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6.99 kB
| # SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. | |
| # SPDX-License-Identifier: Apache-2.0 | |
| from dataclasses import dataclass | |
| from typing import Callable, Literal, Optional, Union, cast | |
| from robolab.core.task.subtask_utils import normalize_conditions_scores, sanitize_subtask_conditions | |
| from robolab.core.utils.function_loader import func_as_str | |
| class Subtask: | |
| """ | |
| A self-documenting container for a group of parallel conditions. | |
| This dataclass encapsulates conditions that execute in parallel across multiple objects, | |
| along with the completion logic and scoring information. It provides type safety and | |
| clarity when defining task structures. | |
| Attributes: | |
| conditions: Can be one of the following formats: | |
| 1. conditions = func ---- Single condition (atomic subtask) | |
| 2. conditions = [func1, func2] ---- list notation, assumed to have the same score, processed as a single group, and is subject to logical ('all', 'any', 'choose'), funcs are evaluated in parallel. | |
| 3. conditions = {func1, func2} ---- set notation, assumed to have the same score, and is subject to logical ('all', 'any', 'choose'). funcs evaluated in parallel. | |
| 4. conditions = [(func1, score), (func2, score)] ---- list of tuples, the scores are specified, and is subject to logical ('all', 'any', 'choose'). funcs evaluated in parallel. | |
| 5. conditions = {(func1, score), (func2, score)} ---- set of tuples, the scores are specified, and is subject to logical ('all', 'any', 'choose'). funcs evaluated in parallel. | |
| If the conditions are provided in the form of a dictionary, then: | |
| - within each group, the conditions are checked sequentially | |
| - between groups, logical is applied | |
| 4. conditions = {group1: func1, group2: func2} | |
| 5. conditions = {group1: [func1, func2], group2: [func3, func4]} ---- groups are subject to logical. funcs are evaluated sequentially, and assumed to have the same score. | |
| 6. conditions = {group1: {func1, func2}, group2: {func3, func4}} ---- set notation. groups are subject to logical. funcs are evaluated sequentially, and assumed to have the same score. | |
| 7. conditions = {group1: {(func1, score), (func2, score)}, group2: {(func3, score), (func4, score)}} ---- set notation. groups are subject to logical. funcs are evaluated sequentially, and the scores are specified. | |
| 8. conditions = {group1: [(func1, score), (func2, score)], group2: [(func3, score), (func4, score)]} ---- list notation. groups are subject to logical. funcs are evaluated sequentially, and the scores are specified. | |
| All conditions will be sanitized to follow the 8th format. | |
| logical: Completion mode determining when this group is considered complete: | |
| - "all": All objects must complete all their conditions (default) | |
| - "any": Success when any single object completes all its conditions | |
| - "choose": Success when exactly k objects complete all their conditions | |
| score: Overall score weight for this subtask group (0.0 to 1.0) | |
| k: Number of objects that must complete when logical="choose" (required for choose mode) | |
| # To check the valid formats for `conditions`, see the docstring of `sanitize_subtask_conditions` in `subtask_utils.py` | |
| """ | |
| conditions: Union[ | |
| Callable, | |
| list[tuple[Callable, float]], | |
| list[Callable], | |
| dict[str, list[tuple[Callable, float]]] | |
| ] | |
| score: float = 1.0 | |
| logical: Literal["all", "any", "choose"] = "all" | |
| K: Optional[int] = None # Required when logical="choose" | |
| name: str = "unnamed_subtask" | |
| def __post_init__(self): | |
| """Validate the subtask group configuration.""" | |
| # Sanitize conditions structure to unified dict format | |
| self.conditions = cast( | |
| dict[str, list[tuple[Callable, float]]], | |
| sanitize_subtask_conditions(self.conditions) | |
| ) | |
| # Normalize the scores of the conditions within each group to sum to 1.0. | |
| self.conditions = normalize_conditions_scores(self.conditions) | |
| # Validate score range | |
| if not (0.0 <= self.score <= 1.0): | |
| raise ValueError(f"score must be between 0.0 and 1.0, got {self.score}") | |
| # Validate logical mode and k parameter | |
| if self.logical == "choose": | |
| if self.K is None: | |
| raise ValueError("Parameter 'K' is required when logical='choose'") | |
| # At this point, type checker knows k is not None | |
| if self.K < 1 or self.K > len(self.conditions): | |
| raise ValueError(f"Invalid K={self.K}: must be between 1 and {len(self.conditions)} (number of objects)") | |
| def print_conditions(self, status: str = " ", verbose: bool = False) -> None: | |
| """Print the conditions in this group.""" | |
| if self.logical == "choose": | |
| print(f"Subtask: '{self.name}', logical='{self.logical}', score='{self.score}', K='{self.K}' {status}") | |
| else: | |
| print(f"Subtask: '{self.name}', logical='{self.logical}', score='{self.score}' {status}") | |
| if not verbose: | |
| return | |
| conditions_dict = cast(dict[str, list[tuple[Callable, float]]], self.conditions) | |
| if len(conditions_dict) > 1: | |
| for i, (group_names, conditions) in enumerate(conditions_dict.items()): | |
| print(f"{i+1}. {group_names}:") | |
| for condition in conditions: | |
| # each subtask is a tuple of (function, score) | |
| print(f" {func_as_str(condition[0])}") | |
| else: | |
| conditions = list(conditions_dict.values())[0] | |
| print(f" {func_as_str(conditions[0][0])}") | |
| def __repr__(self) -> str: | |
| """Provide a clear string representation for debugging.""" | |
| # After __post_init__, conditions is always a dict | |
| conditions_dict = cast(dict[str, list[tuple[Callable, float]]], self.conditions) | |
| group_names = list(conditions_dict.keys()) | |
| if self.logical == "choose": | |
| return f"Subtask(groups={group_names}, logical='{self.logical}', K={self.K}" | |
| return f"Subtask(groups={group_names}, logical='{self.logical}'" | |
| def group_names(self) -> list[str]: | |
| """Get the names of the groups in the subtask.""" | |
| return list(self.conditions.keys()) | |
| def get_group(self, group_name) -> list[tuple[Callable, float]]: | |
| """Get the conditions for a specific group in the subtask.""" | |
| return self.conditions.get(group_name) | |
| ######################################################## | |
| # Validation functions | |
| ######################################################## | |
| def make_subtask_title(obj, action, container=None): | |
| if container: | |
| return f"{obj}_{action}_in_{container}" | |
| else: | |
| return f"{obj}_{action}" | |