806 lines
38 KiB
C#
806 lines
38 KiB
C#
using System.Globalization;
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namespace AquariumSynth.Dsl;
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public sealed class PatchScriptException(int line, string message) : Exception($"line {line}: {message}")
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{
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public int Line { get; } = line;
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}
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public static class PatchScript
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{
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public static SynthPatch Parse(string script)
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{
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var compiler = new Compiler();
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var line = 1;
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foreach (var statement in PatchScriptStatements.Enumerate(script))
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{
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compiler.Apply(statement.Text, statement.Line);
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line = statement.Line;
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}
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if (!compiler.HasOutput)
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{
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throw new PatchScriptException(line, "patch script produced no voices or operator graphs");
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}
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return compiler.Build();
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}
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private sealed class Compiler
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{
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private readonly Dictionary<string, Dictionary<string, string>> _templates = new(StringComparer.OrdinalIgnoreCase);
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private readonly List<ControlLane> _controls = [];
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private readonly List<OperatorGraph> _operatorGraphs = [];
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private readonly List<PatchParameter> _parameters = [];
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private readonly List<ParameterBinding> _parameterBindings = [];
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private readonly Dictionary<string, string> _defaults = new(StringComparer.OrdinalIgnoreCase);
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private PendingOperatorGraph? _pendingOperatorGraph;
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public List<Voice> Voices { get; } = [];
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public List<OperatorGraph> OperatorGraphs => _operatorGraphs;
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public bool HasOutput => Voices.Count > 0 || _operatorGraphs.Count > 0 || _pendingOperatorGraph is not null;
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private Repeat? Repeat { get; set; }
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private float Gain { get; set; } = 1;
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private bool SoftClip { get; set; } = true;
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public SynthPatch Build()
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{
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FlushPendingOperatorGraph();
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return new SynthPatch
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{
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Voices = Voices,
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OperatorGraphs = _operatorGraphs,
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Controls = _controls,
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Parameters = _parameters,
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ParameterBindings = _parameterBindings,
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Repeat = Repeat,
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Gain = Gain,
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SoftClip = SoftClip
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};
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}
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public void Apply(string statement, int line)
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{
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var parts = statement.Split((char[]?)null, StringSplitOptions.RemoveEmptyEntries);
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var rawCommand = parts[0];
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var command = CanonicalCommand(parts[0]);
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var fields = ParseFields(parts.Skip(1), line);
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if (SfxrParams.Named(rawCommand) is { } namedParams)
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{
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FlushPendingOperatorGraph();
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AddSfxrPatch(ApplySfxrFields(namedParams, fields, line));
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return;
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}
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switch (command)
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{
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case "patch":
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FlushPendingOperatorGraph();
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ApplyPatch(fields, line);
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break;
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case "defaults":
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FlushPendingOperatorGraph();
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Merge(_defaults, fields);
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break;
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case "template":
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FlushPendingOperatorGraph();
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var name = Required(fields, "name", line);
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_templates[name] = Without(fields, "name");
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break;
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case "voice":
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FlushPendingOperatorGraph();
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Voices.Add(ParseVoice(ExpandVoiceFields(fields, line), Voices.Count, line));
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break;
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case "opgraph":
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StartOperatorGraph(fields, line);
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break;
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case "operator":
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AddOperator(fields, line);
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break;
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case "route":
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AddOperatorRoute(fields, line);
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break;
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case "carrier":
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AddOperatorCarrier(fields, line);
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break;
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case "mod":
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FlushPendingOperatorGraph();
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AddModBus(fields, line);
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break;
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case "control":
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FlushPendingOperatorGraph();
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AddControlLane(fields, line);
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break;
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case "param":
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FlushPendingOperatorGraph();
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AddParameter(fields, line);
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break;
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case "sfxr":
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FlushPendingOperatorGraph();
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AddSfxrPatch(ParseSfxrCommand(fields, line));
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break;
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default:
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throw new PatchScriptException(line, $"unknown command `{parts[0]}`");
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}
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}
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private Dictionary<string, string> ExpandVoiceFields(Dictionary<string, string> fields, int line)
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{
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var expanded = new Dictionary<string, string>(_defaults, StringComparer.OrdinalIgnoreCase);
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if (TryGetAny(fields, ["use", "u"], out var templateName))
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{
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foreach (var name in templateName.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries))
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{
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if (!_templates.TryGetValue(name, out var template))
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{
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throw new PatchScriptException(line, $"unknown template `{name}`");
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}
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Merge(expanded, template);
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}
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}
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Merge(expanded, Without(fields, "use", "u"));
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return expanded;
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}
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private void ApplyPatch(IReadOnlyDictionary<string, string> fields, int line)
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{
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if (TryGetAny(fields, ["gain", "g"], out var gain)) Gain = ParseBoundFloat(gain, line, Gain, "/patch/gain");
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if (TryGetAny(fields, ["soft_clip", "clip"], out var softClip)) SoftClip = ParseBool(softClip, line);
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if (TryGetAny(fields, ["repeat", "r", "rp"], out var repeat))
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{
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var interval = ParseBoundFloat(repeat, line, 0.1f, "/patch/repeat");
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Repeat = interval > 0 ? new Repeat(interval) : null;
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}
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}
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private Voice ParseVoice(IReadOnlyDictionary<string, string> fields, int voiceIndex, int line)
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{
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var waveform = TryGetAny(fields, ["wave", "w"], out var wave) ? ParseWaveform(wave, line) : Waveform.Sine;
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var formants = TryGetAny(fields, ["formants", "fs"], out var formantSpec)
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? ParseFormants(formantSpec, line)
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: [];
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var modulators = TryGetAny(fields, ["mods", "m"], out var mods)
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? ParseVoiceModulators(mods, line)
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: [];
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Arpeggio? arpeggio = null;
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var hasArpDelay = TryGetAny(fields, ["arp_delay", "ad"], out var arpDelay);
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var hasArpMult = TryGetAny(fields, ["arp_mult", "am"], out var arpMult);
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if (hasArpDelay || hasArpMult)
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{
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arpeggio = new Arpeggio(
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ParseBoundFloat(arpDelay ?? throw new PatchScriptException(line, "arpeggio needs arp_delay"), line, 0, VoiceField(voiceIndex, "arpeggio/delay")),
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ParseBoundFloat(arpMult ?? throw new PatchScriptException(line, "arpeggio needs arp_mult"), line, 1, VoiceField(voiceIndex, "arpeggio/multiplier")));
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}
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return new Voice
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{
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Oscillator = new Oscillator(
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waveform,
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GetBoundFloat(fields, line, 440, VoiceField(voiceIndex, "osc/freq"), "freq", "frequency", "f"),
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GetBoundFloat(fields, line, 0.5f, VoiceField(voiceIndex, "osc/duty"), "duty", "du"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "osc/phase"), "phase", "pa")),
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Envelope = new Envelope(
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "env/attack"), "attack", "a"),
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GetBoundFloat(fields, line, 0.1f, VoiceField(voiceIndex, "env/sustain"), "sustain", "s"),
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GetBoundFloat(fields, line, 0.1f, VoiceField(voiceIndex, "env/decay"), "decay", "d"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "env/punch"), "punch", "pu")),
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Pitch = new PitchMotion(
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GetBoundFloat(fields, line, 20, VoiceField(voiceIndex, "pitch/min_freq"), "min_freq", "min"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "pitch/ramp"), "pitch_ramp", "pr"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "pitch/delta"), "pitch_delta", "pd", "pitch_dramp", "pdr"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "pitch/vibrato"), "vibrato", "vi"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "pitch/vibrato_hz"), "vibrato_hz", "vh"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "pitch/vibrato_delay"), "vibrato_delay", "vd")),
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Duty = new DutyMotion(GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "duty/ramp"), "duty_ramp", "dur")),
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Filter = new Filter(
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GetBoundFloat(fields, line, 1, VoiceField(voiceIndex, "filter/lpf"), "lpf", "l"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "filter/lpf_ramp"), "lpf_ramp", "lr"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "filter/resonance"), "resonance", "res"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "filter/hpf"), "hpf", "h"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "filter/hpf_ramp"), "hpf_ramp", "hr")),
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Phaser = new Phaser(
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "phaser/offset"), "phaser", "ph"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "phaser/ramp"), "phaser_ramp", "phr")),
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Arpeggio = arpeggio,
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Fm = new FrequencyModulation(
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GetBoundFloat(fields, line, 1, VoiceField(voiceIndex, "fm/ratio"), "fm", "fmr", "fm_ratio"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "fm/index"), "fm_index", "fmi"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "fm/decay"), "fm_decay", "fmd")),
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Color = new VoiceColor(
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "color/noise"), "noise", "nz"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "color/drive"), "drive", "drv"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "color/fold"), "fold", "fl"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "color/tremolo"), "tremolo", "tr"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "color/tremolo_hz"), "tremolo_hz", "th"),
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GetBoundFloat(fields, line, 0, VoiceField(voiceIndex, "color/formant_mix"), "formant_mix", "fmix")),
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Formants = formants,
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Modulators = modulators,
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Gain = GetBoundFloat(fields, line, 0.2f, VoiceField(voiceIndex, "gain"), "gain", "g")
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};
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}
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private void AddModBus(IReadOnlyDictionary<string, string> fields, int line)
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{
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var name = GetAny(fields, ["name", "n"], "mod");
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var wave = TryGetAny(fields, ["wave", "w"], out var waveform)
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? ParseModWaveform(waveform, line)
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: ModWaveform.Sine;
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var hz = GetFloat(fields, line, 1, "hz", "rate");
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var phase = GetFloat(fields, line, 0, "phase");
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if (TryGetAny(fields, ["to", "targets"], out var routeSpec))
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{
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foreach (var route in ParseRoutes(routeSpec, line))
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{
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_controls.Add(new ControlLane(
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$"{name}_{TargetSuffix(route.Target)}",
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new Modulator(route.Target, wave, hz, route.Depth, phase)));
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}
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}
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foreach (var (key, target) in ModTargets)
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{
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if (!TryGetAny(fields, key, out var depthText)) continue;
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var depth = ParseFloat(depthText, line);
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_controls.Add(new ControlLane($"{name}_{key[0]}", new Modulator(target, wave, hz, depth, phase)));
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}
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}
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private void AddControlLane(IReadOnlyDictionary<string, string> fields, int line)
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{
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var name = GetAny(fields, ["name", "n"], "control");
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if (!TryGetAny(fields, ["target", "t"], out var targetText))
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{
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throw new PatchScriptException(line, "control lane needs target");
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}
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var wave = TryGetAny(fields, ["wave", "w"], out var waveform)
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? ParseModWaveform(waveform, line)
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: ModWaveform.Sine;
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_controls.Add(new ControlLane(
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name,
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new Modulator(
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ParseModTarget(targetText, line),
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wave,
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GetFloat(fields, line, 1, "hz", "rate"),
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GetFloat(fields, line, 0, "depth", "d", "decay"),
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GetFloat(fields, line, 0, "phase", "ph"),
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GetFloat(fields, line, 0, "bias", "b"))));
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}
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private void AddOperatorGraph(IReadOnlyDictionary<string, string> fields, int line)
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{
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var graphIndex = _operatorGraphs.Count;
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var graphPath = $"/opgraphs/{graphIndex}";
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var operators = ParseOperatorNodes(Required(fields, "ops", line), line);
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var edges = TryGetAny(fields, ["edges", "e"], out var edgeSpec)
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? ParseOperatorEdges(edgeSpec, line)
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: [];
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var carriers = TryGetAny(fields, ["carriers", "c"], out var carrierSpec)
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? ParseOperatorIds(carrierSpec, line)
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: operators.Select(op => op.Id).ToList();
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AddValidatedOperatorGraph(line, new OperatorGraph(
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GetAny(fields, ["name", "n"], $"opgraph{graphIndex}"),
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GetBoundFloat(fields, line, 440, $"{graphPath}/freq", "freq", "frequency", "f"),
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operators,
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edges,
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carriers,
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GetBoundFloat(fields, line, 0.2f, $"{graphPath}/gain", "gain", "g")));
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}
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private void StartOperatorGraph(IReadOnlyDictionary<string, string> fields, int line)
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{
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FlushPendingOperatorGraph();
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if (fields.ContainsKey("ops"))
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{
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AddOperatorGraph(fields, line);
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return;
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}
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var graphIndex = _operatorGraphs.Count;
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var graphPath = $"/opgraphs/{graphIndex}";
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_pendingOperatorGraph = new PendingOperatorGraph(
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line,
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GetAny(fields, ["name", "n"], $"opgraph{graphIndex}"),
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GetBoundFloat(fields, line, 440, $"{graphPath}/freq", "freq", "frequency", "f"),
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GetBoundFloat(fields, line, 0.2f, $"{graphPath}/gain", "gain", "g"));
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}
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private void AddOperator(IReadOnlyDictionary<string, string> fields, int line)
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{
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var graph = RequiredPendingOperatorGraph(line);
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var id = ParseOperatorId(Required(fields, "name", line), line);
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var envelope = TryGetAny(fields, ["env", "envelope"], out var envSpec)
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? ParseEnvelopeSpec(envSpec, line)
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: new Envelope(
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GetFloat(fields, line, 0, "attack", "a"),
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GetFloat(fields, line, 0.1f, "sustain", "s"),
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GetFloat(fields, line, 0.1f, "decay", "d"),
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GetFloat(fields, line, 0, "punch", "pu"));
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graph.Operators.Add(new OperatorNode(
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id,
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GetFloat(fields, line, 1, "ratio", "r"),
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GetFloat(fields, line, 1, "level", "l"),
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GetFloat(fields, line, 0, "feedback", "fb"),
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0,
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GetFloat(fields, line, 0, "release"),
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envelope));
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}
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private void AddOperatorRoute(IReadOnlyDictionary<string, string> fields, int line)
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{
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var graph = RequiredPendingOperatorGraph(line);
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var source = ParseOperatorId(Required(fields, "from", line), line);
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var target = ParseOperatorId(Required(fields, "to", line), line);
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graph.Edges.Add(new OperatorEdge(source, target, GetFloat(fields, line, 1, "index", "amount", "depth")));
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}
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private void AddOperatorCarrier(IReadOnlyDictionary<string, string> fields, int line)
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{
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var graph = RequiredPendingOperatorGraph(line);
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graph.Carriers.Add(ParseOperatorId(Required(fields, "name", line), line));
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}
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private PendingOperatorGraph RequiredPendingOperatorGraph(int line) =>
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_pendingOperatorGraph ?? throw new PatchScriptException(line, "operator graph command needs an active opgraph");
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private void FlushPendingOperatorGraph()
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{
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if (_pendingOperatorGraph is null) return;
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var graph = _pendingOperatorGraph;
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_pendingOperatorGraph = null;
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AddValidatedOperatorGraph(graph.Line, new OperatorGraph(
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graph.Name,
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graph.FrequencyHz,
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graph.Operators,
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graph.Edges,
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graph.Carriers.Count > 0 ? graph.Carriers : graph.Operators.Select(op => op.Id).ToList(),
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graph.Gain));
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}
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private void AddValidatedOperatorGraph(int line, OperatorGraph graph)
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{
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if (graph.Operators.Count == 0)
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{
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throw new PatchScriptException(line, "operator graph needs at least one operator");
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}
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var operatorIds = graph.Operators.Select(op => op.Id).ToHashSet();
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foreach (var edge in graph.Edges)
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{
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if (!operatorIds.Contains(edge.SourceId) || !operatorIds.Contains(edge.TargetId))
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{
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throw new PatchScriptException(line, $"operator edge `{edge.SourceId}>{edge.TargetId}` references an unknown operator");
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}
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}
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foreach (var carrier in graph.Carriers)
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{
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if (!operatorIds.Contains(carrier))
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{
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throw new PatchScriptException(line, $"carrier `{carrier}` references an unknown operator");
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}
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}
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_operatorGraphs.Add(graph);
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}
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private void AddParameter(IReadOnlyDictionary<string, string> fields, int line)
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{
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var path = Required(fields, "path", line);
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if (!path.StartsWith('/'))
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{
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throw new PatchScriptException(line, "parameter path must start with `/`");
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}
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if (_parameters.Any(parameter => parameter.Path.Equals(path, StringComparison.OrdinalIgnoreCase)))
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{
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throw new PatchScriptException(line, $"duplicate parameter path `{path}`");
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}
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var label = TryGetAny(fields, ["label", "name", "n"], out var labelText)
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? labelText
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: path.Split('/', StringSplitOptions.RemoveEmptyEntries).LastOrDefault() ?? path;
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var min = GetFloat(fields, line, 0, "min");
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var max = GetFloat(fields, line, 1, "max");
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var step = GetFloat(fields, line, 0.001f, "step");
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var fallbackDefault = Math.Clamp(0.5f, Math.Min(min, max), Math.Max(min, max));
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var defaultValue = GetFloat(fields, line, fallbackDefault, "default", "value", "v");
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if (max < min)
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{
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throw new PatchScriptException(line, "parameter max must be greater than or equal to min");
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}
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if (step < 0)
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{
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throw new PatchScriptException(line, "parameter step must be non-negative");
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}
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if (defaultValue < min || defaultValue > max)
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{
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throw new PatchScriptException(line, "parameter default must be inside min/max");
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}
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_parameters.Add(new PatchParameter(
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path,
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label,
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defaultValue,
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min,
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max,
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step,
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GetAny(fields, ["unit"], ""),
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GetAny(fields, ["rate", "automation", "automation_rate"], "control"),
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GetAny(fields, ["notes", "note"], "")));
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}
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private float GetBoundFloat(
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IReadOnlyDictionary<string, string> fields,
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int line,
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float fallback,
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string fieldPath,
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params string[] keys) =>
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TryGetAny(fields, keys, out var value) ? ParseBoundFloat(value, line, fallback, fieldPath) : fallback;
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private float ParseBoundFloat(string value, int line, float fallback, string fieldPath)
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{
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if (!value.StartsWith('@'))
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{
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return ParseFloat(value, line);
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}
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|
|
var parameterPath = value[1..];
|
|
if (!parameterPath.StartsWith('/'))
|
|
{
|
|
throw new PatchScriptException(line, "parameter reference must use `@/path`");
|
|
}
|
|
var parameter = _parameters.FirstOrDefault(candidate => candidate.Path.Equals(parameterPath, StringComparison.OrdinalIgnoreCase));
|
|
if (parameter is null)
|
|
{
|
|
throw new PatchScriptException(line, $"unknown parameter `{parameterPath}`");
|
|
}
|
|
if (_parameterBindings.Any(binding => binding.FieldPath.Equals(fieldPath, StringComparison.OrdinalIgnoreCase)))
|
|
{
|
|
throw new PatchScriptException(line, $"duplicate parameter binding for `{fieldPath}`");
|
|
}
|
|
|
|
_parameterBindings.Add(new ParameterBinding(fieldPath, parameter.Path));
|
|
return parameter.Default;
|
|
}
|
|
|
|
private static string VoiceField(int voiceIndex, string field) => $"/voices/{voiceIndex}/{field}";
|
|
|
|
private static List<OperatorNode> ParseOperatorNodes(string value, int line) =>
|
|
value.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
|
|
.Select(part =>
|
|
{
|
|
var pieces = part.Split(':');
|
|
if (pieces.Length is < 3 or > 6)
|
|
{
|
|
throw new PatchScriptException(line, $"bad operator `{part}`");
|
|
}
|
|
|
|
return new OperatorNode(
|
|
ParseInt(pieces[0], line),
|
|
ParseFloat(pieces[1], line),
|
|
ParseFloat(pieces[2], line),
|
|
pieces.Length >= 4 ? ParseFloat(pieces[3], line) : 0,
|
|
0,
|
|
0,
|
|
pieces.Length >= 6 ? new Envelope(0, ParseFloat(pieces[4], line), ParseFloat(pieces[5], line)) : new Envelope());
|
|
})
|
|
.ToList();
|
|
|
|
private static List<OperatorEdge> ParseOperatorEdges(string value, int line) =>
|
|
value.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
|
|
.Select(part =>
|
|
{
|
|
var pieces = part.Split(':');
|
|
if (pieces.Length is < 1 or > 2)
|
|
{
|
|
throw new PatchScriptException(line, $"bad operator edge `{part}`");
|
|
}
|
|
|
|
var nodes = pieces[0].Split('>');
|
|
if (nodes.Length != 2)
|
|
{
|
|
throw new PatchScriptException(line, $"bad operator edge `{part}`");
|
|
}
|
|
|
|
return new OperatorEdge(
|
|
ParseInt(nodes[0], line),
|
|
ParseInt(nodes[1], line),
|
|
pieces.Length == 2 ? ParseFloat(pieces[1], line) : 1);
|
|
})
|
|
.ToList();
|
|
|
|
private static List<int> ParseOperatorIds(string value, int line) =>
|
|
value.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
|
|
.Select(part => ParseInt(part, line))
|
|
.ToList();
|
|
|
|
private static Envelope ParseEnvelopeSpec(string value, int line)
|
|
{
|
|
var pieces = value.Split(':');
|
|
return pieces[0].ToLowerInvariant() switch
|
|
{
|
|
"ad" when pieces.Length == 3 => new Envelope(
|
|
ParseFloat(pieces[1], line),
|
|
0,
|
|
ParseFloat(pieces[2], line)),
|
|
"adsr" when pieces.Length == 5 => new Envelope(
|
|
ParseFloat(pieces[1], line),
|
|
ParseFloat(pieces[2], line),
|
|
ParseFloat(pieces[4], line),
|
|
ParseFloat(pieces[3], line)),
|
|
_ => throw new PatchScriptException(line, $"bad envelope `{value}`")
|
|
};
|
|
}
|
|
|
|
private static int ParseOperatorId(string value, int line)
|
|
{
|
|
var normalized = value.StartsWith("op", StringComparison.OrdinalIgnoreCase)
|
|
? value[2..]
|
|
: value;
|
|
return ParseInt(normalized, line);
|
|
}
|
|
|
|
private void AddSfxrPatch(SfxrParams parameters)
|
|
{
|
|
var mapped = parameters.ToPatch();
|
|
Voices.AddRange(mapped.Voices);
|
|
Repeat = mapped.Repeat;
|
|
Gain *= mapped.Gain;
|
|
}
|
|
|
|
private static SfxrParams ParseSfxrCommand(IReadOnlyDictionary<string, string> fields, int line)
|
|
{
|
|
var parameters = TryGetAny(fields, ["preset", "p"], out var preset)
|
|
? SfxrParams.Named(preset) ?? throw new PatchScriptException(line, $"unknown sfxr preset `{preset}`")
|
|
: new SfxrParams();
|
|
return ApplySfxrFields(parameters, fields, line);
|
|
}
|
|
|
|
private static SfxrParams ApplySfxrFields(SfxrParams parameters, IReadOnlyDictionary<string, string> fields, int line)
|
|
{
|
|
if (TryGetAny(fields, ["mutate_seed", "ms"], out var seedText))
|
|
{
|
|
if (!ulong.TryParse(seedText, out var seed))
|
|
{
|
|
throw new PatchScriptException(line, "mutate_seed must be an integer");
|
|
}
|
|
|
|
var amount = GetFloat(fields, line, 0.05f, "mutate", "m");
|
|
parameters = parameters.Mutate(seed, amount);
|
|
}
|
|
|
|
if (TryGetAny(fields, ["wave", "w"], out var wave)) parameters = parameters with { WaveType = ParseWaveform(wave, line) };
|
|
if (TryGetAny(fields, ["base", "b"], out var baseFreq)) parameters = parameters with { BaseFreq = Math.Clamp(ParseFloat(baseFreq, line), 0, 1) };
|
|
if (TryGetAny(fields, ["limit", "lim"], out var limit)) parameters = parameters with { FreqLimit = Math.Clamp(ParseFloat(limit, line), 0, 1) };
|
|
if (TryGetAny(fields, ["ramp", "r"], out var ramp)) parameters = parameters with { FreqRamp = Math.Clamp(ParseFloat(ramp, line), -1, 1) };
|
|
if (TryGetAny(fields, ["dramp", "dr"], out var dramp)) parameters = parameters with { FreqDramp = Math.Clamp(ParseFloat(dramp, line), -1, 1) };
|
|
if (TryGetAny(fields, ["duty", "du"], out var duty)) parameters = parameters with { Duty = Math.Clamp(ParseFloat(duty, line), 0, 1) };
|
|
if (TryGetAny(fields, ["duty_ramp", "dur"], out var dutyRamp)) parameters = parameters with { DutyRamp = Math.Clamp(ParseFloat(dutyRamp, line), -1, 1) };
|
|
if (TryGetAny(fields, ["vib", "vi"], out var vib)) parameters = parameters with { VibStrength = Math.Clamp(ParseFloat(vib, line), 0, 1) };
|
|
if (TryGetAny(fields, ["vib_speed", "vs"], out var vibSpeed)) parameters = parameters with { VibSpeed = Math.Clamp(ParseFloat(vibSpeed, line), 0, 1) };
|
|
if (TryGetAny(fields, ["vib_delay", "vd"], out var vibDelay)) parameters = parameters with { VibDelay = Math.Clamp(ParseFloat(vibDelay, line), 0, 1) };
|
|
if (TryGetAny(fields, ["attack", "a"], out var attack)) parameters = parameters with { EnvAttack = Math.Clamp(ParseFloat(attack, line), 0, 1) };
|
|
if (TryGetAny(fields, ["sustain", "s"], out var sustain)) parameters = parameters with { EnvSustain = Math.Clamp(ParseFloat(sustain, line), 0, 1) };
|
|
if (TryGetAny(fields, ["decay", "d"], out var decay)) parameters = parameters with { EnvDecay = Math.Clamp(ParseFloat(decay, line), 0, 1) };
|
|
if (TryGetAny(fields, ["punch", "pu"], out var punch)) parameters = parameters with { EnvPunch = Math.Clamp(ParseFloat(punch, line), -1, 1) };
|
|
if (TryGetAny(fields, ["resonance", "res"], out var resonance)) parameters = parameters with { LpfResonance = Math.Clamp(ParseFloat(resonance, line), 0, 1) };
|
|
if (TryGetAny(fields, ["lpf"], out var lpf)) parameters = parameters with { LpfFreq = Math.Clamp(ParseFloat(lpf, line), 0, 1) };
|
|
if (TryGetAny(fields, ["lpf_ramp", "lpfr"], out var lpfRamp)) parameters = parameters with { LpfRamp = Math.Clamp(ParseFloat(lpfRamp, line), -1, 1) };
|
|
if (TryGetAny(fields, ["hpf"], out var hpf)) parameters = parameters with { HpfFreq = Math.Clamp(ParseFloat(hpf, line), 0, 1) };
|
|
if (TryGetAny(fields, ["hpf_ramp", "hpfr"], out var hpfRamp)) parameters = parameters with { HpfRamp = Math.Clamp(ParseFloat(hpfRamp, line), -1, 1) };
|
|
if (TryGetAny(fields, ["phaser", "ph"], out var phaser)) parameters = parameters with { PhaOffset = Math.Clamp(ParseFloat(phaser, line), -1, 1) };
|
|
if (TryGetAny(fields, ["phaser_ramp", "phr"], out var phaserRamp)) parameters = parameters with { PhaRamp = Math.Clamp(ParseFloat(phaserRamp, line), -1, 1) };
|
|
if (TryGetAny(fields, ["repeat", "rep"], out var repeat)) parameters = parameters with { RepeatSpeed = Math.Clamp(ParseFloat(repeat, line), 0, 1) };
|
|
if (TryGetAny(fields, ["arp"], out var arp)) parameters = parameters with { ArpSpeed = Math.Clamp(ParseFloat(arp, line), 0, 1) };
|
|
if (TryGetAny(fields, ["arp_mod", "am"], out var arpMod)) parameters = parameters with { ArpMod = Math.Clamp(ParseFloat(arpMod, line), -1, 1) };
|
|
return parameters;
|
|
}
|
|
|
|
private sealed record PendingOperatorGraph(
|
|
int Line,
|
|
string Name,
|
|
float FrequencyHz,
|
|
float Gain)
|
|
{
|
|
public List<OperatorNode> Operators { get; } = [];
|
|
public List<OperatorEdge> Edges { get; } = [];
|
|
public List<int> Carriers { get; } = [];
|
|
}
|
|
}
|
|
|
|
private static readonly (string[] Keys, ModTarget Target)[] ModTargets =
|
|
[
|
|
(["gain", "g"], ModTarget.Gain),
|
|
(["pitch", "p"], ModTarget.Pitch),
|
|
(["duty", "du"], ModTarget.Duty),
|
|
(["lpf", "l"], ModTarget.LowPass),
|
|
(["hpf", "h"], ModTarget.HighPass),
|
|
(["noise", "nz"], ModTarget.Noise),
|
|
(["drive", "drv"], ModTarget.Drive),
|
|
(["fold", "fl"], ModTarget.Fold),
|
|
(["formant_mix", "fmix", "formant"], ModTarget.FormantMix),
|
|
(["fm_index", "fmi"], ModTarget.FmIndex)
|
|
];
|
|
|
|
private static Dictionary<string, string> ParseFields(IEnumerable<string> tokens, int line)
|
|
{
|
|
var fields = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
|
|
foreach (var token in tokens)
|
|
{
|
|
var split = token.Split('=', 2);
|
|
if (split.Length != 2 || split[0].Length == 0)
|
|
{
|
|
throw new PatchScriptException(line, $"bad field `{token}`");
|
|
}
|
|
fields[CanonicalField(split[0])] = split[1];
|
|
}
|
|
return fields;
|
|
}
|
|
|
|
private static List<Formant> ParseFormants(string value, int line) =>
|
|
value.Split(',', StringSplitOptions.RemoveEmptyEntries)
|
|
.Select(part =>
|
|
{
|
|
var pieces = part.Split(':');
|
|
if (pieces.Length != 3) throw new PatchScriptException(line, $"bad formant `{part}`");
|
|
return new Formant(ParseFloat(pieces[0], line), ParseFloat(pieces[1], line), ParseFloat(pieces[2], line));
|
|
})
|
|
.ToList();
|
|
|
|
private static List<Modulator> ParseVoiceModulators(string value, int line) =>
|
|
value.Split(',', StringSplitOptions.RemoveEmptyEntries)
|
|
.Select(part =>
|
|
{
|
|
var pieces = part.Split(':');
|
|
if (pieces.Length != 4) throw new PatchScriptException(line, $"bad modulator `{part}`");
|
|
return new Modulator(
|
|
ParseModTarget(pieces[0], line),
|
|
ParseModWaveform(pieces[1], line),
|
|
ParseFloat(pieces[2], line),
|
|
ParseFloat(pieces[3], line));
|
|
})
|
|
.ToList();
|
|
|
|
private static IEnumerable<(ModTarget Target, float Depth)> ParseRoutes(string value, int line) =>
|
|
value.Split(',', StringSplitOptions.RemoveEmptyEntries)
|
|
.Select(part =>
|
|
{
|
|
var pieces = part.Split(':');
|
|
if (pieces.Length != 2) throw new PatchScriptException(line, $"bad route `{part}`");
|
|
return (ParseModTarget(pieces[0], line), ParseFloat(pieces[1], line));
|
|
});
|
|
|
|
private static string CanonicalCommand(string command) => command.ToLowerInvariant() switch
|
|
{
|
|
"p" or "patch" => "patch",
|
|
"d" or "default" or "defaults" => "defaults",
|
|
"def" or "t" or "template" => "template",
|
|
"v" or "voice" => "voice",
|
|
"opgraph" or "ops" or "operators" => "opgraph",
|
|
"operator" or "op" => "operator",
|
|
"route" or "edge" => "route",
|
|
"carrier" or "out" => "carrier",
|
|
"mod" or "wob" or "wobble" or "bus" => "mod",
|
|
"lfo" or "control" => "control",
|
|
"param" or "parameter" => "param",
|
|
"s" or "sfxr" => "sfxr",
|
|
_ => command
|
|
};
|
|
|
|
private static string CanonicalField(string field) => field.ToLowerInvariant() switch
|
|
{
|
|
"n" => "name",
|
|
"u" => "use",
|
|
"w" => "wave",
|
|
"f" => "freq",
|
|
"g" => "gain",
|
|
"a" => "attack",
|
|
"s" => "sustain",
|
|
"d" => "decay",
|
|
"from" or "src" => "from",
|
|
"to" or "dst" => "to",
|
|
_ => field
|
|
};
|
|
|
|
private static Waveform ParseWaveform(string value, int line) => value.ToLowerInvariant() switch
|
|
{
|
|
"sin" or "sine" => Waveform.Sine,
|
|
"sq" or "square" => Waveform.Square,
|
|
"saw" or "sawtooth" => Waveform.Sawtooth,
|
|
"tri" or "triangle" => Waveform.Triangle,
|
|
"n" or "noise" => Waveform.Noise,
|
|
_ => throw new PatchScriptException(line, $"unknown waveform `{value}`")
|
|
};
|
|
|
|
private static ModWaveform ParseModWaveform(string value, int line) => value.ToLowerInvariant() switch
|
|
{
|
|
"sin" or "sine" => ModWaveform.Sine,
|
|
"tri" or "triangle" => ModWaveform.Triangle,
|
|
"sq" or "square" => ModWaveform.Square,
|
|
"hold" or "sample_hold" => ModWaveform.SampleHold,
|
|
_ => throw new PatchScriptException(line, $"unknown mod waveform `{value}`")
|
|
};
|
|
|
|
private static ModTarget ParseModTarget(string value, int line)
|
|
{
|
|
foreach (var (keys, target) in ModTargets)
|
|
{
|
|
if (keys.Contains(value, StringComparer.OrdinalIgnoreCase) ||
|
|
keys.Select(CanonicalField).Contains(CanonicalField(value), StringComparer.OrdinalIgnoreCase))
|
|
{
|
|
return target;
|
|
}
|
|
}
|
|
if (value.Equals("formant", StringComparison.OrdinalIgnoreCase)) return ModTarget.FormantMix;
|
|
throw new PatchScriptException(line, $"unknown mod target `{value}`");
|
|
}
|
|
|
|
private static string TargetSuffix(ModTarget target) => target switch
|
|
{
|
|
ModTarget.Gain => "gain",
|
|
ModTarget.Pitch => "pitch",
|
|
ModTarget.Duty => "duty",
|
|
ModTarget.LowPass => "lpf",
|
|
ModTarget.HighPass => "hpf",
|
|
ModTarget.Noise => "noise",
|
|
ModTarget.Drive => "drive",
|
|
ModTarget.Fold => "fold",
|
|
ModTarget.FormantMix => "formant_mix",
|
|
ModTarget.FmIndex => "fm_index",
|
|
_ => target.ToString().ToLowerInvariant()
|
|
};
|
|
|
|
private static string Required(IReadOnlyDictionary<string, string> fields, string key, int line) =>
|
|
fields.TryGetValue(key, out var value) ? value : throw new PatchScriptException(line, $"missing `{key}`");
|
|
|
|
private static string GetAny(IReadOnlyDictionary<string, string> fields, string[] keys, string fallback) =>
|
|
TryGetAny(fields, keys, out var value) ? value : fallback;
|
|
|
|
private static bool TryGetAny(IReadOnlyDictionary<string, string> fields, string[] keys, out string value)
|
|
{
|
|
foreach (var key in keys.Select(CanonicalField))
|
|
{
|
|
if (fields.TryGetValue(key, out value!)) return true;
|
|
}
|
|
value = "";
|
|
return false;
|
|
}
|
|
|
|
private static float GetFloat(IReadOnlyDictionary<string, string> fields, int line, float fallback, params string[] keys) =>
|
|
TryGetAny(fields, keys, out var value) ? ParseFloat(value, line) : fallback;
|
|
|
|
private static float ParseFloat(string value, int line) =>
|
|
float.TryParse(value, NumberStyles.Float, CultureInfo.InvariantCulture, out var parsed)
|
|
? parsed
|
|
: throw new PatchScriptException(line, $"bad number `{value}`");
|
|
|
|
private static int ParseInt(string value, int line) =>
|
|
int.TryParse(value, NumberStyles.Integer, CultureInfo.InvariantCulture, out var parsed)
|
|
? parsed
|
|
: throw new PatchScriptException(line, $"bad integer `{value}`");
|
|
|
|
private static bool ParseBool(string value, int line) => value.ToLowerInvariant() switch
|
|
{
|
|
"true" or "1" or "yes" or "on" => true,
|
|
"false" or "0" or "no" or "off" => false,
|
|
_ => throw new PatchScriptException(line, $"bad bool `{value}`")
|
|
};
|
|
|
|
private static void Merge(IDictionary<string, string> target, IReadOnlyDictionary<string, string> source)
|
|
{
|
|
foreach (var (key, value) in source) target[key] = value;
|
|
}
|
|
|
|
private static Dictionary<string, string> Without(IReadOnlyDictionary<string, string> fields, params string[] keys)
|
|
{
|
|
var excluded = keys.Select(CanonicalField).ToHashSet(StringComparer.OrdinalIgnoreCase);
|
|
return fields.Where(pair => !excluded.Contains(pair.Key))
|
|
.ToDictionary(pair => pair.Key, pair => pair.Value, StringComparer.OrdinalIgnoreCase);
|
|
}
|
|
}
|