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Substitution variables

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Darren Burns
2022-02-02 15:49:16 +00:00
parent ac9e3cdfff
commit 65a6b8d261
5 changed files with 140 additions and 34 deletions
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54
tests/css/test_parse.py
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@@ -1,19 +1,61 @@
import pytest
from rich.color import Color, ColorType
# from textual.css.parse import _resolve_variables
from textual.css.errors import UnresolvedVariableError
from textual.css.parse import substitute_references
from textual.css.scalar import Scalar, Unit
from textual.css.stylesheet import Stylesheet, StylesheetParseError
from textual.css.tokenize import tokenize
from textual.css.tokenizer import Token
from textual.css.transition import Transition
from textual.layouts.dock import DockLayout
# class TestVariableResolution:
# def test_resolve_single_variable(self):
# css = "$x: 1;"
# variables = _resolve_variables(tokenize(css, ""))
# assert variables == {"x": }
class TestVariableReferenceSubstitution:
def test_simple_reference(self):
css = "$x: 1; #some-widget{border: $x;}"
variables = substitute_references(tokenize(css, ""))
assert list(variables) == [
Token(name='variable_name', value='$x:', path='', code=css, location=(0, 0)),
Token(name='whitespace', value=' ', path='', code=css, location=(0, 3)),
Token(name='number', value='1', path='', code=css, location=(0, 4)),
Token(name='variable_value_end', value=';', path='', code=css, location=(0, 5)),
Token(name='whitespace', value=' ', path='', code=css, location=(0, 6)),
Token(name='selector_start_id', value='#some-widget', path='', code=css, location=(0, 7)),
Token(name='declaration_set_start', value='{', path='', code=css, location=(0, 19)),
Token(name='declaration_name', value='border:', path='', code=css, location=(0, 20)),
Token(name='whitespace', value=' ', path='', code=css, location=(0, 27)),
Token(name='number', value='1', path='', code=css, location=(0, 4)),
Token(name='declaration_end', value=';', path='', code=css, location=(0, 30)),
Token(name='declaration_set_end', value='}', path='', code=css, location=(0, 31))
]
def test_undefined_variable(self):
css = ".thing { border: $not-defined; }"
with pytest.raises(UnresolvedVariableError):
list(substitute_references(tokenize(css, "")))
def test_transitive_reference(self):
css = "$x: 1\n$y: $x\n.thing { border: $y }"
assert list(substitute_references(tokenize(css, ""))) == [
Token(name='variable_name', value='$x:', path='', code=css, location=(0, 0)),
Token(name='whitespace', value=' ', path='', code=css, location=(0, 3)),
Token(name='number', value='1', path='', code=css, location=(0, 4)),
Token(name='variable_value_end', value='\n', path='', code=css, location=(0, 5)),
Token(name='variable_name', value='$y:', path='', code=css, location=(1, 0)),
Token(name='whitespace', value=' ', path='', code=css, location=(1, 3)),
Token(name='number', value='1', path='', code=css, location=(0, 4)),
Token(name='variable_value_end', value='\n', path='', code=css, location=(1, 6)),
Token(name='selector_start_class', value='.thing', path='', code=css, location=(2, 0)),
Token(name='whitespace', value=' ', path='', code=css, location=(2, 6)),
Token(name='declaration_set_start', value='{', path='', code=css, location=(2, 7)),
Token(name='whitespace', value=' ', path='', code=css, location=(2, 8)),
Token(name='declaration_name', value='border:', path='', code=css, location=(2, 9)),
Token(name='whitespace', value=' ', path='', code=css, location=(2, 16)),
Token(name='number', value='1', path='', code=css, location=(0, 4)),
Token(name='whitespace', value=' ', path='', code=css, location=(2, 19)),
Token(name='declaration_set_end', value='}', path='', code=css, location=(2, 20))
]
class TestParseLayout: