Examples with ErrorTableAttributeInfo org.ballerinalang.util.codegen.attributes.ErrorTableAttributeInfo used on opensource projects

Example 1 with ErrorTableAttributeInfo

use of org.ballerinalang.util.codegen.attributes.ErrorTableAttributeInfo in project ballerina by ballerina-lang.

the class ProgramFileReader method getAttributeInfo.

private AttributeInfo getAttributeInfo(DataInputStream dataInStream, ConstantPool constantPool) throws IOException {
    int attribNameCPIndex = dataInStream.readInt();
    UTF8CPEntry attribNameCPEntry = (UTF8CPEntry) constantPool.getCPEntry(attribNameCPIndex);
    AttributeInfo.Kind attribKind = AttributeInfo.Kind.fromString(attribNameCPEntry.getValue());
    if (attribKind == null) {
        throw new ProgramFileFormatException("unknown attribute kind " + attribNameCPEntry.getValue());
    }
    switch(attribKind) {
        case CODE_ATTRIBUTE:
            CodeAttributeInfo codeAttributeInfo = new CodeAttributeInfo();
            codeAttributeInfo.setAttributeNameIndex(attribNameCPIndex);
            codeAttributeInfo.setCodeAddrs(dataInStream.readInt());
            codeAttributeInfo.setMaxLongLocalVars(dataInStream.readUnsignedShort());
            codeAttributeInfo.setMaxDoubleLocalVars(dataInStream.readShort());
            codeAttributeInfo.setMaxStringLocalVars(dataInStream.readShort());
            codeAttributeInfo.setMaxIntLocalVars(dataInStream.readShort());
            codeAttributeInfo.setMaxByteLocalVars(dataInStream.readShort());
            codeAttributeInfo.setMaxRefLocalVars(dataInStream.readShort());
            codeAttributeInfo.setMaxLongRegs(dataInStream.readShort());
            codeAttributeInfo.setMaxDoubleRegs(dataInStream.readShort());
            codeAttributeInfo.setMaxStringRegs(dataInStream.readShort());
            codeAttributeInfo.setMaxIntRegs(dataInStream.readShort());
            codeAttributeInfo.setMaxByteRegs(dataInStream.readShort());
            codeAttributeInfo.setMaxRefRegs(dataInStream.readShort());
            return codeAttributeInfo;
        case VARIABLE_TYPE_COUNT_ATTRIBUTE:
            VarTypeCountAttributeInfo varCountAttributeInfo = new VarTypeCountAttributeInfo(attribNameCPIndex);
            varCountAttributeInfo.setMaxLongVars(dataInStream.readShort());
            varCountAttributeInfo.setMaxDoubleVars(dataInStream.readShort());
            varCountAttributeInfo.setMaxStringVars(dataInStream.readShort());
            varCountAttributeInfo.setMaxIntVars(dataInStream.readShort());
            varCountAttributeInfo.setMaxByteVars(dataInStream.readShort());
            varCountAttributeInfo.setMaxRefVars(dataInStream.readShort());
            return varCountAttributeInfo;
        case ERROR_TABLE:
            ErrorTableAttributeInfo tableAttributeInfo = new ErrorTableAttributeInfo(attribNameCPIndex);
            int tableEntryCount = dataInStream.readShort();
            for (int i = 0; i < tableEntryCount; i++) {
                int ipFrom = dataInStream.readInt();
                int ipTo = dataInStream.readInt();
                int ipTarget = dataInStream.readInt();
                int priority = dataInStream.readInt();
                int errorStructCPIndex = dataInStream.readInt();
                ErrorTableEntry tableEntry = new ErrorTableEntry(ipFrom, ipTo, ipTarget, priority, errorStructCPIndex);
                if (errorStructCPIndex != -1) {
                    StructureRefCPEntry structureRefCPEntry = (StructureRefCPEntry) constantPool.getCPEntry(errorStructCPIndex);
                    tableEntry.setError((StructInfo) structureRefCPEntry.getStructureTypeInfo());
                }
                tableAttributeInfo.addErrorTableEntry(tableEntry);
            }
            return tableAttributeInfo;
        case LOCAL_VARIABLES_ATTRIBUTE:
            LocalVariableAttributeInfo localVarAttrInfo = new LocalVariableAttributeInfo(attribNameCPIndex);
            int localVarInfoCount = dataInStream.readShort();
            for (int i = 0; i < localVarInfoCount; i++) {
                LocalVariableInfo localVariableInfo = getLocalVariableInfo(dataInStream, constantPool);
                localVarAttrInfo.addLocalVarInfo(localVariableInfo);
            }
            return localVarAttrInfo;
        case LINE_NUMBER_TABLE_ATTRIBUTE:
            LineNumberTableAttributeInfo lnNoTblAttrInfo = new LineNumberTableAttributeInfo(attribNameCPIndex);
            int lineNoInfoCount = dataInStream.readShort();
            for (int i = 0; i < lineNoInfoCount; i++) {
                LineNumberInfo lineNumberInfo = getLineNumberInfo(dataInStream, constantPool);
                lnNoTblAttrInfo.addLineNumberInfo(lineNumberInfo);
            }
            return lnNoTblAttrInfo;
        case DEFAULT_VALUE_ATTRIBUTE:
            DefaultValue defaultValue = getDefaultValue(dataInStream, constantPool);
            DefaultValueAttributeInfo defaultValAttrInfo = new DefaultValueAttributeInfo(attribNameCPIndex, defaultValue);
            return defaultValAttrInfo;
        case PARAMETER_DEFAULTS_ATTRIBUTE:
            ParamDefaultValueAttributeInfo paramDefaultValAttrInfo = new ParamDefaultValueAttributeInfo(attribNameCPIndex);
            int paramDefaultsInfoCount = dataInStream.readShort();
            for (int i = 0; i < paramDefaultsInfoCount; i++) {
                DefaultValue paramDefaultValue = getDefaultValue(dataInStream, constantPool);
                paramDefaultValAttrInfo.addParamDefaultValueInfo(paramDefaultValue);
            }
            return paramDefaultValAttrInfo;
        default:
            throw new ProgramFileFormatException("unsupported attribute kind " + attribNameCPEntry.getValue());
    }
}

Example 2 with ErrorTableAttributeInfo

use of org.ballerinalang.util.codegen.attributes.ErrorTableAttributeInfo in project ballerina by ballerina-lang.

the class ErrorTableEntry method getMatch.

public static ErrorTableEntry getMatch(PackageInfo packageInfo, int currentIP, final BStruct error) {
    ErrorTableAttributeInfo errorTable = (ErrorTableAttributeInfo) packageInfo.getAttributeInfo(AttributeInfo.Kind.ERROR_TABLE);
    List<ErrorTableEntry> errorTableEntries = errorTable != null ? errorTable.getErrorTableEntriesList() : new ArrayList<>();
    List<MatchedEntry> rangeMatched = new ArrayList<>();
    errorTableEntries.stream().filter(errorTableEntry -> errorTableEntry.matchRange(currentIP)).forEach(errorTableEntry -> {
        MatchedEntry entry = new MatchedEntry();
        entry.errorTableEntry = errorTableEntry;
        entry.ipSize = errorTableEntry.ipTo - errorTableEntry.ipFrom;
        if (errorTableEntry.getErrorStructCPIndex() == -1) {
            // match any.
            entry.status = 2;
            rangeMatched.add(entry);
        } else if (errorTableEntry.getError().getType().equals(error.getType())) {
            // exact match.
            entry.status = 0;
            rangeMatched.add(entry);
        } else if (CPU.checkStructEquivalency((BStructType) error.getType(), (BStructType) errorTableEntry.getError().getType())) {
            entry.status = 1;
            rangeMatched.add(entry);
        }
    });
    if (rangeMatched.size() == 0) {
        return null;
    }
    if (rangeMatched.size() == 1) {
        return rangeMatched.get(0).errorTableEntry;
    }
    MatchedEntry[] matchedEntries = rangeMatched.stream().sorted(Comparator.comparingInt(o -> o.ipSize)).toArray(MatchedEntry[]::new);
    int currentSize = 0;
    ErrorTableEntry errorTableEntry = null;
    for (int i = 0; i < matchedEntries.length; i++) {
        MatchedEntry entry = matchedEntries[i];
        if (currentSize < entry.ipSize) {
            if (errorTableEntry == null) {
                // Expand scope.
                currentSize = entry.ipSize;
            } else {
                // Return best match.
                return errorTableEntry;
            }
        }
        if (entry.status == 0) {
            // Best case.
            return entry.errorTableEntry;
        } else {
            if (errorTableEntry == null) {
                errorTableEntry = entry.errorTableEntry;
            } else {
                if (errorTableEntry.priority > entry.errorTableEntry.priority) {
                    // found a high order entry
                    errorTableEntry = entry.errorTableEntry;
                }
            }
        }
    }
    return errorTableEntry;
}