org.web3j.abi.datatypes.Fixed Java Examples

The following examples show how to use org.web3j.abi.datatypes.Fixed. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: TypeDecoder.java From client-sdk-java with Apache License 2.0

6 votes

static <T extends NumericType> T decodeNumeric(String input, Class<T> type) {
    try {
        byte[] inputByteArray = Numeric.hexStringToByteArray(input);
        int typeLengthAsBytes = getTypeLengthInBytes(type);

        byte[] resultByteArray = new byte[typeLengthAsBytes + 1];

        if (Int.class.isAssignableFrom(type) || Fixed.class.isAssignableFrom(type)) {
            resultByteArray[0] = inputByteArray[0];  // take MSB as sign bit
        }

        int valueOffset = Type.MAX_BYTE_LENGTH - typeLengthAsBytes;
        System.arraycopy(inputByteArray, valueOffset, resultByteArray, 1, typeLengthAsBytes);

        BigInteger numericValue = new BigInteger(resultByteArray);
        return type.getConstructor(BigInteger.class).newInstance(numericValue);

    } catch (NoSuchMethodException | SecurityException
            | InstantiationException | IllegalAccessException
            | IllegalArgumentException | InvocationTargetException e) {
        throw new UnsupportedOperationException(
                "Unable to create instance of " + type.getName(), e);
    }
}

Example #2

Source File: UtilsTest.java From client-sdk-java with Apache License 2.0

6 votes

@Test
public void testGetTypeName() throws ClassNotFoundException {
    assertThat(Utils.getTypeName(new TypeReference<Uint>(){}), is("uint256"));
    assertThat(Utils.getTypeName(new TypeReference<Int>(){}), is("int256"));
    assertThat(Utils.getTypeName(new TypeReference<Ufixed>(){}), is("ufixed256"));
    assertThat(Utils.getTypeName(new TypeReference<Fixed>(){}), is("fixed256"));

    assertThat(Utils.getTypeName(new TypeReference<Uint64>(){}), is("uint64"));
    assertThat(Utils.getTypeName(new TypeReference<Int64>(){}), is("int64"));
    assertThat(Utils.getTypeName(new TypeReference<Bool>(){}), is("bool"));
    assertThat(Utils.getTypeName(new TypeReference<Utf8String>(){}), is("string"));
    assertThat(Utils.getTypeName(new TypeReference<DynamicBytes>(){}), is("bytes"));

    assertThat(Utils.getTypeName(
            new TypeReference.StaticArrayTypeReference<StaticArray<Uint>>(5){}),
            is("uint256[5]"));
    assertThat(Utils.getTypeName(
            new TypeReference<DynamicArray<Uint>>(){}),
            is("uint256[]"));
}

Example #3

Source File: TypeDecoder.java From etherscan-explorer with GNU General Public License v3.0

6 votes

static <T extends NumericType> T decodeNumeric(String input, Class<T> type) {
    try {
        byte[] inputByteArray = Numeric.hexStringToByteArray(input);
        int typeLengthAsBytes = getTypeLengthInBytes(type);

        byte[] resultByteArray = new byte[typeLengthAsBytes + 1];

        if (Int.class.isAssignableFrom(type) || Fixed.class.isAssignableFrom(type)) {
            resultByteArray[0] = inputByteArray[0];  // take MSB as sign bit
        }

        int valueOffset = Type.MAX_BYTE_LENGTH - typeLengthAsBytes;
        System.arraycopy(inputByteArray, valueOffset, resultByteArray, 1, typeLengthAsBytes);

        BigInteger numericValue = new BigInteger(resultByteArray);
        return type.getConstructor(BigInteger.class).newInstance(numericValue);

    } catch (NoSuchMethodException | SecurityException
            | InstantiationException | IllegalAccessException
            | IllegalArgumentException | InvocationTargetException e) {
        throw new UnsupportedOperationException(
                "Unable to create instance of " + type.getName(), e);
    }
}

Example #4

Source File: UtilsTest.java From etherscan-explorer with GNU General Public License v3.0

6 votes

@Test
public void testGetTypeName() throws ClassNotFoundException {
    assertThat(Utils.getTypeName(new TypeReference<Uint>(){}), is("uint256"));
    assertThat(Utils.getTypeName(new TypeReference<Int>(){}), is("int256"));
    assertThat(Utils.getTypeName(new TypeReference<Ufixed>(){}), is("ufixed256"));
    assertThat(Utils.getTypeName(new TypeReference<Fixed>(){}), is("fixed256"));

    assertThat(Utils.getTypeName(new TypeReference<Uint64>(){}), is("uint64"));
    assertThat(Utils.getTypeName(new TypeReference<Int64>(){}), is("int64"));
    assertThat(Utils.getTypeName(new TypeReference<Bool>(){}), is("bool"));
    assertThat(Utils.getTypeName(new TypeReference<Utf8String>(){}), is("string"));
    assertThat(Utils.getTypeName(new TypeReference<DynamicBytes>(){}), is("bytes"));

    assertThat(Utils.getTypeName(
            new TypeReference.StaticArrayTypeReference<StaticArray<Uint>>(5){}),
            is("uint256[5]"));
    assertThat(Utils.getTypeName(
            new TypeReference<DynamicArray<Uint>>(){}),
            is("uint256[]"));
}

Example #5

Source File: Utils.java From web3j with Apache License 2.0

6 votes

static String getSimpleTypeName(Class<?> type) {
    String simpleName = type.getSimpleName().toLowerCase();

    if (type.equals(Uint.class)
            || type.equals(Int.class)
            || type.equals(Ufixed.class)
            || type.equals(Fixed.class)) {
        return simpleName + "256";
    } else if (type.equals(Utf8String.class)) {
        return "string";
    } else if (type.equals(DynamicBytes.class)) {
        return "bytes";
    } else {
        return simpleName;
    }
}

Example #6

Source File: UtilsTest.java From web3j with Apache License 2.0

6 votes

@Test
public void testGetTypeName() {
    assertEquals(Utils.getTypeName(new TypeReference<Uint>() {}), ("uint256"));
    assertEquals(Utils.getTypeName(new TypeReference<Int>() {}), ("int256"));
    assertEquals(Utils.getTypeName(new TypeReference<Ufixed>() {}), ("ufixed256"));
    assertEquals(Utils.getTypeName(new TypeReference<Fixed>() {}), ("fixed256"));

    assertEquals(Utils.getTypeName(new TypeReference<Uint64>() {}), ("uint64"));
    assertEquals(Utils.getTypeName(new TypeReference<Int64>() {}), ("int64"));
    assertEquals(Utils.getTypeName(new TypeReference<Bool>() {}), ("bool"));
    assertEquals(Utils.getTypeName(new TypeReference<Utf8String>() {}), ("string"));
    assertEquals(Utils.getTypeName(new TypeReference<DynamicBytes>() {}), ("bytes"));

    assertEquals(
            Utils.getTypeName(
                    new TypeReference.StaticArrayTypeReference<StaticArray<Uint>>(5) {}),
            ("uint256[5]"));
    assertEquals(Utils.getTypeName(new TypeReference<DynamicArray<Uint>>() {}), ("uint256[]"));
}

Example #7

Source File: Utils.java From client-sdk-java with Apache License 2.0

5 votes

static String getSimpleTypeName(Class<?> type) {
    String simpleName = type.getSimpleName().toLowerCase();

    if (type.equals(Uint.class) || type.equals(Int.class)
            || type.equals(Ufixed.class) || type.equals(Fixed.class)) {
        return simpleName + "256";
    } else if (type.equals(Utf8String.class)) {
        return "string";
    } else if (type.equals(DynamicBytes.class)) {
        return "bytes";
    } else {
        return simpleName;
    }
}

Example #8

Source File: AbiTypesMapperGenerator.java From client-sdk-java with Apache License 2.0

5 votes

private MethodSpec.Builder generateFixedTypes(MethodSpec.Builder builder, String packageName) {
    for (int mBitSize = 8, nBitSize = Type.MAX_BIT_LENGTH - 8;
            mBitSize < Type.MAX_BIT_LENGTH && nBitSize > 0;
            mBitSize += 8, nBitSize -= 8) {
        String suffix = mBitSize + "x" + nBitSize;
        builder = addStatement(
                builder, packageName, Ufixed.TYPE_NAME + suffix,
                Ufixed.class.getSimpleName() + suffix);
        builder = addStatement(
                builder, packageName, Fixed.TYPE_NAME + suffix,
                Fixed.class.getSimpleName() + suffix);
    }
    return builder;
}

Example #9

Source File: Utils.java From etherscan-explorer with GNU General Public License v3.0

5 votes

static String getSimpleTypeName(Class<?> type) {
    String simpleName = type.getSimpleName().toLowerCase();

    if (type.equals(Uint.class) || type.equals(Int.class)
            || type.equals(Ufixed.class) || type.equals(Fixed.class)) {
        return simpleName + "256";
    } else if (type.equals(Utf8String.class)) {
        return "string";
    } else if (type.equals(DynamicBytes.class)) {
        return "bytes";
    } else {
        return simpleName;
    }
}

Example #10

Source File: AbiTypesMapperGenerator.java From etherscan-explorer with GNU General Public License v3.0

5 votes

private MethodSpec.Builder generateFixedTypes(MethodSpec.Builder builder, String packageName) {
    for (int mBitSize = 8, nBitSize = Type.MAX_BIT_LENGTH - 8;
            mBitSize < Type.MAX_BIT_LENGTH && nBitSize > 0;
            mBitSize += 8, nBitSize -= 8) {
        String suffix = mBitSize + "x" + nBitSize;
        builder = addStatement(
                builder, packageName, Ufixed.TYPE_NAME + suffix,
                Ufixed.class.getSimpleName() + suffix);
        builder = addStatement(
                builder, packageName, Fixed.TYPE_NAME + suffix,
                Fixed.class.getSimpleName() + suffix);
    }
    return builder;
}

Example #11

Source File: TypeDecoder.java From web3j with Apache License 2.0

5 votes

static <T extends NumericType> T decodeNumeric(String input, Class<T> type) {
    try {
        byte[] inputByteArray = Numeric.hexStringToByteArray(input);
        int typeLengthAsBytes = getTypeLengthInBytes(type);

        byte[] resultByteArray = new byte[typeLengthAsBytes + 1];

        if (Int.class.isAssignableFrom(type) || Fixed.class.isAssignableFrom(type)) {
            resultByteArray[0] = inputByteArray[0]; // take MSB as sign bit
        }

        int valueOffset = Type.MAX_BYTE_LENGTH - typeLengthAsBytes;
        System.arraycopy(inputByteArray, valueOffset, resultByteArray, 1, typeLengthAsBytes);

        BigInteger numericValue = new BigInteger(resultByteArray);
        return type.getConstructor(BigInteger.class).newInstance(numericValue);

    } catch (NoSuchMethodException
            | SecurityException
            | InstantiationException
            | IllegalAccessException
            | IllegalArgumentException
            | InvocationTargetException e) {
        throw new UnsupportedOperationException(
                "Unable to create instance of " + type.getName(), e);
    }
}