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

Example 21 with RegIndex

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

the class CodeGenerator method getRegIndexInternal.

private RegIndex getRegIndexInternal(int typeTag, VariableIndex.Kind varIndexKind) {
    int index;
    switch(varIndexKind) {
        case REG:
            return new RegIndex(getNextIndex(typeTag, regIndexes), typeTag);
        case PACKAGE:
            index = getNextIndex(typeTag, pvIndexes);
            break;
        case FIELD:
            index = getNextIndex(typeTag, fieldIndexes);
            break;
        default:
            index = getNextIndex(typeTag, lvIndexes);
            break;
    }
    RegIndex regIndex = new RegIndex(index, typeTag);
    regIndex.isVarIndex = true;
    return regIndex;
}

Example 22 with RegIndex

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

the class CodeGenerator method visit.

@Override
public void visit(BLangStructLiteral structLiteral) {
    BStructSymbol structSymbol = (BStructSymbol) structLiteral.type.tsymbol;
    int pkgCPIndex = addPackageRefCPEntry(currentPkgInfo, structSymbol.pkgID);
    int structNameCPIndex = addUTF8CPEntry(currentPkgInfo, structSymbol.name.value);
    StructureRefCPEntry structureRefCPEntry = new StructureRefCPEntry(pkgCPIndex, structNameCPIndex);
    Operand structCPIndex = getOperand(currentPkgInfo.addCPEntry(structureRefCPEntry));
    // Emit an instruction to create a new struct.
    RegIndex structRegIndex = calcAndGetExprRegIndex(structLiteral);
    emit(InstructionCodes.NEWSTRUCT, structCPIndex, structRegIndex);
    // Invoke the struct default values init function here.
    if (structSymbol.defaultsValuesInitFunc != null) {
        int funcRefCPIndex = getFuncRefCPIndex(structSymbol.defaultsValuesInitFunc.symbol);
        // call funcRefCPIndex 1 structRegIndex 0
        Operand[] operands = new Operand[5];
        operands[0] = getOperand(funcRefCPIndex);
        operands[1] = getOperand(false);
        operands[2] = getOperand(1);
        operands[3] = structRegIndex;
        operands[4] = getOperand(0);
        emit(InstructionCodes.CALL, operands);
    }
    // Invoke the struct initializer here.
    if (structLiteral.initializer != null) {
        int funcRefCPIndex = getFuncRefCPIndex(structLiteral.initializer.symbol);
        // call funcRefCPIndex 1 structRegIndex 0
        Operand[] operands = new Operand[5];
        operands[0] = getOperand(funcRefCPIndex);
        operands[1] = getOperand(false);
        operands[2] = getOperand(1);
        operands[3] = structRegIndex;
        operands[4] = getOperand(0);
        emit(InstructionCodes.CALL, operands);
    }
    // Generate code the struct literal.
    for (BLangRecordKeyValue keyValue : structLiteral.keyValuePairs) {
        BLangRecordKey key = keyValue.key;
        Operand fieldIndex = key.fieldSymbol.varIndex;
        genNode(keyValue.valueExpr, this.env);
        int opcode = getOpcode(key.fieldSymbol.type.tag, InstructionCodes.IFIELDSTORE);
        emit(opcode, structRegIndex, fieldIndex, keyValue.valueExpr.regIndex);
    }
}

Example 23 with RegIndex

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

the class CodeGenerator method visit.

public void visit(BLangTernaryExpr ternaryExpr) {
    // Determine the reg index of the ternary expression and this reg index will be used by both then and else
    // expressions to store their result
    RegIndex ternaryExprRegIndex = calcAndGetExprRegIndex(ternaryExpr);
    // Generate code for the condition
    this.genNode(ternaryExpr.expr, this.env);
    Operand ifFalseJumpAddr = getOperand(-1);
    this.emit(InstructionCodes.BR_FALSE, ternaryExpr.expr.regIndex, ifFalseJumpAddr);
    // Generate code for the then expression
    ternaryExpr.thenExpr.regIndex = createLHSRegIndex(ternaryExprRegIndex);
    this.genNode(ternaryExpr.thenExpr, this.env);
    Operand endJumpAddr = getOperand(-1);
    this.emit(InstructionCodes.GOTO, endJumpAddr);
    ifFalseJumpAddr.value = nextIP();
    // Generate code for the then expression
    ternaryExpr.elseExpr.regIndex = createLHSRegIndex(ternaryExprRegIndex);
    this.genNode(ternaryExpr.elseExpr, this.env);
    endJumpAddr.value = nextIP();
}

Example 24 with RegIndex

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

the class CodeGenerator method visit.

public void visit(BLangTypeInit cIExpr) {
    BSymbol structSymbol = cIExpr.type.tsymbol;
    int pkgCPIndex = addPackageRefCPEntry(currentPkgInfo, structSymbol.pkgID);
    int structNameCPIndex = addUTF8CPEntry(currentPkgInfo, structSymbol.name.value);
    StructureRefCPEntry structureRefCPEntry = new StructureRefCPEntry(pkgCPIndex, structNameCPIndex);
    Operand structCPIndex = getOperand(currentPkgInfo.addCPEntry(structureRefCPEntry));
    // Emit an instruction to create a new struct.
    RegIndex structRegIndex = calcAndGetExprRegIndex(cIExpr);
    emit(InstructionCodes.NEWSTRUCT, structCPIndex, structRegIndex);
    // Invoke the struct initializer here.
    Operand[] operands = getFuncOperands(cIExpr.objectInitInvocation);
    Operand[] callOperands = new Operand[operands.length + 1];
    callOperands[0] = operands[0];
    callOperands[1] = operands[1];
    callOperands[2] = getOperand(operands[2].value + 1);
    callOperands[3] = structRegIndex;
    System.arraycopy(operands, 3, callOperands, 4, operands.length - 3);
    emit(InstructionCodes.CALL, callOperands);
}

Example 25 with RegIndex

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

the class CodeGenerator method getRegIndex.

private RegIndex getRegIndex(int typeTag) {
    RegIndex regIndex = getRegIndexInternal(typeTag, REG);
    addToRegIndexList(regIndex);
    return regIndex;
}