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from __future__ import annotations
import re
from typing import List
from db.parsers.consitution.legal_models import Proviso
class ProvisoParser:
"""
Legal Proviso Parser
Supports:
Provided that
Provided further that
Provided also that
Provided further also that
"""
# =====================================================
# PROVISO PATTERN
# =====================================================
PROVISO_RE = re.compile(
r"""
(
Provided
(?:
\s+further
)?
(?:
\s+also
)?
\s+that
.*?
)
(?=
Provided
(?:
\s+further
)?
(?:
\s+also
)?
\s+that
|
Explanation
|
Illustration
|
$
)
""",
re.IGNORECASE
| re.DOTALL
| re.VERBOSE
)
# =====================================================
# CLEANER
# =====================================================
def clean_text(
self,
text: str
) -> str:
text = text.strip()
text = re.sub(
r"\s+",
" ",
text
)
return text
# =====================================================
# PARSE PROVISOS
# =====================================================
def parse_provisos(
self,
article_text: str
) -> List[Proviso]:
provisos = []
matches = (
self.PROVISO_RE.findall(
article_text
)
)
for match in matches:
provisos.append(
Proviso(
document="constitution",
text=self.clean_text(
match
)
)
)
return provisos
# =====================================================
# VALIDATION
# =====================================================
def validate_provisos(
self,
provisos: List[Proviso]
) -> List[str]:
errors = []
for i, proviso in enumerate(
provisos
):
if not proviso.text:
errors.append(
f"Empty Proviso {i}"
)
if len(
proviso.text
) < 15:
errors.append(
f"Suspiciously Short "
f"Proviso {i}"
)
return errors
# =========================================================
# EXAMPLE
# =========================================================
if __name__ == "__main__":
sample = """
The State may make laws.
Provided that no citizen
shall be denied access.
Provided further that
Parliament may regulate.
Explanation I.—
This provision applies...
"""
parser = ProvisoParser()
provisos = (
parser.parse_provisos(
sample
)
)
print(
f"Found "
f"{len(provisos)} "
f"provisos"
)
for p in provisos:
print()
print(p.text)
print(
parser.validate_provisos(
provisos
)
)
|