@stringsync/vexml/dist/esm/util/value.js

MusicXML to Vexflow

/**
 * Value is a wrapper around any arbitrary value that adds functionality to default.
 */
export class Value {
    value;
    defaultValue;
    constructor(value, defaultValue) {
        this.value = value;
        this.defaultValue = defaultValue;
    }
    static of(value) {
        return new Value(value, null);
    }
    /** Returns a new attr with a different default value. */
    withDefault(defaultValue) {
        return new Value(this.value, defaultValue);
    }
    /** Parses the attribute into a string. */
    str() {
        return this.value ?? this.defaultValue;
    }
    /** Parses the attribute into a boolean. */
    bool() {
        switch (this.value) {
            case 'true':
                return true;
            case 'false':
                return false;
            default:
                return this.defaultValue;
        }
    }
    /** Parses the attribute into an integer. */
    int() {
        if (typeof this.value !== 'string') {
            return this.defaultValue;
        }
        const result = parseInt(this.value, 10);
        if (isNaN(result)) {
            return this.defaultValue;
        }
        return result;
    }
    /** Parses the attribute into a float. */
    float() {
        if (typeof this.value !== 'string') {
            return this.defaultValue;
        }
        const result = parseFloat(this.value);
        if (isNaN(result)) {
            return this.defaultValue;
        }
        return result;
    }
    /** Parses the attribute into an enum. */
    enum(e) {
        if (typeof this.value !== 'string') {
            return this.defaultValue;
        }
        if (e.includes(this.value)) {
            return this.value;
        }
        return this.defaultValue;
    }
}