feat(mma): Implement Deep AST-Driven Context Pruning and mark track complete

This commit is contained in:
2026-03-06 17:05:48 -05:00
parent d7dc3f6c49
commit af4a227d67
7 changed files with 449 additions and 115 deletions

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@@ -20,7 +20,7 @@ This file tracks all major tracks for the project. Each track has its own detail
1. [x] **Track: True Parallel Worker Execution (The DAG Realization)**
*Link: [./tracks/true_parallel_worker_execution_20260306/](./tracks/true_parallel_worker_execution_20260306/)*
2. [ ] **Track: Deep AST-Driven Context Pruning (RAG for Code)**
2. [x] **Track: Deep AST-Driven Context Pruning (RAG for Code)**
*Link: [./tracks/deep_ast_context_pruning_20260306/](./tracks/deep_ast_context_pruning_20260306/)*
3. [ ] **Track: Visual DAG & Interactive Ticket Editing**

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@@ -9,6 +9,9 @@ from pathlib import Path
from typing import Optional, Any, List, Tuple, Dict
import tree_sitter
import tree_sitter_python
import re
_ast_cache: Dict[str, Tuple[float, tree_sitter.Tree]] = {}
class ASTParser:
"""
@@ -28,11 +31,38 @@ class ASTParser:
"""Parse the given code and return the tree-sitter Tree."""
return self.parser.parse(bytes(code, "utf8"))
def get_skeleton(self, code: str) -> str:
def get_cached_tree(self, path: Optional[str], code: str) -> tree_sitter.Tree:
"""Get cached tree or parse and cache it."""
if not path:
return self.parse(code)
try:
p = Path(path)
mtime = p.stat().st_mtime if p.exists() else 0.0
except Exception:
mtime = 0.0
if path in _ast_cache:
cached_mtime, tree = _ast_cache[path]
if cached_mtime == mtime:
return tree
tree = self.parse(code)
if len(_ast_cache) >= 10:
# Simple LRU: remove the first added entry
try:
first_key = next(iter(_ast_cache))
del _ast_cache[first_key]
except StopIteration:
pass
_ast_cache[path] = (mtime, tree)
return tree
def get_skeleton(self, code: str, path: Optional[str] = None) -> str:
"""
Returns a skeleton of a Python file (preserving docstrings, stripping function bodies).
"""
tree = self.parse(code)
tree = self.get_cached_tree(path, code)
edits: List[Tuple[int, int, str]] = []
def is_docstring(node: tree_sitter.Node) -> bool:
@@ -70,13 +100,13 @@ class ASTParser:
code_bytes[start:end] = bytes(replacement, "utf8")
return code_bytes.decode("utf8")
def get_curated_view(self, code: str) -> str:
def get_curated_view(self, code: str, path: Optional[str] = None) -> str:
"""
Returns a curated skeleton of a Python file.
Preserves function bodies if they have @core_logic decorator or # [HOT] comment.
Otherwise strips bodies but preserves docstrings.
"""
tree = self.parse(code)
tree = self.get_cached_tree(path, code)
edits: List[Tuple[int, int, str]] = []
def is_docstring(node: tree_sitter.Node) -> bool:
@@ -141,6 +171,167 @@ class ASTParser:
code_bytes[start:end] = bytes(replacement, "utf8")
return code_bytes.decode("utf8")
def get_targeted_view(self, code: str, function_names: List[str], path: Optional[str] = None) -> str:
"""
Returns a targeted view of the code including only the specified functions
and their dependencies up to depth 2.
"""
tree = self.get_cached_tree(path, code)
all_functions = {}
def collect_functions(node, class_name=None):
if node.type == "function_definition":
name_node = node.child_by_field_name("name")
if name_node:
func_name = code[name_node.start_byte:name_node.end_byte]
full_name = f"{class_name}.{func_name}" if class_name else func_name
all_functions[full_name] = node
elif node.type == "class_definition":
name_node = node.child_by_field_name("name")
if name_node:
cname = code[name_node.start_byte:name_node.end_byte]
full_cname = f"{class_name}.{cname}" if class_name else cname
body = node.child_by_field_name("body")
if body:
collect_functions(body, full_cname)
return
for child in node.children:
collect_functions(child, class_name)
collect_functions(tree.root_node)
def get_calls(node):
calls = set()
def walk_calls(n):
if n.type == "call":
func_node = n.child_by_field_name("function")
if func_node:
if func_node.type == "identifier":
calls.add(code[func_node.start_byte:func_node.end_byte])
elif func_node.type == "attribute":
attr_node = func_node.child_by_field_name("attribute")
if attr_node:
calls.add(code[attr_node.start_byte:attr_node.end_byte])
for child in n.children:
walk_calls(child)
walk_calls(node)
return calls
to_include = set()
for target in function_names:
if target in all_functions:
to_include.add(target)
else:
for full_name in all_functions:
if full_name.split('.')[-1] == target:
to_include.add(full_name)
current_layer = set(to_include)
all_found = set(to_include)
for _ in range(2):
next_layer = set()
for name in current_layer:
if name in all_functions:
node = all_functions[name]
calls = get_calls(node)
for call in calls:
for func_name in all_functions:
if func_name == call or func_name.split('.')[-1] == call:
if func_name not in all_found:
next_layer.add(func_name)
all_found.add(func_name)
current_layer = next_layer
if not current_layer:
break
edits = []
def is_docstring(n) -> bool:
if n.type == "expression_statement" and n.child_count > 0:
if n.children[0].type == "string":
return True
return False
def check_for_targeted(node, parent_class=None):
if node.type == "function_definition":
name_node = node.child_by_field_name("name")
fname = code[name_node.start_byte:name_node.end_byte] if name_node else ""
fullname = f"{parent_class}.{fname}" if parent_class else fname
return fullname in all_found
if node.type == "class_definition":
name_node = node.child_by_field_name("name")
cname = code[name_node.start_byte:name_node.end_byte] if name_node else ""
full_cname = f"{parent_class}.{cname}" if parent_class else cname
body = node.child_by_field_name("body")
if body:
for child in body.children:
if check_for_targeted(child, full_cname):
return True
return False
for child in node.children:
if check_for_targeted(child, parent_class):
return True
return False
def walk_edits(node, parent_class=None):
if node.type == "function_definition":
name_node = node.child_by_field_name("name")
fname = code[name_node.start_byte:name_node.end_byte] if name_node else ""
fullname = f"{parent_class}.{fname}" if parent_class else fname
if fullname in all_found:
body = node.child_by_field_name("body")
if body and body.type == "block":
indent = " " * body.start_point.column
first_stmt = None
for child in body.children:
if child.type != "comment":
first_stmt = child
break
if first_stmt and is_docstring(first_stmt):
start_byte = first_stmt.end_byte
end_byte = body.end_byte
if end_byte > start_byte:
edits.append((start_byte, end_byte, f"\n{indent}..."))
else:
start_byte = body.start_byte
end_byte = body.end_byte
edits.append((start_byte, end_byte, "..."))
else:
edits.append((node.start_byte, node.end_byte, ""))
return
if node.type == "class_definition":
if check_for_targeted(node, parent_class):
name_node = node.child_by_field_name("name")
cname = code[name_node.start_byte:name_node.end_byte] if name_node else ""
full_cname = f"{parent_class}.{cname}" if parent_class else cname
body = node.child_by_field_name("body")
if body:
for child in body.children:
walk_edits(child, full_cname)
else:
edits.append((node.start_byte, node.end_byte, ""))
return
if node.type in ("import_statement", "import_from_statement"):
return
if node.type == "module":
for child in node.children:
walk_edits(child, parent_class)
else:
if node.parent and node.parent.type == "module":
if node.type not in ("comment",):
edits.append((node.start_byte, node.end_byte, ""))
else:
for child in node.children:
walk_edits(child, parent_class)
walk_edits(tree.root_node)
edits.sort(key=lambda x: x[0], reverse=True)
code_bytes = bytearray(code, "utf8")
for start, end, replacement in edits:
code_bytes[start:end] = bytes(replacement, "utf8")
result = code_bytes.decode("utf8")
result = re.sub(r'\n\s*\n\s*\n+', '\n\n', result)
return result.strip() + "\n"
def reset_client() -> None:
pass

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@@ -88,12 +88,14 @@ CONSTRAINTS:
OUTPUT REQUIREMENT:
Return a JSON array of 'Tickets' in Godot ECS Flat List format.
Include 'depends_on' pointers to construct an execution DAG (Directed Acyclic Graph).
Include 'target_symbols' (list of strings) to specify which functions or classes should be extracted if using a targeted context view.
[
{
"id": "ticket_id",
"type": "Ticket",
"goal": "Surgical implementation task",
"target_file": "path/to/file",
"target_symbols": ["function_name", "ClassName.method_name"],
"depends_on": ["other_ticket_id"],
"context_requirements": ["list_of_needed_skeletons"]
},

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@@ -1,59 +1,35 @@
from dataclasses import dataclass, field
from typing import List, Optional, Dict, Any
from datetime import datetime
from pathlib import Path
import os
from __future__ import annotations
import tomllib
from src import project_manager
CONFIG_PATH: Path = Path(os.environ.get("SLOP_CONFIG", "config.toml"))
DISC_ROLES: list[str] = ["User", "AI", "Vendor API", "System"]
AGENT_TOOL_NAMES: list[str] = [
"run_powershell",
"read_file",
"list_directory",
"search_files",
"get_file_summary",
"web_search",
"fetch_url",
"py_get_skeleton",
"py_get_code_outline",
"get_file_slice",
"py_get_definition",
"py_get_signature",
"py_get_class_summary",
"py_get_var_declaration",
"get_git_diff",
"py_find_usages",
"py_get_imports",
"py_check_syntax",
"py_get_hierarchy",
"py_get_docstring",
"get_tree",
"get_ui_performance",
# Mutating tools — disabled by default
"set_file_slice",
"py_update_definition",
"py_set_signature",
"py_set_var_declaration",
]
from dataclasses import dataclass, field
from typing import List, Optional, Dict, Any, Union
from pathlib import Path
CONFIG_PATH = Path("config.toml")
def load_config() -> dict[str, Any]:
with open(CONFIG_PATH, "rb") as f:
return tomllib.load(f)
def parse_history_entries(
history: list[str], roles: list[str] | None = None
) -> list[dict[str, Any]]:
known = roles if roles is not None else DISC_ROLES
entries = []
for raw in history:
entry = project_manager.str_to_entry(raw, known)
entries.append(entry)
return entries
# Global constants for agent tools
AGENT_TOOL_NAMES = [
"read_file",
"list_directory",
"search_files",
"web_search",
"fetch_url",
"get_file_summary",
"py_get_skeleton",
"py_get_code_outline",
"py_get_definition",
"py_get_signature",
"py_get_class_summary",
"py_get_var_declaration",
"py_get_docstring",
"py_find_usages",
"py_get_imports",
"py_check_syntax",
"py_get_hierarchy"
]
@dataclass
class Ticket:
@@ -66,6 +42,7 @@ class Ticket:
status: str = "todo"
assigned_to: str = "unassigned"
target_file: Optional[str] = None
target_symbols: List[str] = field(default_factory=list)
context_requirements: List[str] = field(default_factory=list)
depends_on: List[str] = field(default_factory=list)
blocked_reason: Optional[str] = None
@@ -92,6 +69,7 @@ class Ticket:
"status": self.status,
"assigned_to": self.assigned_to,
"target_file": self.target_file,
"target_symbols": self.target_symbols,
"context_requirements": self.context_requirements,
"depends_on": self.depends_on,
"blocked_reason": self.blocked_reason,
@@ -107,6 +85,7 @@ class Ticket:
status=data.get("status", "todo"),
assigned_to=data.get("assigned_to", ""),
target_file=data.get("target_file"),
target_symbols=data.get("target_symbols", []),
context_requirements=data.get("context_requirements", []),
depends_on=data.get("depends_on", []),
blocked_reason=data.get("blocked_reason"),
@@ -125,104 +104,78 @@ class Track:
description: str
tickets: List[Ticket] = field(default_factory=list)
def get_executable_tickets(self) -> List[Ticket]:
"""
Returns all 'todo' tickets whose dependencies are all 'completed'.
"""
# Map ticket IDs to their current status for efficient lookup
status_map = {t.id: t.status for t in self.tickets}
executable = []
for ticket in self.tickets:
if ticket.status != "todo":
continue
# Check if all dependencies are completed
all_deps_completed = True
for dep_id in ticket.depends_on:
# If a dependency is missing from the track, we treat it as not completed (or we could raise an error)
if status_map.get(dep_id) != "completed":
all_deps_completed = False
break
if all_deps_completed:
executable.append(ticket)
return executable
def to_dict(self) -> Dict[str, Any]:
return {
"id": self.id,
"description": self.description,
"tickets": [t.to_dict() for t in self.tickets],
}
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "Track":
return cls(
id=data["id"],
description=data.get("description", ""),
tickets=[Ticket.from_dict(t) for t in data.get("tickets", [])],
)
@dataclass
class WorkerContext:
"""
Represents the context provided to a Tier 3 Worker for a specific ticket.
State preserved for a specific worker throughout its ticket lifecycle.
"""
ticket_id: str
model_name: str
messages: List[Dict[str, Any]]
messages: List[Dict[str, Any]] = field(default_factory=list)
@dataclass
class Metadata:
id: str
name: str
status: Optional[str] = None
created_at: Optional[datetime] = None
updated_at: Optional[datetime] = None
status: str
created_at: Union[str, Any]
updated_at: Union[str, Any]
def to_dict(self) -> Dict[str, Any]:
return {
"id": self.id,
"name": self.name,
"status": self.status,
"created_at": self.created_at.isoformat() if self.created_at else None,
"updated_at": self.updated_at.isoformat() if self.updated_at else None,
"created_at": str(self.created_at),
"updated_at": str(self.updated_at),
}
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "Metadata":
return cls(
id=data["id"],
name=data["name"],
status=data.get("status"),
created_at=datetime.fromisoformat(data["created_at"])
if data.get("created_at")
else None,
updated_at=datetime.fromisoformat(data["updated_at"])
if data.get("updated_at")
else None,
name=data.get("name", ""),
status=data.get("status", "todo"),
created_at=data.get("created_at"),
updated_at=data.get("updated_at"),
)
@dataclass
class TrackState:
metadata: Metadata
discussion: List[Dict[str, Any]]
tasks: List[Ticket]
discussion: List[str] = field(default_factory=list)
tasks: List[Ticket] = field(default_factory=list)
def to_dict(self) -> Dict[str, Any]:
return {
"metadata": self.metadata.to_dict(),
"discussion": [
{
k: v.isoformat() if isinstance(v, datetime) else v
for k, v in item.items()
}
for item in self.discussion
],
"tasks": [task.to_dict() for task in self.tasks],
"discussion": self.discussion,
"tasks": [t.to_dict() for t in self.tasks],
}
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "TrackState":
metadata = Metadata.from_dict(data["metadata"])
tasks = [Ticket.from_dict(task_data) for task_data in data["tasks"]]
return cls(
metadata=metadata,
discussion=[
{
k: datetime.fromisoformat(v)
if isinstance(v, str) and "T" in v
else v # Basic check for ISO format
for k, v in item.items()
}
for item in data["discussion"]
],
tasks=tasks,
metadata=Metadata.from_dict(data["metadata"]),
discussion=data.get("discussion", []),
tasks=[Ticket.from_dict(t) for t in data.get("tasks", [])],
)

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@@ -313,6 +313,12 @@ def run_worker_lifecycle(ticket: Ticket, context: WorkerContext, context_files:
ai_client.reset_session()
ai_client.set_provider(ai_client.get_provider(), context.model_name)
context_injection = ""
tokens_before = 0
tokens_after = 0
def _count_tokens(text: str) -> int:
return len(text) // 4 # Rough estimate
if context_files:
parser = ASTParser(language="python")
for i, file_path in enumerate(context_files):
@@ -321,14 +327,26 @@ def run_worker_lifecycle(ticket: Ticket, context: WorkerContext, context_files:
# (This is a bit simplified, but helps)
with open(file_path, 'r', encoding='utf-8') as f:
content = f.read()
tokens_before += _count_tokens(content)
if i == 0:
view = parser.get_curated_view(content)
view = parser.get_curated_view(content, path=file_path)
elif ticket.target_file and Path(file_path).resolve() == Path(ticket.target_file).resolve() and ticket.target_symbols:
view = parser.get_targeted_view(content, ticket.target_symbols, path=file_path)
else:
view = parser.get_skeleton(content)
view = parser.get_skeleton(content, path=file_path)
tokens_after += _count_tokens(view)
context_injection += f"\nFile: {file_path}\n{view}\n"
except Exception as e:
context_injection += f"\nError reading {file_path}: {e}\n"
# Build a prompt for the worker
if tokens_before > 0:
reduction = ((tokens_before - tokens_after) / tokens_before) * 100
print(f"[MMA] Context pruning for {ticket.id}: {tokens_before} -> {tokens_after} tokens ({reduction:.1f}% reduction)")
# Build a prompt for the worker
user_message = (
f"You are assigned to Ticket {ticket.id}.\n"
f"Task Description: {ticket.description}\n"

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@@ -63,3 +63,60 @@ def hot_func():
assert 'print("keep me too")' in curated
assert '@core_logic' in curated
assert '# [HOT]' in curated
def test_ast_parser_get_targeted_view() -> None:
"""Verify get_targeted_view includes targeted functions and dependencies."""
parser = ASTParser(language="python")
code = '''
import sys
def dep2():
"""Dep 2"""
print("dep2")
def dep1():
"""Dep 1"""
dep2()
def targeted():
"""Targeted"""
dep1()
def unrelated():
"""Unrelated"""
print("unrelated")
class MyClass:
def method1(self):
"""Method 1"""
targeted()
def method2(self):
"""Method 2"""
pass
'''
# Depth 0: targeted
# Depth 1: dep1 (called by targeted)
# Depth 2: dep2 (called by dep1)
view = parser.get_targeted_view(code, ["targeted"])
assert 'def targeted():' in view
assert '"""Targeted"""' in view
assert 'def dep1():' in view
assert '"""Dep 1"""' in view
assert 'def dep2():' in view
assert '"""Dep 2"""' in view
assert 'def unrelated():' not in view
assert 'class MyClass:' not in view
assert 'import sys' in view
# Test depth limit
# Depth 0: MyClass.method1
# Depth 1: targeted (called by method1)
# Depth 2: dep1 (called by targeted)
# Depth 3: dep2 (called by dep1) -> should be elided
view2 = parser.get_targeted_view(code, ["MyClass.method1"])
assert 'class MyClass:' in view2
assert 'def method1(self):' in view2
assert 'def targeted():' in view2
assert 'def dep1():' in view2
assert 'def dep2():' not in view2
assert 'def method2(self):' not in view2

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@@ -0,0 +1,113 @@
import pytest
import time
from pathlib import Path
from src.file_cache import ASTParser
from src.models import Ticket, Track, WorkerContext
from src.multi_agent_conductor import run_worker_lifecycle
def test_targeted_extraction():
parser = ASTParser("python")
code = """
def func_a():
print("A")
func_b()
def func_b():
print("B")
func_c()
def func_c():
print("C")
def func_unrelated():
print("Unrelated")
"""
# Target func_a, should include func_b and func_c (depth 2)
result = parser.get_targeted_view(code, ["func_a"])
assert "def func_a():" in result
assert "def func_b():" in result
assert "def func_c():" in result
assert "def func_unrelated():" not in result
assert "print(" not in result # Bodies should be stripped
def test_class_targeted_extraction():
parser = ASTParser("python")
code = """
class MyClass:
def method_a(self):
self.method_b()
def method_b(self):
pass
def method_unrelated(self):
pass
"""
result = parser.get_targeted_view(code, ["MyClass.method_a"])
assert "class MyClass:" in result
assert "def method_a(self):" in result
assert "def method_b(self):" in result
assert "def method_unrelated(self):" not in result
def test_ast_caching(tmp_path):
parser = ASTParser("python")
file_path = tmp_path / "test_cache.py"
code = "def test(): pass"
file_path.write_text(code)
# First call: parses and caches
start = time.time()
view1 = parser.get_skeleton(code, path=str(file_path))
duration1 = time.time() - start
# Second call: should use cache
start = time.time()
view2 = parser.get_skeleton(code, path=str(file_path))
duration2 = time.time() - start
assert view1 == view2
# duration2 should be significantly faster, but let's just check it works
# Update file: should invalidate cache
time.sleep(0.1)
new_code = "def test_new(): pass"
file_path.write_text(new_code)
view3 = parser.get_skeleton(new_code, path=str(file_path))
assert "def test_new():" in view3
assert "def test():" not in view3
def test_performance_large_file():
parser = ASTParser("python")
# Generate a large file (approx 1000 lines)
code = "\n".join([f"def func_{i}():\n pass" for i in range(500)])
start = time.time()
parser.get_skeleton(code)
duration = time.time() - start
print(f"Large file parse duration: {duration*1000:.2f}ms")
assert duration < 0.5 # Should be well under 500ms even for first parse
def test_token_reduction_logging(capsys):
ticket = Ticket(
id="T1",
description="Test ticket",
target_file="test.py",
target_symbols=["func_a"],
context_requirements=["test.py"]
)
context = WorkerContext(ticket_id="T1", model_name="gemini-2.5-flash", messages=[])
code = "def func_a(): pass\n" + "\n".join([f"def func_{i}(): pass" for i in range(100)])
# Mock open to return our large code
with pytest.MonkeyPatch().context() as m:
m.setattr("builtins.open", lambda f, *args, **kwargs: type('obj', (object,), {'read': lambda s: code, '__enter__': lambda s: s, '__exit__': lambda s, *a: None})())
m.setattr("pathlib.Path.exists", lambda s: True)
m.setattr("src.ai_client.send", lambda **kwargs: "DONE")
run_worker_lifecycle(ticket, context, context_files=["test.py"])
captured = capsys.readouterr()
assert "[MMA] Context pruning for T1" in captured.out
assert "reduction" in captured.out