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Align task taxonomy and IDs with the updated paper; main evaluation 306
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from __future__ import annotations
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"))
NC_NAME = "task-12.nc"
MAX_BYTES = 1_000_000
MAX_LINES = 12_000
MAX_WORDS_PER_LINE = 40
MAX_SEGMENTS = 20_000
MAX_SAMPLES = 250_000
WORD_RE = re.compile(r"([A-Z])\s*([+-]?(?:\d+(?:\.\d*)?|\.\d+))")
PROGRAM = 2032
TOOLS = {
1: {"diameter": 6.0, "spindle": 7200.0, "feed": 430.0},
2: {"diameter": 6.0, "spindle": 7600.0, "feed": 520.0},
3: {"diameter": 5.0, "spindle": 5000.0, "feed": 180.0},
4: {"diameter": 12.0, "spindle": 9000.0, "feed": 650.0},
}
UPPER_RECTS = ((-37.0, -13.0, -12.0, 12.0), (-18.0, 18.0, -10.0, 10.0))
DEEP_RECT = (-18.0, 18.0, -10.0, 10.0)
HOLES = ((-30.0, -20.0), (-30.0, 20.0), (30.0, -20.0), (30.0, 20.0))
STOCK = (-60.0, 60.0, -40.0, 40.0)
class EvaluationError(ValueError):
pass
@dataclass(frozen=True)
class Point:
x: float
y: float
z: float
@dataclass
class Segment:
start: Point
end: Point
samples: list[Point]
motion: int
cycle: int | None
tool: int | None
spindle: float | None
spindle_direction: int | None
feed: float | None
wcs: str | None
plane17: bool
length_comp: bool
h_offset: int | None
comp: int
d_offset: int | None
line_number: int
@dataclass
class Program:
segments: list[Segment]
selections: list[int]
changes: list[int]
programs: list[int]
terminated: bool
executable_lines: int
def close(a: float, b: float, tol: float) -> bool:
return abs(a - b) <= tol
def distance(a: Point, b: Point) -> float:
return math.dist((a.x, a.y, a.z), (b.x, b.y, b.z))
def dense_line(a: Point, b: Point, spacing: float = 0.7) -> list[Point]:
length = distance(a, b)
if not math.isfinite(length) or length > 1000.0:
raise EvaluationError("invalid or excessive segment length")
count = max(1, int(math.ceil(length / spacing)))
return [
Point(a.x + (b.x - a.x) * i / count, a.y + (b.y - a.y) * i / count, a.z + (b.z - a.z) * i / count)
for i in range(count + 1)
]
def strip_comments(src: str) -> list[str]:
if len(src.encode("utf-8")) > MAX_BYTES:
raise EvaluationError("NC file exceeds evaluator resource limit")
raw_lines = src.upper().splitlines()
if len(raw_lines) > MAX_LINES:
raise EvaluationError("NC line count exceeds evaluator resource limit")
output: list[str] = []
depth = 0
for raw in raw_lines:
clean: list[str] = []
for char in raw:
if char == ";" and depth == 0:
break
if char == "(":
depth += 1
if depth > 8:
raise EvaluationError("excessive nested comment")
elif char == ")":
if depth == 0:
raise EvaluationError("unmatched comment close")
depth -= 1
elif depth == 0:
clean.append(char)
output.append("".join(clean).strip())
if depth:
raise EvaluationError("unterminated comment")
return output
def exact_integer(value: float, label: str, minimum: int = 0, maximum: int = 1_000_000) -> int:
if not math.isfinite(value):
raise EvaluationError(f"non-finite {label}")
integer = round(value)
if abs(value - integer) > 1e-4 or integer < minimum or integer > maximum:
raise EvaluationError(f"invalid integer {label}")
return int(integer)
def arc_points(a: Point, b: Point, i: float, j: float, clockwise: bool) -> list[Point]:
cx, cy = a.x + i, a.y + j
radius = math.hypot(i, j)
if radius <= 1e-6 or radius > 500.0 or not close(math.hypot(b.x - cx, b.y - cy), radius, 0.15):
raise EvaluationError("invalid G17 arc")
start_angle = math.atan2(a.y - cy, a.x - cx)
end_angle = math.atan2(b.y - cy, b.x - cx)
sweep = (start_angle - end_angle) % (2 * math.pi) if clockwise else (end_angle - start_angle) % (2 * math.pi)
if sweep <= 1e-9:
sweep = 2 * math.pi
direction = -1.0 if clockwise else 1.0
count = max(12, int(math.ceil(radius * sweep / 0.7)))
return [
Point(
cx + radius * math.cos(start_angle + direction * sweep * k / count),
cy + radius * math.sin(start_angle + direction * sweep * k / count),
a.z + (b.z - a.z) * k / count,
)
for k in range(count + 1)
]
def parse_program(src: str) -> Program:
units: str | None = None
absolute: bool | None = None
motion: int | None = None
current = Point(0.0, 0.0, 0.0)
pending_tool: int | None = None
active_tool: int | None = None
spindle: float | None = None
spindle_direction: int | None = None
feed: float | None = None
wcs: str | None = None
plane17 = False
length_comp = False
h_offset: int | None = None
comp = 40
d_offset: int | None = None
cycle: int | None = None
cycle_z: float | None = None
cycle_r: float | None = None
terminated = False
executable = 0
previous_sequence: int | None = None
selections: list[int] = []
changes: list[int] = []
programs: list[int] = []
segments: list[Segment] = []
sample_count = 0
for physical_line, line in enumerate(strip_comments(src), start=1):
if not line or line == "%":
continue
if any(char in line for char in "#[]="):
raise EvaluationError("macros and expressions are unsupported")
found = WORD_RE.findall(line)
if not found or len(found) > MAX_WORDS_PER_LINE or re.sub(r"[\s/]+", "", WORD_RE.sub("", line)):
raise EvaluationError("unknown executable text")
if terminated:
raise EvaluationError("executable code after program termination")
executable += 1
grouped: dict[str, list[float]] = {}
for letter, token in found:
value = float(token)
if not math.isfinite(value) or abs(value) > 10_000_000:
raise EvaluationError("non-finite or excessive numeric word")
grouped.setdefault(letter, []).append(value)
if set(grouped) - set("NOGMTSFHDPQXYZIJR"):
raise EvaluationError("unsupported address word")
for letter in "NOTSFHDPQXYZIJR":
if len(grouped.get(letter, [])) > 1:
raise EvaluationError(f"duplicate {letter} address")
if "N" in grouped:
sequence = exact_integer(grouped["N"][0], "sequence")
if previous_sequence is not None and sequence <= previous_sequence:
raise EvaluationError("non-increasing sequence numbers")
previous_sequence = sequence
if "O" in grouped:
if set(grouped) - {"N", "O"}:
raise EvaluationError("program number mixed with executable words")
programs.append(exact_integer(grouped["O"][0], "program", 1, 999999))
continue
gcodes = grouped.get("G", [])
mcodes = [exact_integer(value, "M code", 0, 999) for value in grouped.get("M", [])]
machine_return = False
for value in gcodes:
if close(value, 0.0, 1e-6):
motion = 0
elif close(value, 1.0, 1e-6):
motion = 1
elif close(value, 2.0, 1e-6):
motion = 2
elif close(value, 3.0, 1e-6):
motion = 3
elif close(value, 17.0, 1e-6):
plane17 = True
elif close(value, 20.0, 1e-6):
units = "inch"
elif close(value, 21.0, 1e-6):
units = "mm"
elif close(value, 28.0, 1e-6):
machine_return = True
elif close(value, 40.0, 1e-6):
comp, d_offset = 40, None
elif close(value, 41.0, 1e-6):
comp = 41
elif close(value, 42.0, 1e-6):
comp = 42
elif close(value, 43.0, 1e-6):
length_comp = True
elif close(value, 49.0, 1e-6):
length_comp, h_offset = False, None
elif close(value, 54.0, 1e-6):
wcs = "G54"
elif any(close(value, code, 1e-6) for code in (55.0, 56.0, 57.0, 58.0, 59.0, 54.1)):
raise EvaluationError("only G54 is valid for this part")
elif close(value, 80.0, 1e-6):
cycle = None
elif any(close(value, code, 1e-6) for code in (81.0, 82.0, 83.0)):
cycle = int(round(value))
elif close(value, 90.0, 1e-6):
absolute = True
elif close(value, 91.0, 1e-6):
absolute = False
elif any(close(value, code, 1e-6) for code in (94.0, 98.0, 99.0)):
pass
else:
raise EvaluationError(f"unsupported G code {value:g}")
for code in mcodes:
if code not in {2, 3, 4, 5, 6, 8, 9, 30}:
raise EvaluationError(f"unsupported M code M{code}")
factor = 25.4 if units == "inch" else 1.0
if "T" in grouped:
pending_tool = exact_integer(grouped["T"][0], "tool", 1, 99)
selections.append(pending_tool)
if "S" in grouped:
spindle = grouped["S"][0]
if spindle <= 0 or spindle > 100_000:
raise EvaluationError("invalid spindle speed")
if "F" in grouped:
feed = grouped["F"][0] * factor
if feed <= 0 or feed > 100_000:
raise EvaluationError("invalid feed")
if "H" in grouped:
h_offset = exact_integer(grouped["H"][0], "H offset", 1, 999)
if "D" in grouped:
d_offset = exact_integer(grouped["D"][0], "D offset", 1, 999)
if "Q" in grouped and (cycle != 83 or grouped["Q"][0] * factor <= 0):
raise EvaluationError("Q is only valid for positive G83 pecking")
if 6 in mcodes:
if pending_tool is None:
raise EvaluationError("M6 without an exact T word")
active_tool = pending_tool
changes.append(active_tool)
length_comp, h_offset, comp, d_offset = False, None, 40, None
if 3 in mcodes:
spindle_direction = 3
if 4 in mcodes:
spindle_direction = 4
if 5 in mcodes:
spindle_direction = None
if 2 in mcodes or 30 in mcodes:
terminated = True
coordinate_letters = set(grouped) & {"X", "Y", "Z"}
if coordinate_letters and absolute is None:
raise EvaluationError("coordinate motion before G90/G91")
if (coordinate_letters or "F" in grouped or "Q" in grouped or "R" in grouped) and units is None:
raise EvaluationError("dimensional word before G20/G21")
if machine_return:
if absolute is not False or any(abs(grouped[axis][0]) > 1e-9 for axis in coordinate_letters):
raise EvaluationError("only zero-intermediate G91 G28 return is accepted")
continue
def coordinate(axis: str, old: float) -> float:
if axis not in grouped:
return old
value = grouped[axis][0] * factor
return value if absolute else old + value
new = Point(coordinate("X", current.x), coordinate("Y", current.y), coordinate("Z", current.z))
if max(abs(new.x), abs(new.y)) > 250.0 or new.z < -60.0 or new.z > 150.0:
raise EvaluationError("part-coordinate resource/safety envelope exceeded")
if cycle is not None and cycle != 80 and (coordinate_letters or any(close(value, cycle, 1e-6) for value in gcodes)):
if cycle not in {81, 82, 83}:
raise EvaluationError("unsupported drilling cycle")
if "Z" in grouped:
cycle_z = new.z
if "R" in grouped:
raw_r = grouped["R"][0] * factor
cycle_r = raw_r if absolute else current.z + raw_r
if cycle_z is None or cycle_r is None:
raise EvaluationError("incomplete drilling cycle")
top = Point(new.x, new.y, cycle_r)
bottom = Point(new.x, new.y, cycle_z)
sample = dense_line(top, bottom)
segments.append(Segment(top, bottom, sample, 1, cycle, active_tool, spindle, spindle_direction, feed, wcs, plane17, length_comp, h_offset, comp, d_offset, physical_line))
sample_count += len(sample)
current = top
elif coordinate_letters and motion is not None:
if motion in {2, 3}:
if not plane17 or len(grouped.get("I", [])) != 1 or len(grouped.get("J", [])) != 1:
raise EvaluationError("G2/G3 requires G17 and one I/J pair")
sample = arc_points(current, new, grouped["I"][0] * factor, grouped["J"][0] * factor, motion == 2)
else:
if "I" in grouped or "J" in grouped:
raise EvaluationError("I/J supplied outside an arc")
sample = dense_line(current, new)
segments.append(Segment(current, new, sample, motion, None, active_tool, spindle, spindle_direction, feed, wcs, plane17, length_comp, h_offset, comp, d_offset, physical_line))
sample_count += len(sample)
current = new
if len(segments) > MAX_SEGMENTS or sample_count > MAX_SAMPLES:
raise EvaluationError("toolpath sampling resource limit exceeded")
return Program(segments, selections, changes, programs, terminated, executable)
def point_in_rect(x: float, y: float, rect: tuple[float, float, float, float], tolerance: float = 0.0) -> bool:
xmin, xmax, ymin, ymax = rect
return xmin - tolerance <= x <= xmax + tolerance and ymin - tolerance <= y <= ymax + tolerance
def point_in_upper(x: float, y: float, tolerance: float = 0.0) -> bool:
return any(point_in_rect(x, y, rect, tolerance) for rect in UPPER_RECTS)
def disk_inside_region(x: float, y: float, radius: float, region, tolerance: float = 0.18) -> bool:
for index in range(32):
angle = 2.0 * math.pi * index / 32.0
px, py = x + radius * math.cos(angle), y + radius * math.sin(angle)
if not region(px, py, tolerance):
return False
return region(x, y, tolerance)
def distance_to_stock(x: float, y: float) -> float:
xmin, xmax, ymin, ymax = STOCK
return math.hypot(max(xmin - x, 0.0, x - xmax), max(ymin - y, 0.0, y - ymax))
def segment_xy_length(segment: Segment) -> float:
return math.hypot(segment.end.x - segment.start.x, segment.end.y - segment.start.y)
def cutting_state(segment: Segment, tool: int) -> None:
spec = TOOLS[tool]
if (
segment.tool != tool
or segment.spindle_direction != 3
or segment.spindle is None
or not close(segment.spindle, spec["spindle"], 0.5)
or segment.feed is None
or segment.feed <= 0
or segment.wcs != "G54"
or not segment.length_comp
or segment.h_offset != tool
):
raise EvaluationError(f"invalid T{tool} WCS/H/S/cutting state")
def primary_feed(segment: Segment, tool: int) -> bool:
return segment.feed is not None and close(segment.feed, TOOLS[tool]["feed"], 0.75)
def accessible_grid(rects: tuple[tuple[float, float, float, float], ...], radius: float, region, step: float = 1.5) -> list[tuple[float, float]]:
xmin = min(rect[0] for rect in rects)
xmax = max(rect[1] for rect in rects)
ymin = min(rect[2] for rect in rects)
ymax = max(rect[3] for rect in rects)
points: list[tuple[float, float]] = []
x = xmin
while x <= xmax + 1e-9:
y = ymin
while y <= ymax + 1e-9:
if disk_inside_region(x, y, radius, region):
points.append((x, y))
y += step
x += step
return points
def covered(path: list[Point], targets: list[tuple[float, float]], tolerance: float) -> bool:
return bool(path) and all(any(math.hypot(point.x - x, point.y - y) <= tolerance for point in path) for x, y in targets)
def validate_upper(program: Program) -> None:
radius = TOOLS[1]["diameter"] / 2.0
bottom_path: list[Point] = []
levels: set[float] = set()
for segment in [value for value in program.segments if value.tool == 1]:
if min(point.z for point in segment.samples) < 0.05:
if segment.motion in {1, 2, 3}:
cutting_state(segment, 1)
for point in segment.samples:
if point.z < -10.15:
raise EvaluationError("T1 cuts below the upper-pocket floor")
if point.z < 0.05 and not disk_inside_region(point.x, point.y, radius, point_in_upper):
raise EvaluationError("T1 leaves the upper irregular pocket")
if segment.motion in {1, 2, 3} and segment_xy_length(segment) > 0.05 and min(segment.start.z, segment.end.z) <= 0.0:
if not primary_feed(segment, 1) or not segment.plane17:
raise EvaluationError("T1 primary cutting feed/plane mismatch")
if abs(segment.start.z - segment.end.z) <= 0.15:
levels.add(round((segment.start.z + segment.end.z) / 2.0, 1))
if all(abs(point.z + 10.0) <= 0.14 for point in segment.samples):
bottom_path.extend(segment.samples)
if len(levels) < 4 or min(levels) > -9.9:
raise EvaluationError("T1 lacks safe multi-depth cutting to Z-10")
grid = accessible_grid(UPPER_RECTS, radius, point_in_upper)
if not covered(bottom_path, grid, 2.5):
raise EvaluationError("upper irregular pocket bottom is under-cleared")
def validate_deep_step(program: Program) -> None:
radius = TOOLS[2]["diameter"] / 2.0
region = lambda x, y, tolerance=0.0: point_in_rect(x, y, DEEP_RECT, tolerance)
bottom_path: list[Point] = []
levels: set[float] = set()
for segment in [value for value in program.segments if value.tool == 2]:
if min(point.z for point in segment.samples) < -10.0:
if segment.motion in {1, 2, 3}:
cutting_state(segment, 2)
for point in segment.samples:
if point.z < -11.15:
raise EvaluationError("T2 cuts below the deep-step floor")
if point.z < -10.0 and not disk_inside_region(point.x, point.y, radius, region):
raise EvaluationError("T2 leaves the central deep-step boundary")
elif min(point.z for point in segment.samples) < 0.05:
for point in segment.samples:
if point.z < 0.05 and not disk_inside_region(point.x, point.y, radius, point_in_upper):
raise EvaluationError("T2 rapid/feed motion leaves the previously cleared upper pocket")
if segment.motion in {1, 2, 3} and segment_xy_length(segment) > 0.05 and min(segment.start.z, segment.end.z) < -10.35:
if not primary_feed(segment, 2) or not segment.plane17:
raise EvaluationError("T2 primary cutting feed/plane mismatch")
if abs(segment.start.z - segment.end.z) <= 0.15:
levels.add(round((segment.start.z + segment.end.z) / 2.0, 2))
if all(abs(point.z + 11.0) <= 0.14 for point in segment.samples):
bottom_path.extend(segment.samples)
if len(levels) < 2 or min(levels) > -10.9:
raise EvaluationError("T2 lacks the Z-11 central deep step")
grid = accessible_grid((DEEP_RECT,), radius, region)
if not covered(bottom_path, grid, 1.9):
raise EvaluationError("central deep-step bottom is under-cleared")
def validate_drilling(program: Program) -> None:
locations: list[tuple[float, float]] = []
drill_segments = [value for value in program.segments if value.tool == 3]
if not drill_segments:
raise EvaluationError("no T3 drilling segments")
for segment in drill_segments:
if segment.cycle not in {81, 82, 83} or segment_xy_length(segment) > 0.05:
if min(point.z for point in segment.samples) < 0.05:
raise EvaluationError("T3 contains non-drilling stock motion")
continue
cutting_state(segment, 3)
if not primary_feed(segment, 3):
raise EvaluationError("T3 drilling feed mismatch")
if segment.end.z > -18.2 or segment.end.z < -22.0:
raise EvaluationError("T3 hole is shallow or excessively deep")
nearest = min(HOLES, key=lambda value: math.hypot(segment.end.x - value[0], segment.end.y - value[1]))
if math.hypot(segment.end.x - nearest[0], segment.end.y - nearest[1]) > 0.35:
raise EvaluationError("unexpected T3 hole location")
locations.append(nearest)
if set(locations) != set(HOLES):
raise EvaluationError("four D5 through-hole locations are incomplete")
def validate_contour(program: Program) -> None:
radius = TOOLS[4]["diameter"] / 2.0
levels: set[float] = set()
full_depth_path: list[Point] = []
full_depth_length = 0.0
for segment in [value for value in program.segments if value.tool == 4]:
if min(point.z for point in segment.samples) < 0.05:
if segment.motion in {1, 2, 3}:
cutting_state(segment, 4)
for point in segment.samples:
if point.z < -18.15:
raise EvaluationError("T4 cuts below the part bottom")
if point.z < 0.05 and distance_to_stock(point.x, point.y) < radius - 0.18:
raise EvaluationError("T4 enters or crosses the finished part")
if segment.motion in {1, 2, 3} and segment_xy_length(segment) > 0.05 and min(segment.start.z, segment.end.z) <= -0.1:
if abs(segment.start.z - segment.end.z) <= 0.15:
levels.add(round((segment.start.z + segment.end.z) / 2.0, 1))
if all(abs(point.z + 18.0) <= 0.14 for point in segment.samples) and primary_feed(segment, 4):
if segment.comp in {41, 42} and segment.d_offset != 24:
raise EvaluationError("unexpected native contour compensation register")
full_depth_path.extend(segment.samples)
full_depth_length += distance(segment.start, segment.end)
if len(levels) < 3 or min(levels) > -17.9:
raise EvaluationError("T4 lacks a multi-depth full contour")
targets: list[tuple[float, float]] = []
for index in range(93):
y = -46.0 + index
targets.extend(((-66.0, y), (66.0, y)))
for index in range(133):
x = -66.0 + index
targets.extend(((x, -46.0), (x, 46.0)))
if not covered(full_depth_path, targets, 0.85) or not 430.0 <= full_depth_length <= 520.0:
raise EvaluationError("T4 full-depth outside contour is incomplete")
def validate_program(program: Program) -> None:
if not program.terminated:
raise EvaluationError("NC program is not terminated")
if program.programs != [PROGRAM]:
raise EvaluationError("wrong exact O-number")
def first_occurrence_order(values: list[int]) -> list[int]:
seen: set[int] = set()
order: list[int] = []
for value in values:
if value not in seen:
seen.add(value)
order.append(value)
return order
if first_occurrence_order(program.selections) != [1, 2, 3, 4]:
raise EvaluationError("first tool-selection order must be T1-T4")
if first_occurrence_order(program.changes) != [1, 2, 3, 4]:
raise EvaluationError("first effective tool-change order must be T1-T4")
for segment in program.segments:
if segment.motion in {1, 2, 3} and min(point.z for point in segment.samples) < 0.05:
if segment.tool not in TOOLS:
raise EvaluationError("stock motion without an allowed tool")
cutting_state(segment, int(segment.tool))
validate_upper(program)
validate_deep_step(program)
validate_drilling(program)
validate_contour(program)
def evaluate_text(src: str) -> bool:
try:
validate_program(parse_program(src))
return True
except (EvaluationError, ValueError, OverflowError, MemoryError):
return False
def main() -> bool:
path = TARGET / NC_NAME
if not path.is_file() or path.stat().st_size <= 0 or path.stat().st_size > MAX_BYTES:
return False
return evaluate_text(path.read_text(encoding="utf-8", errors="strict"))
if __name__ == "__main__":
try:
ok = main()
except Exception:
ok = False
print("True" if ok else "False")
raise SystemExit(0)