507 lines
17 KiB
JavaScript
507 lines
17 KiB
JavaScript
import { coerce } from './util.js';
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const LINE_RE = /^(\d{2}) (\S+(?:\.\S+)*) ?(.*)/;
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const DEBUG_RE = /^\d{2} # DEBUG/;
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export function parseAstLog(text) {
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const root = { slot: 'root', parentSlot: null, depth: -1, positionals: [], props: {}, children: [] };
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const stack = [root];
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for (const line of text.split('\n')) {
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if (!line.trim()) continue;
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if (DEBUG_RE.test(line)) continue;
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const m = LINE_RE.exec(line);
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if (!m) continue;
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const depth = parseInt(m[1], 10);
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const slotFull = m[2];
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const rest = m[3] || '';
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const dotIdx = slotFull.indexOf('.');
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let parentSlot = null, slot = slotFull;
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if (dotIdx !== -1) {
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parentSlot = slotFull.slice(0, dotIdx);
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slot = slotFull.slice(dotIdx + 1);
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}
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const { positionals, props } = _parseRest(rest);
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const node = { slot, parentSlot, depth, positionals, props, children: [] };
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while (stack.length > 1 && stack[stack.length - 1].depth >= depth) {
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stack.pop();
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}
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if (depth > stack[stack.length - 1].depth + 1)
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throw new Error(`AST log malformed: depth jump to ${depth} at: ${line}`);
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if (depth > 0 && !slotFull.includes('.'))
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throw new Error(`AST log malformed: missing slot at depth ${depth}: ${line}`);
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stack[stack.length - 1].children.push(node);
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stack.push(node);
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}
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return root;
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}
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const _REST_TOKEN = /(\w+)='([^']*)'|(\w+)=(\S+)|'([^']*)'|(\S+)/g;
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function _parseRest(rest) {
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const positionals = [];
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const props = {};
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let inProps = false;
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for (const [, kq, vq, kb, vb, qpos, bpos] of rest.matchAll(_REST_TOKEN)) {
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if (kq !== undefined) { inProps = true; props[kq] = coerce(vq); }
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else if (kb !== undefined) { inProps = true; props[kb] = coerce(vb); }
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else if (!inProps) { positionals.push(coerce(qpos ?? bpos)); }
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}
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return { positionals, props };
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}
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function _collectUnknownProps(nodeProps, knownKeys) {
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return Object.fromEntries(Object.entries(nodeProps).filter(([k]) => !knownKeys.has(k)));
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}
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export function buildModel(rawTree) {
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const score = {
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type: 'score',
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info: null,
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tuning: null,
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articles: [],
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stageCone: null,
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stageVoices: [],
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instruments: [],
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bars: [],
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};
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// Upstream uses `with deeper_level("articles"):` / `deeper_level("stage"):`
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// implicit containers that emit no depth-00 header. Their depth-01 lines get
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// nested under the preceding `00 tuning` by the depth-stack parser even
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// though they are conceptually siblings of tuning. Un-nest them here.
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const topLevel = [];
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for (const node of rawTree.children) {
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if (node.parentSlot === null && node.slot === 'tuning') {
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const trulyTuning = [];
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const misnested = [];
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for (const child of node.children) {
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if (child.parentSlot === 'tuning') trulyTuning.push(child);
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else misnested.push(child);
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}
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topLevel.push({ ...node, children: trulyTuning });
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topLevel.push(...misnested);
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} else {
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topLevel.push(node);
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}
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}
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for (const node of topLevel) {
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const fqSlot = node.parentSlot ? `${node.parentSlot}.${node.slot}` : node.slot;
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switch (fqSlot) {
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case 'info':
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score.info = { ...node.props };
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break;
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case 'tuning':
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score.tuning = _buildTuning(node);
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break;
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case 'stage.cone':
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score.stageCone = { type: 'stage_cone', ...node.props };
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break;
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case 'stage.voice':
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score.stageVoices.push({
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type: 'stage_voice',
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name: node.positionals[0],
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direction: node.props.direction,
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distance: node.props.distance,
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});
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break;
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case 'instrument':
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score.instruments.push(_buildInstrument(node));
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break;
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case 'bar':
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score.bars.push(_buildBar(node));
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break;
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default:
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if (node.parentSlot === 'articles') {
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_mergeArticleEntry(score, node);
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} else {
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score[node.slot] = _buildGeneric(node);
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}
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}
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}
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return score;
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}
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// Articles are keyed by label. The AST emits one line per (label, subtype)
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// — e.g. `articles.defaults 'f'` and (future) `articles.overwrites 'f'`.
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// We merge them into one entry per label whose properties carry the scope
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// of their originating subtype, so the UI can toggle scope per property.
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function _mergeArticleEntry(score, node) {
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const name = node.positionals[0];
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let entry = score.articles.find(a => a.name === name);
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if (!entry) {
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entry = { type: 'article', name, properties: [] };
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score.articles.push(entry);
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}
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const scope = node.slot; // 'defaults' | 'overwrites' | future subtype
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for (const [key, value] of Object.entries(node.props)) {
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entry.properties.push({ name: key, value, scope });
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}
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return entry;
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}
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function _buildTuning(node) {
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const t = { type: 'tuning', base: node.props.base, scales: {}, chords: {}, frequencyFactors: null };
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for (const child of node.children) {
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if (child.slot === 'scales') {
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t.scales[child.positionals[0]] = child.positionals.slice(1);
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} else if (child.slot === 'chords') {
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t.chords[child.positionals[0]] = child.positionals.slice(1);
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} else if (child.slot === 'frequency_factors') {
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t.frequencyFactors = {
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label: child.props.label ?? null,
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factors: child.positionals.slice(),
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};
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}
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}
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return t;
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}
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function _buildInstrument(node) {
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const instr = {
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type: 'instrument',
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name: node.positionals[0],
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notChangedSince: node.props.NOT_CHANGED_SINCE ?? null,
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isLinked: (node.positionals[0] ?? '').includes('/'),
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isDirty: false,
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variations: [],
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basicProperties: null,
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volumes: null,
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timbre: null,
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fmModulations: [],
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amModulations: [],
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unknownSlots: [],
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};
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for (const child of node.children) {
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switch (child.parentSlot + '.' + child.slot) {
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case 'character.variation':
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instr.variations.push(_buildVariation(child));
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break;
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case 'character.basic_properties':
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instr.basicProperties = _buildBasicProperties(child);
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break;
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case 'VOLUMES.shape':
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instr.volumes = _buildShape(child);
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break;
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case 'TIMBRE.shape':
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instr.timbre = _buildShape(child);
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break;
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case 'FM.modulation':
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instr.fmModulations.push({ ...child.props });
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break;
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case 'AM.modulation':
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instr.amModulations.push({ ...child.props });
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break;
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default:
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instr.unknownSlots.push(_buildGeneric(child));
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}
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}
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return instr;
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}
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function _buildVariation(node) {
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const v = {
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type: 'variation',
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dependsOn: node.props.depends_on ?? node.props.for_value ?? null,
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basicProperties: null,
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labelSpecs: [],
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subvariations: [],
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spread: null,
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railsbackCurve: null,
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unknownSlots: [],
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};
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for (const child of node.children) {
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const key = (child.parentSlot ?? child.slot) + '.' + child.slot;
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switch (key) {
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case 'variation.basic_properties':
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v.basicProperties = _buildBasicProperties(child);
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break;
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case 'variation.label_spec':
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v.labelSpecs.push(_buildLabelSpec(child));
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break;
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case 'variation.subvariation':
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v.subvariations.push(_buildVariation(child));
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break;
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case 'variation.SPREAD':
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v.spread = child.positionals;
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break;
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case 'RAILSBACK_CURVE.shape':
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v.railsbackCurve = _buildShape(child);
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break;
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default:
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v.unknownSlots.push(_buildGeneric(child));
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}
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}
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return v;
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}
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function _buildBasicProperties(node) {
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const bp = {
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type: 'basic_properties',
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A: null, S: null, R: null,
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oscillator: null,
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fmModulations: [],
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amModulations: [],
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unknownSlots: [],
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};
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for (const child of node.children) {
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const fqSlot = (child.parentSlot ?? '') + (child.parentSlot ? '.' : '') + child.slot;
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if (child.parentSlot === 'A' && child.slot === 'shape') {
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bp.A = _buildShape(child);
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} else if (child.parentSlot === 'S' && child.slot === 'shape') {
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bp.S = _buildShape(child);
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} else if (child.parentSlot === 'R' && child.slot === 'shape') {
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bp.R = _buildShape(child);
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} else if (child.parentSlot === 'variation' && child.slot === 'O') {
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bp.oscillator = child.props.ref ?? child.positionals[0];
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} else if (child.parentSlot === 'FM' && child.slot === 'modulation') {
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const fm = { ...child.props };
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const envChild = child.children.find(c => c.slot === 'shape');
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if (envChild) fm.shape = _buildShape(envChild);
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bp.fmModulations.push(fm);
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} else if (child.parentSlot === 'AM' && child.slot === 'modulation') {
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const am = { ...child.props };
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const envChild = child.children.find(c => c.slot === 'shape');
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if (envChild) am.shape = _buildShape(envChild);
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bp.amModulations.push(am);
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} else {
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bp.unknownSlots.push(_buildGeneric(child));
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}
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}
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return bp;
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}
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function _buildLabelSpec(node) {
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const ls = {
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type: 'label_spec',
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label: node.positionals[0],
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basicProperties: null,
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unknownSlots: [],
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};
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const directBpChildren = [];
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for (const child of node.children) {
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if (child.parentSlot === 'variation' && child.slot === 'basic_properties') {
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ls.basicProperties = _buildBasicProperties(child);
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} else if (
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(child.slot === 'shape' && (child.parentSlot === 'A' || child.parentSlot === 'S' || child.parentSlot === 'R')) ||
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(child.parentSlot === 'variation' && child.slot === 'O') ||
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(child.parentSlot === 'FM' && child.slot === 'modulation')
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) {
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directBpChildren.push(child);
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} else {
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ls.unknownSlots.push(_buildGeneric(child));
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}
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}
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if (!ls.basicProperties && directBpChildren.length > 0) {
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ls.basicProperties = _buildBasicProperties({ children: directBpChildren });
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}
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return ls;
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}
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function _buildShape(node) {
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return {
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type: 'shape',
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length: node.props.length,
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start: node.props.start,
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coords: node.children
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.filter(c => c.slot === 'coords')
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.map(c => ({
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x: c.props.x,
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y: c.props.y,
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z: c.props.z ?? 1,
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isSharp: c.props.is_sharp ?? false,
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})),
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};
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}
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function _buildBar(node) {
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const bar = {
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type: 'bar',
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id: node.positionals[0] ?? '',
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isDirty: false,
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stressor: null,
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tempoShape: null,
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tempoLevels: null,
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lowerStressBound: null,
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upperStressBound: null,
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tunings: [],
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voices: {},
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unknownSlots: [],
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};
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for (const child of node.children) {
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const fqSlot = (child.parentSlot ?? '') + (child.parentSlot ? '.' : '') + child.slot;
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switch (fqSlot) {
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case 'stress_pattern.stressor':
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bar.stressor = _buildStressor(child);
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break;
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case 'tempo.shape':
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bar.tempoShape = _buildShape(child);
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break;
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case 'tempo.levels':
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bar.tempoLevels = child.positionals[0];
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break;
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case 'lower_stress_bound.shape':
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bar.lowerStressBound = _buildShape(child);
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break;
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case 'upper_stress_bound.shape':
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bar.upperStressBound = _buildShape(child);
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break;
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case 'bar.tuning':
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bar.tunings.push({ ...child.props });
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break;
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case 'bar.voice':
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bar.voices[child.positionals[0]] = _buildVoice(child);
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break;
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default:
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bar.unknownSlots.push(_buildGeneric(child));
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}
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}
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return bar;
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}
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function _buildStressor(node) {
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const levels = [];
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let currentGroup = [];
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for (const child of node.children) {
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if (child.slot === 'level') {
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currentGroup.push(parseInt(child.positionals[0]));
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} else if (child.slot === 'subdivision') {
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levels.push(currentGroup);
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currentGroup = [];
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}
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}
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if (currentGroup.length) levels.push(currentGroup);
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return { type: 'stressor', groups: levels };
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}
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function _buildVoice(node) {
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const voice = {
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type: 'voice',
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name: node.positionals[0],
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offsets: [],
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articles: [],
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motifs: [],
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};
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for (const child of node.children) {
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const fqSlot = (child.parentSlot ?? '') + (child.parentSlot ? '.' : '') + child.slot;
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switch (fqSlot) {
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case 'voice.offset':
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voice.offsets.push(_buildOffset(child));
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break;
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case 'voice.article':
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voice.articles.push(child.positionals[0]);
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break;
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case 'voice.motif':
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voice.motifs.push(_buildMotif(child));
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break;
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default:
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// ignore
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}
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}
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return voice;
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}
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function _buildOffset(node) {
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const offset = {
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type: 'offset',
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tick: node.props.tick,
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stemNotes: [],
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motifRefs: [],
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unknownProps: _collectUnknownProps(node.props, new Set(['tick'])),
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};
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for (const child of node.children) {
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if (child.parentSlot === 'line' && child.slot === 'stem_note')
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offset.stemNotes.push(_buildStemNote(child));
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else if (child.parentSlot === 'line' && child.slot === 'motif')
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offset.motifRefs.push({ label: child.positionals[0], chord: child.props.chord ?? null });
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}
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return offset;
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}
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function _buildStemNote(node) {
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const KNOWN = new Set(['pitch', 'eff_length', 'adj_stress', 'adjacent']);
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const chainNode = node.children.find(c => c.parentSlot === 'stem_note' && c.slot === 'chain');
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const writeToNode = node.children.find(c => c.parentSlot === 'stem_note' && c.slot === 'write_to');
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return {
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type: 'stem_note',
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pitch: node.props.pitch,
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effLength: node.props.eff_length ?? null,
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adjacent: node.props.adjacent ?? null,
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adjStress: node.props.adj_stress ?? null,
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length: null,
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weight: null,
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chainText: chainNode?.props._tmp_string ?? '',
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writeToName: writeToNode?.positionals[0] ?? null,
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clauses: (chainNode?.children ?? [])
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.filter(c => c.parentSlot === 'chain' && c.slot === 'clause')
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.map(_buildClause),
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isDirty: false,
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unknownProps: _collectUnknownProps(node.props, KNOWN),
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};
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}
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function _buildClause(node) {
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return {
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type: 'clause',
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index: node.positionals[0] ?? 0,
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repeat: node.props.repeat ?? null,
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notes: node.children.filter(c => c.slot === 'note' && c.parentSlot === 'seq').map(c => ({ ...c.props })),
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pauses: node.children.filter(c => c.slot === 'pause' && c.parentSlot === 'seq').map(c => ({ length: c.props.length })),
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stacks: node.children.filter(c => c.slot === 'stack' && c.parentSlot === 'seq').map(c => ({
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length: c.props.length, netlength: c.props.netlength,
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notes: c.children.filter(cn => cn.slot === 'note').map(cn => ({ ...cn.props })),
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})),
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};
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}
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function _buildMotif(node) {
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const m = {
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type: 'motif',
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label: node.props.label,
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stemNotes: [],
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unknownProps: _collectUnknownProps(node.props, new Set(['label'])),
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};
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for (const child of node.children) {
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if (child.parentSlot === 'line' && child.slot === 'stem_note')
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m.stemNotes.push(_buildStemNote(child));
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}
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m.isStatic = m.stemNotes.length > 0 && !m.stemNotes.some(sn => Number.isInteger(sn.pitch));
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return m;
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}
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function _buildGeneric(node) {
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return {
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type: node.slot,
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parentSlot: node.parentSlot,
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depth: node.depth,
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positionals: node.positionals,
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props: node.props,
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children: node.children.map(_buildGeneric),
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};
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}
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