private MultiDictionary <string, IConceptParser> CreateGenericParsers()
{
var stopwatch = Stopwatch.StartNew();
var conceptMetadata = _conceptInfoPlugins
.Select(conceptInfo => conceptInfo.GetType())
.Distinct()
.Select(conceptInfoType => new
{
conceptType = conceptInfoType,
conceptKeyword = ConceptInfoHelper.GetKeyword(conceptInfoType)
})
.Where(cm => cm.conceptKeyword != null)
.ToList();
_keywordsLogger.Trace(() => string.Join(" ", conceptMetadata.Select(cm => cm.conceptKeyword).OrderBy(keyword => keyword).Distinct()));
var result = conceptMetadata.ToMultiDictionary(x => x.conceptKeyword, x =>
{
var parser = new GenericParser(x.conceptType, x.conceptKeyword);
parser.OnMemberRead += _onMemberRead;
return((IConceptParser)parser);
}, StringComparer.OrdinalIgnoreCase);
_performanceLogger.Write(stopwatch, "CreateGenericParsers.");
return(result);
}
private static (int Level, bool ConcreteParent) GetNestingDepth(ConceptType conceptType)
{
int level = 0;
bool parentIsConcreteConceptType = true;
var processed = new HashSet <ConceptType>();
while (true)
{
var parentProperty = GenericParser.GetParentProperty(conceptType.Members);
if (parentProperty == null)
{
break;
}
level += 1;
if (parentProperty.ConceptType == null) // For example, IConceptInfo.
{
parentIsConcreteConceptType = false;
break;
}
processed.Add(conceptType);
if (processed.Contains(parentProperty.ConceptType))
{
break; // Avoid infinite loop when analyzing recursive concepts.
}
conceptType = parentProperty.ConceptType;
}
return(level, parentIsConcreteConceptType);
}
public MultiDictionary <string, IConceptParser> CreateGenericParsers(List <ConceptType> conceptTypes)
{
var stopwatch = Stopwatch.StartNew();
var parsableConcepts = conceptTypes
.Where(c => c.Keyword != null)
.ToList();
var parsers = parsableConcepts.ToMultiDictionary(
concept => concept.Keyword,
concept =>
{
var parser = new GenericParser(concept);
parser.OnMemberRead += OnMemberRead;
return((IConceptParser)parser);
},
StringComparer.OrdinalIgnoreCase);
_performanceLogger.Write(stopwatch, "CreateGenericParsers.");
_keywordsLogger.Trace(() => string.Join(" ", parsers.Select(p => p.Key).OrderBy(keyword => keyword)));
return(parsers);
}
public ValueOrError<object> ReadMemberValue(ConceptMember member, ITokenReader tokenReader, IConceptInfo lastConcept,
bool firstMember, ref bool lastPropertyWasInlineParent, ref bool lastConceptUsed, bool readingAReference)
{
try
{
if (lastPropertyWasInlineParent && member.IsKey && !member.IsConceptInfo) // TODO: Removing "IsConceptInfo" from this condition would produce a mismatch. Think of a better solution for parsing the concept key.
{
if (!tokenReader.TryRead("."))
return ValueOrError<object>.CreateError(string.Format(
"Parent property and the following key value ({0}) must be separated with a dot. Expected \".\"",
member.Name));
}
lastPropertyWasInlineParent = false;
if (member.IsStringType)
return tokenReader.ReadText();
if (member.ValueType == typeof(IConceptInfo))
if (firstMember && lastConcept != null)
{
lastConceptUsed = true;
return (object)lastConcept;
}
else
return ValueOrError<object>.CreateError("Member of type IConceptInfo can only be used as a first member and enclosed within the referenced parent concept.");
if (member.IsConceptInfo && lastConcept != null && member.ValueType.IsInstanceOfType(lastConcept)
&& member.ValueType.IsAssignableFrom(ConceptInfoType)) // Recursive "parent" property
{
lastConceptUsed = true;
return (object)lastConcept;
}
if (member.IsConceptInfo && lastConcept != null && member.ValueType.IsInstanceOfType(lastConcept)
&& firstMember)
{
lastConceptUsed = true;
return (object)lastConcept;
}
if (member.IsConceptInfo && firstMember)
{
if (member.ValueType == ConceptInfoType)
return ValueOrError.CreateError(string.Format(
"Recursive concept {0} cannot be used as a root because its parent property ({1}) must reference another concept. Use a non-recursive concept for the root and a derivation of the root concept with additional parent property as a recursive concept.",
ConceptInfoHelper.GetKeywordOrTypeName(ConceptInfoType), member.Name));
if (!readingAReference && Members.Where(m => m.IsParsable).Count() == 1)
{
// This validation is not necessary for consistent parsing. It is enforced simply to avoid ambiguity when parsing
// similar concepts such as "Logging { AllProperties; }", "History { AllProperties; }" and "Persisted { AllProperties; }".
var parentMembers = ConceptMembers.Get(member.ValueType).Where(m => m.IsParsable).ToArray();
if (parentMembers.Count() == 1 && parentMembers.Single().IsConceptInfo)
return ValueOrError.CreateError(string.Format(
"{0} must be enclosed within the referenced parent concept {1}. A single-reference concept that references another single-reference concept must always be used with embedded syntax to avoid ambiguity.",
ConceptInfoHelper.GetKeywordOrTypeName(ConceptInfoType),
ConceptInfoHelper.GetKeywordOrTypeName(member.ValueType)));
}
GenericParser subParser = new GenericParser(member.ValueType, "");
lastConceptUsed = true;
lastPropertyWasInlineParent = true;
return subParser.ParseMembers(tokenReader, lastConcept, true).ChangeType<object>();
}
if (member.IsConceptInfo)
{
GenericParser subParser = new GenericParser(member.ValueType, "");
return subParser.ParseMembers(tokenReader, null, true).ChangeType<object>();
}
return ValueOrError.CreateError(string.Format(
"GenericParser does not support members of type \"{0}\". Try using string or implementation of IConceptInfo.",
member.ValueType.Name));
}
catch (DslSyntaxException ex)
{
return ValueOrError<object>.CreateError(ex.Message);
}
}
private ValueOrError <object> ReadMemberValue(ConceptMemberSyntax member, ITokenReader tokenReader, ConceptSyntaxNode useLastConcept,
bool firstMember, ref bool parsedFirstReferenceElement, bool readingAReference)
{
try
{
if (member.IsStringType)
{
if (useLastConcept != null)
{
return(ValueOrError <object> .CreateError($"This concept cannot be nested within {useLastConcept.Concept.TypeName}. Trying to read {_conceptType.TypeName}."));
}
if (readingAReference && parsedFirstReferenceElement)
{
if (!tokenReader.TryRead("."))
{
return(ValueOrError <object> .CreateError(string.Format(
"Parent property and the following key value ({0}) must be separated with a dot. Expected \".\"",
member.Name)));
}
}
parsedFirstReferenceElement = true;
// Legacy syntax:
if (!readingAReference && member.IsKey && member.IsStringType && !firstMember)
{
if (tokenReader.TryRead("."))
{
AddWarning($"Obsolete syntax: Remove '.' from {_conceptType.Keyword} statement. {((TokenReader)tokenReader).ReportPosition()}.");
}
}
return(tokenReader.ReadText().ChangeType <object>());
}
if (member.IsConceptInfoInterface)
{
if (useLastConcept != null)
{
return((object)useLastConcept);
}
else
{
return(ValueOrError <object> .CreateError($"Member of type IConceptInfo can only be nested within" +
$" the referenced parent concept. It must be a first member or marked with {nameof(ConceptParentAttribute)}."));
}
}
// If the 'member' is not IsStringType (see above) and not IsConceptInfoInterface (see above), then it is a concrete IConceptInfo implementation type, and member.ConceptType should not be null.
if (member.ConceptType == null)
{
throw new InvalidOperationException($"If the member type is not string or interface, it should have a ConceptType value. Member '{member.Name}' while reading {_conceptType.TypeName}.");
}
if (useLastConcept != null && member.ConceptType.IsInstanceOfType(useLastConcept))
{
return((object)useLastConcept);
}
if (member.IsConceptInfo && firstMember && !readingAReference && _conceptType.Members.Count(m => m.IsParsable) == 1)
{
// This validation is not necessary for consistent parsing. It is enforced simply to avoid ambiguity for future concept overloads
// when parsing similar concepts such as "Logging { AllProperties; }", "History { AllProperties; }" and "Persisted { AllProperties; }".
var parentMembers = member.ConceptType.Members.Where(m => m.IsParsable).ToArray();
if (parentMembers.Length == 1 && parentMembers.Single().IsConceptInfo)
{
return(ValueOrError.CreateError($"{_conceptType.GetKeywordOrTypeName()} must be nested" +
$" within the referenced parent concept {member.ConceptType.GetKeywordOrTypeName()}." +
$" A single-reference concept that references another single-reference concept must always be used with nested syntax to avoid ambiguity."));
}
}
if (member.IsConceptInfo)
{
if (firstMember && member.ConceptType == _conceptType)
{
return(ValueOrError.CreateError(string.Format(
"Recursive concept '{0}' cannot be used as a root because its parent property ({1}) must reference another concept." +
" Use a non-recursive concept for the root and a derivation of the root concept with additional parent property as a recursive concept.",
_conceptType.TypeName, member.Name)));
}
var subParser = new GenericParser(member.ConceptType);
return(subParser.ParseMembers(tokenReader, useLastConcept, true, ref parsedFirstReferenceElement).ChangeType <object>());
}
return(ValueOrError.CreateError(string.Format(
"GenericParser does not support members of type \"{0}\". Try using string or implementation of IConceptInfo.",
member.ConceptType.TypeName)));
}
catch (DslSyntaxException ex)
{
return(ValueOrError <object> .CreateError(ex.Message));
}
}
public ValueOrError <object> ReadMemberValue(ConceptMember member, ITokenReader tokenReader, IConceptInfo lastConcept,
bool firstMember, ref bool lastPropertyWasInlineParent, ref bool lastConceptUsed, bool readingAReference)
{
try
{
if (lastPropertyWasInlineParent && member.IsKey && !member.IsConceptInfo) // TODO: Removing "IsConceptInfo" from this condition would produce a mismatch. Think of a better solution for parsing the concept key.
{
if (!tokenReader.TryRead("."))
{
return(ValueOrError <object> .CreateError(string.Format(
"Parent property and the following key value ({0}) must be separated with a dot. Expected \".\"",
member.Name)));
}
}
lastPropertyWasInlineParent = false;
if (member.IsStringType)
{
return(tokenReader.ReadText().ChangeType <object>());
}
if (member.ValueType == typeof(IConceptInfo))
{
if (firstMember && lastConcept != null)
{
lastConceptUsed = true;
return((object)lastConcept);
}
else
{
return(ValueOrError <object> .CreateError("Member of type IConceptInfo can only be used as a first member and enclosed within the referenced parent concept."));
}
}
if (member.IsConceptInfo && lastConcept != null && member.ValueType.IsInstanceOfType(lastConcept) &&
member.ValueType.IsAssignableFrom(ConceptInfoType)) // Recursive "parent" property
{
lastConceptUsed = true;
return((object)lastConcept);
}
if (member.IsConceptInfo && lastConcept != null && member.ValueType.IsInstanceOfType(lastConcept) &&
firstMember)
{
lastConceptUsed = true;
return((object)lastConcept);
}
if (member.IsConceptInfo && firstMember)
{
if (member.ValueType == ConceptInfoType)
{
return(ValueOrError.CreateError(string.Format(
"Recursive concept {0} cannot be used as a root because its parent property ({1}) must reference another concept. Use a non-recursive concept for the root and a derivation of the root concept with additional parent property as a recursive concept.",
ConceptInfoHelper.GetKeywordOrTypeName(ConceptInfoType), member.Name)));
}
if (!readingAReference && Members.Where(m => m.IsParsable).Count() == 1)
{
// This validation is not necessary for consistent parsing. It is enforced simply to avoid ambiguity when parsing
// similar concepts such as "Logging { AllProperties; }", "History { AllProperties; }" and "Persisted { AllProperties; }".
var parentMembers = ConceptMembers.Get(member.ValueType).Where(m => m.IsParsable).ToArray();
if (parentMembers.Count() == 1 && parentMembers.Single().IsConceptInfo)
{
return(ValueOrError.CreateError(string.Format(
"{0} must be enclosed within the referenced parent concept {1}. A single-reference concept that references another single-reference concept must always be used with embedded syntax to avoid ambiguity.",
ConceptInfoHelper.GetKeywordOrTypeName(ConceptInfoType),
ConceptInfoHelper.GetKeywordOrTypeName(member.ValueType))));
}
}
GenericParser subParser = new GenericParser(member.ValueType, "");
lastConceptUsed = true;
lastPropertyWasInlineParent = true;
return(subParser.ParseMembers(tokenReader, lastConcept, true).ChangeType <object>());
}
if (member.IsConceptInfo)
{
GenericParser subParser = new GenericParser(member.ValueType, "");
return(subParser.ParseMembers(tokenReader, null, true).ChangeType <object>());
}
return(ValueOrError.CreateError(string.Format(
"GenericParser does not support members of type \"{0}\". Try using string or implementation of IConceptInfo.",
member.ValueType.Name)));
}
catch (DslSyntaxException ex)
{
return(ValueOrError <object> .CreateError(ex.Message));
}
}