private static string ParseAugments(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Augments)
{
string augment = null;
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
current = symbols.NextNonEOLSymbol();
augment = current.ToString();
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseBracket);
return(augment);
}
else if (current != null)
{
symbols.PutBack(current);
}
return(null);
}
private static string ParseDescription(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Description);
return symbols.NextNonEOLSymbol().ToString().Trim(new char[] { '"' });
}
private static string ParseAugments(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Augments)
{
string augment = null;
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
current = symbols.NextNonEOLSymbol();
augment = current.ToString();
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseBracket);
return augment;
}
else if (current != null)
{
symbols.PutBack(current);
}
return null;
}
private static string ParseDescription(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Description);
return(symbols.NextNonEOLSymbol().ToString().Trim(new char[] { '"' }));
}
/// <summary>
/// Creates a <see cref="Choice"/> instance.
/// </summary>
/// <param name="module"></param>
/// <param name="name"></param>
/// <param name="lexer"></param>
public Choice(IModule module, string name, ISymbolEnumerator symbols)
: base(module, name)
{
while (symbols.NextNonEOLSymbol() != Symbol.OpenBracket)
{
}
while (symbols.NextNonEOLSymbol() != Symbol.CloseBracket)
{
}
}
/// <summary>
/// Creates a <see cref="Choice"/> instance.
/// </summary>
/// <param name="module"></param>
/// <param name="name"></param>
/// <param name="lexer"></param>
public Choice(IModule module, string name, ISymbolEnumerator symbols)
: base(module, name)
{
while (symbols.NextNonEOLSymbol() != Symbol.OpenBracket)
{
}
while (symbols.NextNonEOLSymbol() != Symbol.CloseBracket)
{
}
}
private static DisplayHint ParseDisplayHint(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.DisplayHint)
{
return(new DisplayHint(symbols.NextNonEOLSymbol().ToString().Trim(new char[] { '"' })));
}
symbols.PutBack(current);
return(null);
}
private static DisplayHint ParseDisplayHint(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.DisplayHint)
{
return new DisplayHint(symbols.NextNonEOLSymbol().ToString().Trim(new char[] { '"' }));
}
symbols.PutBack(current);
return null;
}
public Macro(IModule module, SymbolList preAssignSymbols, ISymbolEnumerator symbols)
{
_module = module;
_name = preAssignSymbols[0].ToString();
while (symbols.NextNonEOLSymbol() != Symbol.Begin)
{
}
while (symbols.NextNonEOLSymbol() != Symbol.End)
{
}
}
public Macro(IModule module, SymbolList preAssignSymbols, ISymbolEnumerator symbols)
{
_module = module;
_name = preAssignSymbols[0].ToString();
while (symbols.NextNonEOLSymbol() != Symbol.Begin)
{
}
while (symbols.NextNonEOLSymbol() != Symbol.End)
{
}
}
private static string ParseUnits(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Units)
{
return(symbols.NextNonEOLSymbol().ToString());
}
else if (current != null)
{
symbols.PutBack(current);
}
return(null);
}
private static string ParseDescription(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Description)
{
return(symbols.NextNonEOLSymbol().ToString().Trim(new char[] { '"' }));
}
else if (current != null)
{
symbols.PutBack(current);
}
return(null);
}
private static Status ParseStatus(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Status);
try
{
return (Status)Enum.Parse(typeof(Status), symbols.NextNonEOLSymbol().ToString());
}
catch (ArgumentException)
{
current.Assert(false, "Invalid/Unknown status");
}
return Status.current;
}
/// <summary>
/// Creates an <see cref="IntegerType"/> instance.
/// </summary>
/// <param name="module"></param>
/// <param name="name"></param>
/// <param name="enumerator"></param>
public IntegerType(IModule module, string name, Symbol type, ISymbolEnumerator symbols)
: base(module, name)
{
Types?t = GetExactType(type);
type.Assert(t.HasValue, "Unknown symbol for unsigned type!");
_type = t.Value;
_isEnumeration = false;
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenBracket)
{
_isEnumeration = true;
symbols.PutBack(current);
_map = Lexer.DecodeEnumerations(symbols);
}
else if (current == Symbol.OpenParentheses)
{
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
current.Assert(!_ranges.IsSizeDeclaration, "SIZE keyword is not allowed for ranges of integer types!");
}
else
{
symbols.PutBack(current);
}
}
/// <summary>
/// Creates an <see cref="IntegerType"/> instance.
/// </summary>
/// <param name="module"></param>
/// <param name="name"></param>
/// <param name="enumerator"></param>
public IntegerType(IModule module, string name, Symbol type, ISymbolEnumerator symbols)
: base (module, name)
{
Types? t = GetExactType(type);
type.Assert(t.HasValue, "Unknown symbol for unsigned type!");
_type = t.Value;
_isEnumeration = false;
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenBracket)
{
_isEnumeration = true;
symbols.PutBack(current);
_map = Lexer.DecodeEnumerations(symbols);
}
else if (current == Symbol.OpenParentheses)
{
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
current.Assert(!_ranges.IsSizeDeclaration, "SIZE keyword is not allowed for ranges of integer types!");
}
else
{
symbols.PutBack(current);
}
}
private static ITypeAssignment ParseSyntax(IModule module, ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Syntax);
return(Lexer.ParseBasicTypeDef(module, String.Empty, symbols, isMacroSyntax: true));
}
private static Status ParseStatus(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Status);
try
{
return((Status)Enum.Parse(typeof(Status), symbols.NextNonEOLSymbol().ToString()));
}
catch (ArgumentException)
{
current.Assert(false, "Invalid/Unknown status");
}
return(Status.current);
}
private static string ParseDefVal(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.DefVal)
{
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
string defVal = null;
current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenBracket)
{
int depth = 1;
// TODO: decode this.
while (depth > 0)
{
current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenBracket)
{
depth++;
}
else if (current == Symbol.CloseBracket)
{
depth--;
}
}
}
else
{
defVal = current.ToString();
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseBracket);
}
return defVal;
}
else if (current != null)
{
symbols.PutBack(current);
}
return null;
}
private static IList <string> ParseIndices(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Index)
{
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
List <string> indices = new List <string>();
while (current != Symbol.CloseBracket)
{
current = symbols.NextNonEOLSymbol();
bool lastIndex = false;
if (current == Symbol.Implied)
{
current = symbols.NextNonEOLSymbol();
lastIndex = true; // 'IMPLIED' may only be used for last index
}
current.Assert((current != Symbol.Comma) && (current != Symbol.CloseBracket), "Expected index name but found symbol!");
indices.Add(current.ToString());
current = symbols.NextNonEOLSymbol();
if (lastIndex)
{
current.Expect(Symbol.CloseBracket);
}
else
{
current.Expect(Symbol.Comma, Symbol.CloseBracket);
}
}
return(indices);
}
else if (current != null)
{
symbols.PutBack(current);
}
return(null);
}
private static string ParseDefVal(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.DefVal)
{
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
string defVal = null;
current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenBracket)
{
int depth = 1;
// TODO: decode this.
while (depth > 0)
{
current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenBracket)
{
depth++;
}
else if (current == Symbol.CloseBracket)
{
depth--;
}
}
}
else
{
defVal = current.ToString();
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseBracket);
}
return(defVal);
}
else if (current != null)
{
symbols.PutBack(current);
}
return(null);
}
private static string ParseReference(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Reference)
{
string reference = symbols.NextNonEOLSymbol().ToString();
if ((reference.Length >= 2) && reference.StartsWith("\"") && reference.EndsWith("\""))
{
return reference.Substring(1, reference.Length-2);
}
return reference;
}
symbols.PutBack(current);
return null;
}
private static string ParseReference(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Reference)
{
string reference = symbols.NextNonEOLSymbol().ToString();
if ((reference.Length >= 2) && reference.StartsWith("\"") && reference.EndsWith("\""))
{
return(reference.Substring(1, reference.Length - 2));
}
return(reference);
}
symbols.PutBack(current);
return(null);
}
private void ParseProperties(SymbolList header)
{
ISymbolEnumerator headerSymbols = header.GetSymbolEnumerator();
Symbol temp = headerSymbols.NextNonEOLSymbol();
// Skip name
temp = headerSymbols.NextNonEOLSymbol();
temp.Expect(Symbol.ObjectType);
_syntax = ParseSyntax(Module, headerSymbols);
_units = ParseUnits(headerSymbols);
_access = ParseAccess(headerSymbols);
_status = ParseStatus(headerSymbols);
_description = ParseDescription(headerSymbols);
_reference = ParseReference(headerSymbols);
_indices = ParseIndices(headerSymbols);
_augments = ParseAugments(headerSymbols);
_defVal = ParseDefVal(headerSymbols);
}
public TrapType(IModule module, SymbolList preAssignSymbols, ISymbolEnumerator symbols)
{
_module = module;
_name = preAssignSymbols[0].ToString();
Symbol valueSymbol = symbols.NextNonEOLSymbol();
bool succeeded = int.TryParse(valueSymbol.ToString(), out _value);
valueSymbol.Assert(succeeded, "not a decimal");
}
private static MaxAccess ParseAccess(ISymbolEnumerator symbols)
{
MaxAccess access = MaxAccess.notAccessible;
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.MaxAccess, Symbol.Access);
current = symbols.NextNonEOLSymbol();
switch (current.ToString())
{
case "not-accessible":
access = MaxAccess.notAccessible;
break;
case "accessible-for-notify":
access = MaxAccess.accessibleForNotify;
break;
case "read-only":
access = MaxAccess.readOnly;
break;
case "read-write":
access = MaxAccess.readWrite;
break;
case "read-create":
access = MaxAccess.readCreate;
break;
case "write-only":
access = MaxAccess.readWrite;
break;
default:
current.Assert(false, "Invalid/Unknown access");
break;
}
return(access);
}
public TrapType(IModule module, SymbolList preAssignSymbols, ISymbolEnumerator symbols)
{
_module = module;
_name = preAssignSymbols[0].ToString();
Symbol valueSymbol = symbols.NextNonEOLSymbol();
bool succeeded = int.TryParse(valueSymbol.ToString(), out _value);
valueSymbol.Assert(succeeded, "not a decimal");
}
private void ParseEntities(ISymbolEnumerator symbols)
{
Symbol temp = symbols.NextNonEOLSymbol();
SymbolList buffer = new SymbolList();
while (temp != Symbol.End)
{
if (temp == Symbol.Assign)
{
ParseEntity(buffer, symbols);
buffer.Clear();
// skip linebreaks behind an entity
temp = symbols.NextNonEOLSymbol();
}
else
{
buffer.Add(temp);
temp = symbols.NextSymbol();
}
}
}
/// <summary>
/// Creates a <see cref="Sequence" /> instance.
/// </summary>
/// <param name="module">The module.</param>
/// <param name="name">The name.</param>
/// <param name="symbols">The enumerator.</param>
public Sequence(IModule module, string name, ISymbolEnumerator symbols)
: base(module, name)
{
// parse between ( )
Symbol temp = symbols.NextNonEOLSymbol();
int bracketSection = 0;
temp.Expect(Symbol.OpenBracket);
bracketSection++;
while (bracketSection > 0)
{
temp = symbols.NextNonEOLSymbol();
if (temp == Symbol.OpenBracket)
{
bracketSection++;
}
else if (temp == Symbol.CloseBracket)
{
bracketSection--;
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MibDocument"/> class.
/// </summary>
/// <param name="lexer">The lexer.</param>
public MibDocument(Lexer lexer)
{
ISymbolEnumerator symbols = lexer.GetEnumerator();
Symbol current;
while ((current = symbols.NextNonEOLSymbol()) != null)
{
symbols.PutBack(current);
_modules.Add(new MibModule(symbols));
}
}
/// <summary>
/// Creates a <see cref="Sequence" /> instance.
/// </summary>
/// <param name="module">The module.</param>
/// <param name="name">The name.</param>
/// <param name="symbols">The enumerator.</param>
public Sequence(IModule module, string name, ISymbolEnumerator symbols)
: base(module, name)
{
// parse between ( )
Symbol temp = symbols.NextNonEOLSymbol();
int bracketSection = 0;
temp.Expect(Symbol.OpenBracket);
bracketSection++;
while (bracketSection > 0)
{
temp = symbols.NextNonEOLSymbol();
if (temp == Symbol.OpenBracket)
{
bracketSection++;
}
else if (temp == Symbol.CloseBracket)
{
bracketSection--;
}
}
}
public MibModule(ISymbolEnumerator symbols)
{
if (symbols == null)
{
throw new ArgumentNullException("lexer");
}
Symbol temp = symbols.NextNonEOLSymbol();
temp.AssertIsValidIdentifier();
_name = temp.ToString().ToUpperInvariant(); // all module names are uppercase
temp = symbols.NextNonEOLSymbol();
temp.Expect(Symbol.Definitions);
temp = symbols.NextNonEOLSymbol();
temp.Expect(Symbol.Assign);
temp = symbols.NextSymbol();
temp.Expect(Symbol.Begin);
temp = symbols.NextNonEOLSymbol();
if (temp == Symbol.Imports)
{
_imports = ParseDependents(symbols);
}
else if (temp == Symbol.Exports)
{
_exports = ParseExports(symbols);
}
else
{
symbols.PutBack(temp);
}
ParseEntities(symbols);
}
public MibModule(ISymbolEnumerator symbols)
{
if (symbols == null)
{
throw new ArgumentNullException("lexer");
}
Symbol temp = symbols.NextNonEOLSymbol();
temp.AssertIsValidIdentifier();
_name = temp.ToString().ToUpperInvariant(); // all module names are uppercase
temp = symbols.NextNonEOLSymbol();
temp.Expect(Symbol.Definitions);
temp = symbols.NextNonEOLSymbol();
temp.Expect(Symbol.Assign);
temp = symbols.NextSymbol();
temp.Expect(Symbol.Begin);
temp = symbols.NextNonEOLSymbol();
if (temp == Symbol.Imports)
{
_imports = ParseDependents(symbols);
}
else if (temp == Symbol.Exports)
{
_exports = ParseExports(symbols);
}
else
{
symbols.PutBack(temp);
}
ParseEntities(symbols);
}
public OctetStringType(IModule module, string name, ISymbolEnumerator symbols)
: base(module, name)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenParentheses)
{
symbols.PutBack(current);
_size = Lexer.DecodeRanges(symbols);
current.Assert(_size.IsSizeDeclaration, "SIZE keyword is required for ranges of octet string!");
}
else
{
symbols.PutBack(current);
_size = new ValueRanges(isSizeDecl: true);
}
}
public OctetStringType(IModule module, string name, ISymbolEnumerator symbols)
: base(module, name)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenParentheses)
{
symbols.PutBack(current);
_size = Lexer.DecodeRanges(symbols);
current.Assert(_size.IsSizeDeclaration, "SIZE keyword is required for ranges of octet string!");
}
else
{
symbols.PutBack(current);
_size = new ValueRanges(isSizeDecl: true);
}
}
public UnsignedType(IModule module, string name, Symbol type, ISymbolEnumerator symbols)
: base(module, name)
{
Types? t = GetExactType(type);
type.Assert(t.HasValue, "Unknown symbol for unsigned type!");
_type = t.Value;
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenParentheses)
{
current.Assert((_type != Types.Counter64), "Ranges are not supported for Counter64 type!"); // our internal struct can only hold int64 values
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
current.Assert(!_ranges.IsSizeDeclaration, "SIZE keyword is not allowed for ranges of unsigned types!");
}
else
{
symbols.PutBack(current);
}
}
private static ITypeAssignment ParseSyntax(IModule module, ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Syntax);
/*
* RFC2579 definition:
* Syntax ::= -- Must be one of the following:
* -- a base type (or its refinement), or
* -- a BITS pseudo-type
* type
* | "BITS" "{" NamedBits "}"
*
* From section 3.5:
* The data structure must be one of the alternatives defined
* in the ObjectSyntax CHOICE or the BITS construct. Note
* that this means that the SYNTAX clause of a Textual
* Convention can not refer to a previously defined Textual
* Convention.
*
* The SYNTAX clause of a TEXTUAL CONVENTION macro may be
* sub-typed in the same way as the SYNTAX clause of an
* OBJECT-TYPE macro.
*
* Therefore the possible values are (grouped by underlying type):
* INTEGER, Integer32
* OCTET STRING, Opaque
* OBJECT IDENTIFIER
* IpAddress
* Counter64
* Unsigned32, Counter32, Gauge32, TimeTicks
* BITS
* With appropriate sub-typing.
*/
return(Lexer.ParseBasicTypeDef(module, String.Empty, symbols, isMacroSyntax: true));
}
public UnsignedType(IModule module, string name, Symbol type, ISymbolEnumerator symbols)
: base(module, name)
{
Types?t = GetExactType(type);
type.Assert(t.HasValue, "Unknown symbol for unsigned type!");
_type = t.Value;
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenParentheses)
{
current.Assert((_type != Types.Counter64), "Ranges are not supported for Counter64 type!"); // our internal struct can only hold int64 values
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
current.Assert(!_ranges.IsSizeDeclaration, "SIZE keyword is not allowed for ranges of unsigned types!");
}
else
{
symbols.PutBack(current);
}
}
public static ValueMap DecodeEnumerations(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
ValueMap map = new ValueMap();
do
{
current = symbols.NextNonEOLSymbol();
string identifier = current.ToString();
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenParentheses);
current = symbols.NextNonEOLSymbol();
Int64 enumValue;
if (Int64.TryParse(current.ToString(), out enumValue))
{
try
{
// Have to include the number as it seems repeated identifiers are allowed ??
map.Add(enumValue, String.Format("{0}({1})", identifier, enumValue));
}
catch (ArgumentException ex)
{
current.Assert(false, ex.Message);
}
}
else
{
// Need to get "DefinedValue".
}
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
current = symbols.NextNonEOLSymbol();
} while (current == Symbol.Comma);
current.Expect(Symbol.CloseBracket);
return(map);
}
private static ITypeAssignment ParseSyntax(IModule module, ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Syntax);
/*
* RFC2579 definition:
* Syntax ::= -- Must be one of the following:
* -- a base type (or its refinement), or
* -- a BITS pseudo-type
* type
* | "BITS" "{" NamedBits "}"
*
* From section 3.5:
* The data structure must be one of the alternatives defined
* in the ObjectSyntax CHOICE or the BITS construct. Note
* that this means that the SYNTAX clause of a Textual
* Convention can not refer to a previously defined Textual
* Convention.
*
* The SYNTAX clause of a TEXTUAL CONVENTION macro may be
* sub-typed in the same way as the SYNTAX clause of an
* OBJECT-TYPE macro.
*
* Therefore the possible values are (grouped by underlying type):
* INTEGER, Integer32
* OCTET STRING, Opaque
* OBJECT IDENTIFIER
* IpAddress
* Counter64
* Unsigned32, Counter32, Gauge32, TimeTicks
* BITS
* With appropriate sub-typing.
*/
return Lexer.ParseBasicTypeDef(module, String.Empty, symbols, isMacroSyntax: true);
}
public static ITypeAssignment ParseBasicTypeDef(IModule module, string name, ISymbolEnumerator symbols, bool isMacroSyntax = false)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Bits)
{
return(new BitsType(module, name, symbols));
}
if (IntegerType.IsIntegerType(current))
{
return(new IntegerType(module, name, current, symbols));
}
if (UnsignedType.IsUnsignedType(current))
{
return(new UnsignedType(module, name, current, symbols));
}
if (current == Symbol.Opaque)
{
return(new OpaqueType(module, name, symbols));
}
if (current == Symbol.IpAddress)
{
return(new IpAddressType(module, name, symbols));
}
if (current == Symbol.TextualConvention)
{
return(new TextualConvention(module, name, symbols));
}
if (current == Symbol.Octet)
{
Symbol next = symbols.NextNonEOLSymbol();
if (next == Symbol.String)
{
return(new OctetStringType(module, name, symbols));
}
symbols.PutBack(next);
}
if (current == Symbol.Object)
{
Symbol next = symbols.NextNonEOLSymbol();
if (next == Symbol.Identifier)
{
return(new ObjectIdentifierType(module, name, symbols));
}
symbols.PutBack(next);
}
if (current == Symbol.Sequence)
{
Symbol next = symbols.NextNonEOLSymbol();
if (next == Symbol.Of)
{
return(new SequenceOf(module, name, symbols));
}
else
{
symbols.PutBack(next);
return(new Sequence(module, name, symbols));
}
}
if (current == Symbol.Choice)
{
return(new Choice(module, name, symbols));
}
return(new TypeAssignment(module, name, current, symbols, isMacroSyntax));
}
private void ParseEntities(ISymbolEnumerator symbols)
{
Symbol temp = symbols.NextNonEOLSymbol();
SymbolList buffer = new SymbolList();
while (temp != Symbol.End)
{
if (temp == Symbol.Assign)
{
ParseEntity(buffer, symbols);
buffer.Clear();
// skip linebreaks behind an entity
temp = symbols.NextNonEOLSymbol();
}
else
{
buffer.Add(temp);
temp = symbols.NextSymbol();
}
}
}
/// <summary>
/// Creates an <see cref="TypeAssignment" />.
/// </summary>
/// <param name="module">The module.</param>
/// <param name="name">The name.</param>
/// <param name="type">The type.</param>
/// <param name="symbols">The symbols.</param>
/// <param name="isMacroSyntax">if set to <c>true</c> indicates that the syntax clause of a macro is parsed (e.g. OBJECT-TYPE, TEXTUAL-CONVENTION).</param>
public TypeAssignment(IModule module, string name, Symbol type, ISymbolEnumerator symbols, bool isMacroSyntax)
{
_module = module;
_name = name;
SymbolList typeSymbols = new SymbolList();
typeSymbols.Add(type);
Symbol current = symbols.NextSymbol();
while (current != Symbol.EOL)
{
if (current == Symbol.OpenParentheses)
{
// parse range of unknown type
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
break;
}
else if (current == Symbol.OpenBracket)
{
symbols.PutBack(current);
_map = Lexer.DecodeEnumerations(symbols);
break;
}
typeSymbols.Add(current);
current = symbols.NextSymbol();
}
_type = typeSymbols.Join(" ");
if ((_ranges == null) && (_map == null))
{
current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenParentheses)
{
// parse range of unknown type
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
}
else if (current == Symbol.OpenBracket)
{
symbols.PutBack(current);
_map = Lexer.DecodeEnumerations(symbols);
}
else if (current != null)
{
symbols.PutBack(current);
}
}
if (isMacroSyntax)
{
// inside a macro the syntax is limited to one line, except there are brackets used for ranges/enums
return;
}
// outside macro Syntax clause we wait for two consecutive linebreaks with a following valid identifier as end condition
Symbol previous = current;
Symbol veryPrevious = null;
while ((current = symbols.NextSymbol()) != null)
{
if ((veryPrevious == Symbol.EOL) && (previous == Symbol.EOL) && current.IsValidIdentifier())
{
symbols.PutBack(current);
return;
}
veryPrevious = previous;
previous = current;
}
previous.Assert(false, "end of file reached");
}
public static ValueRanges DecodeRanges(ISymbolEnumerator symbols)
{
ValueRanges result = new ValueRanges();
Symbol startSymbol = symbols.NextNonEOLSymbol();
Symbol current = startSymbol;
current.Expect(Symbol.OpenParentheses);
while (current != Symbol.CloseParentheses)
{
Symbol value1Symbol = symbols.NextNonEOLSymbol();
if ((value1Symbol == Symbol.Size) && !result.IsSizeDeclaration)
{
result.IsSizeDeclaration = true;
symbols.NextNonEOLSymbol().Expect(Symbol.OpenParentheses);
continue;
}
// check for valid number
Int64? value1 = DecodeNumber(value1Symbol);
if (!value1.HasValue)
{
value1Symbol.Assert(false, "Invalid range declaration!");
}
// process next symbol
ValueRange range;
current = symbols.NextNonEOLSymbol();
if (current == Symbol.DoubleDot)
{
// its a continous range
Symbol value2Symbol = symbols.NextNonEOLSymbol();
Int64? value2 = DecodeNumber(value2Symbol);
value2Symbol.Assert(value2.HasValue && (value2.Value >= value1.Value), "Invalid range declaration!");
if (value2.Value == value1.Value)
{
range = new ValueRange(value1.Value, null);
}
else
{
range = new ValueRange(value1.Value, value2.Value);
}
current = symbols.NextNonEOLSymbol();
}
else
{
// its a single number
range = new ValueRange(value1.Value, null);
}
// validate range
if (result.IsSizeDeclaration)
{
value1Symbol.Assert(range.Start >= 0, "Invalid range declaration! Size must be greater than 0");
}
result.Add(range);
// check next symbol
current.Expect(Symbol.Pipe, Symbol.CloseParentheses);
}
if (result.IsSizeDeclaration)
{
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
}
// validate ranges in between
for (int i=0; i<result.Count; i++)
{
for (int k=i+1; k<result.Count; k++)
{
startSymbol.Assert(!result[i].IntersectsWith(result[k]), "Invalid range declaration! Overlapping of ranges!");
}
}
return result;
}
public static ITypeAssignment ParseBasicTypeDef(IModule module, string name, ISymbolEnumerator symbols, bool isMacroSyntax = false)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Bits)
{
return new BitsType(module, name, symbols);
}
if (IntegerType.IsIntegerType(current))
{
return new IntegerType(module, name, current, symbols);
}
if (UnsignedType.IsUnsignedType(current))
{
return new UnsignedType(module, name, current, symbols);
}
if (current == Symbol.Opaque)
{
return new OpaqueType(module, name, symbols);
}
if (current == Symbol.IpAddress)
{
return new IpAddressType(module, name, symbols);
}
if (current == Symbol.TextualConvention)
{
return new TextualConvention(module, name, symbols);
}
if (current == Symbol.Octet)
{
Symbol next = symbols.NextNonEOLSymbol();
if (next == Symbol.String)
{
return new OctetStringType(module, name, symbols);
}
symbols.PutBack(next);
}
if (current == Symbol.Object)
{
Symbol next = symbols.NextNonEOLSymbol();
if (next == Symbol.Identifier)
{
return new ObjectIdentifierType(module, name, symbols);
}
symbols.PutBack(next);
}
if (current == Symbol.Sequence)
{
Symbol next = symbols.NextNonEOLSymbol();
if (next == Symbol.Of)
{
return new SequenceOf(module, name, symbols);
}
else
{
symbols.PutBack(next);
return new Sequence(module, name, symbols);
}
}
if (current == Symbol.Choice)
{
return new Choice(module, name, symbols);
}
return new TypeAssignment(module, name, current, symbols, isMacroSyntax);
}
private static IList<string> ParseIndices(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Index)
{
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
List<string> indices = new List<string>();
while (current != Symbol.CloseBracket)
{
current = symbols.NextNonEOLSymbol();
bool lastIndex = false;
if (current == Symbol.Implied)
{
current = symbols.NextNonEOLSymbol();
lastIndex = true; // 'IMPLIED' may only be used for last index
}
current.Assert((current != Symbol.Comma) && (current != Symbol.CloseBracket), "Expected index name but found symbol!");
indices.Add(current.ToString());
current = symbols.NextNonEOLSymbol();
if (lastIndex)
{
current.Expect(Symbol.CloseBracket);
}
else
{
current.Expect(Symbol.Comma, Symbol.CloseBracket);
}
}
return indices;
}
else if (current != null)
{
symbols.PutBack(current);
}
return null;
}
public SequenceOf(IModule module, string name, ISymbolEnumerator sym)
: base(module, name)
{
_type = sym.NextNonEOLSymbol().ToString();
}
private void ParseEntity(SymbolList preAssignSymbols, ISymbolEnumerator symbols)
{
if ((preAssignSymbols == null) || (preAssignSymbols.Count == 0))
{
Symbol s = symbols.NextSymbol();
if (s != null)
{
s.Assert(false, "Invalid Entity declaration");
}
else
{
throw new MibException("Invalid Entity declaration");
}
}
// check for a valid identifier
preAssignSymbols[0].AssertIsValidIdentifier();
if (preAssignSymbols.Count == 1)
{
// its a typedef
_tokens.Add(Lexer.ParseBasicTypeDef(this, preAssignSymbols[0].ToString(), symbols, isMacroSyntax: false));
return;
}
ISymbolEnumerator preAssignSymbolsEnumerator = preAssignSymbols.GetSymbolEnumerator();
preAssignSymbolsEnumerator.NextNonEOLSymbol(); // returns identifier
Symbol type = preAssignSymbolsEnumerator.NextNonEOLSymbol();
// parse declarations
if (type == Symbol.Object)
{
Symbol next = preAssignSymbolsEnumerator.NextNonEOLSymbol();
if (next == Symbol.Identifier)
{
_tokens.Add(new OidValueAssignment(this, preAssignSymbols, symbols));
return;
}
else if (next != null)
{
preAssignSymbolsEnumerator.PutBack(next);
}
}
if (type == Symbol.ModuleIdentity)
{
_tokens.Add(new ModuleIdentity(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.ObjectType)
{
_tokens.Add(new ObjectType(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.ObjectGroup)
{
_tokens.Add(new ObjectGroup(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.NotificationGroup)
{
_tokens.Add(new NotificationGroup(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.ModuleCompliance)
{
_tokens.Add(new ModuleCompliance(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.NotificationType)
{
_tokens.Add(new NotificationType(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.ObjectIdentity)
{
_tokens.Add(new ObjectIdentity(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.Macro)
{
_tokens.Add(new Macro(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.TrapType)
{
_tokens.Add(new TrapType(this, preAssignSymbols, symbols));
return;
}
if (type == Symbol.AgentCapabilities)
{
_tokens.Add(new AgentCapabilities(this, preAssignSymbols, symbols));
return;
}
preAssignSymbols[1].Assert(false, "Unknown/Invalid declaration");
}
private static string ParseDescription(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Description)
{
return symbols.NextNonEOLSymbol().ToString().Trim(new char[] { '"' });
}
else if (current != null)
{
symbols.PutBack(current);
}
return null;
}
private static MaxAccess ParseAccess(ISymbolEnumerator symbols)
{
MaxAccess access = MaxAccess.notAccessible;
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.MaxAccess, Symbol.Access);
current = symbols.NextNonEOLSymbol();
switch (current.ToString())
{
case "not-accessible":
access = MaxAccess.notAccessible;
break;
case "accessible-for-notify":
access = MaxAccess.accessibleForNotify;
break;
case "read-only":
access = MaxAccess.readOnly;
break;
case "read-write":
access = MaxAccess.readWrite;
break;
case "read-create":
access = MaxAccess.readCreate;
break;
case "write-only":
access = MaxAccess.readWrite;
break;
default:
current.Assert(false, "Invalid/Unknown access");
break;
}
return access;
}
private static string ParseUnits(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
if (current == Symbol.Units)
{
return symbols.NextNonEOLSymbol().ToString();
}
else if (current != null)
{
symbols.PutBack(current);
}
return null;
}
private static ITypeAssignment ParseSyntax(IModule module, ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.Syntax);
return Lexer.ParseBasicTypeDef(module, String.Empty, symbols, isMacroSyntax: true);
}
public static void ParseOidValue(ISymbolEnumerator symbols, out string parent, out uint value)
{
parent = null;
value = 0;
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
Symbol previous = null;
StringBuilder longParent = new StringBuilder();
current = symbols.NextNonEOLSymbol();
longParent.Append(current);
while ((current = symbols.NextNonEOLSymbol()) != null)
{
bool succeeded;
if (current == Symbol.OpenParentheses)
{
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
succeeded = UInt32.TryParse(current.ToString(), out value);
current.Assert(succeeded, "not a decimal");
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
longParent.Append(current);
continue;
}
if (current == Symbol.CloseBracket)
{
parent = longParent.ToString();
return;
}
succeeded = UInt32.TryParse(current.ToString(), out value);
if (succeeded)
{
// numerical way
while ((current = symbols.NextNonEOLSymbol()) != Symbol.CloseBracket)
{
longParent.Append(".").Append(value);
succeeded = UInt32.TryParse(current.ToString(), out value);
current.Assert(succeeded, "not a decimal");
}
current.Expect(Symbol.CloseBracket);
parent = longParent.ToString();
return;
}
longParent.Append(".");
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenParentheses);
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
succeeded = UInt32.TryParse(current.ToString(), out value);
current.Assert(succeeded, "not a decimal");
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
longParent.Append(current);
previous = current;
}
throw MibException.Create("end of file reached", previous);
}
public static void ParseOidValue(ISymbolEnumerator symbols, out string parent, out uint value)
{
parent = null;
value = 0;
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
Symbol previous = null;
StringBuilder longParent = new StringBuilder();
current = symbols.NextNonEOLSymbol();
longParent.Append(current);
while ((current = symbols.NextNonEOLSymbol()) != null)
{
bool succeeded;
if (current == Symbol.OpenParentheses)
{
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
succeeded = UInt32.TryParse(current.ToString(), out value);
current.Assert(succeeded, "not a decimal");
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
longParent.Append(current);
continue;
}
if (current == Symbol.CloseBracket)
{
parent = longParent.ToString();
return;
}
succeeded = UInt32.TryParse(current.ToString(), out value);
if (succeeded)
{
// numerical way
while ((current = symbols.NextNonEOLSymbol()) != Symbol.CloseBracket)
{
longParent.Append(".").Append(value);
succeeded = UInt32.TryParse(current.ToString(), out value);
current.Assert(succeeded, "not a decimal");
}
current.Expect(Symbol.CloseBracket);
parent = longParent.ToString();
return;
}
longParent.Append(".");
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenParentheses);
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
succeeded = UInt32.TryParse(current.ToString(), out value);
current.Assert(succeeded, "not a decimal");
longParent.Append(current);
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
longParent.Append(current);
previous = current;
}
throw MibException.Create("end of file reached", previous);
}
public static ValueMap DecodeEnumerations(ISymbolEnumerator symbols)
{
Symbol current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenBracket);
ValueMap map = new ValueMap();
do
{
current = symbols.NextNonEOLSymbol();
string identifier = current.ToString();
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.OpenParentheses);
current = symbols.NextNonEOLSymbol();
Int64 enumValue;
if (Int64.TryParse(current.ToString(), out enumValue))
{
try
{
// Have to include the number as it seems repeated identifiers are allowed ??
map.Add(enumValue, String.Format("{0}({1})", identifier, enumValue));
}
catch (ArgumentException ex)
{
current.Assert(false, ex.Message);
}
}
else
{
// Need to get "DefinedValue".
}
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
current = symbols.NextNonEOLSymbol();
} while (current == Symbol.Comma);
current.Expect(Symbol.CloseBracket);
return map;
}
public static ValueRanges DecodeRanges(ISymbolEnumerator symbols)
{
ValueRanges result = new ValueRanges();
Symbol startSymbol = symbols.NextNonEOLSymbol();
Symbol current = startSymbol;
current.Expect(Symbol.OpenParentheses);
while (current != Symbol.CloseParentheses)
{
Symbol value1Symbol = symbols.NextNonEOLSymbol();
if ((value1Symbol == Symbol.Size) && !result.IsSizeDeclaration)
{
result.IsSizeDeclaration = true;
symbols.NextNonEOLSymbol().Expect(Symbol.OpenParentheses);
continue;
}
// check for valid number
Int64?value1 = DecodeNumber(value1Symbol);
if (!value1.HasValue)
{
value1Symbol.Assert(false, "Invalid range declaration!");
}
// process next symbol
ValueRange range;
current = symbols.NextNonEOLSymbol();
if (current == Symbol.DoubleDot)
{
// its a continous range
Symbol value2Symbol = symbols.NextNonEOLSymbol();
Int64? value2 = DecodeNumber(value2Symbol);
value2Symbol.Assert(value2.HasValue && (value2.Value >= value1.Value), "Invalid range declaration!");
if (value2.Value == value1.Value)
{
range = new ValueRange(value1.Value, null);
}
else
{
range = new ValueRange(value1.Value, value2.Value);
}
current = symbols.NextNonEOLSymbol();
}
else
{
// its a single number
range = new ValueRange(value1.Value, null);
}
// validate range
if (result.IsSizeDeclaration)
{
value1Symbol.Assert(range.Start >= 0, "Invalid range declaration! Size must be greater than 0");
}
result.Add(range);
// check next symbol
current.Expect(Symbol.Pipe, Symbol.CloseParentheses);
}
if (result.IsSizeDeclaration)
{
current = symbols.NextNonEOLSymbol();
current.Expect(Symbol.CloseParentheses);
}
// validate ranges in between
for (int i = 0; i < result.Count; i++)
{
for (int k = i + 1; k < result.Count; k++)
{
startSymbol.Assert(!result[i].IntersectsWith(result[k]), "Invalid range declaration! Overlapping of ranges!");
}
}
return(result);
}
/// <summary>
/// Creates an <see cref="TypeAssignment" />.
/// </summary>
/// <param name="module">The module.</param>
/// <param name="name">The name.</param>
/// <param name="type">The type.</param>
/// <param name="symbols">The symbols.</param>
/// <param name="isMacroSyntax">if set to <c>true</c> indicates that the syntax clause of a macro is parsed (e.g. OBJECT-TYPE, TEXTUAL-CONVENTION).</param>
public TypeAssignment(IModule module, string name, Symbol type, ISymbolEnumerator symbols, bool isMacroSyntax)
{
_module = module;
_name = name;
SymbolList typeSymbols = new SymbolList();
typeSymbols.Add(type);
Symbol current = symbols.NextSymbol();
while (current != Symbol.EOL)
{
if (current == Symbol.OpenParentheses)
{
// parse range of unknown type
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
break;
}
else if (current == Symbol.OpenBracket)
{
symbols.PutBack(current);
_map = Lexer.DecodeEnumerations(symbols);
break;
}
typeSymbols.Add(current);
current = symbols.NextSymbol();
}
_type = typeSymbols.Join(" ");
if ((_ranges == null) && (_map == null))
{
current = symbols.NextNonEOLSymbol();
if (current == Symbol.OpenParentheses)
{
// parse range of unknown type
symbols.PutBack(current);
_ranges = Lexer.DecodeRanges(symbols);
}
else if (current == Symbol.OpenBracket)
{
symbols.PutBack(current);
_map = Lexer.DecodeEnumerations(symbols);
}
else if (current != null)
{
symbols.PutBack(current);
}
}
if (isMacroSyntax)
{
// inside a macro the syntax is limited to one line, except there are brackets used for ranges/enums
return;
}
// outside macro Syntax clause we wait for two consecutive linebreaks with a following valid identifier as end condition
Symbol previous = current;
Symbol veryPrevious = null;
while ((current = symbols.NextSymbol()) != null)
{
if ((veryPrevious == Symbol.EOL) && (previous == Symbol.EOL) && current.IsValidIdentifier())
{
symbols.PutBack(current);
return;
}
veryPrevious = previous;
previous = current;
}
previous.Assert(false, "end of file reached");
}
public SequenceOf(IModule module, string name, ISymbolEnumerator sym)
: base(module, name)
{
_type = sym.NextNonEOLSymbol().ToString();
}