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keksAccountGUI/node_modulesOLD/@babel/helper-simple-access/lib/index.js
2019-08-11 20:48:02 +02:00

85 lines
No EOL
2.9 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = simplifyAccess;
function t() {
const data = _interopRequireWildcard(require("@babel/types"));
t = function () {
return data;
};
return data;
}
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
function simplifyAccess(path, bindingNames) {
path.traverse(simpleAssignmentVisitor, {
scope: path.scope,
bindingNames,
seen: new WeakSet()
});
}
const simpleAssignmentVisitor = {
UpdateExpression: {
exit(path) {
const {
scope,
bindingNames
} = this;
const arg = path.get("argument");
if (!arg.isIdentifier()) return;
const localName = arg.node.name;
if (!bindingNames.has(localName)) return;
if (scope.getBinding(localName) !== path.scope.getBinding(localName)) {
return;
}
if (path.parentPath.isExpressionStatement() && !path.isCompletionRecord()) {
const operator = path.node.operator == "++" ? "+=" : "-=";
path.replaceWith(t().assignmentExpression(operator, arg.node, t().numericLiteral(1)));
} else if (path.node.prefix) {
path.replaceWith(t().assignmentExpression("=", t().identifier(localName), t().binaryExpression(path.node.operator[0], t().unaryExpression("+", arg.node), t().numericLiteral(1))));
} else {
const old = path.scope.generateUidIdentifierBasedOnNode(arg.node, "old");
const varName = old.name;
path.scope.push({
id: old
});
const binary = t().binaryExpression(path.node.operator[0], t().identifier(varName), t().numericLiteral(1));
path.replaceWith(t().sequenceExpression([t().assignmentExpression("=", t().identifier(varName), t().unaryExpression("+", arg.node)), t().assignmentExpression("=", t().cloneNode(arg.node), binary), t().identifier(varName)]));
}
}
},
AssignmentExpression: {
exit(path) {
const {
scope,
seen,
bindingNames
} = this;
if (path.node.operator === "=") return;
if (seen.has(path.node)) return;
seen.add(path.node);
const left = path.get("left");
if (!left.isIdentifier()) return;
const localName = left.node.name;
if (!bindingNames.has(localName)) return;
if (scope.getBinding(localName) !== path.scope.getBinding(localName)) {
return;
}
path.node.right = t().binaryExpression(path.node.operator.slice(0, -1), t().cloneNode(path.node.left), path.node.right);
path.node.operator = "=";
}
}
};