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[compiler] Store original and new prop names #31440

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Merged
gsathya merged 1 commit into from
Nov 6, 2024
Merged

[compiler] Store original and new prop names #31440

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76 changes: 49 additions & 27 deletions compiler/packages/babel-plugin-react-compiler/src/Optimization/OutlineJsx.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -210,10 +210,16 @@ function process(
return {instrs: newInstrs, fn: outlinedFn};
}

type OutlinedJsxAttribute = {
originalName: string;
newName: string;
place: Place;
};

function collectProps(
instructions: Array<JsxInstruction>,
): Array<JsxAttribute> | null {
const attributes: Array<JsxAttribute> = [];
): Array<OutlinedJsxAttribute> | null {
const attributes: Array<OutlinedJsxAttribute> = [];
const jsxIds = new Set(instructions.map(i => i.lvalue.identifier.id));
const seen: Set<string> = new Set();
for (const instr of instructions) {
Expand All @@ -234,7 +240,11 @@ function collectProps(

if (at.kind === 'JsxAttribute') {
seen.add(at.name);
attributes.push(at);
attributes.push({
originalName: at.name,
newName: at.name,
place: at.place,
});
}
}

Expand All @@ -252,9 +262,15 @@ function collectProps(
function emitOutlinedJsx(
env: Environment,
instructions: Array<Instruction>,
props: Array<JsxAttribute>,
outlinedProps: Array<OutlinedJsxAttribute>,
outlinedTag: string,
): Array<Instruction> {
const props: Array<JsxAttribute> = outlinedProps.map(p => ({
kind: 'JsxAttribute',
name: p.newName,
place: p.place,
}));

const loadJsx: Instruction = {
id: makeInstructionId(0),
loc: GeneratedSource,
Expand Down Expand Up @@ -290,7 +306,7 @@ function emitOutlinedJsx(
function emitOutlinedFn(
env: Environment,
jsx: Array<JsxInstruction>,
oldProps: Array<JsxAttribute>,
oldProps: Array<OutlinedJsxAttribute>,
globals: LoadGlobalMap,
): HIRFunction | null {
const instructions: Array<Instruction> = [];
Expand All @@ -299,9 +315,11 @@ function emitOutlinedFn(
const propsObj: Place = createTemporaryPlace(env, GeneratedSource);
promoteTemporary(propsObj.identifier);

const destructurePropsInstr = emitDestructureProps(env, propsObj, [
...oldToNewProps.values(),
]);
const destructurePropsInstr = emitDestructureProps(
env,
propsObj,
oldToNewProps,
);
instructions.push(destructurePropsInstr);

const updatedJsxInstructions = emitUpdatedJsx(jsx, oldToNewProps);
Expand Down Expand Up @@ -368,7 +386,7 @@ function emitLoadGlobals(

function emitUpdatedJsx(
jsx: Array<JsxInstruction>,
oldToNewProps: Map<IdentifierId, ObjectProperty>,
oldToNewProps: Map<IdentifierId, OutlinedJsxAttribute>,
): Array<JsxInstruction> {
const newInstrs: Array<JsxInstruction> = [];

Expand All @@ -390,7 +408,8 @@ function emitUpdatedJsx(
`Expected a new property for ${printIdentifier(prop.place.identifier)}`,
);
newProps.push({
...prop,
kind: 'JsxAttribute',
name: newProp.originalName,
place: newProp.place,
});
}
Expand All @@ -409,31 +428,21 @@ function emitUpdatedJsx(

function createOldToNewPropsMapping(
env: Environment,
oldProps: Array<JsxAttribute>,
): Map<IdentifierId, ObjectProperty> {
oldProps: Array<OutlinedJsxAttribute>,
): Map<IdentifierId, OutlinedJsxAttribute> {
const oldToNewProps = new Map();

for (const oldProp of oldProps) {
invariant(
oldProp.kind === 'JsxAttribute',
`Expected only attributes but found ${oldProp.kind}`,
);

// Do not read key prop in the outlined component
if (oldProp.name === 'key') {
if (oldProp.originalName === 'key') {
continue;
}

const newProp: ObjectProperty = {
kind: 'ObjectProperty',
key: {
kind: 'string',
name: oldProp.name,
},
type: 'property',
const newProp: OutlinedJsxAttribute = {
...oldProp,
place: createTemporaryPlace(env, GeneratedSource),
};
newProp.place.identifier.name = makeIdentifierName(oldProp.name);
newProp.place.identifier.name = makeIdentifierName(oldProp.newName);
oldToNewProps.set(oldProp.place.identifier.id, newProp);
}

Expand All @@ -443,8 +452,21 @@ function createOldToNewPropsMapping(
function emitDestructureProps(
env: Environment,
propsObj: Place,
properties: Array<ObjectProperty>,
oldToNewProps: Map<IdentifierId, OutlinedJsxAttribute>,
): Instruction {
const properties: Array<ObjectProperty> = [];
for (const [_, prop] of oldToNewProps) {
properties.push({
kind: 'ObjectProperty',
key: {
kind: 'string',
name: prop.newName,
},
type: 'property',
place: prop.place,
});
}

const destructurePropsInstr: Instruction = {
id: makeInstructionId(0),
lvalue: createTemporaryPlace(env, GeneratedSource),
Expand Down