Function getJsonUnionMatchExpression

scripts/codegen/csharp.ts:940–968

(variant: JsonUnionVariant, variants: JsonUnionVariant[])

}

function getJsonUnionMatchExpression(variant: JsonUnionVariant, variants: JsonUnionVariant[]): string | undefined {
    const required = new Set(variant.schema?.required ?? []);
    if (required.size === 0) return undefined;

    const otherRequired = new Set<string>();
    for (const other of variants) {
        if (other === variant) continue;
        for (const property of other.schema?.required ?? []) {
            otherRequired.add(property);
        }
    }

    const present = [...required].filter((property) => !otherRequired.has(property));
    if (present.length === 0) return undefined;

    const absent = new Set<string>();
    for (const other of variants) {
        if (other === variant) continue;
        for (const property of other.schema?.required ?? []) {
            if (!required.has(property)) absent.add(property);
        }
    }

    return [
        "element.ValueKind == JsonValueKind.Object",
        ...present.map((property) => `element.TryGetProperty("${escapeCSharpStringLiteral(property)}", out _)`),
        ...[...absent].sort().map((property) => `!element.TryGetProperty("${escapeCSharpStringLiteral(property)}", out _)`),
    ].join(" && ");
}

function generateJsonUnionClass(className: string, variants: JsonUnionVariant[], description: string | undefined, jsonContextType: string, isInternal: boolean): string {
    const lines: string[] = [];