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fix(runtime-core): exit the optimization mode when the user manually renders the compiled slot #3573

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fix(runtime-core): exit the optimization mode when the user manually renders the compiled slot #3573

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032e259
fix(runtime-core): exit the optimization mode when the user manually …
HcySunYang Apr 9, 2021
44624b3
fix: null value detection
HcySunYang Apr 9, 2021
b740134
fix: recursively bailout
HcySunYang Apr 9, 2021
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22 changes: 20 additions & 2 deletions packages/runtime-core/src/componentRenderContext.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import { ShapeFlags } from 'packages/shared/src/shapeFlags'
import { ComponentInternalInstance } from './component'
import { isRenderingCompiledSlot } from './helpers/renderSlot'
import { closeBlock, openBlock } from './vnode'
import { closeBlock, openBlock, VNode } from './vnode'

/**
* mark the current rendering instance for asset resolution (e.g.
Expand Down Expand Up @@ -68,11 +69,15 @@ export function withCtx(
openBlock(true /* null block that disables tracking */)
}
const prevInstance = setCurrentRenderingInstance(ctx)
const res = fn(...args)
const res: VNode[] = fn(...args)
setCurrentRenderingInstance(prevInstance)
if (!isRenderingCompiledSlot) {
closeBlock()
}
// #3569
if (!isRenderingCompiledSlot && res) {
forceBailout(res)
}
return res
}
// mark this as a compiled slot function.
Expand All @@ -81,3 +86,16 @@ export function withCtx(
renderFnWithContext._c = true
return renderFnWithContext
}

function forceBailout(vnodes: VNode[]) {
vnodes.forEach(vnode => {
// when the user manually renders the compiled slot,
// it will be able to easily break the optimization update mode,
// so here we force to exit the optimization mode
vnode.dynamicChildren = null
vnode.patchFlag = 0
if (vnode.shapeFlag & ShapeFlags.ARRAY_CHILDREN) {
forceBailout(vnode.children as VNode[])
}
})
}