/** * @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 { RuntimeError } from '../../errors'; import { getPluralCase } from '../../i18n/localization'; import { assertDefined, assertDomNode, assertEqual, assertGreaterThan, assertIndexInRange, throwError } from '../../util/assert'; import { assertIndexInExpandoRange, assertTIcu } from '../assert'; import { attachPatchData } from '../context_discovery'; import { elementPropertyInternal, setElementAttribute } from '../instructions/shared'; import { ELEMENT_MARKER, I18nCreateOpCode, ICU_MARKER } from '../interfaces/i18n'; import { HEADER_OFFSET, RENDERER } from '../interfaces/view'; import { createCommentNode, createElementNode, createTextNode, nativeInsertBefore, nativeParentNode, nativeRemoveNode, updateTextNode } from '../node_manipulation'; import { getBindingIndex } from '../state'; import { renderStringify } from '../util/stringify_utils'; import { getNativeByIndex, unwrapRNode } from '../util/view_utils'; import { getLocaleId } from './i18n_locale_id'; import { getCurrentICUCaseIndex, getParentFromIcuCreateOpCode, getRefFromIcuCreateOpCode, getTIcu } from './i18n_util'; /** * Keep track of which input bindings in `ɵɵi18nExp` have changed. * * This is used to efficiently update expressions in i18n only when the corresponding input has * changed. * * 1) Each bit represents which of the `ɵɵi18nExp` has changed. * 2) There are 32 bits allowed in JS. * 3) Bit 32 is special as it is shared for all changes past 32. (In other words if you have more * than 32 `ɵɵi18nExp` then all changes past 32nd `ɵɵi18nExp` will be mapped to same bit. This means * that we may end up changing more than we need to. But i18n expressions with 32 bindings is rare * so in practice it should not be an issue.) */ let changeMask = 0b0; /** * Keeps track of which bit needs to be updated in `changeMask` * * This value gets incremented on every call to `ɵɵi18nExp` */ let changeMaskCounter = 0; /** * Keep track of which input bindings in `ɵɵi18nExp` have changed. * * `setMaskBit` gets invoked by each call to `ɵɵi18nExp`. * * @param hasChange did `ɵɵi18nExp` detect a change. */ export function setMaskBit(hasChange) { if (hasChange) { changeMask = changeMask | (1 << Math.min(changeMaskCounter, 31)); } changeMaskCounter++; } export function applyI18n(tView, lView, index) { if (changeMaskCounter > 0) { ngDevMode && assertDefined(tView, `tView should be defined`); const tI18n = tView.data[index]; // When `index` points to an `ɵɵi18nAttributes` then we have an array otherwise `TI18n` const updateOpCodes = Array.isArray(tI18n) ? tI18n : tI18n.update; const bindingsStartIndex = getBindingIndex() - changeMaskCounter - 1; applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask); } // Reset changeMask & maskBit to default for the next update cycle changeMask = 0b0; changeMaskCounter = 0; } /** * Apply `I18nCreateOpCodes` op-codes as stored in `TI18n.create`. * * Creates text (and comment) nodes which are internationalized. * * @param lView Current lView * @param createOpCodes Set of op-codes to apply * @param parentRNode Parent node (so that direct children can be added eagerly) or `null` if it is * a root node. * @param insertInFrontOf DOM node that should be used as an anchor. */ export function applyCreateOpCodes(lView, createOpCodes, parentRNode, insertInFrontOf) { const renderer = lView[RENDERER]; for (let i = 0; i < createOpCodes.length; i++) { const opCode = createOpCodes[i++]; const text = createOpCodes[i]; const isComment = (opCode & I18nCreateOpCode.COMMENT) === I18nCreateOpCode.COMMENT; const appendNow = (opCode & I18nCreateOpCode.APPEND_EAGERLY) === I18nCreateOpCode.APPEND_EAGERLY; const index = opCode >>> I18nCreateOpCode.SHIFT; let rNode = lView[index]; if (rNode === null) { // We only create new DOM nodes if they don't already exist: If ICU switches case back to a // case which was already instantiated, no need to create new DOM nodes. rNode = lView[index] = isComment ? renderer.createComment(text) : createTextNode(renderer, text); } if (appendNow && parentRNode !== null) { nativeInsertBefore(renderer, parentRNode, rNode, insertInFrontOf, false); } } } /** * Apply `I18nMutateOpCodes` OpCodes. * * @param tView Current `TView` * @param mutableOpCodes Mutable OpCodes to process * @param lView Current `LView` * @param anchorRNode place where the i18n node should be inserted. */ export function applyMutableOpCodes(tView, mutableOpCodes, lView, anchorRNode) { ngDevMode && assertDomNode(anchorRNode); const renderer = lView[RENDERER]; // `rootIdx` represents the node into which all inserts happen. let rootIdx = null; // `rootRNode` represents the real node into which we insert. This can be different from // `lView[rootIdx]` if we have projection. // - null we don't have a parent (as can be the case in when we are inserting into a root of // LView which has no parent.) // - `RElement` The element representing the root after taking projection into account. let rootRNode; for (let i = 0; i < mutableOpCodes.length; i++) { const opCode = mutableOpCodes[i]; if (typeof opCode == 'string') { const textNodeIndex = mutableOpCodes[++i]; if (lView[textNodeIndex] === null) { ngDevMode && ngDevMode.rendererCreateTextNode++; ngDevMode && assertIndexInRange(lView, textNodeIndex); lView[textNodeIndex] = createTextNode(renderer, opCode); } } else if (typeof opCode == 'number') { switch (opCode & 1 /* IcuCreateOpCode.MASK_INSTRUCTION */) { case 0 /* IcuCreateOpCode.AppendChild */: const parentIdx = getParentFromIcuCreateOpCode(opCode); if (rootIdx === null) { // The first operation should save the `rootIdx` because the first operation // must insert into the root. (Only subsequent operations can insert into a dynamic // parent) rootIdx = parentIdx; rootRNode = nativeParentNode(renderer, anchorRNode); } let insertInFrontOf; let parentRNode; if (parentIdx === rootIdx) { insertInFrontOf = anchorRNode; parentRNode = rootRNode; } else { insertInFrontOf = null; parentRNode = unwrapRNode(lView[parentIdx]); } // FIXME(misko): Refactor with `processI18nText` if (parentRNode !== null) { // This can happen if the `LView` we are adding to is not attached to a parent `LView`. // In such a case there is no "root" we can attach to. This is fine, as we still need to // create the elements. When the `LView` gets later added to a parent these "root" nodes // get picked up and added. ngDevMode && assertDomNode(parentRNode); const refIdx = getRefFromIcuCreateOpCode(opCode); ngDevMode && assertGreaterThan(refIdx, HEADER_OFFSET, 'Missing ref'); // `unwrapRNode` is not needed here as all of these point to RNodes as part of the i18n // which can't have components. const child = lView[refIdx]; ngDevMode && assertDomNode(child); nativeInsertBefore(renderer, parentRNode, child, insertInFrontOf, false); const tIcu = getTIcu(tView, refIdx); if (tIcu !== null && typeof tIcu === 'object') { // If we just added a comment node which has ICU then that ICU may have already been // rendered and therefore we need to re-add it here. ngDevMode && assertTIcu(tIcu); const caseIndex = getCurrentICUCaseIndex(tIcu, lView); if (caseIndex !== null) { applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, lView[tIcu.anchorIdx]); } } } break; case 1 /* IcuCreateOpCode.Attr */: const elementNodeIndex = opCode >>> 1 /* IcuCreateOpCode.SHIFT_REF */; const attrName = mutableOpCodes[++i]; const attrValue = mutableOpCodes[++i]; // This code is used for ICU expressions only, since we don't support // directives/components in ICUs, we don't need to worry about inputs here setElementAttribute(renderer, getNativeByIndex(elementNodeIndex, lView), null, null, attrName, attrValue, null); break; default: if (ngDevMode) { throw new RuntimeError(700 /* RuntimeErrorCode.INVALID_I18N_STRUCTURE */, `Unable to determine the type of mutate operation for "${opCode}"`); } } } else { switch (opCode) { case ICU_MARKER: const commentValue = mutableOpCodes[++i]; const commentNodeIndex = mutableOpCodes[++i]; if (lView[commentNodeIndex] === null) { ngDevMode && assertEqual(typeof commentValue, 'string', `Expected "${commentValue}" to be a comment node value`); ngDevMode && ngDevMode.rendererCreateComment++; ngDevMode && assertIndexInExpandoRange(lView, commentNodeIndex); const commentRNode = lView[commentNodeIndex] = createCommentNode(renderer, commentValue); // FIXME(misko): Attaching patch data is only needed for the root (Also add tests) attachPatchData(commentRNode, lView); } break; case ELEMENT_MARKER: const tagName = mutableOpCodes[++i]; const elementNodeIndex = mutableOpCodes[++i]; if (lView[elementNodeIndex] === null) { ngDevMode && assertEqual(typeof tagName, 'string', `Expected "${tagName}" to be an element node tag name`); ngDevMode && ngDevMode.rendererCreateElement++; ngDevMode && assertIndexInExpandoRange(lView, elementNodeIndex); const elementRNode = lView[elementNodeIndex] = createElementNode(renderer, tagName, null); // FIXME(misko): Attaching patch data is only needed for the root (Also add tests) attachPatchData(elementRNode, lView); } break; default: ngDevMode && throwError(`Unable to determine the type of mutate operation for "${opCode}"`); } } } } /** * Apply `I18nUpdateOpCodes` OpCodes * * @param tView Current `TView` * @param lView Current `LView` * @param updateOpCodes OpCodes to process * @param bindingsStartIndex Location of the first `ɵɵi18nApply` * @param changeMask Each bit corresponds to a `ɵɵi18nExp` (Counting backwards from * `bindingsStartIndex`) */ export function applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask) { for (let i = 0; i < updateOpCodes.length; i++) { // bit code to check if we should apply the next update const checkBit = updateOpCodes[i]; // Number of opCodes to skip until next set of update codes const skipCodes = updateOpCodes[++i]; if (checkBit & changeMask) { // The value has been updated since last checked let value = ''; for (let j = i + 1; j <= (i + skipCodes); j++) { const opCode = updateOpCodes[j]; if (typeof opCode == 'string') { value += opCode; } else if (typeof opCode == 'number') { if (opCode < 0) { // Negative opCode represent `i18nExp` values offset. value += renderStringify(lView[bindingsStartIndex - opCode]); } else { const nodeIndex = (opCode >>> 2 /* I18nUpdateOpCode.SHIFT_REF */); switch (opCode & 3 /* I18nUpdateOpCode.MASK_OPCODE */) { case 1 /* I18nUpdateOpCode.Attr */: const propName = updateOpCodes[++j]; const sanitizeFn = updateOpCodes[++j]; const tNodeOrTagName = tView.data[nodeIndex]; ngDevMode && assertDefined(tNodeOrTagName, 'Experting TNode or string'); if (typeof tNodeOrTagName === 'string') { // IF we don't have a `TNode`, then we are an element in ICU (as ICU content does // not have TNode), in which case we know that there are no directives, and hence // we use attribute setting. setElementAttribute(lView[RENDERER], lView[nodeIndex], null, tNodeOrTagName, propName, value, sanitizeFn); } else { elementPropertyInternal(tView, tNodeOrTagName, lView, propName, value, lView[RENDERER], sanitizeFn, false); } break; case 0 /* I18nUpdateOpCode.Text */: const rText = lView[nodeIndex]; rText !== null && updateTextNode(lView[RENDERER], rText, value); break; case 2 /* I18nUpdateOpCode.IcuSwitch */: applyIcuSwitchCase(tView, getTIcu(tView, nodeIndex), lView, value); break; case 3 /* I18nUpdateOpCode.IcuUpdate */: applyIcuUpdateCase(tView, getTIcu(tView, nodeIndex), bindingsStartIndex, lView); break; } } } } } else { const opCode = updateOpCodes[i + 1]; if (opCode > 0 && (opCode & 3 /* I18nUpdateOpCode.MASK_OPCODE */) === 3 /* I18nUpdateOpCode.IcuUpdate */) { // Special case for the `icuUpdateCase`. It could be that the mask did not match, but // we still need to execute `icuUpdateCase` because the case has changed recently due to // previous `icuSwitchCase` instruction. (`icuSwitchCase` and `icuUpdateCase` always come in // pairs.) const nodeIndex = (opCode >>> 2 /* I18nUpdateOpCode.SHIFT_REF */); const tIcu = getTIcu(tView, nodeIndex); const currentIndex = lView[tIcu.currentCaseLViewIndex]; if (currentIndex < 0) { applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView); } } } i += skipCodes; } } /** * Apply OpCodes associated with updating an existing ICU. * * @param tView Current `TView` * @param tIcu Current `TIcu` * @param bindingsStartIndex Location of the first `ɵɵi18nApply` * @param lView Current `LView` */ function applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView) { ngDevMode && assertIndexInRange(lView, tIcu.currentCaseLViewIndex); let activeCaseIndex = lView[tIcu.currentCaseLViewIndex]; if (activeCaseIndex !== null) { let mask = changeMask; if (activeCaseIndex < 0) { // Clear the flag. // Negative number means that the ICU was freshly created and we need to force the update. activeCaseIndex = lView[tIcu.currentCaseLViewIndex] = ~activeCaseIndex; // -1 is same as all bits on, which simulates creation since it marks all bits dirty mask = -1; } applyUpdateOpCodes(tView, lView, tIcu.update[activeCaseIndex], bindingsStartIndex, mask); } } /** * Apply OpCodes associated with switching a case on ICU. * * This involves tearing down existing case and than building up a new case. * * @param tView Current `TView` * @param tIcu Current `TIcu` * @param lView Current `LView` * @param value Value of the case to update to. */ function applyIcuSwitchCase(tView, tIcu, lView, value) { // Rebuild a new case for this ICU const caseIndex = getCaseIndex(tIcu, value); let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView); if (activeCaseIndex !== caseIndex) { applyIcuSwitchCaseRemove(tView, tIcu, lView); lView[tIcu.currentCaseLViewIndex] = caseIndex === null ? null : ~caseIndex; if (caseIndex !== null) { // Add the nodes for the new case const anchorRNode = lView[tIcu.anchorIdx]; if (anchorRNode) { ngDevMode && assertDomNode(anchorRNode); applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, anchorRNode); } } } } /** * Apply OpCodes associated with tearing ICU case. * * This involves tearing down existing case and than building up a new case. * * @param tView Current `TView` * @param tIcu Current `TIcu` * @param lView Current `LView` */ function applyIcuSwitchCaseRemove(tView, tIcu, lView) { let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView); if (activeCaseIndex !== null) { const removeCodes = tIcu.remove[activeCaseIndex]; for (let i = 0; i < removeCodes.length; i++) { const nodeOrIcuIndex = removeCodes[i]; if (nodeOrIcuIndex > 0) { // Positive numbers are `RNode`s. const rNode = getNativeByIndex(nodeOrIcuIndex, lView); rNode !== null && nativeRemoveNode(lView[RENDERER], rNode); } else { // Negative numbers are ICUs applyIcuSwitchCaseRemove(tView, getTIcu(tView, ~nodeOrIcuIndex), lView); } } } } /** * Returns the index of the current case of an ICU expression depending on the main binding value * * @param icuExpression * @param bindingValue The value of the main binding used by this ICU expression */ function getCaseIndex(icuExpression, bindingValue) { let index = icuExpression.cases.indexOf(bindingValue); if (index === -1) { switch (icuExpression.type) { case 1 /* IcuType.plural */: { const resolvedCase = getPluralCase(bindingValue, getLocaleId()); index = icuExpression.cases.indexOf(resolvedCase); if (index === -1 && resolvedCase !== 'other') { index = icuExpression.cases.indexOf('other'); } break; } case 0 /* IcuType.select */: { index = icuExpression.cases.indexOf('other'); break; } } } return index === -1 ? null : index; } //# 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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 {RuntimeError, RuntimeErrorCode} from '../../errors';\nimport {getPluralCase} from '../../i18n/localization';\nimport {assertDefined, assertDomNode, assertEqual, assertGreaterThan, assertIndexInRange, throwError} from '../../util/assert';\nimport {assertIndexInExpandoRange, assertTIcu} from '../assert';\nimport {attachPatchData} from '../context_discovery';\nimport {elementPropertyInternal, setElementAttribute} from '../instructions/shared';\nimport {ELEMENT_MARKER, I18nCreateOpCode, I18nCreateOpCodes, I18nUpdateOpCode, I18nUpdateOpCodes, ICU_MARKER, IcuCreateOpCode, IcuCreateOpCodes, IcuType, TI18n, TIcu} from '../interfaces/i18n';\nimport {TNode} from '../interfaces/node';\nimport {RElement, RNode, RText} from '../interfaces/renderer_dom';\nimport {SanitizerFn} from 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(In other words if you have more\n * than 32 `ɵɵi18nExp` then all changes past 32nd `ɵɵi18nExp` will be mapped to same bit. This means\n * that we may end up changing more than we need to. But i18n expressions with 32 bindings is rare\n * so in practice it should not be an issue.)\n */\nlet changeMask = 0b0;\n\n/**\n * Keeps track of which bit needs to be updated in `changeMask`\n *\n * This value gets incremented on every call to `ɵɵi18nExp`\n */\nlet changeMaskCounter = 0;\n\n/**\n * Keep track of which input bindings in `ɵɵi18nExp` have changed.\n *\n * `setMaskBit` gets invoked by each call to `ɵɵi18nExp`.\n *\n * @param hasChange did `ɵɵi18nExp` detect a change.\n */\nexport function setMaskBit(hasChange: boolean) {\n  if (hasChange) {\n    changeMask = changeMask | (1 << Math.min(changeMaskCounter, 31));\n  }\n  changeMaskCounter++;\n}\n\nexport function applyI18n(tView: TView, lView: LView, index: number) {\n  if (changeMaskCounter > 0) {\n    ngDevMode && assertDefined(tView, `tView should be defined`);\n    const tI18n = tView.data[index] as TI18n | I18nUpdateOpCodes;\n    // When `index` points to an `ɵɵi18nAttributes` then we have an array otherwise `TI18n`\n    const updateOpCodes: I18nUpdateOpCodes =\n        Array.isArray(tI18n) ? tI18n as I18nUpdateOpCodes : (tI18n as TI18n).update;\n    const bindingsStartIndex = getBindingIndex() - changeMaskCounter - 1;\n    applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask);\n  }\n  // Reset changeMask & maskBit to default for the next update cycle\n  changeMask = 0b0;\n  changeMaskCounter = 0;\n}\n\n\n/**\n * Apply `I18nCreateOpCodes` op-codes as stored in `TI18n.create`.\n *\n * Creates text (and comment) nodes which are internationalized.\n *\n * @param lView Current lView\n * @param createOpCodes Set of op-codes to apply\n * @param parentRNode Parent node (so that direct children can be added eagerly) or `null` if it is\n *     a root node.\n * @param insertInFrontOf DOM node that should be used as an anchor.\n */\nexport function applyCreateOpCodes(\n    lView: LView, createOpCodes: I18nCreateOpCodes, parentRNode: RElement|null,\n    insertInFrontOf: RElement|null): void {\n  const renderer = lView[RENDERER];\n  for (let i = 0; i < createOpCodes.length; i++) {\n    const opCode = createOpCodes[i++] as any;\n    const text = createOpCodes[i] as string;\n    const isComment = (opCode & I18nCreateOpCode.COMMENT) === I18nCreateOpCode.COMMENT;\n    const appendNow =\n        (opCode & I18nCreateOpCode.APPEND_EAGERLY) === I18nCreateOpCode.APPEND_EAGERLY;\n    const index = opCode >>> I18nCreateOpCode.SHIFT;\n    let rNode = lView[index];\n    if (rNode === null) {\n      // We only create new DOM nodes if they don't already exist: If ICU switches case back to a\n      // case which was already instantiated, no need to create new DOM nodes.\n      rNode = lView[index] =\n          isComment ? renderer.createComment(text) : createTextNode(renderer, text);\n    }\n    if (appendNow && parentRNode !== null) {\n      nativeInsertBefore(renderer, parentRNode, rNode, insertInFrontOf, false);\n    }\n  }\n}\n\n/**\n * Apply `I18nMutateOpCodes` OpCodes.\n *\n * @param tView Current `TView`\n * @param mutableOpCodes Mutable OpCodes to process\n * @param lView Current `LView`\n * @param anchorRNode place where the i18n node should be inserted.\n */\nexport function applyMutableOpCodes(\n    tView: TView, mutableOpCodes: IcuCreateOpCodes, lView: LView, anchorRNode: RNode): void {\n  ngDevMode && assertDomNode(anchorRNode);\n  const renderer = lView[RENDERER];\n  // `rootIdx` represents the node into which all inserts happen.\n  let rootIdx: number|null = null;\n  // `rootRNode` represents the real node into which we insert. This can be different from\n  // `lView[rootIdx]` if we have projection.\n  //  - null we don't have a parent (as can be the case in when we are inserting into a root of\n  //    LView which has no parent.)\n  //  - `RElement` The element representing the root after taking projection into account.\n  let rootRNode!: RElement|null;\n  for (let i = 0; i < mutableOpCodes.length; i++) {\n    const opCode = mutableOpCodes[i];\n    if (typeof opCode == 'string') {\n      const textNodeIndex = mutableOpCodes[++i] as number;\n      if (lView[textNodeIndex] === null) {\n        ngDevMode && ngDevMode.rendererCreateTextNode++;\n        ngDevMode && assertIndexInRange(lView, textNodeIndex);\n        lView[textNodeIndex] = createTextNode(renderer, opCode);\n      }\n    } else if (typeof opCode == 'number') {\n      switch (opCode & IcuCreateOpCode.MASK_INSTRUCTION) {\n        case IcuCreateOpCode.AppendChild:\n          const parentIdx = getParentFromIcuCreateOpCode(opCode);\n          if (rootIdx === null) {\n            // The first operation should save the `rootIdx` because the first operation\n            // must insert into the root. (Only subsequent operations can insert into a dynamic\n            // parent)\n            rootIdx = parentIdx;\n            rootRNode = nativeParentNode(renderer, anchorRNode);\n          }\n          let insertInFrontOf: RNode|null;\n          let parentRNode: RElement|null;\n          if (parentIdx === rootIdx) {\n            insertInFrontOf = anchorRNode;\n            parentRNode = rootRNode;\n          } else {\n            insertInFrontOf = null;\n            parentRNode = unwrapRNode(lView[parentIdx]) as RElement;\n          }\n          // FIXME(misko): Refactor with `processI18nText`\n          if (parentRNode !== null) {\n            // This can happen if the `LView` we are adding to is not attached to a parent `LView`.\n            // In such a case there is no \"root\" we can attach to. This is fine, as we still need to\n            // create the elements. When the `LView` gets later added to a parent these \"root\" nodes\n            // get picked up and added.\n            ngDevMode && assertDomNode(parentRNode);\n            const refIdx = getRefFromIcuCreateOpCode(opCode);\n            ngDevMode && assertGreaterThan(refIdx, HEADER_OFFSET, 'Missing ref');\n            // `unwrapRNode` is not needed here as all of these point to RNodes as part of the i18n\n            // which can't have components.\n            const child = lView[refIdx] as RElement;\n            ngDevMode && assertDomNode(child);\n            nativeInsertBefore(renderer, parentRNode, child, insertInFrontOf, false);\n            const tIcu = getTIcu(tView, refIdx);\n            if (tIcu !== null && typeof tIcu === 'object') {\n              // If we just added a comment node which has ICU then that ICU may have already been\n              // rendered and therefore we need to re-add it here.\n              ngDevMode && assertTIcu(tIcu);\n              const caseIndex = getCurrentICUCaseIndex(tIcu, lView);\n              if (caseIndex !== null) {\n                applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, lView[tIcu.anchorIdx]);\n              }\n            }\n          }\n          break;\n        case IcuCreateOpCode.Attr:\n          const elementNodeIndex = opCode >>> IcuCreateOpCode.SHIFT_REF;\n          const attrName = mutableOpCodes[++i] as string;\n          const attrValue = mutableOpCodes[++i] as string;\n          // This code is used for ICU expressions only, since we don't support\n          // directives/components in ICUs, we don't need to worry about inputs here\n          setElementAttribute(\n              renderer, getNativeByIndex(elementNodeIndex, lView) as RElement, null, null, attrName,\n              attrValue, null);\n          break;\n        default:\n          if (ngDevMode) {\n            throw new RuntimeError(\n                RuntimeErrorCode.INVALID_I18N_STRUCTURE,\n                `Unable to determine the type of mutate operation for \"${opCode}\"`);\n          }\n      }\n    } else {\n      switch (opCode) {\n        case ICU_MARKER:\n          const commentValue = mutableOpCodes[++i] as string;\n          const commentNodeIndex = mutableOpCodes[++i] as number;\n          if (lView[commentNodeIndex] === null) {\n            ngDevMode &&\n                assertEqual(\n                    typeof commentValue, 'string',\n                    `Expected \"${commentValue}\" to be a comment node value`);\n            ngDevMode && ngDevMode.rendererCreateComment++;\n            ngDevMode && assertIndexInExpandoRange(lView, commentNodeIndex);\n            const commentRNode = lView[commentNodeIndex] =\n                createCommentNode(renderer, commentValue);\n            // FIXME(misko): Attaching patch data is only needed for the root (Also add tests)\n            attachPatchData(commentRNode, lView);\n          }\n          break;\n        case ELEMENT_MARKER:\n          const tagName = mutableOpCodes[++i] as string;\n          const elementNodeIndex = mutableOpCodes[++i] as number;\n          if (lView[elementNodeIndex] === null) {\n            ngDevMode &&\n                assertEqual(\n                    typeof tagName, 'string',\n                    `Expected \"${tagName}\" to be an element node tag name`);\n\n            ngDevMode && ngDevMode.rendererCreateElement++;\n            ngDevMode && assertIndexInExpandoRange(lView, elementNodeIndex);\n            const elementRNode = lView[elementNodeIndex] =\n                createElementNode(renderer, tagName, null);\n            // FIXME(misko): Attaching patch data is only needed for the root (Also add tests)\n            attachPatchData(elementRNode, lView);\n          }\n          break;\n        default:\n          ngDevMode &&\n              throwError(`Unable to determine the type of mutate operation for \"${opCode}\"`);\n      }\n    }\n  }\n}\n\n\n/**\n * Apply `I18nUpdateOpCodes` OpCodes\n *\n * @param tView Current `TView`\n * @param lView Current `LView`\n * @param updateOpCodes OpCodes to process\n * @param bindingsStartIndex Location of the first `ɵɵi18nApply`\n * @param changeMask Each bit corresponds to a `ɵɵi18nExp` (Counting backwards from\n *     `bindingsStartIndex`)\n */\nexport function applyUpdateOpCodes(\n    tView: TView, lView: LView, updateOpCodes: I18nUpdateOpCodes, bindingsStartIndex: number,\n    changeMask: number) {\n  for (let i = 0; i < updateOpCodes.length; i++) {\n    // bit code to check if we should apply the next update\n    const checkBit = updateOpCodes[i] as number;\n    // Number of opCodes to skip until next set of update codes\n    const skipCodes = updateOpCodes[++i] as number;\n    if (checkBit & changeMask) {\n      // The value has been updated since last checked\n      let value = '';\n      for (let j = i + 1; j <= (i + skipCodes); j++) {\n        const opCode = updateOpCodes[j];\n        if (typeof opCode == 'string') {\n          value += opCode;\n        } else if (typeof opCode == 'number') {\n          if (opCode < 0) {\n            // Negative opCode represent `i18nExp` values offset.\n            value += renderStringify(lView[bindingsStartIndex - opCode]);\n          } else {\n            const nodeIndex = (opCode >>> I18nUpdateOpCode.SHIFT_REF);\n            switch (opCode & I18nUpdateOpCode.MASK_OPCODE) {\n              case I18nUpdateOpCode.Attr:\n                const propName = updateOpCodes[++j] as string;\n                const sanitizeFn = updateOpCodes[++j] as SanitizerFn | null;\n                const tNodeOrTagName = tView.data[nodeIndex] as TNode | string;\n                ngDevMode && assertDefined(tNodeOrTagName, 'Experting TNode or string');\n                if (typeof tNodeOrTagName === 'string') {\n                  // IF we don't have a `TNode`, then we are an element in ICU (as ICU content does\n                  // not have TNode), in which case we know that there are no directives, and hence\n                  // we use attribute setting.\n                  setElementAttribute(\n                      lView[RENDERER], lView[nodeIndex], null, tNodeOrTagName, propName, value,\n                      sanitizeFn);\n                } else {\n                  elementPropertyInternal(\n                      tView, tNodeOrTagName, lView, propName, value, lView[RENDERER], sanitizeFn,\n                      false);\n                }\n                break;\n              case I18nUpdateOpCode.Text:\n                const rText = lView[nodeIndex] as RText | null;\n                rText !== null && updateTextNode(lView[RENDERER], rText, value);\n                break;\n              case I18nUpdateOpCode.IcuSwitch:\n                applyIcuSwitchCase(tView, getTIcu(tView, nodeIndex)!, lView, value);\n                break;\n              case I18nUpdateOpCode.IcuUpdate:\n                applyIcuUpdateCase(tView, getTIcu(tView, nodeIndex)!, bindingsStartIndex, lView);\n                break;\n            }\n          }\n        }\n      }\n    } else {\n      const opCode = updateOpCodes[i + 1] as number;\n      if (opCode > 0 && (opCode & I18nUpdateOpCode.MASK_OPCODE) === I18nUpdateOpCode.IcuUpdate) {\n        // Special case for the `icuUpdateCase`. It could be that the mask did not match, but\n        // we still need to execute `icuUpdateCase` because the case has changed recently due to\n        // previous `icuSwitchCase` instruction. (`icuSwitchCase` and `icuUpdateCase` always come in\n        // pairs.)\n        const nodeIndex = (opCode >>> I18nUpdateOpCode.SHIFT_REF);\n        const tIcu = getTIcu(tView, nodeIndex)!;\n        const currentIndex = lView[tIcu.currentCaseLViewIndex];\n        if (currentIndex < 0) {\n          applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView);\n        }\n      }\n    }\n    i += skipCodes;\n  }\n}\n\n/**\n * Apply OpCodes associated with updating an existing ICU.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param bindingsStartIndex Location of the first `ɵɵi18nApply`\n * @param lView Current `LView`\n */\nfunction applyIcuUpdateCase(tView: TView, tIcu: TIcu, bindingsStartIndex: number, lView: LView) {\n  ngDevMode && assertIndexInRange(lView, tIcu.currentCaseLViewIndex);\n  let activeCaseIndex = lView[tIcu.currentCaseLViewIndex];\n  if (activeCaseIndex !== null) {\n    let mask = changeMask;\n    if (activeCaseIndex < 0) {\n      // Clear the flag.\n      // Negative number means that the ICU was freshly created and we need to force the update.\n      activeCaseIndex = lView[tIcu.currentCaseLViewIndex] = ~activeCaseIndex;\n      // -1 is same as all bits on, which simulates creation since it marks all bits dirty\n      mask = -1;\n    }\n    applyUpdateOpCodes(tView, lView, tIcu.update[activeCaseIndex], bindingsStartIndex, mask);\n  }\n}\n\n/**\n * Apply OpCodes associated with switching a case on ICU.\n *\n * This involves tearing down existing case and than building up a new case.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param lView Current `LView`\n * @param value Value of the case to update to.\n */\nfunction applyIcuSwitchCase(tView: TView, tIcu: TIcu, lView: LView, value: string) {\n  // Rebuild a new case for this ICU\n  const caseIndex = getCaseIndex(tIcu, value);\n  let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);\n  if (activeCaseIndex !== caseIndex) {\n    applyIcuSwitchCaseRemove(tView, tIcu, lView);\n    lView[tIcu.currentCaseLViewIndex] = caseIndex === null ? null : ~caseIndex;\n    if (caseIndex !== null) {\n      // Add the nodes for the new case\n      const anchorRNode = lView[tIcu.anchorIdx];\n      if (anchorRNode) {\n        ngDevMode && assertDomNode(anchorRNode);\n        applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, anchorRNode);\n      }\n    }\n  }\n}\n\n/**\n * Apply OpCodes associated with tearing ICU case.\n *\n * This involves tearing down existing case and than building up a new case.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param lView Current `LView`\n */\nfunction applyIcuSwitchCaseRemove(tView: TView, tIcu: TIcu, lView: LView) {\n  let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);\n  if (activeCaseIndex !== null) {\n    const removeCodes = tIcu.remove[activeCaseIndex];\n    for (let i = 0; i < removeCodes.length; i++) {\n      const nodeOrIcuIndex = removeCodes[i] as number;\n      if (nodeOrIcuIndex > 0) {\n        // Positive numbers are `RNode`s.\n        const rNode = getNativeByIndex(nodeOrIcuIndex, lView);\n        rNode !== null && nativeRemoveNode(lView[RENDERER], rNode);\n      } else {\n        // Negative numbers are ICUs\n        applyIcuSwitchCaseRemove(tView, getTIcu(tView, ~nodeOrIcuIndex)!, lView);\n      }\n    }\n  }\n}\n\n\n/**\n * Returns the index of the current case of an ICU expression depending on the main binding value\n *\n * @param icuExpression\n * @param bindingValue The value of the main binding used by this ICU expression\n */\nfunction getCaseIndex(icuExpression: TIcu, bindingValue: string): number|null {\n  let index = icuExpression.cases.indexOf(bindingValue);\n  if (index === -1) {\n    switch (icuExpression.type) {\n      case IcuType.plural: {\n        const resolvedCase = getPluralCase(bindingValue, getLocaleId());\n        index = icuExpression.cases.indexOf(resolvedCase);\n        if (index === -1 && resolvedCase !== 'other') {\n          index = icuExpression.cases.indexOf('other');\n        }\n        break;\n      }\n      case IcuType.select: {\n        index = icuExpression.cases.indexOf('other');\n        break;\n      }\n    }\n  }\n  return index === -1 ? null : index;\n}\n"]}