File size: 1,595 Bytes
358dd8b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | from dataclasses import dataclass
@dataclass(frozen=True)
class SplitSnippet:
header: str
body: str
header_line_count: int
def split_snippet(code: str) -> SplitSnippet:
"""
Splits a code snippet into a header (imports) and body.
- Header: all lines at the top that are 'import ...' or blank before the first non-import line.
If any import starts with 'import Mathlib', include a single 'import Mathlib' at the top of the header.
Other imports follow in their original order, without duplicates.
- Body: the rest of the code starting from the first non-import/non-blank line.
"""
lines = code.splitlines()
# Separate header from body
i = 0
while i < len(lines) and (
lines[i].strip() == "" or lines[i].strip().startswith("import ")
):
i += 1
header_lines = [x.strip() for x in lines[:i]]
body = "\n".join(lines[i:])
# Process imports in header
import_lines = [line for line in header_lines if line.startswith("import ")]
imports: list[str] = []
seen: set[str] = set()
has_mathlib = False
for line in import_lines:
if line.startswith("import Mathlib"):
has_mathlib = True
else:
if line not in seen:
seen.add(line)
imports.append(line)
# Build final header
result_header: list[str] = []
if has_mathlib:
result_header.append("import Mathlib")
result_header.extend(imports)
header = "\n".join(result_header)
return SplitSnippet(header=header, body=body, header_line_count=i)
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