File size: 8,761 Bytes
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import math
import os
import re
from dataclasses import dataclass
from pathlib import Path
TARGET = Path(os.environ.get("EVAL_TARGET_DIR", r"C:\Users\User\Desktop"))
OUTPUT = TARGET / "task-11.nc"
NUMBER = r"[+-]?(?:\d+(?:\.\d*)?|\.\d+)"
TOKEN_RE = re.compile(rf"([A-Z])\s*({NUMBER})", re.IGNORECASE)
EXPECTED_TOOLS = [1, 2, 3, 4]
EXPECTED_SPINDLES = {1: 1800.0, 2: 2200.0, 3: 1500.0, 4: 3000.0}
EXPECTED_FEEDS = {1: (0.409, 99), 2: (0.409, 99), 3: (0.064, 99), 4: (100.0, 98)}
@dataclass
class Move:
tool: int
motion: int
start_x: float | None
start_z: float | None
end_x: float | None
end_z: float | None
feed: float | None
feed_mode: int
@dataclass
class Program:
tools: list[int]
spindles: dict[int, list[float]]
moves: list[Move]
segment_feeds: dict[int, list[tuple[float, int]]]
spindle_on: set[int]
def strip_comments(raw: str) -> str:
source = raw.replace("\x00", "")
previous = None
while previous != source:
previous = source
source = re.sub(r"\([^()]*\)", " ", source)
return "\n".join(line.split(";", 1)[0] for line in source.splitlines()).upper()
def words(line: str) -> list[tuple[str, str]]:
return [(match.group(1).upper(), match.group(2)) for match in TOKEN_RE.finditer(line)]
def g_codes(tokens: list[tuple[str, str]]) -> set[int]:
result = set()
for letter, raw in tokens:
if letter != "G":
continue
value = float(raw)
if abs(value - round(value)) <= 1e-9:
result.add(int(round(value)))
return result
def tool_number(raw: str) -> int | None:
if not re.fullmatch(r"\+?\d+(?:\.0*)?", raw):
return None
digits = raw.lstrip("+").split(".", 1)[0]
number = int(digits)
if len(digits) >= 3 or number >= 100:
number //= 100
return number
def close(actual: float, expected: float, absolute: float = 1.0) -> bool:
return abs(actual - expected) <= max(absolute, abs(expected) * 0.01)
def cluster(values: list[float], gap: float) -> list[list[float]]:
groups: list[list[float]] = []
for value in sorted(values):
if not groups or value - groups[-1][-1] > gap:
groups.append([value])
else:
groups[-1].append(value)
return groups
def parse(source: str) -> Program | None:
lines = source.splitlines()
end_index = None
for index, line in enumerate(lines):
if any(letter == "M" and abs(float(raw) - 30.0) <= 1e-9 for letter, raw in words(line)):
end_index = index
break
if end_index is None:
return None
trailing = "\n".join(lines[end_index + 1 :])
trailing = re.sub(r"(?m)^\s*N\d+\s*$", "", trailing).replace("%", "").strip()
if trailing:
return None
unit_scale = 1.0
absolute = True
feed_mode = 98
motion = 0
current_tool: int | None = None
x: float | None = None
z: float | None = None
feed: float | None = None
tools: list[int] = []
spindles = {tool: [] for tool in EXPECTED_TOOLS}
segment_feeds = {tool: [] for tool in EXPECTED_TOOLS}
spindle_on: set[int] = set()
moves: list[Move] = []
for line in lines[: end_index + 1]:
tokens = words(line)
if not tokens:
continue
codes = g_codes(tokens)
if 20 in codes:
unit_scale = 25.4
if 21 in codes:
unit_scale = 1.0
if 90 in codes:
absolute = True
if 91 in codes:
absolute = False
if 98 in codes:
feed_mode = 98
if 99 in codes:
feed_mode = 99
for code in (0, 1, 2, 3, 81, 82, 83):
if code in codes:
motion = code
for letter, raw in tokens:
if letter != "T":
continue
parsed_tool = tool_number(raw)
if parsed_tool not in EXPECTED_TOOLS:
return None
current_tool = parsed_tool
if not tools or tools[-1] != parsed_tool:
tools.append(parsed_tool)
if current_tool is None:
continue
for letter, raw in tokens:
value = float(raw)
if letter == "S":
spindles[current_tool].append(value)
elif letter == "F":
feed = value * unit_scale
segment_feeds[current_tool].append((feed, feed_mode))
elif letter == "M" and int(round(value)) in (3, 4):
spindle_on.add(current_tool)
x_words = [float(raw) * unit_scale for letter, raw in tokens if letter == "X"]
z_words = [float(raw) * unit_scale for letter, raw in tokens if letter == "Z"]
if not x_words and not z_words:
continue
start_x, start_z = x, z
if x_words:
x = x_words[-1] if absolute or x is None else x + x_words[-1]
if z_words:
z = z_words[-1] if absolute or z is None else z + z_words[-1]
if motion in (0, 1, 2, 3, 81, 82, 83):
moves.append(Move(current_tool, motion, start_x, start_z, x, z, feed, feed_mode))
return Program(tools, spindles, moves, segment_feeds, spindle_on)
def cutting(program: Program, tool: int) -> list[Move]:
return [move for move in program.moves if move.tool == tool and move.motion in (1, 2, 3, 81, 82, 83)]
def valid_feed(program: Program, tool: int) -> bool:
expected, expected_mode = EXPECTED_FEEDS[tool]
feeds = [(feed, mode) for feed, mode in program.segment_feeds[tool] if feed > 0 and math.isfinite(feed)]
tolerance = max(0.0005, abs(expected) * 0.005)
return any(mode == expected_mode and abs(feed - expected) <= tolerance for feed, mode in feeds)
def axial_profile(moves: list[Move], minimum_moves: int) -> bool:
positioned = [move for move in moves if move.end_x is not None and move.end_z is not None]
if len(positioned) < minimum_moves:
return False
z_values = [move.end_z for move in positioned]
x_values = [move.end_x for move in positioned]
if max(z_values) - min(z_values) < 100.0 or min(z_values) > -100.0 or max(z_values) > 10.0:
return False
distinct_x = {round(value, 1) for value in x_values if 5.0 <= value <= 80.0}
return len(distinct_x) >= 3
def valid_grooves(moves: list[Move]) -> bool:
plunges = []
for move in moves:
if move.motion != 1 or None in (move.start_x, move.start_z, move.end_x, move.end_z):
continue
if abs(move.end_z - move.start_z) <= 0.75 and move.start_x - move.end_x >= 4.0:
plunges.append(move)
if len(plunges) < 4:
return False
groups = cluster([move.end_z for move in plunges], gap=8.0)
if len(groups) != 2 or any(len(group) < 2 or max(group) - min(group) > 6.0 for group in groups):
return False
centers = [sum(group) / len(group) for group in groups]
if not 20.0 <= centers[1] - centers[0] <= 80.0:
return False
return all(-160.0 <= center <= 5.0 for center in centers)
def valid_center_drill(moves: list[Move]) -> bool:
for move in moves:
if move.motion not in (1, 81, 82, 83) or move.end_x is None or move.end_z is None:
continue
start_z = move.start_z if move.start_z is not None else 0.0
if abs(move.end_x) <= 0.25 and move.end_z <= -0.5 and start_z - move.end_z >= 1.0:
return True
return False
def check(path: Path) -> bool:
if not path.is_file() or not 300 <= path.stat().st_size <= 2_000_000:
return False
raw = path.read_text(encoding="utf-8", errors="ignore")
if "\x00" in raw:
return False
program = parse(strip_comments(raw))
if program is None or program.tools != EXPECTED_TOOLS or program.spindle_on != set(EXPECTED_TOOLS):
return False
for tool, expected in EXPECTED_SPINDLES.items():
if not any(close(value, expected, 1.0) for value in program.spindles[tool]):
return False
if not valid_feed(program, tool):
return False
rough = cutting(program, 1)
finish = cutting(program, 2)
grooves = cutting(program, 3)
center = cutting(program, 4)
if not axial_profile(rough, 12) or not axial_profile(finish, 6):
return False
if not valid_grooves(grooves) or not valid_center_drill(center):
return False
if sum(1 for move in program.moves if move.motion in (1, 2, 3, 81, 82, 83)) < 30:
return False
return True
def main() -> bool:
return check(OUTPUT)
if __name__ == "__main__":
try:
result = main()
except Exception:
result = False
print("True" if result else "False")
raise SystemExit(0)
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