Examples with XExecutable org.infinispan.protostream.annotations.impl.types.XExecutable used on opensource projects

Example 1 with XExecutable

use of org.infinispan.protostream.annotations.impl.types.XExecutable in project protostream by infinispan.

the class AbstractMarshallerCodeGenerator method generateReadMethodBody.

/**
 * Signature of generated method is:
 * <code>
 * public java.lang.Object read(org.infinispan.protostream.ProtoStreamMarshaller.ReadContext $1,
 * java.lang.Object $2) throws java.io.IOException
 * </code>
 */
protected String generateReadMethodBody(ProtoMessageTypeMetadata messageTypeMetadata) {
    // todo [anistor] handle unknown fields for adapters also
    String getUnknownFieldSetFieldStatement = null;
    String setUnknownFieldSetFieldStatement = null;
    if (messageTypeMetadata.getUnknownFieldSetField() != null) {
        getUnknownFieldSetFieldStatement = "o." + messageTypeMetadata.getUnknownFieldSetField().getName();
        setUnknownFieldSetFieldStatement = "o." + messageTypeMetadata.getUnknownFieldSetField().getName() + " = u";
    } else if (messageTypeMetadata.getUnknownFieldSetGetter() != null) {
        getUnknownFieldSetFieldStatement = "o." + messageTypeMetadata.getUnknownFieldSetGetter().getName() + "()";
        setUnknownFieldSetFieldStatement = "o." + messageTypeMetadata.getUnknownFieldSetSetter().getName() + "(u)";
    } else if (messageTypeMetadata.getJavaClass().isAssignableTo(Message.class)) {
        getUnknownFieldSetFieldStatement = "o.getUnknownFieldSet()";
        setUnknownFieldSetFieldStatement = "o.setUnknownFieldSet(u)";
    }
    IndentWriter iw = new IndentWriter();
    iw.append("{\n");
    iw.inc();
    iw.append("final ").append(TagReader.class.getName()).append(" $in = $1.getReader();\n");
    if (messageTypeMetadata.isContainer()) {
        iw.append("Object __v$sizeParam = $1.getParam(\"" + WrappedMessage.CONTAINER_SIZE_CONTEXT_PARAM + "\");\n");
        iw.append("int __v$size = ((java.lang.Integer) __v$sizeParam).intValue();\n");
    }
    // if there is no factory then the class must have setters or the fields should be directly accessible and not be final
    final boolean noFactory = messageTypeMetadata.getFactory() == null;
    if (noFactory) {
        iw.append("final ").append(messageTypeMetadata.getJavaClassName()).append(" o = new ").append(messageTypeMetadata.getJavaClassName()).append("();\n");
    }
    // number of fields that are required and do not have a default value
    int mandatoryFields = 0;
    // fields that should be tracked for presence and be either initialized with defaults if missing at the end
    // or an exception thrown if no default exists
    Map<String, Integer> trackedFields = new LinkedHashMap<>();
    // First pass over fields. Count how many are mandatory and how many need to be tracked for presence.
    for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
        if (fieldMetadata.isRequired() && fieldMetadata.getDefaultValue() == null) {
            mandatoryFields++;
        }
        if (fieldMetadata.isRequired() || fieldMetadata.getDefaultValue() != null && (noFactory || fieldMetadata.isRepeated() || fieldMetadata.getProtobufType() == Type.BYTES)) {
            int trackedFieldsSize = trackedFields.size();
            if (trackedFieldsSize % 64 == 0) {
                // declare a long variable to emulate a bitset in multiple long variables
                iw.append("long __bits$").append(String.valueOf(trackedFieldsSize >> 6)).append(" = 0;\n");
            }
            trackedFields.put(fieldMetadata.getName(), trackedFieldsSize);
        }
    }
    for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
        if (fieldMetadata.isRepeated()) {
            // a collection local variable
            iw.append(fieldMetadata.getCollectionImplementation().getCanonicalName()).append(' ').append(makeCollectionLocalVar(fieldMetadata)).append(" = ");
            if (noDefaults || fieldMetadata.isArray()) {
                iw.append("null");
            } else {
                iw.append("new ").append(fieldMetadata.getCollectionImplementation().getCanonicalName()).append("()");
            }
            iw.append(";\n");
            if (!noFactory && fieldMetadata.isArray()) {
                // an array local variable
                iw.append(fieldMetadata.getJavaTypeName()).append("[] ").append(makeArrayLocalVar(fieldMetadata)).append(" = ");
                if (noDefaults) {
                    iw.append("null");
                } else {
                    iw.append("new ").append(fieldMetadata.getJavaTypeName()).append("[0]");
                }
                iw.append(";\n");
            }
        } else if (!noFactory) {
            // immutable messages need a per-field local variable initialized to default value if any
            iw.append(fieldMetadata.getJavaTypeName()).append(' ').append(makeFieldLocalVar(fieldMetadata));
            Object defaultValue = fieldMetadata.getDefaultValue();
            if (defaultValue != null && fieldMetadata.getProtobufType() != Type.BYTES) {
                // fields of type bytes get assigned default values only at the end to avoid a possibly useless byte[] allocation
                String val = toJavaLiteral(defaultValue, fieldMetadata.getJavaType());
                iw.append(" = ").append(box(val, fieldMetadata.getJavaType()));
            } else {
                if (fieldMetadata.isBoxedPrimitive() || fieldMetadata.getProtobufType() == Type.BYTES || fieldMetadata.getProtobufType().getJavaType() == JavaType.STRING || fieldMetadata.getProtobufType().getJavaType() == JavaType.BYTE_STRING || fieldMetadata.getProtobufType().getJavaType() == JavaType.ENUM || fieldMetadata.getProtobufType().getJavaType() == JavaType.MESSAGE || fieldMetadata.getJavaType().getCanonicalName().equals(Date.class.getCanonicalName()) || fieldMetadata.getJavaType().getCanonicalName().equals(Instant.class.getCanonicalName())) {
                    iw.append(" = null");
                } else if (fieldMetadata.isPrimitive()) {
                    if (fieldMetadata.getProtobufType() == Type.BOOL) {
                        iw.append(" = false");
                    } else {
                        iw.append(" = 0");
                    }
                }
            }
            iw.append(";\n");
        }
    }
    iw.append("boolean done = false;\n");
    iw.append("while (!done) {\n");
    iw.inc();
    iw.append("final int tag = $in.readTag();\n");
    iw.append("switch (tag) {\n");
    iw.inc();
    iw.append("case 0: {\n");
    iw.inc();
    iw.append("done = true;\nbreak;\n");
    iw.dec();
    iw.append("}\n");
    for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
        final String v = makeFieldLocalVar(fieldMetadata);
        iw.append("case ").append(makeFieldTag(fieldMetadata.getNumber(), fieldMetadata.getProtobufType().getWireType())).append(": {\n");
        iw.inc();
        if (BaseProtoSchemaGenerator.generateMarshallerDebugComments) {
            iw.append("// type = ").append(fieldMetadata.getProtobufType().toString()).append(", name = ").append(fieldMetadata.getName()).append('\n');
        }
        switch(fieldMetadata.getProtobufType()) {
            case DOUBLE:
            case FLOAT:
            case INT64:
            case UINT64:
            case INT32:
            case FIXED64:
            case FIXED32:
            case BOOL:
            case STRING:
            case BYTES:
            case UINT32:
            case SFIXED32:
            case SFIXED64:
            case SINT32:
            case SINT64:
                {
                    if (noFactory || fieldMetadata.isRepeated()) {
                        iw.append(fieldMetadata.getJavaTypeName()).append(' ');
                    }
                    iw.append(v).append(" = ").append(box(convert("$in." + makeStreamIOMethodName(fieldMetadata, false) + "()", fieldMetadata), fieldMetadata.getJavaType())).append(";\n");
                    genSetField(iw, fieldMetadata, trackedFields, messageTypeMetadata);
                    break;
                }
            case GROUP:
                {
                    String mdField = initMarshallerDelegateField(iw, fieldMetadata);
                    if (noFactory || fieldMetadata.isRepeated()) {
                        iw.append(fieldMetadata.getJavaTypeName()).append(' ');
                    }
                    iw.append(v).append(" = (").append(fieldMetadata.getJavaTypeName()).append(") readMessage(").append(mdField).append(", $1);\n");
                    iw.append("$in.checkLastTagWas(").append(makeFieldTag(fieldMetadata.getNumber(), WireType.END_GROUP)).append(");\n");
                    genSetField(iw, fieldMetadata, trackedFields, messageTypeMetadata);
                    break;
                }
            case MESSAGE:
                {
                    String mdField = initMarshallerDelegateField(iw, fieldMetadata);
                    iw.append("int length = $in.readUInt32();\n");
                    iw.append("int oldLimit = $in.pushLimit(length);\n");
                    if (noFactory || fieldMetadata.isRepeated()) {
                        iw.append(fieldMetadata.getJavaTypeName()).append(' ');
                    }
                    iw.append(v).append(" = (").append(fieldMetadata.getJavaTypeName()).append(") readMessage(").append(mdField).append(", $1);\n");
                    iw.append("$in.checkLastTagWas(0);\n");
                    iw.append("$in.popLimit(oldLimit);\n");
                    genSetField(iw, fieldMetadata, trackedFields, messageTypeMetadata);
                    break;
                }
            case ENUM:
                {
                    String mdField = initMarshallerDelegateField(iw, fieldMetadata);
                    iw.append("int enumVal = $in.readEnum();\n");
                    if (noFactory || fieldMetadata.isRepeated()) {
                        iw.append(fieldMetadata.getJavaTypeName()).append(' ');
                    }
                    iw.append(v).append(" = (").append(fieldMetadata.getJavaTypeName()).append(") ").append(mdField).append(".getMarshaller().decode(enumVal);\n");
                    iw.append("if (").append(v).append(" == null) {\n");
                    if (getUnknownFieldSetFieldStatement != null) {
                        iw.inc();
                        iw.append(PROTOSTREAM_PACKAGE).append(".UnknownFieldSet u = ").append(getUnknownFieldSetFieldStatement).append(";\n");
                        iw.append("if (u == null) { u = new ").append(PROTOSTREAM_PACKAGE).append(".impl.UnknownFieldSetImpl(); ").append(setUnknownFieldSetFieldStatement).append("; }\n");
                        iw.append("u.putVarintField(").append(String.valueOf(fieldMetadata.getNumber())).append(", enumVal);\n");
                        iw.dec();
                    }
                    iw.append("} else {\n").inc();
                    genSetField(iw, fieldMetadata, trackedFields, messageTypeMetadata);
                    iw.dec().append("}\n");
                    break;
                }
            default:
                throw new IllegalStateException("Unknown field type : " + fieldMetadata.getProtobufType());
        }
        iw.append("break;\n");
        iw.dec();
        iw.append("}\n");
    }
    iw.append("default: {\n");
    iw.inc();
    if (getUnknownFieldSetFieldStatement != null) {
        iw.append(PROTOSTREAM_PACKAGE).append(".UnknownFieldSet u = ").append(getUnknownFieldSetFieldStatement).append(";\n");
        iw.append("if (u == null) u = new ").append(PROTOSTREAM_PACKAGE).append(".impl.UnknownFieldSetImpl();\n");
        iw.append("if (!u.readSingleField(tag, $in)) done = true;\n");
        iw.append("if (!u.isEmpty()) ").append(setUnknownFieldSetFieldStatement).append(";\n");
    } else {
        iw.append("if (!$in.skipField(tag)) done = true;\n");
    }
    iw.dec().append("}\n");
    iw.dec().append("}\n");
    iw.dec().append("}\n");
    // assign defaults to missing fields
    if (BaseProtoSchemaGenerator.generateMarshallerDebugComments) {
        iw.append("\n// default values\n\n");
    }
    for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
        Object defaultValue = fieldMetadata.getDefaultValue();
        if (defaultValue != null && (noFactory || fieldMetadata.isRepeated() || fieldMetadata.getProtobufType() == Type.BYTES)) {
            iw.append("if ").append(makeTestFieldWasNotSet(fieldMetadata, trackedFields)).append(" {\n");
            iw.inc();
            String val = toJavaLiteral(defaultValue, fieldMetadata.getJavaType());
            if (fieldMetadata.isRepeated()) {
                String c = makeCollectionLocalVar(fieldMetadata);
                if (noDefaults || fieldMetadata.isArray()) {
                    iw.append("if (").append(c).append(" == null) ").append(c).append(" = new ").append(fieldMetadata.getCollectionImplementation().getCanonicalName()).append("();\n");
                }
                iw.append(c).append(".add(").append(box(val, typeFactory.fromClass(defaultValue.getClass()))).append(");\n");
            } else {
                if (noFactory) {
                    iw.append(createSetPropExpr(messageTypeMetadata, fieldMetadata, "o", box(val, fieldMetadata.getJavaType()))).append(";\n");
                } else {
                    iw.append(makeFieldLocalVar(fieldMetadata)).append(" = ").append(box(val, fieldMetadata.getJavaType())).append(";\n");
                }
            }
            iw.dec();
            iw.append("}\n");
        }
    }
    for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
        if (fieldMetadata.isRepeated()) {
            String c = makeCollectionLocalVar(fieldMetadata);
            if (fieldMetadata.isArray()) {
                if (fieldMetadata.getDefaultValue() == null) {
                    iw.append("if (").append(c).append(" != null) ");
                }
                iw.append("{\n").inc();
                String a = makeArrayLocalVar(fieldMetadata);
                if (fieldMetadata.getJavaType().isPrimitive()) {
                    if (noFactory) {
                        iw.append(fieldMetadata.getJavaTypeName()).append("[] ");
                    }
                    iw.append(a).append(" = new ").append(fieldMetadata.getJavaTypeName()).append("[").append(c).append(".size()];\n");
                    XClass boxedType = box(fieldMetadata.getJavaType());
                    iw.append("int _j = 0;\nfor (java.util.Iterator _it = ").append(c).append(".iterator(); _it.hasNext();) ").append(a).append("[_j++] = ").append(unbox("((" + boxedType.getName() + ") _it.next())", boxedType)).append(";\n");
                    c = a;
                } else {
                    c = "(" + fieldMetadata.getJavaTypeName() + "[])" + c + ".toArray(new " + fieldMetadata.getJavaTypeName() + "[0])";
                }
            }
            if (noFactory) {
                iw.append(createSetPropExpr(messageTypeMetadata, fieldMetadata, "o", c)).append(";\n");
            } else if (fieldMetadata.isArray() && !fieldMetadata.getJavaType().isPrimitive()) {
                iw.append(makeArrayLocalVar(fieldMetadata)).append(" = ").append(c).append(";\n");
            }
            if (fieldMetadata.isArray()) {
                iw.dec().append('}');
                if (!noDefaults && fieldMetadata.getDefaultValue() == null) {
                    c = "new " + fieldMetadata.getJavaTypeName() + "[0]";
                    iw.append(" else {\n").inc();
                    if (noFactory) {
                        iw.append(createSetPropExpr(messageTypeMetadata, fieldMetadata, "o", c)).append(";\n");
                    } else {
                        iw.append(makeArrayLocalVar(fieldMetadata)).append(" = ").append(c).append(";\n");
                    }
                    iw.dec().append("}\n");
                }
            }
            iw.append('\n');
        }
    }
    // complain about missing required fields
    if (mandatoryFields > 0) {
        List<ProtoFieldMetadata> mandatory = messageTypeMetadata.getFields().values().stream().filter(f -> f.isRequired() && f.getDefaultValue() == null).collect(Collectors.toList());
        iw.append("if (").append(makeTestFieldWasNotSet(mandatory, trackedFields)).append(") {\n");
        iw.inc();
        iw.append("final StringBuilder missing = new StringBuilder();\n");
        boolean first = true;
        for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
            if (fieldMetadata.isRequired()) {
                iw.append("if ").append(makeTestFieldWasNotSet(fieldMetadata, trackedFields)).append(" {\n");
                iw.inc();
                if (first) {
                    first = false;
                } else {
                    iw.append("if (missing.length() > 0) missing.append(\", \");\n");
                }
                iw.append("missing.append(\"").append(fieldMetadata.getName()).append("\");\n");
                iw.dec();
                iw.append("}\n");
            }
        }
        iw.append("throw new java.io.IOException(\"Required field(s) missing from input stream : \" + missing);\n");
        iw.dec();
        iw.append("}\n");
    }
    if (noFactory) {
        // return the instance
        iw.append("return o;\n");
    } else {
        // create and return the instance
        iw.append("return ");
        XExecutable factory = messageTypeMetadata.getFactory();
        if (factory instanceof XConstructor) {
            iw.append("new ").append(messageTypeMetadata.getJavaClassName());
        } else {
            if (factory.isStatic()) {
                iw.append(messageTypeMetadata.getAnnotatedClassName()).append('.').append(factory.getName());
            } else {
                iw.append(ADAPTER_FIELD_NAME).append('.').append(factory.getName());
            }
        }
        iw.append('(');
        boolean first = true;
        for (String paramName : factory.getParameterNames()) {
            if (first) {
                first = false;
                if (messageTypeMetadata.isContainer()) {
                    iw.append("__v$size");
                    continue;
                }
            } else {
                iw.append(", ");
            }
            boolean found = false;
            for (ProtoFieldMetadata fieldMetadata : messageTypeMetadata.getFields().values()) {
                if (fieldMetadata.getPropertyName().equals(paramName)) {
                    String var = fieldMetadata.isRepeated() ? (fieldMetadata.isArray() ? makeArrayLocalVar(fieldMetadata) : makeCollectionLocalVar(fieldMetadata)) : makeFieldLocalVar(fieldMetadata);
                    iw.append(var);
                    found = true;
                    break;
                }
            }
            if (!found) {
                throw new ProtoSchemaBuilderException("Parameter '" + paramName + "' of factory " + factory + " does not map to any Protobuf field");
            }
        }
        iw.append(");\n");
    }
    iw.dec().append("}\n");
    return iw.toString();
}