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feat: support placeholders in patches #114

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Sep 9, 2024
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24 changes: 22 additions & 2 deletions gptme/tools/patch.py
Original file line number Diff line number Diff line change
Expand Up @@ -84,9 +84,29 @@ def apply(codeblock: str, content: str) -> str:

# TODO: maybe allow modified chunk to contain "// ..." to refer to chunks in the original,
# and then replace these with the original chunks?
re_placeholder = re.compile(r"^[ \t]*# \.\.\. ?.*$", re.MULTILINE)
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Another note to add here: this essentially breaks the ability to edit code containing such comments.

if re_placeholder.search(original) or re_placeholder.search(modified):
# raise ValueError("placeholders in modified chunk")
# split them by lines starting with "# ..."
originals = re_placeholder.split(original)
modifieds = re_placeholder.split(modified)
if len(originals) != len(modifieds):
raise ValueError(
"different number of placeholders in original and modified chunks"
f"\n{originals}\n{modifieds}"
)
new = content
for orig, mod in zip(originals, modifieds):
if orig == mod:
continue
new = new.replace(orig, mod)
else:
if original not in content: # pragma: no cover
raise ValueError("original chunk not found in file", original)

# replace the original chunk with the modified chunk
new = content.replace(original, modified)

# replace the original chunk with the modified chunk
new = content.replace(original, modified)
if new == content: # pragma: no cover
raise ValueError("patch did not change the file")

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