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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | 30x 30x 30x 30x 30x 4x 4x 4x 4x 4x 6x 6x 6x 30x 4x 4x 4x 4x 6x 6x 4x | import {
ComponentNode,
TransformContext,
buildSlots,
createFunctionExpression,
FunctionExpression,
TemplateChildNode,
createCallExpression,
SlotsExpression
} from '@vue/compiler-dom'
import {
SSRTransformContext,
processChildrenAsStatement
} from '../ssrCodegenTransform'
import { SSR_RENDER_SUSPENSE } from '../runtimeHelpers'
const wipMap = new WeakMap<ComponentNode, WIPEntry>()
interface WIPEntry {
slotsExp: SlotsExpression
wipSlots: Array<{
fn: FunctionExpression
children: TemplateChildNode[]
}>
}
// phase 1
export function ssrTransformSuspense(
node: ComponentNode,
context: TransformContext
) {
return () => {
if (node.children.length) {
const wipEntry: WIPEntry = {
slotsExp: null!, // to be immediately set
wipSlots: []
}
wipMap.set(node, wipEntry)
wipEntry.slotsExp = buildSlots(node, context, (_props, children, loc) => {
const fn = createFunctionExpression(
[],
undefined, // no return, assign body later
true, // newline
false, // suspense slots are not treated as normal slots
loc
)
wipEntry.wipSlots.push({
fn,
children
})
return fn
}).slots
}
}
}
// phase 2
export function ssrProcessSuspense(
node: ComponentNode,
context: SSRTransformContext
) {
// complete wip slots with ssr code
const wipEntry = wipMap.get(node)
Iif (!wipEntry) {
return
}
const { slotsExp, wipSlots } = wipEntry
for (let i = 0; i < wipSlots.length; i++) {
const { fn, children } = wipSlots[i]
fn.body = processChildrenAsStatement(children, context)
}
// _push(ssrRenderSuspense(slots))
context.pushStatement(
createCallExpression(context.helper(SSR_RENDER_SUSPENSE), [
`_push`,
slotsExp
])
)
}
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