File size: 6,034 Bytes
00df61d | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _helperPluginUtils = require("@babel/helper-plugin-utils");
var _helperCreateClassFeaturesPlugin = require("@babel/helper-create-class-features-plugin");
function generateUid(scope, denyList) {
const name = "";
let uid;
let i = 1;
do {
uid = `_${name}`;
if (i > 1) uid += i;
i++;
} while (denyList.has(uid));
return uid;
}
function mapLast(arr, fn) {
if (arr.length === 0) return arr;
return [...arr.slice(0, -1), fn(arr[arr.length - 1])];
}
var _default = exports.default = (0, _helperPluginUtils.declare)(({
types: t,
template,
traverse,
assertVersion
}) => {
assertVersion("^7.12.0 || ^8.0.0-0 || >8.0.0-alpha <8.0.0-beta");
const rawNamedEvaluationVisitor = (0, _helperCreateClassFeaturesPlugin.buildNamedEvaluationVisitor)(path => {
if (!path.isClassExpression()) return false;
for (let i = path.node.body.body.length - 1; i >= 0; i--) {
const el = path.node.body.body[i];
if (t.isStaticBlock(el)) {
return true;
}
if ((t.isClassProperty(el) || t.isClassPrivateProperty(el)) && el.static) {
break;
}
}
return false;
}, (classPath, state, name) => {
const nameNode = typeof name === "string" ? t.stringLiteral(name) : name;
classPath.get("body").unshiftContainer("body", t.staticBlock([template.statement.ast`
${state.addHelper("setFunctionName")}(this, ${nameNode});
`]));
});
if (!t.classAccessorProperty) {
delete rawNamedEvaluationVisitor.ClassAccessorProperty;
}
const namedEvaluationVisitor = traverse.visitors.explode(rawNamedEvaluationVisitor);
const maybeSequenceExpression = expressions => {
if (expressions.length === 1) {
return expressions[0];
} else {
return t.sequenceExpression(expressions);
}
};
const blocksToExpressions = blocks => blocks.map(block => {
const {
body
} = block;
if (body.length === 1 && t.isExpressionStatement(body[0])) {
return t.inheritsComments(t.inheritsComments(body[0].expression, body[0]), block);
}
return t.inheritsComments(template.expression.ast`(() => { ${body} })()`, block);
});
const prependToInitializer = (prop, expressions) => {
prop.value = prop.value ? t.sequenceExpression([...expressions, prop.value]) : maybeSequenceExpression(mapLast(expressions, expr => t.unaryExpression("void", expr)));
};
return {
name: "transform-class-static-block",
manipulateOptions: (_, parser) => parser.plugins.push("classStaticBlock"),
pre() {
(0, _helperCreateClassFeaturesPlugin.enableFeature)(this.file, _helperCreateClassFeaturesPlugin.FEATURES.staticBlocks, false);
},
visitor: {
ClassBody(classBody) {
const {
scope
} = classBody;
let parentPath = classBody.parentPath;
if (parentPath.isClassExpression() && !parentPath.node.id) {
do ({
parentPath
} = parentPath); while (parentPath && !namedEvaluationVisitor[parentPath.type] && !parentPath.isStatement());
if (parentPath) {
var _namedEvaluationVisit;
(_namedEvaluationVisit = namedEvaluationVisitor[parentPath.type]) == null || _namedEvaluationVisit.enter.forEach(f => f.call(this, parentPath, this));
}
}
const pendingStaticBlocks = [];
let lastStaticProp = null;
for (const path of classBody.get("body")) {
if (path.isStaticBlock()) {
pendingStaticBlocks.push(path.node);
path.remove();
} else if (path.isClassProperty({
static: true
}) || path.isClassPrivateProperty({
static: true
})) {
lastStaticProp = path;
if (pendingStaticBlocks.length > 0) {
prependToInitializer(path.node, blocksToExpressions(pendingStaticBlocks));
pendingStaticBlocks.length = 0;
}
}
}
if (pendingStaticBlocks.length > 0) {
const tmp = scope.generateDeclaredUidIdentifier("staticBlock");
let arrowBody;
const needsCompletionValue = classBody.parentPath.isExpression();
if (pendingStaticBlocks.length > 1 || pendingStaticBlocks[0].body.length === 1 && t.isExpressionStatement(pendingStaticBlocks[0].body[0])) {
const expressions = blocksToExpressions(pendingStaticBlocks);
if (needsCompletionValue) {
expressions.push(t.thisExpression());
}
arrowBody = maybeSequenceExpression(expressions);
} else {
arrowBody = t.blockStatement(pendingStaticBlocks[0].body);
if (needsCompletionValue) {
arrowBody.body.push(t.returnStatement(t.thisExpression()));
}
}
const init = template.expression.ast`${tmp} = () => ${arrowBody}`;
if (lastStaticProp) {
prependToInitializer(lastStaticProp.node, [init]);
} else {
const privateNames = new Set();
for (const path of classBody.get("body")) {
if (path.isPrivate()) {
privateNames.add(path.get("key.id").node.name);
}
}
const staticBlockPrivateId = generateUid(scope, privateNames);
const staticBlockRef = t.privateName(t.identifier(staticBlockPrivateId));
classBody.pushContainer("body", [t.classPrivateProperty(staticBlockRef, init, [], true)]);
}
const staticBlockClosureCall = t.callExpression(t.cloneNode(tmp), []);
if (classBody.parentPath.isClassExpression()) {
classBody.parentPath.replaceWith(t.sequenceExpression([classBody.parent, staticBlockClosureCall]));
} else {
classBody.parentPath.insertAfter(t.expressionStatement(staticBlockClosureCall));
}
}
}
}
};
});
//# sourceMappingURL=index.js.map
|