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"""
Number and unit formatting checker.
Validates:
- Percentage format consistency (no space before %, consistent use of % vs 'percent')
"""
import re
from typing import List
from .base import BaseChecker, CheckResult, CheckSeverity
class NumberChecker(BaseChecker):
"""Check percentage formatting."""
name = "number"
display_name = "Numbers & Units"
description = "Check percentage formatting"
# Percentage patterns
PERCENT_WITH_SPACE = re.compile(r'\d\s+%') # "50 %" is wrong
# Inconsistent percentage usage
PERCENT_WORD = re.compile(r'\d+\s+percent\b', re.IGNORECASE)
PERCENT_SYMBOL = re.compile(r'\d+%')
def check(self, tex_content: str, config: dict = None) -> List[CheckResult]:
results = []
lines = tex_content.split('\n')
# Track percentage style for consistency check
uses_symbol = False
uses_word = False
for line_num, line in enumerate(lines, 1):
# Skip comments using base class method
if self._is_comment_line(line):
continue
# Skip lines that are likely in math/tables
if self._in_special_context(line):
continue
# Skip lines that look like math formulas (contain common math commands)
if re.search(r'\\(frac|sum|prod|int|partial|nabla|approx|neq|leq|geq|log|ln|exp|sin|cos|tan|alpha|beta|gamma|delta|theta|sigma|omega|left|right)', line):
continue
line_content = re.sub(r'(?<!\\)%.*$', '', line)
# Check for space before percent sign
for match in self.PERCENT_WITH_SPACE.finditer(line_content):
results.append(self._create_result(
passed=False,
severity=CheckSeverity.WARNING,
message="Space before percent sign",
line_number=line_num,
suggestion="Remove space: '50%' not '50 %'"
))
# Track percentage style
if self.PERCENT_WORD.search(line_content):
uses_word = True
if self.PERCENT_SYMBOL.search(line_content):
uses_symbol = True
# Check percentage consistency
if uses_word and uses_symbol:
results.append(self._create_result(
passed=False,
severity=CheckSeverity.INFO,
message="Mixed percentage notation: both '%' and 'percent' used",
suggestion="Use consistent notation throughout the paper"
))
return results
def _in_special_context(self, line: str) -> bool:
"""Check if line is in a context where number rules don't apply."""
special_patterns = [
r'\\begin\{(tabular|array|equation|align|gather)',
r'\\includegraphics',
r'\\caption',
r'\\label',
r'\\ref',
r'^\s*&', # Table cell
r'\$.*\$', # Inline math
]
return any(re.search(p, line) for p in special_patterns)
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