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

Example 41 with RegIndex

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

the class CodeGenerator method visit.

public void visit(BLangCatch bLangCatch) {
    // Define local variable index for Error.
    BLangVariable variable = bLangCatch.param;
    RegIndex lvIndex = getLVIndex(variable.symbol.type.tag);
    variable.symbol.varIndex = lvIndex;
    emit(InstructionFactory.get(InstructionCodes.ERRSTORE, lvIndex));
    // Visit Catch Block.
    genNode(bLangCatch.body, env);
}

Example 42 with RegIndex

use of org.wso2.ballerinalang.programfile.Instruction.RegIndex 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);
    }
}