microtensor_ctx_compress / harness /adapters /context_compression.py
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from __future__ import annotations
import json
import re
from typing import Any
from harness.adapters.base import Adapter, Verdict, strip_fences
FIELDS = ("summary", "files_touched", "open_tasks", "errors", "decisions")
BUDGET = re.compile(r"within (\d+) tokens")
CHARS_PER_TOKEN = 3.5
def _text(value: Any) -> str:
if isinstance(value, str):
return value.strip()
if isinstance(value, dict):
return "; ".join(f"{key}: {_text(item)}" for key, item in value.items() if _text(item))
if isinstance(value, list):
return "; ".join(_text(item) for item in value if _text(item))
return "" if value is None else str(value)
def normalise(found: dict[str, Any]) -> dict[str, Any]:
summary = _text(found.get("summary"))
extra = [f"{key}: {_text(value)}" for key, value in found.items() if key not in FIELDS and _text(value)]
if extra:
summary = " ".join([summary, *extra]).strip()
shaped: dict[str, Any] = {"summary": summary}
for key in FIELDS[1:]:
value = found.get(key)
entries = value if isinstance(value, list) else ([] if value in (None, "") else [value])
shaped[key] = [entry for entry in (_text(item) for item in entries) if entry]
return shaped
class CompressionAdapter(Adapter):
name = "context_compression"
stop = ["<|im_end|>", "<|endoftext|>", "<|end|>"]
def clean(self, text: str) -> str:
body = strip_fences(text)
start, end = body.find("{"), body.rfind("}")
return body[start : end + 1] if start >= 0 and end > start else body
def verify(self, text: str, task: dict[str, Any], tools_url: str) -> Verdict:
body = self.clean(text)
try:
found = json.loads(body)
except ValueError:
return Verdict(False, body, "the reply is not one JSON object")
if not isinstance(found, dict):
return Verdict(False, body, "the reply is not one JSON object")
if not _text(found.get("summary")):
return Verdict(False, body, "the summary field is missing or empty")
answer = json.dumps(normalise(found), ensure_ascii=False)
budget = BUDGET.search(str(task.get("system") or ""))
if budget and len(answer) / CHARS_PER_TOKEN > int(budget.group(1)):
return Verdict(
False,
answer,
f"the reply is longer than {budget.group(1)} tokens; shorten the summary and the lists",
)
return Verdict(True, answer)