Function read_next

js/SCAST.js:153–204

()

        }
        var start;
        function read_next() {
            read_while(is_whitespace);
            if (input.eof()) return null;
            var ch = input.peek();
            start=input.poi();
            if (ch == "#"||(ch=='/'&&input.peek(1)=='/')) {
                // skip_comment();
                // return read_next();
                return {
                    type  : "Comment",
                    value : read_while(function(ch){ return ch != "\n" }),
                    poi:{
                        line:start.line,
                        start:start.column,
                        end:input.poi().column
                    }
                };
            }
            if (ch == '"') return read_string('"');
            if (ch == "'") return read_string("'");
            if (ch == "`") return read_string("`");
            if (is_digit(ch)) return read_number();
            if (is_id_start(ch)) return read_ident();
            if (is_punc(ch)) return {
                type  : "punc",
                value : input.next(),
                poi:{
                    line:start.line,
                    start:start.column,
                    end:input.poi().column
                }
            };
            if (is_split(ch)) return {
                    type  : "sp",
                    value : input.next(),
                    poi:{
                        line:start.line,
                        start:start.column,
                        end:input.poi().column
                    }
            };
            if (is_op_char(ch)) return {
                type  : "op",
                value : read_while(is_op_char),
                poi:{
                    line:start.line,
                    start:start.column,
                    end:input.poi().column
                }
            };
            input.croak(`Can't handle character :${ch}(${ch.charCodeAt(0)})`);
        }
        function peek() {
            return current || (current = read_next());//after next() not call peek()
        }