[jackhill/mal.git] / matlab / Reader.m

classdef Reader < handle
    properties
        tokens
        position
    end
    methods
        function rdr = Reader(tokens)
            rdr.tokens = tokens;
            rdr.position = 1;
        end
        function tok = next(rdr)
            rdr.position = rdr.position + 1;
            if rdr.position-1 > length(rdr.tokens)
                tok = false;
            else
                tok = rdr.tokens{rdr.position-1};
            end
        end
        function tok = peek(rdr)
            if rdr.position > length(rdr.tokens)
                tok = false;
            else
                tok = rdr.tokens{rdr.position};
            end
        end
    end
end
Commit	Line	Data
9a54ea18 JM	1	classdef Reader < handle
	2	properties
	3	tokens
	4	position
	5	end
	6	methods
	7	function rdr = Reader(tokens)
	8	rdr.tokens = tokens;
	9	rdr.position = 1;
	10	end
	11	function tok = next(rdr)
	12	rdr.position = rdr.position + 1;
	13	if rdr.position-1 > length(rdr.tokens)
	14	tok = false;
	15	else
	16	tok = rdr.tokens{rdr.position-1};
	17	end
	18	end
	19	function tok = peek(rdr)
	20	if rdr.position > length(rdr.tokens)
	21	tok = false;
	22	else
	23	tok = rdr.tokens{rdr.position};
	24	end
	25	end
	26	end
	27	end