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|
"""Intermediate representation for MML NoteSequence and errors."""
from dataclasses import dataclass, field
from enum import Enum
from typing import Any
class ErrorPhase(Enum):
"""Phase where an error occurred."""
LEXER = "lexer"
SYNTAX = "syntax"
SEMANTIC = "semantic"
RUNTIME = "runtime"
API = "api"
class ErrorCode(Enum):
"""Machine-readable error codes.
Errors are classified by phase:
- SYNTAX_*: token sequence violates the BNF grammar.
- SEMANTIC_*: syntactically valid but semantically invalid (range,
channel mismatch, undefined reference, etc.).
- RUNTIME_*: failure during synthesis or WAV output.
- VALIDATION_*: API-level parameter validation errors.
"""
# --- Syntax errors (Parser phase) ---
SYNTAX_INVALID_TOKEN = "SYNTAX_INVALID_TOKEN"
SYNTAX_INVALID_NUMBER = "SYNTAX_INVALID_NUMBER"
SYNTAX_UNEXPECTED_TOKEN = "SYNTAX_UNEXPECTED_TOKEN"
SYNTAX_UNTERMINATED_REPEAT = "SYNTAX_UNTERMINATED_REPEAT"
SYNTAX_UNMATCHED_REPEAT_END = "SYNTAX_UNMATCHED_REPEAT_END"
SYNTAX_UNTERMINATED_TIE = "SYNTAX_UNTERMINATED_TIE"
SYNTAX_INVALID_TRACK_HEADER = "SYNTAX_INVALID_TRACK_HEADER"
SYNTAX_DUPLICATE_TRACK = "SYNTAX_DUPLICATE_TRACK"
SYNTAX_UNTERMINATED_HEADER = "SYNTAX_UNTERMINATED_HEADER"
# --- Semantic errors (SemanticAnalyzer phase) ---
SEMANTIC_VALUE_OUT_OF_RANGE = "SEMANTIC_VALUE_OUT_OF_RANGE"
SEMANTIC_NOTE_OUT_OF_RANGE = "SEMANTIC_NOTE_OUT_OF_RANGE"
SEMANTIC_CHANNEL_MISMATCH = "SEMANTIC_CHANNEL_MISMATCH"
SEMANTIC_EMPTY_TRACK = "SEMANTIC_EMPTY_TRACK"
SEMANTIC_OUTSIDE_TRACK = "SEMANTIC_OUTSIDE_TRACK"
SEMANTIC_UNDEFINED_REFERENCE = "SEMANTIC_UNDEFINED_REFERENCE"
SEMANTIC_UNSUPPORTED_FEATURE = "SEMANTIC_UNSUPPORTED_FEATURE"
# --- Runtime errors (Synthesizer phase) ---
RUNTIME_SYNTHESIS_FAILED = "RUNTIME_SYNTHESIS_FAILED"
RUNTIME_WAV_WRITE_FAILED = "RUNTIME_WAV_WRITE_FAILED"
RUNTIME_INTERNAL_ERROR = "RUNTIME_INTERNAL_ERROR"
# --- API-level errors (parameter validation, not MML syntax) ---
VALIDATION_MISSING_PARAMETER = "VALIDATION_MISSING_PARAMETER"
VALIDATION_INVALID_MODE = "VALIDATION_INVALID_MODE"
VALIDATION_INVALID_ACTION = "VALIDATION_INVALID_ACTION"
@dataclass
class ErrorDetail:
"""Structured error/warning detail."""
code: ErrorCode
phase: ErrorPhase
line: int
column: int
message: str
severity: str # "error" | "warning"
hint: str = ""
context: str = ""
def to_dict(self) -> dict[str, Any]:
return {
"code": self.code.value,
"phase": self.phase.value,
"line": self.line,
"column": self.column,
"message": self.message,
"severity": self.severity,
"hint": self.hint,
"context": self.context,
}
@dataclass
class NoteEvent:
type: str = "note"
tick_position: int = 0
duration: int = 0
note_number: int = 69
velocity: int = 15
duty: int = 2
gate_time: float = 1.0
detune_cents: float = 0.0
@dataclass
class RestEvent:
type: str = "rest"
tick_position: int = 0
duration: int = 0
@dataclass
class VolumeEvent:
type: str = "volume"
tick_position: int = 0
value: int = 15
@dataclass
class DutyEvent:
type: str = "duty"
tick_position: int = 0
value: int = 2
@dataclass
class TempoEvent:
type: str = "tempo"
tick_position: int = 0
bpm: int = 120
@dataclass
class RepeatEvent:
type: str = "repeat"
tick_position: int = 0
start_tick: int = 0
end_tick: int = 0
repeat_count: int = 1
duration: int = 0
@dataclass
class EnvelopeEvent:
type: str = "envelope"
tick_position: int = 0
slot: int = 0
points: list[dict[str, int]] = field(default_factory=list)
@dataclass
class VibratoEvent:
type: str = "vibrato"
tick_position: int = 0
slot: int = 0
params: dict[str, int] = field(default_factory=dict)
@dataclass
class GlideEvent:
type: str = "glide"
tick_position: int = 0
slot: int = 0
params: dict[str, int] = field(default_factory=dict)
Event = (
NoteEvent
| RestEvent
| VolumeEvent
| DutyEvent
| TempoEvent
| RepeatEvent
| EnvelopeEvent
| VibratoEvent
| GlideEvent
)
@dataclass
class ChannelSequence:
channel_type: str = "pulse"
events: list[Event] = field(default_factory=list)
total_ticks: int = 0
def to_dict(self) -> dict[str, Any]:
return {
"channel_type": self.channel_type,
"events": [event_to_dict(e) for e in self.events],
"total_ticks": self.total_ticks,
}
@dataclass
class NoteSequence:
version: str = "1.0"
bpm: int = 120
ticks_per_quarter: int = 192
channels: dict[str, ChannelSequence] = field(
default_factory=lambda: {
"Pulse1": ChannelSequence("pulse"),
"Pulse2": ChannelSequence("pulse"),
"Triangle": ChannelSequence("triangle"),
"Noise": ChannelSequence("noise"),
}
)
def to_dict(self) -> dict[str, Any]:
return {
"version": self.version,
"bpm": self.bpm,
"ticks_per_quarter": self.ticks_per_quarter,
"channels": {k: v.to_dict() for k, v in self.channels.items()},
}
def event_to_dict(event: Event) -> dict[str, Any]:
if isinstance(
event, (NoteEvent, RestEvent, VolumeEvent, DutyEvent, TempoEvent, RepeatEvent)
):
return event.__dict__
if isinstance(event, (EnvelopeEvent, VibratoEvent, GlideEvent)):
return event.__dict__
raise TypeError(f"Unsupported event type: {type(event)}")
|
