Examples with StringCPEntry org.wso2.ballerinalang.programfile.cpentries.StringCPEntry used on opensource projects

Example 1 with StringCPEntry

use of org.wso2.ballerinalang.programfile.cpentries.StringCPEntry in project ballerina by ballerina-lang.

the class PackageInfoWriter method writeCP.

public static void writeCP(DataOutputStream dataOutStream, ConstantPoolEntry[] constPool) throws IOException {
    dataOutStream.writeInt(constPool.length);
    for (ConstantPoolEntry cpEntry : constPool) {
        // Emitting the kind of the constant pool entry.
        dataOutStream.writeByte(cpEntry.getEntryType().getValue());
        int nameCPIndex;
        switch(cpEntry.getEntryType()) {
            case CP_ENTRY_UTF8:
                String stringVal = ((UTF8CPEntry) cpEntry).getValue();
                if (stringVal != null) {
                    byte[] bytes = toUTF(stringVal);
                    dataOutStream.writeShort(bytes.length);
                    dataOutStream.write(bytes);
                } else {
                    // If the string value is null, we write the size as -1.
                    // This marks that the value followed by -1 size is a null value.
                    dataOutStream.writeShort(NULL_VALUE_FIELD_SIZE_TAG);
                }
                break;
            case CP_ENTRY_INTEGER:
                long longVal = ((IntegerCPEntry) cpEntry).getValue();
                dataOutStream.writeLong(longVal);
                break;
            case CP_ENTRY_FLOAT:
                double doubleVal = ((FloatCPEntry) cpEntry).getValue();
                dataOutStream.writeDouble(doubleVal);
                break;
            case CP_ENTRY_STRING:
                nameCPIndex = ((StringCPEntry) cpEntry).getStringCPIndex();
                dataOutStream.writeInt(nameCPIndex);
                break;
            case CP_ENTRY_PACKAGE:
                nameCPIndex = ((PackageRefCPEntry) cpEntry).nameCPIndex;
                dataOutStream.writeInt(nameCPIndex);
                break;
            case CP_ENTRY_FUNCTION_REF:
                FunctionRefCPEntry funcRefEntry = (FunctionRefCPEntry) cpEntry;
                dataOutStream.writeInt(funcRefEntry.packageCPIndex);
                dataOutStream.writeInt(funcRefEntry.nameCPIndex);
                break;
            case CP_ENTRY_ACTION_REF:
                ActionRefCPEntry actionRefEntry = (ActionRefCPEntry) cpEntry;
                dataOutStream.writeInt(actionRefEntry.getPackageCPIndex());
                dataOutStream.writeInt(actionRefEntry.getNameCPIndex());
                break;
            case CP_ENTRY_STRUCTURE_REF:
                StructureRefCPEntry structureRefCPEntry = (StructureRefCPEntry) cpEntry;
                dataOutStream.writeInt(structureRefCPEntry.packageCPIndex);
                dataOutStream.writeInt(structureRefCPEntry.nameCPIndex);
                break;
            case CP_ENTRY_TYPE_REF:
                TypeRefCPEntry typeRefCPEntry = (TypeRefCPEntry) cpEntry;
                dataOutStream.writeInt(typeRefCPEntry.typeSigCPIndex);
                break;
            case CP_ENTRY_FORK_JOIN:
                ForkJoinCPEntry forkJoinCPEntry = (ForkJoinCPEntry) cpEntry;
                dataOutStream.writeInt(forkJoinCPEntry.forkJoinInfoIndex);
                break;
            case CP_ENTRY_WRKR_DATA_CHNL_REF:
                WorkerDataChannelRefCPEntry workerDataChannelCPEntry = (WorkerDataChannelRefCPEntry) cpEntry;
                dataOutStream.writeInt(workerDataChannelCPEntry.getUniqueNameCPIndex());
                break;
            case CP_ENTRY_TRANSFORMER_REF:
                TransformerRefCPEntry transformerRefEntry = (TransformerRefCPEntry) cpEntry;
                dataOutStream.writeInt(transformerRefEntry.packageCPIndex);
                dataOutStream.writeInt(transformerRefEntry.nameCPIndex);
                break;
        }
    }
}

Example 2 with StringCPEntry

use of org.wso2.ballerinalang.programfile.cpentries.StringCPEntry in project ballerina by ballerina-lang.

the class CodeGenerator method visit.

// Expressions
@Override
public void visit(BLangLiteral literalExpr) {
    int opcode;
    Operand regIndex = calcAndGetExprRegIndex(literalExpr);
    int typeTag = literalExpr.type.tag;
    switch(typeTag) {
        case TypeTags.INT:
            long longVal = (Long) literalExpr.value;
            if (longVal >= 0 && longVal <= 5) {
                opcode = InstructionCodes.ICONST_0 + (int) longVal;
                emit(opcode, regIndex);
            } else {
                int intCPEntryIndex = currentPkgInfo.addCPEntry(new IntegerCPEntry(longVal));
                emit(InstructionCodes.ICONST, getOperand(intCPEntryIndex), regIndex);
            }
            break;
        case TypeTags.FLOAT:
            double doubleVal = (Double) literalExpr.value;
            if (doubleVal == 0 || doubleVal == 1 || doubleVal == 2 || doubleVal == 3 || doubleVal == 4 || doubleVal == 5) {
                opcode = InstructionCodes.FCONST_0 + (int) doubleVal;
                emit(opcode, regIndex);
            } else {
                int floatCPEntryIndex = currentPkgInfo.addCPEntry(new FloatCPEntry(doubleVal));
                emit(InstructionCodes.FCONST, getOperand(floatCPEntryIndex), regIndex);
            }
            break;
        case TypeTags.STRING:
            String strValue = (String) literalExpr.value;
            StringCPEntry stringCPEntry = new StringCPEntry(addUTF8CPEntry(currentPkgInfo, strValue), strValue);
            int strCPIndex = currentPkgInfo.addCPEntry(stringCPEntry);
            emit(InstructionCodes.SCONST, getOperand(strCPIndex), regIndex);
            break;
        case TypeTags.BOOLEAN:
            boolean booleanVal = (Boolean) literalExpr.value;
            if (!booleanVal) {
                opcode = InstructionCodes.BCONST_0;
            } else {
                opcode = InstructionCodes.BCONST_1;
            }
            emit(opcode, regIndex);
            break;
        case TypeTags.NULL:
            emit(InstructionCodes.RCONST_NULL, regIndex);
    }
}

Example 3 with StringCPEntry

use of org.wso2.ballerinalang.programfile.cpentries.StringCPEntry in project ballerina by ballerina-lang.

the class CodeGenerator method visit.

@Override
public void visit(BLangStreamLiteral streamLiteral) {
    streamLiteral.regIndex = calcAndGetExprRegIndex(streamLiteral);
    Operand typeCPIndex = getTypeCPIndex(streamLiteral.type);
    StringCPEntry nameCPEntry = new StringCPEntry(addUTF8CPEntry(currentPkgInfo, streamLiteral.name.value), streamLiteral.name.value);
    Operand nameCPIndex = getOperand(currentPkgInfo.addCPEntry(nameCPEntry));
    emit(InstructionCodes.NEWSTREAM, streamLiteral.regIndex, typeCPIndex, nameCPIndex);
}