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"""PPMCK semantic analyzer: AST -> NoteSequence IR."""
from .ast_nodes import (
DutyStmt,
EnvelopeDefStmt,
ExtCmdStmt,
GateTimeStmt,
LengthStmt,
NoteStmt,
OctaveStmt,
Program,
RepeatEndStmt,
RepeatStartStmt,
RestStmt,
SweepStmt,
TempoStmt,
TieStmt,
Track,
VolumeStmt,
)
from .ir import (
DutyEvent,
ErrorCode,
ErrorDetail,
NoteEvent,
NoteSequence,
RepeatEvent,
RestEvent,
TempoEvent,
VolumeEvent,
)
from .parser_base import clamp, length_value_to_ticks, note_to_midi
from .semantic_base import SemanticAnalyzer
PULSE_CHANNELS = {"Pulse1", "Pulse2"}
class PpmckSemanticAnalyzer(SemanticAnalyzer):
def __init__(self, source: str, program: Program) -> None:
super().__init__(source, program)
self.loop_start: int | None = None
def analyze(self) -> tuple[NoteSequence, list[ErrorDetail]]:
ns, errors = super().analyze()
if self.loop_start is not None:
max_tick = max(
ch.total_ticks for ch in ns.channels.values()
)
for ch in ns.channels.values():
ch.events.append(
RepeatEvent(
start_tick=self.loop_start,
end_tick=max_tick,
repeat_count=0,
)
)
# Recompute total_ticks after adding loop events
for ch in ns.channels.values():
ch.total_ticks = max(
(e.tick_position + getattr(e, "duration", 0) for e in ch.events),
default=0,
)
return ns, errors
def _reset_state(self, track: Track) -> None:
self.octave = 4
self.default_length = 4
self.velocity = 15
self.gate_time = 1.0
self.duty = 2
self.tick_position = 0
def _analyze_track(self, track: Track) -> None:
if track.channel == "Loop":
self.loop_start = 0
return
super()._analyze_track(track)
def _analyze_note(self, stmt: NoteStmt) -> None:
ticks = self._ticks_for(stmt)
midi = note_to_midi(stmt.note_name, self.octave, stmt.accidental)
if self.current_channel == "Noise":
self.ctx.add_error(
code=ErrorCode.SEMANTIC_CHANNEL_MISMATCH,
line=stmt.line,
column=stmt.column,
message="チャンネル 'Noise' で音高指定は使用できません。",
severity="warning",
hint="Noiseチャンネルでは音高ではなく音長と音量のみ指定してください。",
context=self._context_line(stmt),
)
midi = 0
if not 0 <= midi <= 127:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_NOTE_OUT_OF_RANGE,
line=stmt.line,
column=stmt.column,
message=f"音高が範囲外です（MIDI音番号 {midi}）。",
severity="warning",
hint="オクターブを調整してください。有効範囲: o0〜o7。",
context=self._context_line(stmt),
)
midi = clamp(midi, 0, 127)
event = NoteEvent(
tick_position=self.tick_position,
duration=ticks,
note_number=midi,
velocity=self.velocity,
duty=self.duty,
gate_time=self.gate_time,
)
self._add_event(event)
self.tick_position += ticks
def _analyze_rest(self, stmt: RestStmt) -> None:
ticks = self._ticks_for(stmt)
event = RestEvent(tick_position=self.tick_position, duration=ticks)
self._add_event(event)
self.tick_position += ticks
def _analyze_octave(self, stmt: OctaveStmt) -> None:
if stmt.direction == "up":
if self.octave < 7:
self.octave += 1
return
if stmt.direction == "down":
if self.octave > 0:
self.octave -= 1
return
if stmt.value is None:
return
if not 0 <= stmt.value <= 7:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_VALUE_OUT_OF_RANGE,
line=stmt.line,
column=stmt.column,
message=f"'o' の値 {stmt.value} は範囲外です。有効範囲: 0〜7。",
severity="error",
hint="例: o4 のように指定してください。",
context=self._context_line(stmt),
)
return
self.octave = stmt.value
def _analyze_length(self, stmt: LengthStmt) -> None:
if not 1 <= stmt.value <= 192:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_VALUE_OUT_OF_RANGE,
line=stmt.line,
column=stmt.column,
message=f"'l' の値 {stmt.value} は範囲外です。有効範囲: 1〜192。",
severity="error",
hint="例: l8 のように指定してください。",
context=self._context_line(stmt),
)
return
self.default_length = stmt.value
def _analyze_volume(self, stmt: VolumeStmt) -> None:
if self.current_channel == "Triangle":
# Silently ignored per spec
return
if not 0 <= stmt.value <= 15:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_VALUE_OUT_OF_RANGE,
line=stmt.line,
column=stmt.column,
message=f"'v' の値 {stmt.value} は範囲外です。有効範囲: 0〜15。",
severity="error",
hint="例: v15 のように指定してください。",
context=self._context_line(stmt),
)
return
self.velocity = stmt.value
self._add_event(VolumeEvent(tick_position=self.tick_position, value=stmt.value))
def _analyze_duty(self, stmt: DutyStmt) -> None:
if self.current_channel not in PULSE_CHANNELS:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_CHANNEL_MISMATCH,
line=stmt.line,
column=stmt.column,
message=f"チャンネル '{self.current_channel}' で 'q' は使用できません。",
severity="warning",
hint="Triangleチャンネルはデューティ比を持ちません。q コマンドを削除してください。",
context=self._context_line(stmt),
)
return
if not 0 <= stmt.value <= 3:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_VALUE_OUT_OF_RANGE,
line=stmt.line,
column=stmt.column,
message=f"'q' の値 {stmt.value} は範囲外です。有効範囲: 0〜3。",
severity="error",
hint="例: q2 のように指定してください。",
context=self._context_line(stmt),
)
return
self.duty = stmt.value
self._add_event(DutyEvent(tick_position=self.tick_position, value=stmt.value))
def _analyze_tempo(self, stmt: TempoStmt) -> None:
if stmt.value < 1:
self.ctx.add_error(
code=ErrorCode.SEMANTIC_VALUE_OUT_OF_RANGE,
line=stmt.line,
column=stmt.column,
message=f"'t' の値 {stmt.value} は範囲外です。有効範囲: 1以上。",
severity="error",
hint="例: t150 のように指定してください。",
context=self._context_line(stmt),
)
return
self.note_sequence.bpm = stmt.value
self._add_event(TempoEvent(tick_position=self.tick_position, bpm=stmt.value))
def _analyze_gate_time(self, stmt: GateTimeStmt) -> None:
# ppmck does not support gate time
self._analyze_stage2(stmt)
def _analyze_tie(self, stmt: TieStmt) -> None:
if stmt.target is None:
return
if isinstance(stmt.target, int):
ticks = length_value_to_ticks(stmt.target, 0)
self._extend_last_note(ticks)
self.tick_position += ticks
return
if isinstance(stmt.target, NoteStmt):
target_ticks = self._ticks_for(stmt.target)
self._extend_last_note(target_ticks)
self.tick_position += target_ticks
return
if isinstance(stmt.target, RestStmt):
target_ticks = self._ticks_for(stmt.target)
self._extend_last_note(target_ticks)
self.tick_position += target_ticks
return
def _analyze_repeat_start(self, stmt: RepeatStartStmt) -> None:
# Stage 2 feature
self._analyze_stage2(stmt)
def _analyze_repeat_end(self, stmt: RepeatEndStmt) -> None:
# Stage 2 feature
self._analyze_stage2(stmt)
def _analyze_ext_cmd(self, stmt: ExtCmdStmt) -> None:
# ppmck does not use pyxel ext commands
self._analyze_stage2(stmt)
def _analyze_stage2(self, stmt) -> None: # type: ignore[no-untyped-def]
if isinstance(stmt, EnvelopeDefStmt):
self.ctx.add_error(
code=ErrorCode.SEMANTIC_UNSUPPORTED_FEATURE,
line=stmt.line,
column=stmt.column,
message="エンベロープ定義 '@v' は第2段階で実装されます。",
severity="warning",
hint="現時点では無視されます。",
context=self._context_line(stmt),
)
elif isinstance(stmt, SweepStmt):
self.ctx.add_error(
code=ErrorCode.SEMANTIC_UNSUPPORTED_FEATURE,
line=stmt.line,
column=stmt.column,
message="スイープ 's' は第2段階で実装されます。",
severity="warning",
hint="現時点では無視されます。",
context=self._context_line(stmt),
)
else:
super()._analyze_stage2(stmt)
def analyze_ppmck(
source: str, program: Program
) -> tuple[NoteSequence, list[ErrorDetail]]:
analyzer = PpmckSemanticAnalyzer(source, program)
return analyzer.analyze()
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