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

Example 21 with Operand

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

the class CodeGenerator method visit.

public void visit(BLangTransformerInvocation iExpr) {
    BInvokableSymbol transformerSymbol = (BInvokableSymbol) iExpr.symbol;
    int pkgRefCPIndex = addPackageRefCPEntry(currentPkgInfo, transformerSymbol.pkgID);
    int transformerNameCPIndex = addUTF8CPEntry(currentPkgInfo, transformerSymbol.name.value);
    TransformerRefCPEntry transformerRefCPEntry = new TransformerRefCPEntry(pkgRefCPIndex, transformerNameCPIndex);
    int transformerRefCPIndex = currentPkgInfo.addCPEntry(transformerRefCPEntry);
    Operand[] operands = getFuncOperands(iExpr, transformerRefCPIndex);
    emit(InstructionCodes.TCALL, operands);
}

Example 22 with Operand

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

the class CodeGenerator method visit.

public void visit(BLangForeach foreach) {
    // Calculate temporary scope variables for iteration.
    Operand iteratorVar = getLVIndex(TypeTags.ITERATOR);
    Operand conditionVar = getLVIndex(TypeTags.BOOLEAN);
    // Create new Iterator for given collection.
    this.genNode(foreach.collection, env);
    this.emit(InstructionCodes.ITR_NEW, foreach.collection.regIndex, iteratorVar);
    Operand foreachStartAddress = new Operand(nextIP());
    Operand foreachEndAddress = new Operand(-1);
    Instruction gotoStartInstruction = InstructionFactory.get(InstructionCodes.GOTO, foreachStartAddress);
    Instruction gotoEndInstruction = InstructionFactory.get(InstructionCodes.GOTO, foreachEndAddress);
    // Checks given iterator has a next value.
    this.emit(InstructionCodes.ITR_HAS_NEXT, iteratorVar, conditionVar);
    this.emit(InstructionCodes.BR_FALSE, conditionVar, foreachEndAddress);
    // assign variables.
    generateForeachVarAssignment(foreach, iteratorVar);
    this.loopResetInstructionStack.push(gotoStartInstruction);
    this.loopExitInstructionStack.push(gotoEndInstruction);
    // generate foreach body.
    this.genNode(foreach.body, env);
    this.loopResetInstructionStack.pop();
    this.loopExitInstructionStack.pop();
    // move to next iteration.
    this.emit(gotoStartInstruction);
    foreachEndAddress.value = this.nextIP();
}

Example 23 with Operand

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

the class CodeGenerator method generateForeachVarAssignment.

// private helper methods of visitors.
private void generateForeachVarAssignment(BLangForeach foreach, Operand iteratorIndex) {
    List<BLangVariableReference> variables = foreach.varRefs.stream().map(expr -> (BLangVariableReference) expr).collect(Collectors.toList());
    // create Local variable Info entries.
    variables.stream().filter(// Ignoring ignored ("_") variables.
    v -> v.type.tag != TypeTags.NONE).forEach(varRef -> visitVarSymbol(varRef.symbol, lvIndexes, localVarAttrInfo));
    List<Operand> nextOperands = new ArrayList<>();
    nextOperands.add(iteratorIndex);
    nextOperands.add(new Operand(variables.size()));
    foreach.varTypes.forEach(v -> nextOperands.add(new Operand(v.tag)));
    nextOperands.add(new Operand(variables.size()));
    for (int i = 0; i < variables.size(); i++) {
        BLangVariableReference varRef = variables.get(i);
        nextOperands.add(Optional.ofNullable(varRef.symbol.varIndex).orElse(getRegIndex(foreach.varTypes.get(i).tag)));
    }
    this.emit(InstructionCodes.ITR_NEXT, nextOperands.toArray(new Operand[0]));
}

Example 24 with Operand

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

the class CodeGenerator method getFuncOperands.

private Operand[] getFuncOperands(BLangInvocation iExpr, int funcRefCPIndex) {
    // call funcRefCPIndex, nArgRegs, argRegs[nArgRegs], nRetRegs, retRegs[nRetRegs]
    int i = 0;
    int nArgRegs = iExpr.requiredArgs.size() + iExpr.namedArgs.size() + iExpr.restArgs.size();
    int nRetRegs = iExpr.types.size();
    int flags = FunctionFlags.NOTHING;
    Operand[] operands = new Operand[nArgRegs + nRetRegs + 4];
    operands[i++] = getOperand(funcRefCPIndex);
    if (iExpr.async) {
        flags = FunctionFlags.markAsync(flags);
    }
    if (iExpr.actionInvocation) {
        flags = FunctionFlags.markObserved(flags);
    }
    operands[i++] = getOperand(flags);
    operands[i++] = getOperand(nArgRegs);
    // Write required arguments
    for (BLangExpression argExpr : iExpr.requiredArgs) {
        operands[i++] = genNode(argExpr, this.env).regIndex;
    }
    // Write named arguments
    i = generateNamedArgs(iExpr, operands, i);
    // Write rest arguments
    for (BLangExpression argExpr : iExpr.restArgs) {
        operands[i++] = genNode(argExpr, this.env).regIndex;
    }
    // Calculate registers to store return values
    operands[i++] = getOperand(nRetRegs);
    RegIndex[] iExprRegIndexes;
    if (iExpr.regIndex != null) {
        iExprRegIndexes = new RegIndex[nRetRegs];
        iExprRegIndexes[0] = iExpr.regIndex;
    } else {
        iExprRegIndexes = new RegIndex[nRetRegs];
    }
    for (int j = 0; j < nRetRegs; j++) {
        RegIndex regIndex = calcAndGetExprRegIndex(iExprRegIndexes[j], iExpr.getTypes().get(j).tag);
        iExprRegIndexes[j] = regIndex;
        operands[i++] = regIndex;
    }
    iExpr.setRegIndexes(iExprRegIndexes);
    return operands;
}

Example 25 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(BLangJSONAccessExpr jsonAccessExpr) {
    boolean variableStore = this.varAssignment;
    this.varAssignment = false;
    genNode(jsonAccessExpr.expr, this.env);
    Operand varRefRegIndex = jsonAccessExpr.expr.regIndex;
    genNode(jsonAccessExpr.indexExpr, this.env);
    Operand keyRegIndex = jsonAccessExpr.indexExpr.regIndex;
    if (jsonAccessExpr.indexExpr.type.tag == TypeTags.INT) {
        if (variableStore) {
            emit(InstructionCodes.JSONASTORE, varRefRegIndex, keyRegIndex, jsonAccessExpr.regIndex);
        } else {
            emit(InstructionCodes.JSONALOAD, varRefRegIndex, keyRegIndex, calcAndGetExprRegIndex(jsonAccessExpr));
        }
    } else {
        if (variableStore) {
            emit(InstructionCodes.JSONSTORE, varRefRegIndex, keyRegIndex, jsonAccessExpr.regIndex);
        } else {
            emit(InstructionCodes.JSONLOAD, varRefRegIndex, keyRegIndex, calcAndGetExprRegIndex(jsonAccessExpr));
        }
    }
    this.varAssignment = variableStore;
}