Examples with Operand org.wso2.ballerinalang.programfile.Instruction.Operand used on opensource projects

Example 1 with Operand

use of org.wso2.ballerinalang.programfile.Instruction.Operand in project ballerina by ballerina-lang.

the class PackageInfoWriter method writeInstructions.

private static byte[] writeInstructions(Instruction[] instructions) throws IOException {
    ByteArrayOutputStream byteAOS = new ByteArrayOutputStream();
    DataOutputStream dataOutStream = new DataOutputStream(byteAOS);
    for (Instruction instruction : instructions) {
        dataOutStream.write(instruction.opcode);
        for (Operand operand : instruction.ops) {
            dataOutStream.writeInt(operand.value);
        }
    }
    return byteAOS.toByteArray();
}

Example 2 with Operand

use of org.wso2.ballerinalang.programfile.Instruction.Operand in project ballerina by ballerina-lang.

the class CodeGenerator method visit.

@Override
public void visit(BLangArrayAccessExpr arrayIndexAccessExpr) {
    boolean variableStore = this.varAssignment;
    this.varAssignment = false;
    genNode(arrayIndexAccessExpr.expr, this.env);
    Operand varRefRegIndex = arrayIndexAccessExpr.expr.regIndex;
    genNode(arrayIndexAccessExpr.indexExpr, this.env);
    Operand indexRegIndex = arrayIndexAccessExpr.indexExpr.regIndex;
    BArrayType arrayType = (BArrayType) arrayIndexAccessExpr.expr.type;
    if (variableStore) {
        int opcode = getOpcode(arrayType.eType.tag, InstructionCodes.IASTORE);
        emit(opcode, varRefRegIndex, indexRegIndex, arrayIndexAccessExpr.regIndex);
    } else {
        int opcode = getOpcode(arrayType.eType.tag, InstructionCodes.IALOAD);
        emit(opcode, varRefRegIndex, indexRegIndex, calcAndGetExprRegIndex(arrayIndexAccessExpr));
    }
    this.varAssignment = variableStore;
}

Example 3 with Operand

use of org.wso2.ballerinalang.programfile.Instruction.Operand in project ballerina by ballerina-lang.

the class CodeGenerator method visit.

public void visit(BLangTypeofExpr accessExpr) {
    Operand typeCPIndex = getTypeCPIndex(accessExpr.resolvedType);
    emit(InstructionCodes.TYPELOAD, typeCPIndex, calcAndGetExprRegIndex(accessExpr));
}

Example 4 with Operand

use of org.wso2.ballerinalang.programfile.Instruction.Operand in project ballerina by ballerina-lang.

the class CodeGenerator method processTimeoutBlock.

/* generate code for timeout block */
private void processTimeoutBlock(BLangForkJoin forkJoin, SymbolEnv forkJoinEnv, RegIndex timeoutVarRegIndex, Operand timeoutBlockAddr) {
    /* emit a GOTO instruction to jump out of the timeout block */
    Operand gotoAddr = getOperand(-1);
    this.emit(InstructionCodes.GOTO, gotoAddr);
    timeoutBlockAddr.value = nextIP();
    if (forkJoin.timeoutVariable != null) {
        visitForkJoinParameterDefs(forkJoin.timeoutVariable, forkJoinEnv);
        timeoutVarRegIndex.value = forkJoin.timeoutVariable.symbol.varIndex.value;
    }
    if (forkJoin.timeoutBody != null) {
        this.genNode(forkJoin.timeoutBody, forkJoinEnv);
    }
    gotoAddr.value = nextIP();
}

Example 5 with Operand

use of org.wso2.ballerinalang.programfile.Instruction.Operand in project ballerina by ballerina-lang.

the class CodeGenerator method visit.

public void visit(BLangLock lockNode) {
    if (lockNode.lockVariables.isEmpty()) {
        this.genNode(lockNode.body, this.env);
        return;
    }
    Operand gotoLockEndAddr = getOperand(-1);
    Instruction instructGotoLockEnd = InstructionFactory.get(InstructionCodes.GOTO, gotoLockEndAddr);
    Operand[] operands = getOperands(lockNode);
    ErrorTableAttributeInfo errorTable = createErrorTableIfAbsent(currentPkgInfo);
    int fromIP = nextIP();
    emit((InstructionCodes.LOCK), operands);
    this.genNode(lockNode.body, this.env);
    int toIP = nextIP() - 1;
    emit((InstructionCodes.UNLOCK), operands);
    emit(instructGotoLockEnd);
    ErrorTableEntry errorTableEntry = new ErrorTableEntry(fromIP, toIP, nextIP(), 0, -1);
    errorTable.addErrorTableEntry(errorTableEntry);
    emit((InstructionCodes.UNLOCK), operands);
    emit(InstructionFactory.get(InstructionCodes.THROW, getOperand(-1)));
    gotoLockEndAddr.value = nextIP();
}