nud: function()

in MultiRegion/2_UI/src/assets/js/aws/aws-cognito-sdk.js [14153:14226]
74 lines of code
21 McCabe index (conditional complexity)

      nud: function(token) {
        var left;
        var right;
        var expression;
        switch (token.type) {
          case TOK_LITERAL:
            return {type: "Literal", value: token.value};
          case TOK_UNQUOTEDIDENTIFIER:
            return {type: "Field", name: token.value};
          case TOK_QUOTEDIDENTIFIER:
            var node = {type: "Field", name: token.value};
            if (this._lookahead(0) === TOK_LPAREN) {
                throw new Error("Quoted identifier not allowed for function names.");
            } else {
                return node;
            }
            break;
          case TOK_NOT:
            right = this.expression(bindingPower.Not);
            return {type: "NotExpression", children: [right]};
          case TOK_STAR:
            left = {type: "Identity"};
            right = null;
            if (this._lookahead(0) === TOK_RBRACKET) {
                right = {type: "Identity"};
            } else {
                right = this._parseProjectionRHS(bindingPower.Star);
            }
            return {type: "ValueProjection", children: [left, right]};
          case TOK_FILTER:
            return this.led(token.type, {type: "Identity"});
          case TOK_LBRACE:
            return this._parseMultiselectHash();
          case TOK_FLATTEN:
            left = {type: TOK_FLATTEN, children: [{type: "Identity"}]};
            right = this._parseProjectionRHS(bindingPower.Flatten);
            return {type: "Projection", children: [left, right]};
          case TOK_LBRACKET:
            if (this._lookahead(0) === TOK_NUMBER || this._lookahead(0) === TOK_COLON) {
                right = this._parseIndexExpression();
                return this._projectIfSlice({type: "Identity"}, right);
            } else if (this._lookahead(0) === TOK_STAR &&
                       this._lookahead(1) === TOK_RBRACKET) {
                this._advance();
                this._advance();
                right = this._parseProjectionRHS(bindingPower.Star);
                return {type: "Projection",
                        children: [{type: "Identity"}, right]};
            } else {
                return this._parseMultiselectList();
            }
            break;
          case TOK_CURRENT:
            return {type: TOK_CURRENT};
          case TOK_EXPREF:
            expression = this.expression(bindingPower.Expref);
            return {type: "ExpressionReference", children: [expression]};
          case TOK_LPAREN:
            var args = [];
            while (this._lookahead(0) !== TOK_RPAREN) {
              if (this._lookahead(0) === TOK_CURRENT) {
                expression = {type: TOK_CURRENT};
                this._advance();
              } else {
                expression = this.expression(0);
              }
              args.push(expression);
            }
            this._match(TOK_RPAREN);
            return args[0];
          default:
            this._errorToken(token);
        }
      },