Spaces:
Sleeping
Sleeping
File size: 5,387 Bytes
53def98 | 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 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | """Context resolution layer: enriches user input before planning.
Handles day abbreviations (e.g. 'F' -> 'friday') and topic-switch detection.
When the user asks a standalone new question, we strip topic/subject so the
planner routes on the new intent instead of carrying over old context.
"""
from __future__ import annotations
import re
from dataclasses import dataclass, replace
from datetime import datetime, timedelta
from typing import Any, Dict, Optional
from zoneinfo import ZoneInfo
from .actions import PlannerContext
CHICAGO_TZ = ZoneInfo("America/Chicago")
DAY_ABBREVIATIONS: Dict[str, str] = {
"m": "monday",
"mon": "monday",
"monday": "monday",
"t": "tuesday",
"tu": "tuesday",
"tue": "tuesday",
"tues": "tuesday",
"tuesday": "tuesday",
"w": "wednesday",
"wed": "wednesday",
"wednesday": "wednesday",
"r": "thursday",
"th": "thursday",
"thu": "thursday",
"thur": "thursday",
"thurs": "thursday",
"thursday": "thursday",
"f": "friday",
"fri": "friday",
"friday": "friday",
"sa": "saturday",
"sat": "saturday",
"saturday": "saturday",
"su": "sunday",
"sun": "sunday",
"sunday": "sunday",
}
AFFIRMATIONS = frozenset({
"yes", "yes please", "yes, please", "yeah", "yep", "sure", "ok", "okay",
"please", "that would be great", "sounds good", "go ahead", "do it",
"please do", "absolutely", "certainly",
})
def is_affirmation(text: str) -> bool:
if not text or not isinstance(text, str):
return False
normalized = " ".join(text.strip().lower().split())
return normalized in AFFIRMATIONS
@dataclass
class ResolvedInput:
"""Output of context resolution: possibly rewritten question + optional day."""
question: str
resolved_day: Optional[str] = None
def expand_day_abbreviation(day: str) -> Optional[str]:
"""Map day abbreviation to full day name. Returns None if not a day token."""
if not day or not isinstance(day, str):
return None
key = day.strip().lower()
return DAY_ABBREVIATIONS.get(key)
def resolve_relative_day(day: str) -> Optional[str]:
"""Resolve 'today' or 'tomorrow' to the actual weekday name."""
if not day or not isinstance(day, str):
return None
key = day.strip().lower()
if key == "today":
return datetime.now(CHICAGO_TZ).strftime("%A").lower()
if key == "tomorrow":
tomorrow = (datetime.now(CHICAGO_TZ).date() + timedelta(days=1))
return tomorrow.strftime("%A").lower()
return None
def resolve_day_in_question(question: str) -> tuple[str, Optional[str]]:
"""
If the question contains a standalone day token (e.g. 'F', 'Friday', 'Mon', 'today', 'tomorrow'),
expand it and return (rewritten_question, full_day_name).
Otherwise return (question, None).
"""
words = question.strip().lower().split()
for i, w in enumerate(words):
expanded = DAY_ABBREVIATIONS.get(w)
if expanded:
words[i] = expanded
return (" ".join(words), expanded)
resolved = resolve_relative_day(w)
if resolved:
words[i] = resolved
return (" ".join(words), resolved)
return (question, None)
def resolve(question: str, context: Any = None) -> ResolvedInput:
"""
Run context resolution on the user question.
Returns ResolvedInput with possibly rewritten question and flags.
"""
q = (question or "").strip()
if not q:
return ResolvedInput(question=q)
resolved_day = None
new_q, resolved_day = resolve_day_in_question(q)
return ResolvedInput(question=new_q, resolved_day=resolved_day)
_COURSE_PATTERN = re.compile(r"\b(?:cs|CS)\s*\d{3}[a-zA-Z]?(?:\s*[/-]\s*\d{3})?\b", re.IGNORECASE)
_OFFICE_HOURS_PATTERN = re.compile(
r"\b(?:office\s*hours?|office\s*hrs?|oh)\b",
re.IGNORECASE,
)
_PERSON_QUESTION_PATTERN = re.compile(
r"\b(?:what\s+does?|who\s+is|tell\s+me\s+about|find|where\s+is)\s+",
re.IGNORECASE,
)
_PRONOUN_FOLLOWUP = re.compile(
r"\b(his|her|their|him|he|she|them|any\s+other|more\s+about|what\s+about)\b",
re.IGNORECASE,
)
def strip_context_on_topic_switch(
question: str, context: PlannerContext
) -> PlannerContext:
"""If the question is a standalone new question, return stripped context; else return original."""
if not context or not getattr(context, "topic", None):
return context
q = (question or "").strip().lower()
if len(q) < 4:
return context
topic = getattr(context, "topic", None)
if _PRONOUN_FOLLOWUP.search(q):
return context
has_office_hours = bool(_OFFICE_HOURS_PATTERN.search(q))
has_course = bool(_COURSE_PATTERN.search(q))
has_day = any(
d in q
for d in ("today", "tomorrow", "monday", "tuesday", "wednesday", "thursday", "friday")
)
if has_office_hours and (has_course or has_day) and topic in ("professor", "student"):
return replace(
context,
topic=None,
subject=None,
last_class=None,
last_subject=None,
)
if _PERSON_QUESTION_PATTERN.search(q) and topic == "office_hours":
return replace(
context,
topic=None,
subject=None,
last_class=None,
last_subject=None,
)
return context
|