Example usage for org.objectweb.asm MethodVisitor visitLabel

List of usage examples for org.objectweb.asm MethodVisitor visitLabel

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitLabel.

Prototype

public void visitLabel(final Label label)

Source Link

Document

Visits a label.

Usage

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

protected void generateReadStaticGroupForType(final Schema schema, ClassVisitor cv,
        final String genClassInternalName, final boolean javaClassCodec) {
    for (final GroupDef group : schema.getGroups()) {
        Object groupType = group.getGroupType();
        String groupDescriptor = getTypeDescriptor(groupType, javaClassCodec);
        final MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, "readStaticGroup_" + group.getName(),
                "(Lcom/cinnober/msgcodec/io/ByteSource;" + groupDescriptor + ")V", null,
                new String[] { "java/io/IOException" });
        mv.visitCode();/*from ww  w.  j  a  va  2s  .  c  om*/
        final LocalVariable nextVar = new LocalVariable(3);

        // read fields of super group
        if (group.getSuperGroup() != null) {
            GroupDef superGroup = schema.getGroup(group.getSuperGroup());
            Object superGroupType = superGroup.getGroupType();
            String superGroupDescriptor = getTypeDescriptor(superGroupType, javaClassCodec);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitVarInsn(ALOAD, 2);
            mv.visitMethodInsn(INVOKEVIRTUAL, genClassInternalName, "readStaticGroup_" + superGroup.getName(),
                    "(Lcom/cinnober/msgcodec/io/ByteSource;" + superGroupDescriptor + ")V", false);
        }

        // fields
        for (final FieldDef field : group.getFields()) {
            final Class<?> javaClass = field.getJavaClass();

            Runnable readValue = () -> {
                Label tryStart = new Label();
                Label tryEnd = new Label();
                Label tryCatch = new Label();
                Label tryAfter = new Label();
                mv.visitTryCatchBlock(tryStart, tryEnd, tryCatch, "java/lang/Exception");

                mv.visitLabel(tryStart);
                mv.visitVarInsn(ALOAD, 1); // input stream
                generateDecodeValue(mv, 1, nextVar, field.isRequired(), field.getType(), javaClass,
                        field.getComponentJavaClass(), schema, genClassInternalName,
                        group.getName() + "_" + field.getName(), group.getName() + "." + field.getName(),
                        javaClassCodec);
                mv.visitLabel(tryEnd);
                mv.visitJumpInsn(GOTO, tryAfter);
                mv.visitLabel(tryCatch);
                int caughtExVar = nextVar.next();
                mv.visitVarInsn(ASTORE, caughtExVar);
                mv.visitTypeInsn(NEW, "com/cinnober/msgcodec/blink/FieldDecodeException");
                mv.visitInsn(DUP);
                mv.visitLdcInsn(field.getName());
                mv.visitVarInsn(ALOAD, caughtExVar);
                mv.visitMethodInsn(INVOKESPECIAL, "com/cinnober/msgcodec/blink/FieldDecodeException", "<init>",
                        "(Ljava/lang/String;Ljava/lang/Throwable;)V", false);
                mv.visitInsn(ATHROW);
                mv.visitLabel(tryAfter);
            };

            Accessor<?, ?> accessor = field.getAccessor();
            if (isPublicFieldAccessor(accessor)) {
                Field f = ((FieldAccessor) accessor).getField();
                mv.visitVarInsn(ALOAD, 2); // instance
                // value
                readValue.run();
                // store
                mv.visitFieldInsn(PUTFIELD, Type.getInternalName(f.getDeclaringClass()), f.getName(),
                        Type.getDescriptor(f.getType()));
            } else if (accessor.getClass() == CreateAccessor.class) {
                mv.visitVarInsn(ALOAD, 2); // instance

                Label tryStart = new Label();
                Label tryEnd = new Label();
                Label tryCatch = new Label();
                Label tryAfter = new Label();
                mv.visitTryCatchBlock(tryStart, tryEnd, tryCatch, "java/lang/Exception");

                mv.visitLabel(tryStart);
                mv.visitVarInsn(ALOAD, 1); // input stream

                generateDecodeDummy(mv, 1, nextVar, field.isRequired(), field.getType(), javaClass,
                        field.getComponentJavaClass(), schema, genClassInternalName,
                        group.getName() + "." + field.getName(), javaClassCodec);

                mv.visitInsn(POP);

                mv.visitLabel(tryEnd);
                mv.visitJumpInsn(GOTO, tryAfter);
                mv.visitLabel(tryCatch);
                int caughtExVar = nextVar.next();
                mv.visitVarInsn(ASTORE, caughtExVar);
                mv.visitTypeInsn(NEW, "com/cinnober/msgcodec/blink/FieldDecodeException");
                mv.visitInsn(DUP);
                mv.visitLdcInsn(field.getName());
                mv.visitVarInsn(ALOAD, caughtExVar);
                mv.visitMethodInsn(INVOKESPECIAL, "com/cinnober/msgcodec/blink/FieldDecodeException", "<init>",
                        "(Ljava/lang/String;Ljava/lang/Throwable;)V", false);
                mv.visitInsn(ATHROW);
                mv.visitLabel(tryAfter);

                mv.visitInsn(POP);
            } else {
                // accessor
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, genClassInternalName,
                        "accessor_" + group.getName() + "_" + field.getName(),
                        "Lcom/cinnober/msgcodec/Accessor;");
                // instance
                mv.visitVarInsn(ALOAD, 2); // instance
                // value
                readValue.run();
                if (javaClass.isPrimitive()) {
                    box(mv, javaClass);
                }
                // store
                mv.visitMethodInsn(INVOKEINTERFACE, "com/cinnober/msgcodec/Accessor", "setValue",
                        "(Ljava/lang/Object;Ljava/lang/Object;)V", true);
            }
        }

        mv.visitInsn(RETURN);
        mv.visitMaxs(6, nextVar.get());
        mv.visitEnd();
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

/**
 * Generate instructions to encode the specified value type.
 * The values on the stack are; the output stream and the value to be encoded.
 * After this call these values are expected to be consumed.
 *
 * @param mv the method visitor, open for code instructions.
 * @param outputStreamVar the variable instance that contains the output stream.
 * @param nextVar the next variable//ww  w. java 2s . co m
 * @param required true if the field is required, otherwise false.
 * @param type the field type
 * @param javaClass the field java class
 * @param componentJavaClass the field component java class, or null if not a sequence type
 * @param schema the protocol schema, not null
 * @param genClassInternalName the internal name of the generated class
 */
protected void generateEncodeValue(MethodVisitor mv, int outputStreamVar, LocalVariable nextVar,
        boolean required, TypeDef type, Class<?> javaClass, Class<?> componentJavaClass, Schema schema,
        String genClassInternalName, String fieldIdentifier, String debugValueLabel, boolean javaClassCodec) {

    type = schema.resolveToType(type, false);
    GroupDef refGroup = schema.resolveToGroup(type);

    if (javaClass.isPrimitive() && !required) {
        box(mv, javaClass);
    } else if (!javaClass.isPrimitive() && required) {
        mv.visitInsn(DUP);
        Label notNullLabel = new Label();
        mv.visitJumpInsn(IFNONNULL, notNullLabel);
        mv.visitInsn(POP); // output stream
        mv.visitLdcInsn(debugValueLabel);
        mv.visitMethodInsn(INVOKESTATIC, baseclassIName, "missingRequiredValue",
                "(Ljava/lang/String;)Ljava/lang/IllegalArgumentException;", false);
        mv.visitInsn(ATHROW);
        mv.visitLabel(notNullLabel);
        unbox(mv, javaClass);
    }
    switch (type.getType()) {
    case INT8:
        generateEncodeInt8Value(required, mv);
        break;
    case UINT8:
        generateEncodeUInt8Value(required, mv);
        break;
    case CHAR:
        generateEncodeCharacterValue(required, mv);
        break;
    case INT16:
        generateEncodeInt16Value(required, mv);
        break;
    case UINT16:
        generateEncodeUInt16Value(required, mv);
        break;
    case INT32:
        generateEncodeInt32Value(required, mv);
        break;
    case UINT32:
        generateEncodeUInt32Value(required, mv);
        break;
    case INT64:
        generateEncodeInt64Value(required, mv);
        break;
    case UINT64:
        generateEncodeUInt64Value(required, mv);
        break;
    case FLOAT32:
        generateEncodeFloat32Value(required, mv);
        break;
    case FLOAT64:
        generateEncodeFloat64Value(required, mv);
        break;
    case BIGINT:
        generateEncodeBigIntValue(required, mv);
        break;
    case DECIMAL:
        generateEncodeDecimalValue(required, mv);
        break;
    case BIGDECIMAL:
        generateEncodeBigDecimalValue(required, mv);
        break;
    case STRING:
        generateEncodeStringValue((TypeDef.StringUnicode) type, required, mv);
        break;
    case BINARY:
        generateEncodeBinaryValue((TypeDef.Binary) type, required, mv);
        break;
    case BOOLEAN:
        generateEncodeBooleanValue(required, mv);
        break;
    case ENUM:
        generateEncodeEnumValue((TypeDef.Enum) type, genClassInternalName, fieldIdentifier, nextVar, javaClass,
                required, mv, debugValueLabel);
        break;
    case TIME:
        generateEncodeTimeValue((TypeDef.Time) type, javaClass, required, mv);
        break;
    case SEQUENCE:
        generateEncodeSequenceValue(javaClass, nextVar, mv, required, outputStreamVar, componentJavaClass, type,
                schema, genClassInternalName, fieldIdentifier, debugValueLabel, javaClassCodec);
        break;
    case REFERENCE:
        generateEncodeRefValue(refGroup, required, nextVar, mv, genClassInternalName, outputStreamVar,
                (TypeDef.Reference) type, javaClassCodec);
        break;
    case DYNAMIC_REFERENCE:
        generateEncodeDynRefValue(nextVar, mv, required);
        break;
    default:
        throw new RuntimeException("Unhandled case: " + type.getType());
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

/**
 * Generate value encoding using the blink output.
 *
 * <p>Defaults to <code>writeUInt16Null].</code>
 *
 * @param required true if the field is required, otherwise false.
 * @param mv the method visitor, not null.
 * @see #generateEncodeValue//from www.j  ava  2  s .com
 */
protected void generateEncodeCharacterValue(boolean required, MethodVisitor mv) {
    if (required) {
        mv.visitInsn(I2S);
        mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeUInt16",
                "(Lcom/cinnober/msgcodec/io/ByteSink;S)V", false);
    } else {
        Label nullLabel = new Label();
        mv.visitInsn(DUP);
        mv.visitJumpInsn(IFNULL, nullLabel);
        unbox(mv, Character.class);
        mv.visitInsn(I2S);
        box(mv, Short.class);
        mv.visitLabel(nullLabel);
        mv.visitTypeInsn(CHECKCAST, Type.getInternalName(Short.class));
        mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeUInt16Null",
                "(Lcom/cinnober/msgcodec/io/ByteSink;Ljava/lang/Short;)V", false);
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

protected void generateEncodeRefValue(GroupDef refGroup, boolean required, LocalVariable nextVar,
        MethodVisitor mv, String genClassInternalName, int outputStreamVar, TypeDef.Reference type,
        boolean javaClassCodec) throws IllegalArgumentException {
    if (refGroup != null) {
        Object refGroupType = refGroup.getGroupType();
        String refGroupDescriptor = getTypeDescriptor(refGroupType, javaClassCodec);
        if (required) {
            int instanceVar = nextVar.next();
            mv.visitVarInsn(ASTORE, instanceVar);
            mv.visitVarInsn(ALOAD, 0); // this
            mv.visitInsn(SWAP); // this and out
            mv.visitVarInsn(ALOAD, instanceVar);
            mv.visitMethodInsn(INVOKEVIRTUAL, genClassInternalName, "writeStaticGroup_" + refGroup.getName(),
                    "(Lcom/cinnober/msgcodec/io/ByteSink;" + refGroupDescriptor + ")V", false);
        } else {//from   w  w w .  j  a  v  a  2s .  c  o m
            int instanceVar = nextVar.next();
            mv.visitInsn(DUP);
            Label nonNullLabel = new Label();
            Label endLabel = new Label();
            mv.visitJumpInsn(IFNONNULL, nonNullLabel);
            // null
            mv.visitInsn(POP);
            mv.visitInsn(ICONST_0); // false
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writePresenceByte",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;Z)V", false);
            mv.visitJumpInsn(GOTO, endLabel);

            // not null
            mv.visitLabel(nonNullLabel);
            // PENDING: mv.visitFrame?
            mv.visitVarInsn(ASTORE, instanceVar);
            mv.visitInsn(ICONST_1); // true
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writePresenceByte",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;Z)V", false);
            mv.visitVarInsn(ALOAD, 0); // this
            mv.visitVarInsn(ALOAD, outputStreamVar);
            mv.visitVarInsn(ALOAD, instanceVar);
            mv.visitMethodInsn(INVOKEVIRTUAL, genClassInternalName, "writeStaticGroup_" + refGroup.getName(),
                    "(Lcom/cinnober/msgcodec/io/ByteSink;" + refGroupDescriptor + ")V", false);
            mv.visitLabel(endLabel);
            // PENDING: mv.visitFrame?
        }
    } else {
        throw new IllegalArgumentException("Illegal reference: " + type);
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

protected void generateEncodeSequenceValue(Class<?> javaClass, LocalVariable nextVar, MethodVisitor mv,
        boolean required, int outputStreamVar, Class<?> componentJavaClass, TypeDef type, Schema schema,
        String genClassInternalName, String fieldIdentifier, String debugValueLabel, boolean javaClassCodec)
        throws IllegalArgumentException {

    // PENDING: merge the two if-cases, and reuse common code blocks (see generateDecodeSquenceValue)
    if (javaClass.isArray()) {
        int sequenceVar = nextVar.next();
        mv.visitInsn(DUP);//from   w  ww.j  a va  2s  .c  o m
        mv.visitVarInsn(ASTORE, sequenceVar);
        int lengthVar = nextVar.next();
        Label endLabel = new Label();
        if (required) {
            mv.visitInsn(ARRAYLENGTH);
            mv.visitInsn(DUP);
            mv.visitVarInsn(ISTORE, lengthVar);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeUInt32",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;I)V", false);
        } else {
            Label nonNullLabel = new Label();
            mv.visitInsn(DUP);
            mv.visitJumpInsn(IFNONNULL, nonNullLabel);
            // null
            mv.visitInsn(POP);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeNull",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;)V", false);
            mv.visitJumpInsn(GOTO, endLabel);
            // not null
            mv.visitLabel(nonNullLabel);
            // PENDING: mv.visitFrame?
            mv.visitInsn(ARRAYLENGTH);
            mv.visitInsn(DUP);
            mv.visitVarInsn(ISTORE, lengthVar);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeUInt32",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;I)V", false);
        }
        // for loop
        int loopVar = nextVar.next();
        mv.visitInsn(ICONST_0);
        mv.visitVarInsn(ISTORE, loopVar);
        Label loopLabel = new Label();
        mv.visitLabel(loopLabel);
        // PENDING: mv.visitFrame?
        mv.visitVarInsn(ILOAD, loopVar);
        mv.visitVarInsn(ILOAD, lengthVar);
        mv.visitJumpInsn(IF_ICMPGE, endLabel);
        mv.visitVarInsn(ALOAD, outputStreamVar);
        mv.visitVarInsn(ALOAD, sequenceVar);
        mv.visitVarInsn(ILOAD, loopVar);
        if (componentJavaClass == byte.class || componentJavaClass == boolean.class) {
            mv.visitInsn(BALOAD);
        } else if (componentJavaClass == short.class) {
            mv.visitInsn(SALOAD);
        } else if (componentJavaClass == int.class) {
            mv.visitInsn(IALOAD);
        } else if (componentJavaClass == long.class) {
            mv.visitInsn(LALOAD);
        } else if (componentJavaClass == float.class) {
            mv.visitInsn(FALOAD);
        } else if (componentJavaClass == double.class) {
            mv.visitInsn(DALOAD);
        } else if (componentJavaClass == char.class) {
            mv.visitInsn(CALOAD);
        } else {
            mv.visitInsn(AALOAD);
            mv.visitTypeInsn(CHECKCAST, Type.getInternalName(componentJavaClass));
        }

        // encode the element
        TypeDef.Sequence seqType = (TypeDef.Sequence) type;
        generateEncodeValue(mv, outputStreamVar, nextVar, true, seqType.getComponentType(), componentJavaClass,
                null, schema, genClassInternalName, fieldIdentifier, debugValueLabel + ".component",
                javaClassCodec);

        mv.visitIincInsn(loopVar, 1);
        mv.visitJumpInsn(GOTO, loopLabel);
        mv.visitLabel(endLabel);
        // PENDING: mv.visitFrame?

    } else if (javaClass == List.class) {
        int sequenceVar = nextVar.next();
        mv.visitInsn(DUP);
        mv.visitVarInsn(ASTORE, sequenceVar);
        int lengthVar = nextVar.next();
        Label endLabel = new Label();
        if (required) {
            mv.visitMethodInsn(INVOKEINTERFACE, "java/util/List", "size", "()I", true);
            mv.visitInsn(DUP);
            mv.visitVarInsn(ISTORE, lengthVar);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeUInt32",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;I)V", false);
        } else {
            Label nonNullLabel = new Label();
            mv.visitInsn(DUP);
            mv.visitJumpInsn(IFNONNULL, nonNullLabel);
            // null
            mv.visitInsn(POP);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeNull",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;)V", false);
            mv.visitJumpInsn(GOTO, endLabel);
            // not null
            mv.visitLabel(nonNullLabel);
            // PENDING: mv.visitFrame?
            mv.visitMethodInsn(INVOKEINTERFACE, "java/util/List", "size", "()I", true);
            mv.visitInsn(DUP);
            mv.visitVarInsn(ISTORE, lengthVar);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeUInt32",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;I)V", false);
        }
        // for loop, using iterator
        int iteratorVar = nextVar.next();
        mv.visitVarInsn(ALOAD, sequenceVar);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/util/List", "iterator", "()Ljava/util/Iterator;", true);
        mv.visitVarInsn(ASTORE, iteratorVar);
        Label loopLabel = new Label();
        mv.visitLabel(loopLabel);
        // PENDING: mv.visitFrame?
        mv.visitVarInsn(ALOAD, iteratorVar);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Iterator", "hasNext", "()Z", true);
        mv.visitJumpInsn(IFEQ, endLabel);
        mv.visitVarInsn(ALOAD, outputStreamVar);
        mv.visitVarInsn(ALOAD, iteratorVar);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Iterator", "next", "()Ljava/lang/Object;", true);
        if (componentJavaClass.isPrimitive()) {
            mv.visitTypeInsn(CHECKCAST, Type.getInternalName(box(componentJavaClass)));
            unbox(mv, componentJavaClass);
        } else {
            mv.visitTypeInsn(CHECKCAST, Type.getInternalName(componentJavaClass));
        }

        // encode the element
        TypeDef.Sequence seqType = (TypeDef.Sequence) type;
        generateEncodeValue(mv, outputStreamVar, nextVar, true, seqType.getComponentType(), componentJavaClass,
                null, schema, genClassInternalName, fieldIdentifier, debugValueLabel + ".component",
                javaClassCodec);

        mv.visitJumpInsn(GOTO, loopLabel);
        mv.visitLabel(endLabel);
        // PENDING: mv.visitFrame?
    } else {
        throw new IllegalArgumentException("Illegal sequence javaClass: " + javaClass);
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

protected void generateEncodeTimeValue(TypeDef.Time type, Class<?> javaClass, boolean required,
        MethodVisitor mv) throws RuntimeException {
    if (javaClass == long.class || javaClass == Long.class) {
        generateEncodeInt64Value(required, mv);
    } else if (javaClass == int.class || javaClass == Integer.class) {
        generateEncodeInt32Value(required, mv);
    } else if (javaClass == Date.class) {

        Label nullLabel = new Label();
        Label endLabel = new Label();
        if (!required) {
            mv.visitInsn(DUP);/*from w w  w .  j a  v  a 2  s  .co m*/
            mv.visitJumpInsn(IFNULL, nullLabel);
        }

        // not null
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Date", "getTime", "()J", false);
        // handle differences in UNIT and EPOCH
        long epochOffset = DateUtil.getEpochOffset(type.getEpoch());
        long timeInMillis = DateUtil.getTimeInMillis(type.getUnit());
        // wireTime = (dateTime - epochOffset) / timeUnitInMillis);
        if (epochOffset != 0) {
            mv.visitLdcInsn(epochOffset);
            mv.visitInsn(LSUB);
        }
        if (timeInMillis != 1) {
            mv.visitLdcInsn(timeInMillis);
            mv.visitInsn(LDIV);
        }
        box(mv, long.class);
        mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeInt64Null",
                "(Lcom/cinnober/msgcodec/io/ByteSink;Ljava/lang/Long;)V", false);

        if (!required) {
            mv.visitJumpInsn(GOTO, endLabel);
            mv.visitLabel(nullLabel);
            mv.visitInsn(POP);
            mv.visitInsn(ACONST_NULL);
            mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeInt64Null",
                    "(Lcom/cinnober/msgcodec/io/ByteSink;Ljava/lang/Long;)V", false);
            mv.visitLabel(endLabel);
        }
    } else {
        throw new IllegalArgumentException("Illegal time javaClass: " + javaClass);
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

protected void generateEncodeEnumValue(TypeDef.Enum enumType, String genClassInternalName,
        String fieldIdentifier, LocalVariable nextVar, Class<?> javaClass, boolean required, MethodVisitor mv,
        String debugValueLabel) throws IllegalArgumentException {

    Label writeValueLabel = new Label();

    // Make sure that no unsupported javaClass is used for an enum
    if (javaClass != int.class && javaClass != Integer.class && (javaClass == null || !javaClass.isEnum())) {
        throw new IllegalArgumentException("Illegal enum javaClass: " + javaClass);
    }//from   ww w . jav  a2 s .  com

    // If null do not look it up
    if (!required) {
        Label lookupIdLabel = new Label();
        mv.visitInsn(DUP);
        mv.visitJumpInsn(IFNONNULL, lookupIdLabel);

        // null
        mv.visitInsn(POP);
        mv.visitInsn(ACONST_NULL);
        mv.visitJumpInsn(GOTO, writeValueLabel);

        // not null
        mv.visitLabel(lookupIdLabel);
    }

    // SymbolMapping
    if (required && !javaClass.isEnum()) {
        box(mv, int.class);
    }
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, genClassInternalName, "symbolMapping_" + fieldIdentifier,
            "Lcom/cinnober/msgcodec/SymbolMapping;");
    mv.visitInsn(SWAP);
    mv.visitMethodInsn(INVOKEINTERFACE, "com/cinnober/msgcodec/SymbolMapping", "getId",
            "(Ljava/lang/Object;)Ljava/lang/Integer;", true);

    // Write the value
    mv.visitLabel(writeValueLabel);
    if (required) {
        unbox(mv, Integer.class); // TODO: Should null check before this and throw exception since there was no mapping
    }
    generateEncodeInt32Value(required, mv);

    //        if (javaClass.isEnum()) {
    //            Label endLabel = new Label();
    //            if (!required) {
    //                Label nonNullLabel = new Label();
    //                mv.visitInsn(DUP);
    //                mv.visitJumpInsn(IFNONNULL, nonNullLabel);
    //                // null
    //                mv.visitInsn(POP);
    //                mv.visitInsn(ACONST_NULL);
    //                mv.visitMethodInsn(INVOKESTATIC, blinkOutputIName, "writeInt32Null",
    //                        "(Lcom/cinnober/msgcodec/io/ByteSink;Ljava/lang/Integer;)V", false);
    //                mv.visitJumpInsn(GOTO, endLabel);
    //                // not null
    //                mv.visitLabel(nonNullLabel);
    //            }
    //            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Enum", "ordinal", "()I", false);
    //            //switch
    //            EnumSymbols enumSymbols = new EnumSymbols(enumType, javaClass);
    //            Enum[] enumValues = ((Class<Enum>)javaClass).getEnumConstants();
    //            int[] ordinals = new int[enumValues.length];
    //            Label[] labels = new Label[enumValues.length];
    //            for (int i=0; i<enumValues.length; i++) {
    //                ordinals[i] = i;
    //                labels[i] = new Label();
    //            }
    //            Label defaultLabel = new Label();
    //            Label writeLabel = new Label();
    //            int symbolIdVar = nextVar.next();
    //            mv.visitLookupSwitchInsn(defaultLabel, ordinals, labels);
    //            for (int i=0; i<enumValues.length; i++) {
    //                mv.visitLabel(labels[i]);
    //                Symbol symbol = enumSymbols.getSymbol(enumValues[i]);
    //                if (symbol != null) {
    //                    mv.visitLdcInsn(symbol.getId());
    //                    mv.visitJumpInsn(GOTO, writeLabel);
    //                } else {
    //                    mv.visitLdcInsn(debugValueLabel);
    //                    mv.visitVarInsn(ALOAD, symbolIdVar);
    //                    mv.visitMethodInsn(INVOKESTATIC, baseclassIName, "unmappableEnumSymbolValue",
    //                            "(Ljava/lang/String;Ljava/lang/Enum;)Ljava/lang/IllegalArgumentException;", false);
    //                    mv.visitInsn(ATHROW);
    //                }
    //            }
    //            mv.visitLabel(defaultLabel);
    //            mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    //            mv.visitInsn(DUP);
    //            mv.visitLdcInsn("Should not happen: reached generated switch default case for value " + debugValueLabel);
    //            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V", false);
    //            mv.visitInsn(ATHROW);
    //
    //            // write
    //            mv.visitLabel(writeLabel);
    //            if (!required) {
    //                box(mv, int.class);
    //            }
    //            generateEncodeInt32Value(required, mv);
    //            // end
    //            mv.visitLabel(endLabel);
    //        } else if (javaClass == int.class || javaClass == Integer.class) {
    //            generateEncodeInt32Value(required, mv);
    //        } else {
    //            throw new IllegalArgumentException("Illegal enum javaClass: " + javaClass);
    //        }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

/**
 * Generate value decoding using the blink input.
 *
 * <p>Defaults to <code>readUInt16[Null].</code>
 *
 * @param required true if the field is required, otherwise false.
 * @param mv the method visitor, not null.
 * @see #generateDecodeValue/*from www  .  j a  va  2 s.c om*/
 */
protected void generateDecodeCharacterValue(boolean required, MethodVisitor mv) {
    if (required) {
        mv.visitMethodInsn(INVOKESTATIC, blinkInputIName, "readUInt16",
                "(Lcom/cinnober/msgcodec/io/ByteSource;)S", false);
        mv.visitInsn(I2C);
    } else {
        mv.visitMethodInsn(INVOKESTATIC, blinkInputIName, "readUInt16Null",
                "(Lcom/cinnober/msgcodec/io/ByteSource;)Ljava/lang/Short;", false);
        Label nullLabel = new Label();
        mv.visitInsn(DUP);
        mv.visitJumpInsn(IFNULL, nullLabel);
        unbox(mv, Short.class);
        mv.visitInsn(I2C);
        box(mv, Character.class);
        mv.visitLabel(nullLabel);
        mv.visitTypeInsn(CHECKCAST, Type.getInternalName(Character.class));
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

protected void generateDecodeTimeValue(TypeDef.Time type, Class<?> javaClass, boolean required,
        MethodVisitor mv, LocalVariable nextVar) throws IllegalArgumentException {
    if (javaClass == long.class || javaClass == Long.class) {
        generateDecodeInt64Value(required, mv);
    } else if (javaClass == int.class || javaClass == Integer.class) {
        generateDecodeInt32Value(required, mv);
    } else if (javaClass == Date.class) {

        int timeVar = nextVar.next();
        nextVar.next(); // note: 2 variable slots
        Label endLabel = new Label();
        if (required) {
            generateDecodeInt64Value(true, mv);
        } else {//from  w  w  w  .j  a v  a  2 s . c om
            generateDecodeInt64Value(false, mv);
            mv.visitInsn(DUP);
            Label nonNullLabel = new Label();
            mv.visitJumpInsn(IFNONNULL, nonNullLabel);
            // null
            mv.visitTypeInsn(CHECKCAST, "java/util/Date");
            mv.visitJumpInsn(GOTO, endLabel);
            // not null
            mv.visitLabel(nonNullLabel);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J", false);
        }

        mv.visitVarInsn(LSTORE, timeVar);
        mv.visitTypeInsn(NEW, "java/util/Date");
        mv.visitInsn(DUP);
        mv.visitVarInsn(LLOAD, timeVar);
        // handle differences in UNIT and EPOCH
        long epochOffset = DateUtil.getEpochOffset(type.getEpoch());
        long timeInMillis = DateUtil.getTimeInMillis(type.getUnit());
        // dateTime = wireTime * timeUnitInMillis + epochOffset;
        if (timeInMillis != 1) {
            mv.visitLdcInsn(timeInMillis);
            mv.visitInsn(LMUL);
        }
        if (epochOffset != 0) {
            mv.visitLdcInsn(epochOffset);
            mv.visitInsn(LADD);
        }

        mv.visitMethodInsn(INVOKESPECIAL, "java/util/Date", "<init>", "(J)V", false);

        if (!required) {
            // end
            mv.visitLabel(endLabel);
        }
    } else {
        throw new IllegalArgumentException("Illegal time javaClass: " + javaClass);
    }
}

From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

/**
 * @see #generateDecodeInt32Value(boolean, org.objectweb.asm.MethodVisitor) 
 *//* w  w  w .ja  v  a2s . c o m*/
protected void generateDecodeEnumValue(boolean required, MethodVisitor mv, TypeDef type,
        String genClassInternalName, String fieldIdentifier, LocalVariable nextVar, Class<?> javaClass,
        String debugValueLabel) throws IllegalArgumentException {

    Label endLabel = new Label();
    if (required) {
        generateDecodeInt32Value(true, mv);
        box(mv, Integer.class);
    } else {
        generateDecodeInt32Value(false, mv);
        mv.visitInsn(DUP);
        mv.visitJumpInsn(IFNULL, endLabel);

        //            Label nonNullLabel = new Label();
        //            mv.visitJumpInsn(IFNONNULL, nonNullLabel);
        //            mv.visitTypeInsn(CHECKCAST, Type.getInternalName(javaClass));
        //            mv.visitJumpInsn(GOTO, endLabel);

        // not null
        //            mv.visitLabel(nonNullLabel);
        //            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Integer", "intValue", "()I", false); // unbox(mv, Integer.class);
    }

    // SymbolMapping
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, genClassInternalName, "symbolMapping_" + fieldIdentifier,
            "Lcom/cinnober/msgcodec/SymbolMapping;");
    mv.visitInsn(SWAP);
    mv.visitMethodInsn(INVOKEINTERFACE, "com/cinnober/msgcodec/SymbolMapping", "lookup",
            "(Ljava/lang/Integer;)Ljava/lang/Object;", true);

    //        // switch
    //        TypeDef.Enum enumType = (TypeDef.Enum) type;
    //        List<Symbol> symbols = enumType.getSymbols();
    //        int numSymbols = symbols.size();
    //        int[] ids = new int[numSymbols];
    //        Label[] labels = new Label[numSymbols];
    //        for (int i=0; i<numSymbols; i++) {
    //            ids[i] = symbols.get(i).getId();
    //            labels[i] = new Label();
    //        }
    //        Label defaultLabel = new Label();
    //        int symbolIdVar = nextVar.next();
    //        mv.visitInsn(DUP);
    //        mv.visitVarInsn(ISTORE, symbolIdVar);
    //        EnumSymbols enumSymbols = null;
    //        if (javaClass.isEnum()) {
    //            enumSymbols = new EnumSymbols(enumType, javaClass);
    //        }
    //        mv.visitLookupSwitchInsn(defaultLabel, ids, labels);
    //        for (int i=0; i<numSymbols; i++) {
    //            boolean addGotoEnd = true;
    //            mv.visitLabel(labels[i]);
    //            if (javaClass.isEnum()) {
    //                Enum enumValue = enumSymbols.getEnum(ids[i]);
    //                if (enumValue != null) {
    //                    //mv.visitLdcInsn(Type.getType(javaClass));
    //                    mv.visitFieldInsn(GETSTATIC, Type.getInternalName(javaClass),
    //                            enumValue.name(),
    //                            Type.getDescriptor(javaClass));
    //                } else {
    //                    mv.visitLdcInsn(debugValueLabel);
    //                    mv.visitLdcInsn(ids[i]);
    //                    mv.visitLdcInsn(Type.getType(javaClass));
    //                    mv.visitMethodInsn(INVOKESTATIC, baseclassIName, "unmappableEnumSymbolId",
    //                            "(Ljava/lang/String;ILjava/lang/Class;)Lcom/cinnober/msgcodec/DecodeException;", false);
    //                    mv.visitInsn(ATHROW);
    //                    addGotoEnd = false;
    //                }
    //            } else if (javaClass == int.class || javaClass == Integer.class) {
    //                mv.visitLdcInsn(ids[i]);
    //                if (!required) {
    //                    box(mv, Integer.class);
    //                }
    //            } else {
    //                throw new IllegalArgumentException("Illegal enum javaClass: " + javaClass);
    //            }
    //            if (addGotoEnd) {
    //                mv.visitJumpInsn(GOTO, endLabel);
    //            }
    //        }
    //        mv.visitLabel(defaultLabel);
    //        mv.visitLdcInsn(debugValueLabel);
    //        mv.visitVarInsn(ILOAD, symbolIdVar);
    //        mv.visitMethodInsn(INVOKESTATIC, baseclassIName, "unknownEnumSymbol",
    //                "(Ljava/lang/String;I)Lcom/cinnober/msgcodec/DecodeException;", false);
    //        mv.visitInsn(ATHROW);

    // end
    mv.visitLabel(endLabel);

    if (!javaClass.isEnum()) {
        mv.visitTypeInsn(CHECKCAST, Type.getInternalName(Integer.class));
        if (required) {
            unbox(mv, Integer.class);
        }
    } else {
        mv.visitTypeInsn(CHECKCAST, Type.getInternalName(javaClass));
    }
}