Function getAccessibleSymbolChain

test/fixtures/snapshot/typescript.js:51872–51963

(symbol, enclosingDeclaration, meaning, useOnlyExternalAliasing, visitedSymbolTablesMap)

            return rightMeaning === 111551 /* SymbolFlags.Value */ ? 111551 /* SymbolFlags.Value */ : 1920 /* SymbolFlags.Namespace */;
        }
        function getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, useOnlyExternalAliasing, visitedSymbolTablesMap) {
            if (visitedSymbolTablesMap === void 0) { visitedSymbolTablesMap = new ts.Map(); }
            if (!(symbol && !isPropertyOrMethodDeclarationSymbol(symbol))) {
                return undefined;
            }
            var links = getSymbolLinks(symbol);
            var cache = (links.accessibleChainCache || (links.accessibleChainCache = new ts.Map()));
            // Go from enclosingDeclaration to the first scope we check, so the cache is keyed off the scope and thus shared more
            var firstRelevantLocation = forEachSymbolTableInScope(enclosingDeclaration, function (_, __, ___, node) { return node; });
            var key = "".concat(useOnlyExternalAliasing ? 0 : 1, "|").concat(firstRelevantLocation && getNodeId(firstRelevantLocation), "|").concat(meaning);
            if (cache.has(key)) {
                return cache.get(key);
            }
            var id = getSymbolId(symbol);
            var visitedSymbolTables = visitedSymbolTablesMap.get(id);
            if (!visitedSymbolTables) {
                visitedSymbolTablesMap.set(id, visitedSymbolTables = []);
            }
            var result = forEachSymbolTableInScope(enclosingDeclaration, getAccessibleSymbolChainFromSymbolTable);
            cache.set(key, result);
            return result;
            /**
             * @param {ignoreQualification} boolean Set when a symbol is being looked for through the exports of another symbol (meaning we have a route to qualify it already)
             */
            function getAccessibleSymbolChainFromSymbolTable(symbols, ignoreQualification, isLocalNameLookup) {
                if (!ts.pushIfUnique(visitedSymbolTables, symbols)) {
                    return undefined;
                }
                var result = trySymbolTable(symbols, ignoreQualification, isLocalNameLookup);
                visitedSymbolTables.pop();
                return result;
            }
            function canQualifySymbol(symbolFromSymbolTable, meaning) {
                // If the symbol is equivalent and doesn't need further qualification, this symbol is accessible
                return !needsQualification(symbolFromSymbolTable, enclosingDeclaration, meaning) ||
                    // If symbol needs qualification, make sure that parent is accessible, if it is then this symbol is accessible too
                    !!getAccessibleSymbolChain(symbolFromSymbolTable.parent, enclosingDeclaration, getQualifiedLeftMeaning(meaning), useOnlyExternalAliasing, visitedSymbolTablesMap);
            }
            function isAccessible(symbolFromSymbolTable, resolvedAliasSymbol, ignoreQualification) {
                return (symbol === (resolvedAliasSymbol || symbolFromSymbolTable) || getMergedSymbol(symbol) === getMergedSymbol(resolvedAliasSymbol || symbolFromSymbolTable)) &&
                    // if the symbolFromSymbolTable is not external module (it could be if it was determined as ambient external module and would be in globals table)
                    // and if symbolFromSymbolTable or alias resolution matches the symbol,
                    // check the symbol can be qualified, it is only then this symbol is accessible
                    !ts.some(symbolFromSymbolTable.declarations, hasNonGlobalAugmentationExternalModuleSymbol) &&
                    (ignoreQualification || canQualifySymbol(getMergedSymbol(symbolFromSymbolTable), meaning));
            }
            function trySymbolTable(symbols, ignoreQualification, isLocalNameLookup) {
                // If symbol is directly available by its name in the symbol table
                if (isAccessible(symbols.get(symbol.escapedName), /*resolvedAliasSymbol*/ undefined, ignoreQualification)) {
                    return [symbol];
                }
                // Check if symbol is any of the aliases in scope
                var result = ts.forEachEntry(symbols, function (symbolFromSymbolTable) {
                    if (symbolFromSymbolTable.flags & 2097152 /* SymbolFlags.Alias */
                        && symbolFromSymbolTable.escapedName !== "export=" /* InternalSymbolName.ExportEquals */
                        && symbolFromSymbolTable.escapedName !== "default" /* InternalSymbolName.Default */
                        && !(ts.isUMDExportSymbol(symbolFromSymbolTable) && enclosingDeclaration && ts.isExternalModule(ts.getSourceFileOfNode(enclosingDeclaration)))
                        // If `!useOnlyExternalAliasing`, we can use any type of alias to get the name