Method read

javascript/packages/core/lib/gen/union.ts:185–206

(assignStmt: (v: string) => string, refState: string)

  }

  read(assignStmt: (v: string) => string, refState: string): string {
    void refState;
    const caseIndex = this.scope.uniqueName("caseIndex");
    const refFlag = this.scope.uniqueName("refFlag");
    const unionValue = this.scope.uniqueName("unionValue");
    const caseInfo = this.scope.uniqueName("caseInfo");
    const result = this.scope.uniqueName("result");
    return `
      const ${caseIndex} = ${this.builder.reader.readVarUInt32()};
      const ${refFlag} = ${this.builder.reader.readInt8()};
      let ${unionValue} = null;
      if (${refFlag} === ${RefFlags.NullFlag}) {
        ${unionValue} = null;
      } else if (${refFlag} === ${RefFlags.RefFlag}) {
        ${unionValue} = ${this.builder.referenceResolver.getReadRef(this.builder.reader.readVarUInt32())};
      } else {
        ${this.readDeclaredCases(caseIndex, unionValue, refFlag, caseInfo)}
      }
      const ${result} = { case: ${caseIndex}, value: ${unionValue} };
      ${assignStmt(result)}
    `;
  }

  writeTypeInfo(): string {
    const internalTypeId = this.typeInfo._typeId;