public boolean coercesTo()

in zetasql-toolkit-core/src/main/java/com/google/zetasql/toolkit/Coercer.java [470:509]

31 lines of code
11 McCabe index (conditional complexity)


  public boolean coercesTo(Type fromType, Type toType, boolean isLiteral, boolean isParameter) {
    if (fromType.isStruct()) {
      return structCoercesTo((StructType) fromType, toType, isLiteral, isParameter);
    }

    if (fromType.isArray()) {
      return arrayCoercesTo((ArrayType) fromType, toType, isLiteral, isParameter);
    }

    if (!fromType.isSimpleType() && !toType.isSimpleType()) {
      return fromType.equivalent(toType);
    }

    TypeKind fromKind = fromType.getKind();
    TypeKind toKind = toType.getKind();

    Optional<CoercionMode> maybeCoercionMode =
        supportedTypeCoercions.stream()
            .filter(
                typeCoercion ->
                    typeCoercion.fromKind.equals(fromKind) && typeCoercion.toKind.equals(toKind))
            .map(typeCoercion -> typeCoercion.coercionMode)
            .findFirst();

    if (!maybeCoercionMode.isPresent()) {
      return false;
    }

    CoercionMode coercionMode = maybeCoercionMode.get();

    if (isLiteral && supportsLiteralCoercion(coercionMode)) {
      return true;
    }

    if (isParameter && supportsParameterCoercion(coercionMode)) {
      return true;
    }

    return supportsImplicitCoercion(coercionMode);
  }