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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports._getKey = _getKey;
exports._getPattern = _getPattern;
exports.get = get;
exports.getAllNextSiblings = getAllNextSiblings;
exports.getAllPrevSiblings = getAllPrevSiblings;
exports.getBindingIdentifierPaths = getBindingIdentifierPaths;
exports.getBindingIdentifiers = getBindingIdentifiers;
exports.getCompletionRecords = getCompletionRecords;
exports.getNextSibling = getNextSibling;
exports.getOpposite = getOpposite;
exports.getOuterBindingIdentifierPaths = getOuterBindingIdentifierPaths;
exports.getOuterBindingIdentifiers = getOuterBindingIdentifiers;
exports.getPrevSibling = getPrevSibling;
exports.getSibling = getSibling;
var _index = require("./index");
var _t = require("@babel/types");
const {
getBindingIdentifiers: _getBindingIdentifiers,
getOuterBindingIdentifiers: _getOuterBindingIdentifiers,
isDeclaration,
numericLiteral,
unaryExpression
} = _t;
const NORMAL_COMPLETION = 0;
const BREAK_COMPLETION = 1;
function NormalCompletion(path) {
return {
type: NORMAL_COMPLETION,
path
};
}
function BreakCompletion(path) {
return {
type: BREAK_COMPLETION,
path
};
}
function getOpposite() {
if (this.key === "left") {
return this.getSibling("right");
} else if (this.key === "right") {
return this.getSibling("left");
}
return null;
}
function addCompletionRecords(path, records, context) {
if (path) {
records.push(..._getCompletionRecords(path, context));
}
return records;
}
function completionRecordForSwitch(cases, records, context) {
let lastNormalCompletions = [];
for (let i = 0; i < cases.length; i++) {
const casePath = cases[i];
const caseCompletions = _getCompletionRecords(casePath, context);
const normalCompletions = [];
const breakCompletions = [];
for (const c of caseCompletions) {
if (c.type === NORMAL_COMPLETION) {
normalCompletions.push(c);
}
if (c.type === BREAK_COMPLETION) {
breakCompletions.push(c);
}
}
if (normalCompletions.length) {
lastNormalCompletions = normalCompletions;
}
records.push(...breakCompletions);
}
records.push(...lastNormalCompletions);
return records;
}
function normalCompletionToBreak(completions) {
completions.forEach(c => {
c.type = BREAK_COMPLETION;
});
}
function replaceBreakStatementInBreakCompletion(completions, reachable) {
completions.forEach(c => {
if (c.path.isBreakStatement({
label: null
})) {
if (reachable) {
c.path.replaceWith(unaryExpression("void", numericLiteral(0)));
} else {
c.path.remove();
}
}
});
}
function getStatementListCompletion(paths, context) {
const completions = [];
if (context.canHaveBreak) {
let lastNormalCompletions = [];
for (let i = 0; i < paths.length; i++) {
const path = paths[i];
const newContext = Object.assign({}, context, {
inCaseClause: false
});
if (path.isBlockStatement() && (context.inCaseClause || context.shouldPopulateBreak)) {
newContext.shouldPopulateBreak = true;
} else {
newContext.shouldPopulateBreak = false;
}
const statementCompletions = _getCompletionRecords(path, newContext);
if (statementCompletions.length > 0 && statementCompletions.every(c => c.type === BREAK_COMPLETION)) {
if (lastNormalCompletions.length > 0 && statementCompletions.every(c => c.path.isBreakStatement({
label: null
}))) {
normalCompletionToBreak(lastNormalCompletions);
completions.push(...lastNormalCompletions);
if (lastNormalCompletions.some(c => c.path.isDeclaration())) {
completions.push(...statementCompletions);
replaceBreakStatementInBreakCompletion(statementCompletions, true);
}
replaceBreakStatementInBreakCompletion(statementCompletions, false);
} else {
completions.push(...statementCompletions);
if (!context.shouldPopulateBreak) {
replaceBreakStatementInBreakCompletion(statementCompletions, true);
}
}
break;
}
if (i === paths.length - 1) {
completions.push(...statementCompletions);
} else {
lastNormalCompletions = [];
for (let i = 0; i < statementCompletions.length; i++) {
const c = statementCompletions[i];
if (c.type === BREAK_COMPLETION) {
completions.push(c);
}
if (c.type === NORMAL_COMPLETION) {
lastNormalCompletions.push(c);
}
}
}
}
} else if (paths.length) {
for (let i = paths.length - 1; i >= 0; i--) {
const pathCompletions = _getCompletionRecords(paths[i], context);
if (pathCompletions.length > 1 || pathCompletions.length === 1 && !pathCompletions[0].path.isVariableDeclaration()) {
completions.push(...pathCompletions);
break;
}
}
}
return completions;
}
function _getCompletionRecords(path, context) {
let records = [];
if (path.isIfStatement()) {
records = addCompletionRecords(path.get("consequent"), records, context);
records = addCompletionRecords(path.get("alternate"), records, context);
} else if (path.isDoExpression() || path.isFor() || path.isWhile() || path.isLabeledStatement()) {
return addCompletionRecords(path.get("body"), records, context);
} else if (path.isProgram() || path.isBlockStatement()) {
return getStatementListCompletion(path.get("body"), context);
} else if (path.isFunction()) {
return _getCompletionRecords(path.get("body"), context);
} else if (path.isTryStatement()) {
records = addCompletionRecords(path.get("block"), records, context);
records = addCompletionRecords(path.get("handler"), records, context);
} else if (path.isCatchClause()) {
return addCompletionRecords(path.get("body"), records, context);
} else if (path.isSwitchStatement()) {
return completionRecordForSwitch(path.get("cases"), records, context);
} else if (path.isSwitchCase()) {
return getStatementListCompletion(path.get("consequent"), {
canHaveBreak: true,
shouldPopulateBreak: false,
inCaseClause: true
});
} else if (path.isBreakStatement()) {
records.push(BreakCompletion(path));
} else {
records.push(NormalCompletion(path));
}
return records;
}
function getCompletionRecords() {
const records = _getCompletionRecords(this, {
canHaveBreak: false,
shouldPopulateBreak: false,
inCaseClause: false
});
return records.map(r => r.path);
}
function getSibling(key) {
return _index.default.get({
parentPath: this.parentPath,
parent: this.parent,
container: this.container,
listKey: this.listKey,
key: key
}).setContext(this.context);
}
function getPrevSibling() {
return this.getSibling(this.key - 1);
}
function getNextSibling() {
return this.getSibling(this.key + 1);
}
function getAllNextSiblings() {
let _key = this.key;
let sibling = this.getSibling(++_key);
const siblings = [];
while (sibling.node) {
siblings.push(sibling);
sibling = this.getSibling(++_key);
}
return siblings;
}
function getAllPrevSiblings() {
let _key = this.key;
let sibling = this.getSibling(--_key);
const siblings = [];
while (sibling.node) {
siblings.push(sibling);
sibling = this.getSibling(--_key);
}
return siblings;
}
function get(key, context = true) {
if (context === true) context = this.context;
const parts = key.split(".");
if (parts.length === 1) {
return this._getKey(key, context);
} else {
return this._getPattern(parts, context);
}
}
function _getKey(key, context) {
const node = this.node;
const container = node[key];
if (Array.isArray(container)) {
return container.map((_, i) => {
return _index.default.get({
listKey: key,
parentPath: this,
parent: node,
container: container,
key: i
}).setContext(context);
});
} else {
return _index.default.get({
parentPath: this,
parent: node,
container: node,
key: key
}).setContext(context);
}
}
function _getPattern(parts, context) {
let path = this;
for (const part of parts) {
if (part === ".") {
path = path.parentPath;
} else {
if (Array.isArray(path)) {
path = path[part];
} else {
path = path.get(part, context);
}
}
}
return path;
}
function getBindingIdentifiers(duplicates) {
return _getBindingIdentifiers(this.node, duplicates);
}
function getOuterBindingIdentifiers(duplicates) {
return _getOuterBindingIdentifiers(this.node, duplicates);
}
function getBindingIdentifierPaths(duplicates = false, outerOnly = false) {
const path = this;
const search = [path];
const ids = Object.create(null);
while (search.length) {
const id = search.shift();
if (!id) continue;
if (!id.node) continue;
const keys = _getBindingIdentifiers.keys[id.node.type];
if (id.isIdentifier()) {
if (duplicates) {
const _ids = ids[id.node.name] = ids[id.node.name] || [];
_ids.push(id);
} else {
ids[id.node.name] = id;
}
continue;
}
if (id.isExportDeclaration()) {
const declaration = id.get("declaration");
if (isDeclaration(declaration)) {
search.push(declaration);
}
continue;
}
if (outerOnly) {
if (id.isFunctionDeclaration()) {
search.push(id.get("id"));
continue;
}
if (id.isFunctionExpression()) {
continue;
}
}
if (keys) {
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
const child = id.get(key);
if (Array.isArray(child)) {
search.push(...child);
} else if (child.node) {
search.push(child);
}
}
}
}
return ids;
}
function getOuterBindingIdentifierPaths(duplicates) {
return this.getBindingIdentifierPaths(duplicates, true);
}