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# -*- coding: utf-8 -*-
# Copyright (c) Vispy Development Team. All Rights Reserved.
# Distributed under the (new) BSD License. See LICENSE.txt for more info.
import re
from vispy.visuals.shaders.parsing import re_identifier, find_program_variables
from vispy.testing import run_tests_if_main
def test_identifier():
assert(re.match('('+re_identifier+')', 'Ax2_d3__7').groups()[0] ==
'Ax2_d3__7')
assert(re.match('('+re_identifier+')', '_Ax2_d3__7').groups()[0] ==
'_Ax2_d3__7')
assert(re.match(re_identifier, '7Ax2_d3__7') is None)
assert(re.match('('+re_identifier+')', 'x,y').groups()[0] == 'x')
assert(re.match('('+re_identifier+')', 'x y').groups()[0] == 'x')
def test_find_variables():
code = """
float x;
float y, z;
int w,v,u;
junk
vec4 t = vec4(0, 0, 1, 1);
junk junk junk;
uniform vec2 s;
attribute float r,q;
const mat4 p;
void main() {
vec2 float undetectable;
}
"""
expect = dict(
x=(None, 'float'),
y=(None, 'float'),
z=(None, 'float'),
w=(None, 'int'),
v=(None, 'int'),
u=(None, 'int'),
t=(None, 'vec4'),
s=('uniform', 'vec2'),
q=('attribute', 'float'),
r=('attribute', 'float'),
p=('const', 'mat4'),
)
vars = find_program_variables(code)
for k in expect:
assert expect[k] == vars.pop(k)
assert len(vars) == 0
run_tests_if_main()
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