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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 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | 2x 2x 2x 2x 7516x 7516x 7516x 7516x 7516x 7516x 7428x 7428x 7516x 7516x 2x 2x 2x 2x 2x 2x 2x 2x 275x 275x 275x 275x 275x 272x 255x 439x 372x 372x 439x 439x 439x 439x 439x 439x 439x 372x 372x 439x 439x 424x 424x 438x 439x 255x 255x 255x 275x 16x 16x 255x 255x | import type { ComponentInternalInstance } from './component' import { devtoolsComponentUpdated } from './devtools' import { setBlockTracking } from './vnode' /** * mark the current rendering instance for asset resolution (e.g. * resolveComponent, resolveDirective) during render */ export let currentRenderingInstance: ComponentInternalInstance | null = null export let currentScopeId: string | null = null /** * Note: rendering calls maybe nested. The function returns the parent rendering * instance if present, which should be restored after the render is done: * * ```js * const prev = setCurrentRenderingInstance(i) * // ...render * setCurrentRenderingInstance(prev) * ``` */ export function setCurrentRenderingInstance( instance: ComponentInternalInstance | null, ): ComponentInternalInstance | null { const prev = currentRenderingInstance currentRenderingInstance = instance currentScopeId = (instance && instance.type.__scopeId) || null // v2 pre-compiled components uses _scopeId instead of __scopeId if (__COMPAT__ && !currentScopeId) { currentScopeId = (instance && (instance.type as any)._scopeId) || null } return prev } /** * Set scope id when creating hoisted vnodes. * @private compiler helper */ export function pushScopeId(id: string | null): void { currentScopeId = id } /** * Technically we no longer need this after 3.0.8 but we need to keep the same * API for backwards compat w/ code generated by compilers. * @private */ export function popScopeId(): void { currentScopeId = null } /** * Only for backwards compat * @private */ export const withScopeId = (_id: string): typeof withCtx => withCtx export type ContextualRenderFn = { (...args: any[]): any _n: boolean /* already normalized */ _c: boolean /* compiled */ _d: boolean /* disableTracking */ _ns: boolean /* nonScoped */ } /** * Wrap a slot function to memoize current rendering instance * @private compiler helper */ export function withCtx( fn: Function, ctx: ComponentInternalInstance | null = currentRenderingInstance, isNonScopedSlot?: boolean, // __COMPAT__ only ): Function { if (!ctx) return fn // already normalized if ((fn as ContextualRenderFn)._n) { return fn } const renderFnWithContext: ContextualRenderFn = (...args: any[]) => { // If a user calls a compiled slot inside a template expression (#1745), it // can mess up block tracking, so by default we disable block tracking and // force bail out when invoking a compiled slot (indicated by the ._d flag). // This isn't necessary if rendering a compiled `<slot>`, so we flip the // ._d flag off when invoking the wrapped fn inside `renderSlot`. if (renderFnWithContext._d) { setBlockTracking(-1) } const prevInstance = setCurrentRenderingInstance(ctx) let res try { res = fn(...args) } finally { setCurrentRenderingInstance(prevInstance) if (renderFnWithContext._d) { setBlockTracking(1) } } if (__DEV__ || __FEATURE_PROD_DEVTOOLS__) { devtoolsComponentUpdated(ctx) } return res } // mark normalized to avoid duplicated wrapping renderFnWithContext._n = true // mark this as compiled by default // this is used in vnode.ts -> normalizeChildren() to set the slot // rendering flag. renderFnWithContext._c = true // disable block tracking by default renderFnWithContext._d = true // compat build only flag to distinguish scoped slots from non-scoped ones if (__COMPAT__ && isNonScopedSlot) { renderFnWithContext._ns = true } return renderFnWithContext } |