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

Example 16 with Operand

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

the class CodeGenerator method getOperands.

private Operand[] getOperands(BLangLock lockNode) {
    Operand[] operands = new Operand[(lockNode.lockVariables.size() * 2) + 1];
    int i = 0;
    operands[i++] = new Operand(lockNode.lockVariables.size());
    for (BVarSymbol varSymbol : lockNode.lockVariables) {
        int typeSigCPIndex = addUTF8CPEntry(currentPkgInfo, varSymbol.getType().getDesc());
        TypeRefCPEntry typeRefCPEntry = new TypeRefCPEntry(typeSigCPIndex);
        operands[i++] = getOperand(currentPkgInfo.addCPEntry(typeRefCPEntry));
        operands[i++] = varSymbol.varIndex;
    }
    return operands;
}

Example 17 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(BLangPackageVarRef packageVarRef) {
    Operand gvIndex = packageVarRef.symbol.varIndex;
    if (varAssignment) {
        int opcode = getOpcode(packageVarRef.type.tag, InstructionCodes.IGSTORE);
        emit(opcode, packageVarRef.regIndex, gvIndex);
        return;
    }
    int opcode = getOpcode(packageVarRef.type.tag, InstructionCodes.IGLOAD);
    packageVarRef.regIndex = calcAndGetExprRegIndex(packageVarRef);
    emit(opcode, gvIndex, packageVarRef.regIndex);
}

Example 18 with Operand

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

the class CodeGenerator method generateFinallyInstructions.

private void generateFinallyInstructions(BLangStatement statement, NodeKind... expectedParentKinds) {
    BLangStatement current = statement;
    while (current != null && current.statementLink.parent != null) {
        BLangStatement parent = current.statementLink.parent.statement;
        for (NodeKind expected : expectedParentKinds) {
            if (expected == parent.getKind()) {
                return;
            }
        }
        if (NodeKind.TRY == parent.getKind()) {
            BLangTryCatchFinally tryCatchFinally = (BLangTryCatchFinally) parent;
            if (tryCatchFinally.finallyBody != null && current != tryCatchFinally.finallyBody) {
                genNode(tryCatchFinally.finallyBody, env);
            }
        } else if (NodeKind.LOCK == parent.getKind()) {
            BLangLock lockNode = (BLangLock) parent;
            if (!lockNode.lockVariables.isEmpty()) {
                Operand[] operands = getOperands(lockNode);
                emit((InstructionCodes.UNLOCK), operands);
            }
        }
        current = parent;
    }
}

Example 19 with Operand

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

the class CodeGenerator method processJoinBlock.

/* generate code for Join block */
private void processJoinBlock(BLangForkJoin forkJoin, ForkjoinInfo forkjoinInfo, SymbolEnv forkJoinEnv, RegIndex joinVarRegIndex, Operand joinBlockAddr) {
    UTF8CPEntry joinType = new UTF8CPEntry(forkJoin.joinType.name());
    int joinTypeCPIndex = this.currentPkgInfo.addCPEntry(joinType);
    forkjoinInfo.setJoinType(forkJoin.joinType.name());
    forkjoinInfo.setJoinTypeCPIndex(joinTypeCPIndex);
    joinBlockAddr.value = nextIP();
    if (forkJoin.joinResultVar != null) {
        visitForkJoinParameterDefs(forkJoin.joinResultVar, forkJoinEnv);
        joinVarRegIndex.value = forkJoin.joinResultVar.symbol.varIndex.value;
    }
    if (forkJoin.joinedBody != null) {
        this.genNode(forkJoin.joinedBody, forkJoinEnv);
    }
}

Example 20 with Operand

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

the class CodeGenerator method visit.

public void visit(BLangIf ifNode) {
    addLineNumberInfo(ifNode.pos);
    // Generate code for the if condition evaluation
    genNode(ifNode.expr, this.env);
    Operand ifCondJumpAddr = getOperand(-1);
    emit(InstructionCodes.BR_FALSE, ifNode.expr.regIndex, ifCondJumpAddr);
    // Generate code for the then body
    genNode(ifNode.body, this.env);
    Operand endJumpAddr = getOperand(-1);
    emit(InstructionCodes.GOTO, endJumpAddr);
    ifCondJumpAddr.value = nextIP();
    // Visit else statement if any
    if (ifNode.elseStmt != null) {
        genNode(ifNode.elseStmt, this.env);
    }
    endJumpAddr.value = nextIP();
}