diff options
Diffstat (limited to 'src/data/patches.js')
| -rw-r--r-- | src/data/patches.js | 598 |
1 files changed, 307 insertions, 291 deletions
diff --git a/src/data/patches.js b/src/data/patches.js index 3ed4fad..feeaf39 100644 --- a/src/data/patches.js +++ b/src/data/patches.js @@ -1,370 +1,386 @@ // --> Patch export class Patch { - static INPUT_NONE = 0; - static INPUT_CONSTANT = 1; - static INPUT_DIRECT_CONNECTION = 2; - static INPUT_MANAGED_CONNECTION = 3; + static INPUT_NONE = 0; + static INPUT_CONSTANT = 1; + static INPUT_DIRECT_CONNECTION = 2; + static INPUT_MANAGED_CONNECTION = 3; - static INPUT_UNAVAILABLE = 0; - static INPUT_AVAILABLE = 1; + static INPUT_UNAVAILABLE = 0; + static INPUT_AVAILABLE = 1; - static OUTPUT_UNAVAILABLE = 0; - static OUTPUT_AVAILABLE = 1; + static OUTPUT_UNAVAILABLE = 0; + static OUTPUT_AVAILABLE = 1; - static inputNames = []; inputNames = null; - static outputNames = []; outputNames = null; + static inputNames = []; + inputNames = null; + static outputNames = []; + outputNames = null; - manager = null; - inputs = Object.create(null); + manager = null; + inputs = Object.create(null); - constructor({ - manager, + constructor({ + manager, - inputNames, - outputNames, + inputNames, + outputNames, - inputs, - } = {}) { - this.inputNames = inputNames ?? this.constructor.inputNames; - this.outputNames = outputNames ?? this.constructor.outputNames; + inputs, + } = {}) { + this.inputNames = inputNames ?? this.constructor.inputNames; + this.outputNames = outputNames ?? this.constructor.outputNames; - manager?.addManagedPatch(this); + manager?.addManagedPatch(this); - if (inputs) { - Object.assign(this.inputs, inputs); - } - - this.initializeInputs(); + if (inputs) { + Object.assign(this.inputs, inputs); } - initializeInputs() { - for (const inputName of this.inputNames) { - if (!this.inputs[inputName]) { - this.inputs[inputName] = [Patch.INPUT_NONE]; - } - } - } + this.initializeInputs(); + } - computeInputs() { - const inputs = Object.create(null); - - for (const inputName of this.inputNames) { - const input = this.inputs[inputName]; - switch (input[0]) { - case Patch.INPUT_NONE: - inputs[inputName] = [Patch.INPUT_UNAVAILABLE]; - break; - - case Patch.INPUT_CONSTANT: - inputs[inputName] = [Patch.INPUT_AVAILABLE, input[1]]; - break; - - case Patch.INPUT_DIRECT_CONNECTION: { - const patch = input[1]; - const outputName = input[2]; - const output = patch.computeOutputs()[outputName]; - switch (output[0]) { - case Patch.OUTPUT_UNAVAILABLE: - inputs[inputName] = [Patch.INPUT_UNAVAILABLE]; - break; - case Patch.OUTPUT_AVAILABLE: - inputs[inputName] = [Patch.INPUT_AVAILABLE, output[1]]; - break; - } - throw new Error('Unreachable'); - } - - case Patch.INPUT_MANAGED_CONNECTION: { - if (!this.manager) { - inputs[inputName] = [Patch.INPUT_UNAVAILABLE]; - break; - } - - inputs[inputName] = this.manager.getManagedInput(input[1]); - break; - } - } + initializeInputs() { + for (const inputName of this.inputNames) { + if (!this.inputs[inputName]) { + this.inputs[inputName] = [Patch.INPUT_NONE]; + } + } + } + + computeInputs() { + const inputs = Object.create(null); + + for (const inputName of this.inputNames) { + const input = this.inputs[inputName]; + switch (input[0]) { + case Patch.INPUT_NONE: + inputs[inputName] = [Patch.INPUT_UNAVAILABLE]; + break; + + case Patch.INPUT_CONSTANT: + inputs[inputName] = [Patch.INPUT_AVAILABLE, input[1]]; + break; + + case Patch.INPUT_DIRECT_CONNECTION: { + const patch = input[1]; + const outputName = input[2]; + const output = patch.computeOutputs()[outputName]; + switch (output[0]) { + case Patch.OUTPUT_UNAVAILABLE: + inputs[inputName] = [Patch.INPUT_UNAVAILABLE]; + break; + case Patch.OUTPUT_AVAILABLE: + inputs[inputName] = [Patch.INPUT_AVAILABLE, output[1]]; + break; + } + throw new Error('Unreachable'); } - return inputs; - } + case Patch.INPUT_MANAGED_CONNECTION: { + if (!this.manager) { + inputs[inputName] = [Patch.INPUT_UNAVAILABLE]; + break; + } - computeOutputs() { - const inputs = this.computeInputs(); - const outputs = Object.create(null); - console.log(`Compute: ${this.constructor.name}`); - this.compute(inputs, outputs); - return outputs; + inputs[inputName] = this.manager.getManagedInput(input[1]); + break; + } + } } - compute(inputs, outputs) { - // No-op. Return all outputs as unavailable. This should be overridden - // in subclasses. + return inputs; + } - for (const outputName of this.constructor.outputNames) { - outputs[outputName] = [Patch.OUTPUT_UNAVAILABLE]; - } - } + computeOutputs() { + const inputs = this.computeInputs(); + const outputs = Object.create(null); + console.log(`Compute: ${this.constructor.name}`); + this.compute(inputs, outputs); + return outputs; + } - attachToManager(manager) { - manager.addManagedPatch(this); + compute(inputs, outputs) { + // No-op. Return all outputs as unavailable. This should be overridden + // in subclasses. + + for (const outputName of this.constructor.outputNames) { + outputs[outputName] = [Patch.OUTPUT_UNAVAILABLE]; } + } - detachFromManager() { - if (this.manager) { - this.manager.removeManagedPatch(this); - } + attachToManager(manager) { + manager.addManagedPatch(this); + } + + detachFromManager() { + if (this.manager) { + this.manager.removeManagedPatch(this); } + } } // --> PatchManager export class PatchManager extends Patch { - managedPatches = []; - managedInputs = {}; + managedPatches = []; + managedInputs = {}; - #externalInputPatch = null; - #externalOutputPatch = null; + #externalInputPatch = null; + #externalOutputPatch = null; - constructor(...args) { - super(...args); + constructor(...args) { + super(...args); - this.#externalInputPatch = new PatchManagerExternalInputPatch({manager: this}); - this.#externalOutputPatch = new PatchManagerExternalOutputPatch({manager: this}); - } - - addManagedPatch(patch) { - if (patch.manager === this) { - return false; - } + this.#externalInputPatch = new PatchManagerExternalInputPatch({ + manager: this, + }); - patch.detachFromManager(); - patch.manager = this; + this.#externalOutputPatch = new PatchManagerExternalOutputPatch({ + manager: this, + }); + } - if (patch.manager === this) { - this.managedPatches.push(patch); - return true; - } else { - return false; - } + addManagedPatch(patch) { + if (patch.manager === this) { + return false; } - removeManagedPatch(patch) { - if (patch.manager !== this) { - return false; - } - - patch.manager = null; - - if (patch.manager === this) { - return false; - } + patch.detachFromManager(); + patch.manager = this; - for (const inputNames of patch.inputNames) { - const input = patch.inputs[inputName]; - if (input[0] === Patch.INPUT_MANAGED_CONNECTION) { - this.dropManagedInput(input[1]); - patch.inputs[inputName] = [Patch.INPUT_NONE]; - } - } - - this.managedPatches.splice(this.managedPatches.indexOf(patch), 1); - - return true; + if (patch.manager === this) { + this.managedPatches.push(patch); + return true; + } else { + return false; } + } - addManagedInput(patchWithInput, inputName, patchWithOutput, outputName) { - if (patchWithInput.manager !== this || patchWithOutput.manager !== this) { - throw new Error(`Input and output patches must belong to same manager (this)`); - } - - const input = patchWithInput.inputs[inputName]; - if (input[0] === Patch.INPUT_MANAGED_CONNECTION) { - this.managedInputs[input[1]] = [patchWithOutput, outputName, {}]; - } else { - const key = this.getManagedConnectionIdentifier(); - this.managedInputs[key] = [patchWithOutput, outputName, {}]; - patchWithInput.inputs[inputName] = [Patch.INPUT_MANAGED_CONNECTION, key]; - } - - return true; + removeManagedPatch(patch) { + if (patch.manager !== this) { + return false; } - dropManagedInput(identifier) { - return delete this.managedInputs[key]; + patch.manager = null; + + if (patch.manager === this) { + return false; } - getManagedInput(identifier) { - const connection = this.managedInputs[identifier]; - const patch = connection[0]; - const outputName = connection[1]; - const memory = connection[2]; - return this.computeManagedInput(patch, outputName, memory); + for (const inputName of patch.inputNames) { + const input = patch.inputs[inputName]; + if (input[0] === Patch.INPUT_MANAGED_CONNECTION) { + this.dropManagedInput(input[1]); + patch.inputs[inputName] = [Patch.INPUT_NONE]; + } } - computeManagedInput(patch, outputName, memory) { - // Override this function in subclasses to alter behavior of the "wire" - // used for connecting patches. + this.managedPatches.splice(this.managedPatches.indexOf(patch), 1); - const output = patch.computeOutputs()[outputName]; - switch (output[0]) { - case Patch.OUTPUT_UNAVAILABLE: - return [Patch.INPUT_UNAVAILABLE]; - case Patch.OUTPUT_AVAILABLE: - return [Patch.INPUT_AVAILABLE, output[1]]; - } - } + return true; + } - #managedConnectionIdentifier = 0; - getManagedConnectionIdentifier() { - return this.#managedConnectionIdentifier++; + addManagedInput(patchWithInput, inputName, patchWithOutput, outputName) { + if (patchWithInput.manager !== this || patchWithOutput.manager !== this) { + throw new Error(`Input and output patches must belong to same manager (this)`); } - addExternalInput(patchWithInput, patchInputName, managerInputName) { - return this.addManagedInput(patchWithInput, patchInputName, this.#externalInputPatch, managerInputName); + const input = patchWithInput.inputs[inputName]; + if (input[0] === Patch.INPUT_MANAGED_CONNECTION) { + this.managedInputs[input[1]] = [patchWithOutput, outputName, {}]; + } else { + const key = this.getManagedConnectionIdentifier(); + this.managedInputs[key] = [patchWithOutput, outputName, {}]; + patchWithInput.inputs[inputName] = [Patch.INPUT_MANAGED_CONNECTION, key]; } - setExternalOutput(managerOutputName, patchWithOutput, patchOutputName) { - return this.addManagedInput(this.#externalOutputPatch, managerOutputName, patchWithOutput, patchOutputName); - } - - compute(inputs, outputs) { - Object.assign(outputs, this.#externalOutputPatch.computeOutputs()); + return true; + } + + dropManagedInput(identifier) { + return delete this.managedInputs[identifier]; + } + + getManagedInput(identifier) { + const connection = this.managedInputs[identifier]; + const patch = connection[0]; + const outputName = connection[1]; + const memory = connection[2]; + return this.computeManagedInput(patch, outputName, memory); + } + + computeManagedInput(patch, outputName) { + // Override this function in subclasses to alter behavior of the "wire" + // used for connecting patches. + + const output = patch.computeOutputs()[outputName]; + switch (output[0]) { + case Patch.OUTPUT_UNAVAILABLE: + return [Patch.INPUT_UNAVAILABLE]; + case Patch.OUTPUT_AVAILABLE: + return [Patch.INPUT_AVAILABLE, output[1]]; } + } + + #managedConnectionIdentifier = 0; + getManagedConnectionIdentifier() { + return this.#managedConnectionIdentifier++; + } + + addExternalInput(patchWithInput, patchInputName, managerInputName) { + return this.addManagedInput( + patchWithInput, + patchInputName, + this.#externalInputPatch, + managerInputName + ); + } + + setExternalOutput(managerOutputName, patchWithOutput, patchOutputName) { + return this.addManagedInput( + this.#externalOutputPatch, + managerOutputName, + patchWithOutput, + patchOutputName + ); + } + + compute(inputs, outputs) { + Object.assign(outputs, this.#externalOutputPatch.computeOutputs()); + } } class PatchManagerExternalInputPatch extends Patch { - constructor({manager, ...rest}) { - super({ - manager, - inputNames: manager.inputNames, - outputNames: manager.inputNames, - ...rest - }); - } - - computeInputs() { - return this.manager.computeInputs(); - } - - compute(inputs, outputs) { - for (const name of this.inputNames) { - const input = inputs[name]; - switch (input[0]) { - case Patch.INPUT_UNAVAILABLE: - outputs[name] = [Patch.OUTPUT_UNAVAILABLE]; - break; - case Patch.INPUT_AVAILABLE: - outputs[name] = [Patch.INPUT_AVAILABLE, input[1]]; - break; - } - } + constructor({manager, ...rest}) { + super({ + manager, + inputNames: manager.inputNames, + outputNames: manager.inputNames, + ...rest, + }); + } + + computeInputs() { + return this.manager.computeInputs(); + } + + compute(inputs, outputs) { + for (const name of this.inputNames) { + const input = inputs[name]; + switch (input[0]) { + case Patch.INPUT_UNAVAILABLE: + outputs[name] = [Patch.OUTPUT_UNAVAILABLE]; + break; + case Patch.INPUT_AVAILABLE: + outputs[name] = [Patch.INPUT_AVAILABLE, input[1]]; + break; + } } + } } class PatchManagerExternalOutputPatch extends Patch { - constructor({manager, ...rest}) { - super({ - manager, - inputNames: manager.outputNames, - outputNames: manager.outputNames, - ...rest - }); - } - - compute(inputs, outputs) { - for (const name of this.inputNames) { - const input = inputs[name]; - switch (input[0]) { - case Patch.INPUT_UNAVAILABLE: - outputs[name] = [Patch.OUTPUT_UNAVAILABLE]; - break; - case Patch.INPUT_AVAILABLE: - outputs[name] = [Patch.INPUT_AVAILABLE, input[1]]; - break; - } - } + constructor({manager, ...rest}) { + super({ + manager, + inputNames: manager.outputNames, + outputNames: manager.outputNames, + ...rest, + }); + } + + compute(inputs, outputs) { + for (const name of this.inputNames) { + const input = inputs[name]; + switch (input[0]) { + case Patch.INPUT_UNAVAILABLE: + outputs[name] = [Patch.OUTPUT_UNAVAILABLE]; + break; + case Patch.INPUT_AVAILABLE: + outputs[name] = [Patch.INPUT_AVAILABLE, input[1]]; + break; + } } + } } // --> demo const caches = Symbol(); const common = Symbol(); -const hsmusic = Symbol(); Patch[caches] = { - WireCachedPatchManager: class extends PatchManager { - // "Wire" caching for PatchManager: Remembers the last outputs to come - // from each patch. As long as the inputs for a patch do not change, its - // cached outputs are reused. - - // TODO: This has a unique cache for each managed input. It should - // re-use a cache for the same patch and output name. How can we ensure - // the cache is dropped when the patch is removed, though? (Spoilers: - // probably just override removeManagedPatch) - computeManagedInput(patch, outputName, memory) { - let cache = true; - - const { previousInputs } = memory; - const { inputs } = patch; - if (memory.previousInputs) { - for (const inputName of patch.inputNames) { - // TODO: This doesn't account for connections whose values - // have changed (analogous to bubbling cache invalidation). - if (inputs[inputName] !== previousInputs[inputName]) { - cache = false; - break; - } - } - } else { - cache = false; - } - - if (cache) { - return memory.previousOutputs[outputName]; - } - - const outputs = patch.computeOutputs(); - memory.previousOutputs = outputs; - memory.previousInputs = {...inputs}; - return outputs[outputName]; + WireCachedPatchManager: class extends PatchManager { + // "Wire" caching for PatchManager: Remembers the last outputs to come + // from each patch. As long as the inputs for a patch do not change, its + // cached outputs are reused. + + // TODO: This has a unique cache for each managed input. It should + // re-use a cache for the same patch and output name. How can we ensure + // the cache is dropped when the patch is removed, though? (Spoilers: + // probably just override removeManagedPatch) + computeManagedInput(patch, outputName, memory) { + let cache = true; + + const {previousInputs} = memory; + const {inputs} = patch; + if (memory.previousInputs) { + for (const inputName of patch.inputNames) { + // TODO: This doesn't account for connections whose values + // have changed (analogous to bubbling cache invalidation). + if (inputs[inputName] !== previousInputs[inputName]) { + cache = false; + break; + } } - }, + } else { + cache = false; + } + + if (cache) { + return memory.previousOutputs[outputName]; + } + + const outputs = patch.computeOutputs(); + memory.previousOutputs = outputs; + memory.previousInputs = {...inputs}; + return outputs[outputName]; + } + }, }; Patch[common] = { - Stringify: class extends Patch { - static inputNames = ['value']; - static outputNames = ['value']; - - compute(inputs, outputs) { - if (inputs.value[0] === Patch.INPUT_AVAILABLE) { - outputs.value = [Patch.OUTPUT_AVAILABLE, inputs.value[1].toString()]; - } else { - outputs.value = [Patch.OUTPUT_UNAVAILABLE]; - } - } - }, - - Echo: class extends Patch { - static inputNames = ['value']; - static outputNames = ['value']; - - compute(inputs, outputs) { - if (inputs.value[0] === Patch.INPUT_AVAILABLE) { - outputs.value = [Patch.OUTPUT_AVAILABLE, inputs.value[1]]; - } else { - outputs.value = [Patch.OUTPUT_UNAVAILABLE]; - } - } - }, + Stringify: class extends Patch { + static inputNames = ['value']; + static outputNames = ['value']; + + compute(inputs, outputs) { + if (inputs.value[0] === Patch.INPUT_AVAILABLE) { + outputs.value = [Patch.OUTPUT_AVAILABLE, inputs.value[1].toString()]; + } else { + outputs.value = [Patch.OUTPUT_UNAVAILABLE]; + } + } + }, + + Echo: class extends Patch { + static inputNames = ['value']; + static outputNames = ['value']; + + compute(inputs, outputs) { + if (inputs.value[0] === Patch.INPUT_AVAILABLE) { + outputs.value = [Patch.OUTPUT_AVAILABLE, inputs.value[1]]; + } else { + outputs.value = [Patch.OUTPUT_UNAVAILABLE]; + } + } + }, }; const PM = new Patch[caches].WireCachedPatchManager({ - inputNames: ['externalInput'], - outputNames: ['externalOutput'], + inputNames: ['externalInput'], + outputNames: ['externalOutput'], }); const P1 = new Patch[common].Stringify({manager: PM}); |