Function getSymbolWalker

test/fixtures/snapshot/typescript.js:47789–47951

(accept)

    function createGetSymbolWalker(getRestTypeOfSignature, getTypePredicateOfSignature, getReturnTypeOfSignature, getBaseTypes, resolveStructuredTypeMembers, getTypeOfSymbol, getResolvedSymbol, getConstraintOfTypeParameter, getFirstIdentifier, getTypeArguments) {
        return getSymbolWalker;
        function getSymbolWalker(accept) {
            if (accept === void 0) { accept = function () { return true; }; }
            var visitedTypes = []; // Sparse array from id to type
            var visitedSymbols = []; // Sparse array from id to symbol
            return {
                walkType: function (type) {
                    try {
                        visitType(type);
                        return { visitedTypes: ts.getOwnValues(visitedTypes), visitedSymbols: ts.getOwnValues(visitedSymbols) };
                    }
                    finally {
                        ts.clear(visitedTypes);
                        ts.clear(visitedSymbols);
                    }
                },
                walkSymbol: function (symbol) {
                    try {
                        visitSymbol(symbol);
                        return { visitedTypes: ts.getOwnValues(visitedTypes), visitedSymbols: ts.getOwnValues(visitedSymbols) };
                    }
                    finally {
                        ts.clear(visitedTypes);
                        ts.clear(visitedSymbols);
                    }
                },
            };
            function visitType(type) {
                if (!type) {
                    return;
                }
                if (visitedTypes[type.id]) {
                    return;
                }
                visitedTypes[type.id] = type;
                // Reuse visitSymbol to visit the type's symbol,
                //  but be sure to bail on recuring into the type if accept declines the symbol.
                var shouldBail = visitSymbol(type.symbol);
                if (shouldBail)
                    return;
                // Visit the type's related types, if any
                if (type.flags & 524288 /* TypeFlags.Object */) {
                    var objectType = type;
                    var objectFlags = objectType.objectFlags;
                    if (objectFlags & 4 /* ObjectFlags.Reference */) {
                        visitTypeReference(type);
                    }
                    if (objectFlags & 32 /* ObjectFlags.Mapped */) {
                        visitMappedType(type);
                    }
                    if (objectFlags & (1 /* ObjectFlags.Class */ | 2 /* ObjectFlags.Interface */)) {
                        visitInterfaceType(type);
                    }
                    if (objectFlags & (8 /* ObjectFlags.Tuple */ | 16 /* ObjectFlags.Anonymous */)) {
                        visitObjectType(objectType);
                    }
                }
                if (type.flags & 262144 /* TypeFlags.TypeParameter */) {
                    visitTypeParameter(type);