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%% Correctly defined arguments block
function y = foo (x)
% Some comment here
% And, maybe, here
arguments
x (1,2) {mustBeReal(x)}
end
y = x*2;
arguments = 1;
y = y + arguments;
end
%% No arguments block, "arguments" is used
% as a variable name (identifier)
% Prevent arguments from folding with an identifier
function y = foo (x)
% Some comment here
x = x + 1;
arguments = 10;
y = x + arguments;
end
% Prevent arguments from folding with a number
function y = foo (x)
4
arguments = 10;
y = x + arguments;
end
% With a double quote string
function y = foo (x)
"test"
arguments = 10;
y = x + arguments;
end
% With a string
function y = foo (x)
'test'
arguments = 10;
y = x + arguments;
end
% With a keyword
function y = foo (x)
if x == 0;
return 0;
end
arguments = 10;
y = x + arguments;
end
% With an operator (illegal syntax)
function y = foo (x)
*
arguments = 10;
y = x + arguments;
end
% Semicolon is equivalent to a comment
function y = foo(x)
;;;;;;;
arguments
x
end
y = x + 2;
end
% Arguments block is illegal in nested functions,
% but lexer should process it anyway
function y = foo (x)
arguments
x (1,2) {mustBeReal(x)}
end
function y = foo (x)
arguments
x (1,2) {mustBeReal(x)}
end
var = 0;
arguments = 5;
y = arguments + x;
end
% Use as a variable, just in case
arguments = 10;
end
% Erroneous use of arguments block
function y = foo(x)
% Some comment
x = x + 1;
arguments
x
end
y = x;
end
% "arguments" is an argument name too
function r = foo(x, arguments)
arguments
x
arguments
end
r = bar(x, arguments{:});
end
% Multiple arguments blocks
function [a, b] = foo(x, y, varargin)
arguments(Input)
x (1,4) {mustBeReal}
y (1,:) {mustBeInteger} = x(2:end);
end
arguments(Input, Repeating)
varargin
end
arguments(Output)
a (1,1) {mustBeReal}
b (1,1) {mustBeNonNegative}
end
var = 10;
arguments = {"now", "it's", "variable"};
[a, b] = bar(x, y, arguments);
end
% One line function with arguments block.
% This code style is rarely used (if at all), but the
% lexer shouldn't break
function y = foo(x); arguments; x; end; y = bar(x); end
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