123 lines
3.6 KiB
JavaScript
123 lines
3.6 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.TokenContext = void 0;
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exports.isLastChild = isLastChild;
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exports.needsParens = needsParens;
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exports.needsWhitespace = needsWhitespace;
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exports.needsWhitespaceAfter = needsWhitespaceAfter;
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exports.needsWhitespaceBefore = needsWhitespaceBefore;
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var whitespace = require("./whitespace.js");
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var parens = require("./parentheses.js");
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var _t = require("@babel/types");
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const {
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FLIPPED_ALIAS_KEYS,
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VISITOR_KEYS,
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isCallExpression,
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isDecorator,
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isExpressionStatement,
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isMemberExpression,
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isNewExpression,
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isParenthesizedExpression
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} = _t;
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const TokenContext = exports.TokenContext = {
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normal: 0,
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expressionStatement: 1,
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arrowBody: 2,
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exportDefault: 4,
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arrowFlowReturnType: 8,
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forInitHead: 16,
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forInHead: 32,
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forOfHead: 64,
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forInOrInitHeadAccumulate: 128,
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forInOrInitHeadAccumulatePassThroughMask: 128
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};
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function expandAliases(obj) {
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const map = new Map();
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function add(type, func) {
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const fn = map.get(type);
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map.set(type, fn ? function (node, parent, stack, getRawIdentifier) {
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var _fn;
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return (_fn = fn(node, parent, stack, getRawIdentifier)) != null ? _fn : func(node, parent, stack, getRawIdentifier);
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} : func);
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}
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for (const type of Object.keys(obj)) {
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const aliases = FLIPPED_ALIAS_KEYS[type];
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if (aliases) {
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for (const alias of aliases) {
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add(alias, obj[type]);
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}
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} else {
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add(type, obj[type]);
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}
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}
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return map;
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}
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const expandedParens = expandAliases(parens);
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const expandedWhitespaceNodes = expandAliases(whitespace.nodes);
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function isOrHasCallExpression(node) {
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if (isCallExpression(node)) {
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return true;
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}
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return isMemberExpression(node) && isOrHasCallExpression(node.object);
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}
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function needsWhitespace(node, parent, type) {
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var _expandedWhitespaceNo;
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if (!node) return false;
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if (isExpressionStatement(node)) {
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node = node.expression;
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}
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const flag = (_expandedWhitespaceNo = expandedWhitespaceNodes.get(node.type)) == null ? void 0 : _expandedWhitespaceNo(node, parent);
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if (typeof flag === "number") {
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return (flag & type) !== 0;
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}
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return false;
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}
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function needsWhitespaceBefore(node, parent) {
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return needsWhitespace(node, parent, 1);
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}
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function needsWhitespaceAfter(node, parent) {
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return needsWhitespace(node, parent, 2);
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}
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function needsParens(node, parent, tokenContext, getRawIdentifier) {
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var _expandedParens$get;
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if (!parent) return false;
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if (isNewExpression(parent) && parent.callee === node) {
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if (isOrHasCallExpression(node)) return true;
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}
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if (isDecorator(parent)) {
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return !isDecoratorMemberExpression(node) && !(isCallExpression(node) && isDecoratorMemberExpression(node.callee)) && !isParenthesizedExpression(node);
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}
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return (_expandedParens$get = expandedParens.get(node.type)) == null ? void 0 : _expandedParens$get(node, parent, tokenContext, getRawIdentifier);
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}
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function isDecoratorMemberExpression(node) {
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switch (node.type) {
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case "Identifier":
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return true;
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case "MemberExpression":
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return !node.computed && node.property.type === "Identifier" && isDecoratorMemberExpression(node.object);
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default:
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return false;
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}
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}
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function isLastChild(parent, child) {
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const visitorKeys = VISITOR_KEYS[parent.type];
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for (let i = visitorKeys.length - 1; i >= 0; i--) {
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const val = parent[visitorKeys[i]];
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if (val === child) {
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return true;
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} else if (Array.isArray(val)) {
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let j = val.length - 1;
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while (j >= 0 && val[j] === null) j--;
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return j >= 0 && val[j] === child;
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} else if (val) {
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return false;
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}
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}
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return false;
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}
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//# sourceMappingURL=index.js.map
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