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/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { assertIndexInRange } from '../util/assert'; import { bindingUpdated, bindingUpdated2, bindingUpdated3, bindingUpdated4, getBinding, updateBinding, } from './bindings'; import { getBindingRoot, getLView } from './state'; import { NO_CHANGE } from './tokens'; /** * Bindings for pure functions are stored after regular bindings. * * |-------decls------|---------vars---------| |----- hostVars (dir1) ------| * ------------------------------------------------------------------------------------------ * | nodes/refs/pipes | bindings | fn slots | injector | dir1 | host bindings | host slots | * ------------------------------------------------------------------------------------------ * ^ ^ * TView.bindingStartIndex TView.expandoStartIndex * * Pure function instructions are given an offset from the binding root. Adding the offset to the * binding root gives the first index where the bindings are stored. In component views, the binding * root is the bindingStartIndex. In host bindings, the binding root is the expandoStartIndex + * any directive instances + any hostVars in directives evaluated before it. * * See VIEW_DATA.md for more information about host binding resolution. */ /** * If the value hasn't been saved, calls the pure function to store and return the * value. If it has been saved, returns the saved value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn Function that returns a value * @param thisArg Optional calling context of pureFn * @returns value * * @codeGenApi */ export function ɵɵpureFunction0(slotOffset, pureFn, thisArg) { const bindingIndex = getBindingRoot() + slotOffset; const lView = getLView(); return lView[bindingIndex] === NO_CHANGE ? updateBinding(lView, bindingIndex, thisArg ? pureFn.call(thisArg) : pureFn()) : getBinding(lView, bindingIndex); } /** * If the value of the provided exp has changed, calls the pure function to return * an updated value. Or if the value has not changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn Function that returns an updated value * @param exp Updated expression value * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction1(slotOffset, pureFn, exp, thisArg) { return pureFunction1Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp, thisArg); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction2(slotOffset, pureFn, exp1, exp2, thisArg) { return pureFunction2Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, thisArg); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction3(slotOffset, pureFn, exp1, exp2, exp3, thisArg) { return pureFunction3Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, exp3, thisArg); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param exp4 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction4(slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg) { return pureFunction4Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param exp4 * @param exp5 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction5(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, thisArg) { const bindingIndex = getBindingRoot() + slotOffset; const lView = getLView(); const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4); return bindingUpdated(lView, bindingIndex + 4, exp5) || different ? updateBinding(lView, bindingIndex + 5, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5) : pureFn(exp1, exp2, exp3, exp4, exp5)) : getBinding(lView, bindingIndex + 5); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param exp4 * @param exp5 * @param exp6 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction6(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, thisArg) { const bindingIndex = getBindingRoot() + slotOffset; const lView = getLView(); const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4); return bindingUpdated2(lView, bindingIndex + 4, exp5, exp6) || different ? updateBinding(lView, bindingIndex + 6, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6) : pureFn(exp1, exp2, exp3, exp4, exp5, exp6)) : getBinding(lView, bindingIndex + 6); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param exp4 * @param exp5 * @param exp6 * @param exp7 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction7(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, exp7, thisArg) { const bindingIndex = getBindingRoot() + slotOffset; const lView = getLView(); let different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4); return bindingUpdated3(lView, bindingIndex + 4, exp5, exp6, exp7) || different ? updateBinding(lView, bindingIndex + 7, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7) : pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7)) : getBinding(lView, bindingIndex + 7); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param exp4 * @param exp5 * @param exp6 * @param exp7 * @param exp8 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunction8(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8, thisArg) { const bindingIndex = getBindingRoot() + slotOffset; const lView = getLView(); const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4); return bindingUpdated4(lView, bindingIndex + 4, exp5, exp6, exp7, exp8) || different ? updateBinding(lView, bindingIndex + 8, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8) : pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8)) : getBinding(lView, bindingIndex + 8); } /** * pureFunction instruction that can support any number of bindings. * * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param slotOffset the offset from binding root to the reserved slot * @param pureFn A pure function that takes binding values and builds an object or array * containing those values. * @param exps An array of binding values * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * * @codeGenApi */ export function ɵɵpureFunctionV(slotOffset, pureFn, exps, thisArg) { return pureFunctionVInternal(getLView(), getBindingRoot(), slotOffset, pureFn, exps, thisArg); } /** * Results of a pure function invocation are stored in LView in a dedicated slot that is initialized * to NO_CHANGE. In rare situations a pure pipe might throw an exception on the very first * invocation and not produce any valid results. In this case LView would keep holding the NO_CHANGE * value. The NO_CHANGE is not something that we can use in expressions / bindings thus we convert * it to `undefined`. */ function getPureFunctionReturnValue(lView, returnValueIndex) { ngDevMode && assertIndexInRange(lView, returnValueIndex); const lastReturnValue = lView[returnValueIndex]; return lastReturnValue === NO_CHANGE ? undefined : lastReturnValue; } /** * If the value of the provided exp has changed, calls the pure function to return * an updated value. Or if the value has not changed, returns cached value. * * @param lView LView in which the function is being executed. * @param bindingRoot Binding root index. * @param slotOffset the offset from binding root to the reserved slot * @param pureFn Function that returns an updated value * @param exp Updated expression value * @param thisArg Optional calling context of pureFn * @returns Updated or cached value */ export function pureFunction1Internal(lView, bindingRoot, slotOffset, pureFn, exp, thisArg) { const bindingIndex = bindingRoot + slotOffset; return bindingUpdated(lView, bindingIndex, exp) ? updateBinding(lView, bindingIndex + 1, thisArg ? pureFn.call(thisArg, exp) : pureFn(exp)) : getPureFunctionReturnValue(lView, bindingIndex + 1); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param lView LView in which the function is being executed. * @param bindingRoot Binding root index. * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value */ export function pureFunction2Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, thisArg) { const bindingIndex = bindingRoot + slotOffset; return bindingUpdated2(lView, bindingIndex, exp1, exp2) ? updateBinding(lView, bindingIndex + 2, thisArg ? pureFn.call(thisArg, exp1, exp2) : pureFn(exp1, exp2)) : getPureFunctionReturnValue(lView, bindingIndex + 2); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param lView LView in which the function is being executed. * @param bindingRoot Binding root index. * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value */ export function pureFunction3Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, exp3, thisArg) { const bindingIndex = bindingRoot + slotOffset; return bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3) ? updateBinding(lView, bindingIndex + 3, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3) : pureFn(exp1, exp2, exp3)) : getPureFunctionReturnValue(lView, bindingIndex + 3); } /** * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param lView LView in which the function is being executed. * @param bindingRoot Binding root index. * @param slotOffset the offset from binding root to the reserved slot * @param pureFn * @param exp1 * @param exp2 * @param exp3 * @param exp4 * @param thisArg Optional calling context of pureFn * @returns Updated or cached value * */ export function pureFunction4Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg) { const bindingIndex = bindingRoot + slotOffset; return bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4) ? updateBinding(lView, bindingIndex + 4, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4) : pureFn(exp1, exp2, exp3, exp4)) : getPureFunctionReturnValue(lView, bindingIndex + 4); } /** * pureFunction instruction that can support any number of bindings. * * If the value of any provided exp has changed, calls the pure function to return * an updated value. Or if no values have changed, returns cached value. * * @param lView LView in which the function is being executed. * @param bindingRoot Binding root index. * @param slotOffset the offset from binding root to the reserved slot * @param pureFn A pure function that takes binding values and builds an object or array * containing those values. * @param exps An array of binding values * @param thisArg Optional calling context of pureFn * @returns Updated or cached value */ export function pureFunctionVInternal(lView, bindingRoot, slotOffset, pureFn, exps, thisArg) { let bindingIndex = bindingRoot + slotOffset; let different = false; for (let i = 0; i < exps.length; i++) { bindingUpdated(lView, bindingIndex++, exps[i]) && (different = true); } return different ? updateBinding(lView, bindingIndex, pureFn.apply(thisArg, exps)) : getPureFunctionReturnValue(lView, bindingIndex); } //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {assertIndexInRange} from '../util/assert';\nimport {\n  bindingUpdated,\n  bindingUpdated2,\n  bindingUpdated3,\n  bindingUpdated4,\n  getBinding,\n  updateBinding,\n} from './bindings';\nimport {LView} from './interfaces/view';\nimport {getBindingRoot, getLView} from './state';\nimport {NO_CHANGE} from './tokens';\n\n/**\n * Bindings for pure functions are stored after regular bindings.\n *\n * |-------decls------|---------vars---------|                 |----- hostVars (dir1) ------|\n * ------------------------------------------------------------------------------------------\n * | nodes/refs/pipes | bindings | fn slots  | injector | dir1 | host bindings | host slots |\n * ------------------------------------------------------------------------------------------\n *                    ^                      ^\n *      TView.bindingStartIndex      TView.expandoStartIndex\n *\n * Pure function instructions are given an offset from the binding root. Adding the offset to the\n * binding root gives the first index where the bindings are stored. In component views, the binding\n * root is the bindingStartIndex. In host bindings, the binding root is the expandoStartIndex +\n * any directive instances + any hostVars in directives evaluated before it.\n *\n * See VIEW_DATA.md for more information about host binding resolution.\n */\n\n/**\n * If the value hasn't been saved, calls the pure function to store and return the\n * value. If it has been saved, returns the saved value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns a value\n * @param thisArg Optional calling context of pureFn\n * @returns value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction0<T>(slotOffset: number, pureFn: () => T, thisArg?: any): T {\n  const bindingIndex = getBindingRoot() + slotOffset;\n  const lView = getLView();\n  return lView[bindingIndex] === NO_CHANGE\n    ? updateBinding(lView, bindingIndex, thisArg ? pureFn.call(thisArg) : pureFn())\n    : getBinding(lView, bindingIndex);\n}\n\n/**\n * If the value of the provided exp has changed, calls the pure function to return\n * an updated value. Or if the value has not changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns an updated value\n * @param exp Updated expression value\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction1(\n  slotOffset: number,\n  pureFn: (v: any) => any,\n  exp: any,\n  thisArg?: any,\n): any {\n  return pureFunction1Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp, thisArg);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction2(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any) => any,\n  exp1: any,\n  exp2: any,\n  thisArg?: any,\n): any {\n  return pureFunction2Internal(\n    getLView(),\n    getBindingRoot(),\n    slotOffset,\n    pureFn,\n    exp1,\n    exp2,\n    thisArg,\n  );\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction3(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  thisArg?: any,\n): any {\n  return pureFunction3Internal(\n    getLView(),\n    getBindingRoot(),\n    slotOffset,\n    pureFn,\n    exp1,\n    exp2,\n    exp3,\n    thisArg,\n  );\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction4(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any, v4: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  exp4: any,\n  thisArg?: any,\n): any {\n  return pureFunction4Internal(\n    getLView(),\n    getBindingRoot(),\n    slotOffset,\n    pureFn,\n    exp1,\n    exp2,\n    exp3,\n    exp4,\n    thisArg,\n  );\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction5(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  exp4: any,\n  exp5: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = getBindingRoot() + slotOffset;\n  const lView = getLView();\n  const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated(lView, bindingIndex + 4, exp5) || different\n    ? updateBinding(\n        lView,\n        bindingIndex + 5,\n        thisArg\n          ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5)\n          : pureFn(exp1, exp2, exp3, exp4, exp5),\n      )\n    : getBinding(lView, bindingIndex + 5);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction6(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any, v6: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  exp4: any,\n  exp5: any,\n  exp6: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = getBindingRoot() + slotOffset;\n  const lView = getLView();\n  const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated2(lView, bindingIndex + 4, exp5, exp6) || different\n    ? updateBinding(\n        lView,\n        bindingIndex + 6,\n        thisArg\n          ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6)\n          : pureFn(exp1, exp2, exp3, exp4, exp5, exp6),\n      )\n    : getBinding(lView, bindingIndex + 6);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param exp7\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction7(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any, v6: any, v7: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  exp4: any,\n  exp5: any,\n  exp6: any,\n  exp7: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = getBindingRoot() + slotOffset;\n  const lView = getLView();\n  let different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated3(lView, bindingIndex + 4, exp5, exp6, exp7) || different\n    ? updateBinding(\n        lView,\n        bindingIndex + 7,\n        thisArg\n          ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7)\n          : pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7),\n      )\n    : getBinding(lView, bindingIndex + 7);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param exp7\n * @param exp8\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunction8(\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any, v6: any, v7: any, v8: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  exp4: any,\n  exp5: any,\n  exp6: any,\n  exp7: any,\n  exp8: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = getBindingRoot() + slotOffset;\n  const lView = getLView();\n  const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated4(lView, bindingIndex + 4, exp5, exp6, exp7, exp8) || different\n    ? updateBinding(\n        lView,\n        bindingIndex + 8,\n        thisArg\n          ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8)\n          : pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8),\n      )\n    : getBinding(lView, bindingIndex + 8);\n}\n\n/**\n * pureFunction instruction that can support any number of bindings.\n *\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn A pure function that takes binding values and builds an object or array\n * containing those values.\n * @param exps An array of binding values\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nexport function ɵɵpureFunctionV(\n  slotOffset: number,\n  pureFn: (...v: any[]) => any,\n  exps: any[],\n  thisArg?: any,\n): any {\n  return pureFunctionVInternal(getLView(), getBindingRoot(), slotOffset, pureFn, exps, thisArg);\n}\n\n/**\n * Results of a pure function invocation are stored in LView in a dedicated slot that is initialized\n * to NO_CHANGE. In rare situations a pure pipe might throw an exception on the very first\n * invocation and not produce any valid results. In this case LView would keep holding the NO_CHANGE\n * value. The NO_CHANGE is not something that we can use in expressions / bindings thus we convert\n * it to `undefined`.\n */\nfunction getPureFunctionReturnValue(lView: LView, returnValueIndex: number) {\n  ngDevMode && assertIndexInRange(lView, returnValueIndex);\n  const lastReturnValue = lView[returnValueIndex];\n  return lastReturnValue === NO_CHANGE ? undefined : lastReturnValue;\n}\n\n/**\n * If the value of the provided exp has changed, calls the pure function to return\n * an updated value. Or if the value has not changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns an updated value\n * @param exp Updated expression value\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nexport function pureFunction1Internal(\n  lView: LView,\n  bindingRoot: number,\n  slotOffset: number,\n  pureFn: (v: any) => any,\n  exp: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated(lView, bindingIndex, exp)\n    ? updateBinding(lView, bindingIndex + 1, thisArg ? pureFn.call(thisArg, exp) : pureFn(exp))\n    : getPureFunctionReturnValue(lView, bindingIndex + 1);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nexport function pureFunction2Internal(\n  lView: LView,\n  bindingRoot: number,\n  slotOffset: number,\n  pureFn: (v1: any, v2: any) => any,\n  exp1: any,\n  exp2: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated2(lView, bindingIndex, exp1, exp2)\n    ? updateBinding(\n        lView,\n        bindingIndex + 2,\n        thisArg ? pureFn.call(thisArg, exp1, exp2) : pureFn(exp1, exp2),\n      )\n    : getPureFunctionReturnValue(lView, bindingIndex + 2);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nexport function pureFunction3Internal(\n  lView: LView,\n  bindingRoot: number,\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3)\n    ? updateBinding(\n        lView,\n        bindingIndex + 3,\n        thisArg ? pureFn.call(thisArg, exp1, exp2, exp3) : pureFn(exp1, exp2, exp3),\n      )\n    : getPureFunctionReturnValue(lView, bindingIndex + 3);\n}\n\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n */\nexport function pureFunction4Internal(\n  lView: LView,\n  bindingRoot: number,\n  slotOffset: number,\n  pureFn: (v1: any, v2: any, v3: any, v4: any) => any,\n  exp1: any,\n  exp2: any,\n  exp3: any,\n  exp4: any,\n  thisArg?: any,\n): any {\n  const bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4)\n    ? updateBinding(\n        lView,\n        bindingIndex + 4,\n        thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4) : pureFn(exp1, exp2, exp3, exp4),\n      )\n    : getPureFunctionReturnValue(lView, bindingIndex + 4);\n}\n\n/**\n * pureFunction instruction that can support any number of bindings.\n *\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn A pure function that takes binding values and builds an object or array\n * containing those values.\n * @param exps An array of binding values\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nexport function pureFunctionVInternal(\n  lView: LView,\n  bindingRoot: number,\n  slotOffset: number,\n  pureFn: (...v: any[]) => any,\n  exps: any[],\n  thisArg?: any,\n): any {\n  let bindingIndex = bindingRoot + slotOffset;\n  let different = false;\n  for (let i = 0; i < exps.length; i++) {\n    bindingUpdated(lView, bindingIndex++, exps[i]) && (different = true);\n  }\n  return different\n    ? updateBinding(lView, bindingIndex, pureFn.apply(thisArg, exps))\n    : getPureFunctionReturnValue(lView, bindingIndex);\n}\n"]}