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Coding workflows · Rectangular CSS grid areas
03
A concrete starting point
Validate rectangular named areas in a grid of ASCII identifiers and single-dot empty cells. Check empty input, ragged rows and disconnected names, returning exclusive bounds only when every named area fills its rectangle.
Define the change
Describe the input, expected output and boundaries that must stay intact.
Inspect the work
Review the proposed edits and any commands before relying on their result.
Check the outcome
Compare actual behavior with the expected result. If a check fails, investigate it before applying more changes.
Rectangular CSS grid areas
A concrete starting point
import re
def grid_areas(rows):
if type(rows) is not list or any(type(r) is not str for r in rows):
raise ValueError("grid.rows")
if not rows:
return {}
cells = [r.split() for r in rows]
width = len(cells[0])
if not width or any(len(r) != width for r in cells):
raise ValueError("grid.width")
groups = {}
for y, row in enumerate(cells):
for x, name in enumerate(row):
if name == ".":
continue
if not re.fullmatch(r"[A-Za-z_][A-Za-z0-9_-]*", name):
raise ValueError("grid.name")
groups.setdefault(name, []).append((y, x))
result = {}
for name, points in groups.items():
top, bottom = min(y for y,x in points), max(y for y,x in points)+1
left, right = min(x for y,x in points), max(x for y,x in points)+1
if len(points) != (bottom-top)*(right-left):
raise ValueError("grid.rectangle")
result[name] = (top, bottom, left, right)
return resultThe example is a starting point for a real project, not a claim that generated code is already tested. Adjust paths, dependencies and expected behavior to match your application.