@stringsync/vexml
Version:
MusicXML to Vexflow
64 lines (63 loc) • 1.89 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.TextStateMachine = void 0;
/** A state machine for calculating the text that should come from a <lyric> element. */
class TextStateMachine {
state = 'INITIAL';
parts = new Array();
process(component) {
switch (this.state) {
case 'INITIAL':
this.processInitial(component);
break;
case 'IN_SYLLABLE':
this.processInSyllable(component);
break;
case 'AFTER_SYLLABLE':
this.processAfterSyllable(component);
break;
}
}
getText() {
return this.parts.join('');
}
processInitial(component) {
switch (component.type) {
case 'syllabic':
switch (component.value) {
case 'begin':
case 'middle':
this.state = 'IN_SYLLABLE';
break;
}
break;
case 'text':
this.parts.push(component.value);
break;
}
}
processInSyllable(component) {
switch (component.type) {
case 'syllabic':
switch (component.value) {
case 'single':
case 'end':
this.state = 'AFTER_SYLLABLE';
break;
}
break;
case 'text':
this.parts.push(component.value);
break;
}
}
processAfterSyllable(component) {
switch (component.type) {
case 'elision':
this.parts.push(component.value);
this.state = 'INITIAL';
break;
}
}
}
exports.TextStateMachine = TextStateMachine;