change (case B)"
assert x.expanded.dom != nil, "expanded.dom is nil" assert x.expanded.dom != nil, "expanded.dom is nil"
inc i inc i
setLen(kxi.components, 0) setLen(kxi.components, 0)