| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | import {HIRFunction, isPropsType} from '../HIR'; |
| 9 | |
| 10 | /** |
| 11 | * Converts method calls into regular calls where the receiver is the props object: |
| 12 | * |
| 13 | * Example: |
| 14 | * |
| 15 | * ``` |
| 16 | * // INPUT |
| 17 | * props.foo(); |
| 18 | * |
| 19 | * // OUTPUT |
| 20 | * const t0 = props.foo; |
| 21 | * t0(); |
| 22 | * ``` |
| 23 | * |
| 24 | * Counter example: |
| 25 | * |
| 26 | * Here the receiver is `props.foo`, not the props object, so we don't rewrite it: |
| 27 | * |
| 28 | * // INPUT |
| 29 | * props.foo.bar(); |
| 30 | * |
| 31 | * // OUTPUT |
| 32 | * props.foo.bar(); |
| 33 | * ``` |
| 34 | */ |
| 35 | export function optimizePropsMethodCalls(fn: HIRFunction): void { |
| 36 | for (const [, block] of fn.body.blocks) { |
| 37 | for (let i = 0; i < block.instructions.length; i++) { |
| 38 | const instr = block.instructions[i]!; |
| 39 | if ( |
| 40 | instr.value.kind === 'MethodCall' && |
| 41 | isPropsType(instr.value.receiver.identifier) |
| 42 | ) { |
| 43 | instr.value = { |
| 44 | kind: 'CallExpression', |
| 45 | callee: instr.value.property, |
| 46 | args: instr.value.args, |
| 47 | loc: instr.value.loc, |
| 48 | }; |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 | } |