private static SemanticInfo RegisterModelType(Type modelType)
{
using (new Tracer(modelType))
{
SemanticInfo semanticInfo = ExtractSemanticInfo(modelType);
_modelTypeToSemanticInfoMapping.Add(modelType, semanticInfo);
foreach (string semanticTypeName in semanticInfo.MappedSemanticTypes)
{
ISet <Type> mappedModelTypes;
if (!_semanticTypeToModelTypesMapping.TryGetValue(semanticTypeName, out mappedModelTypes))
{
mappedModelTypes = new HashSet <Type>();
_semanticTypeToModelTypesMapping.Add(semanticTypeName, mappedModelTypes);
}
mappedModelTypes.Add(modelType);
}
if (semanticInfo.PublicSemanticTypes.Any())
{
Log.Debug("Model type '{0}' has semantic type(s) '{1}'.", modelType.FullName, string.Join(" ", semanticInfo.PublicSemanticTypes));
foreach (KeyValuePair <string, IList <string> > kvp in semanticInfo.SemanticProperties)
{
Log.Debug("\tRegistered property '{0}' as semantic property '{1}'", kvp.Key, string.Join(" ", kvp.Value));
}
}
return(semanticInfo);
}
}
public ExpressionNode(IToken token)
: base(token)
{
///instanciamos el NodeInfo
NodeInfo = new SemanticInfo();
LoadVariableInTheStack = true;
}
public override void CheckSignatureSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
SemanticInfo typeInfo;
///el tipo no puede estar definido
if (symbolTable.GetDefinedTypeShallow(TypeId, out typeInfo))
{
errors.Add(new CompileError
{
Line = this.Line,
Column = this.CharPositionInLine,
ErrorMessage = string.Format("Current context already contains a definition for '{0}'", TypeId),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
typeInfo = new SemanticInfo
{
Name = TypeId,
ElementKind = SymbolKind.Type,
//Type = null,
IsPending = true
};
typeInfo.Type = !(this is AliasDeclarationNode) ? typeInfo : null;
///insertamos el tipo en la tabla de símbolos como pendiente
symbolTable.InsertSymbol(typeInfo);
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///check semantics al VarDeclarationNode
base.CheckSemantic(symbolTable, errors);
///check semantics al InitExpression
InitExpression.CheckSemantic(symbolTable, errors);
///si InitExpression evalúa de error este también
if (Object.Equals(InitExpression.NodeInfo, SemanticInfo.SemanticError))
{
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
///si InitExpression tiene tipo 'nil'
if (InitExpression.NodeInfo.BuiltInType == BuiltInType.Nil)
{
errors.Add(new CompileError
{
Line = InitExpression.Line,
Column = InitExpression.CharPositionInLine,
ErrorMessage = "Cannot assign nil to an implicitly-typed local variable",
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///si no hubo error seteamos los campos necesarios
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo.Type = SemanticInfo.Void;
NodeInfo.BuiltInType = BuiltInType.Void;
}
SemanticInfo variable = new SemanticInfo
{
Name = VariableName,
ElementKind = SymbolKind.Variable,
BuiltInType = InitExpression.NodeInfo.BuiltInType,
ElementsType = InitExpression.NodeInfo.ElementsType,
Fields = InitExpression.NodeInfo.Fields,
Type = InitExpression.NodeInfo.Type.Type,
ILType = InitExpression.NodeInfo.ILType
};
///seteamos el ILType del NodeInfo
NodeInfo.ILType = InitExpression.NodeInfo.ILType;
inferredParche = InitExpression.NodeInfo.Type;
///agregamos la variable a la tabla de símbolos
symbolTable.InsertSymbol(variable);
}
/// <summary>
/// Gets the semantic types (and prefix mappings) for a given Model Type.
/// </summary>
/// <param name="modelType">The Model Type.</param>
/// <param name="prefixMappings">The prefix mappings for the prefixes used by the types.</param>
/// <returns>The semantic types.</returns>
public static string[] GetSemanticTypes(Type modelType, out IDictionary <string, string> prefixMappings)
{
// No Tracer here to reduce trace noise.
SemanticInfo semanticInfo = GetSemanticInfo(modelType);
prefixMappings = semanticInfo.PrefixMappings;
return(semanticInfo.PublicSemanticTypes.ToArray());
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///un type no puede ser alias de si mismo
if (AliasId.Equals(OriginalId))
{
errors.Add(new CompileError
{
Line = this.Line,
Column = this.CharPositionInLine,
ErrorMessage = "Defining a self recursive 'alias' type is not allowed",
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
SemanticInfo typeInfo;
///el tipo del que se es alias debe existir
if (!symbolTable.GetDefinedTypeDeep(OriginalId, out typeInfo))
{
errors.Add(new CompileError
{
Line = GetChild(1).Line,
Column = GetChild(1).CharPositionInLine,
ErrorMessage = string.Format("Type '{0}' could not be found in current context", OriginalId),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///si no ha evaluado de error le seteamos los valores
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo.Type = SemanticInfo.Void;
NodeInfo.BuiltInType = BuiltInType.Void;
}
SemanticInfo alias;
symbolTable.GetDefinedTypeDeep(AliasId, out alias);
alias.BuiltInType = typeInfo.BuiltInType;
alias.ElementsType = typeInfo.ElementsType;
alias.Fields = typeInfo.Fields;
alias.Type = typeInfo.Type;
alias.ILType = typeInfo.ILType;
alias.IsPending = false;
//change
NodeInfo = SemanticInfo.Void; //me parece que el nodeinfo del aliasDeclaration tiene que ser void
aliasParche = typeInfo;
}
private string pop(out int val)
{
val = 0;
if (mSemanticStack.Count == 0)
{
return("null_stack_!!!");
}
SemanticInfo info = mSemanticStack.Pop();
val = info.value;
return(info.token);
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///check semantics al CallableDeclarationNode
base.CheckSemantic(symbolTable, errors);
///si BodyExpression no evaluó de error
if (!Object.Equals(CallableBody.NodeInfo, SemanticInfo.SemanticError))
{
///el procedimiento debe retornar void
if (!CallableBody.NodeInfo.BuiltInType.IsCompatibleWith(BuiltInType.Void))
{
errors.Add(new CompileError
{
Line = CallableBody.Line,
Column = CallableBody.CharPositionInLine,
ErrorMessage = string.Format("Cannot implicitly convert type '{0}' to 'void'", CallableBody.NodeInfo.Type.Name),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
///si no ha evaluado de error le seteamos los valores
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo = new SemanticInfo
{
Name = SemanticInfo.NoName,
ElementKind = SymbolKind.NoSymbol,
Type = SemanticInfo.Void,
BuiltInType = BuiltInType.Void,
ILType = null
};
SemanticInfo arg;
///guardamos los ILType
for (int i = 0; i < Parameters.Count; i++)
{
symbolTable.GetDefinedTypeDeep(Parameters[i].Value, out arg);
ILTypes.Add(arg.Type.ILType);
}
}
SemanticInfo procedure;
///completamos la definición del procedimiento
symbolTable.GetDefinedCallableDeep(CallableId, out procedure);
procedure.IsPending = false;
}
/// <summary>
/// Gets the semantic property names for a given Model Type and property name.
/// </summary>
/// <param name="modelType">The Model Type.</param>
/// <param name="propertyName">The property name.</param>
/// <returns>The semantic property names or <c>null</c> if no semantic property names have been registered for the given property.</returns>
public static string[] GetSemanticPropertyNames(Type modelType, string propertyName)
{
// No Tracer here to reduce trace noise.
SemanticInfo semanticInfo = GetSemanticInfo(modelType);
IList <string> semanticPropertyNames;
if (semanticInfo.SemanticProperties.TryGetValue(propertyName, out semanticPropertyNames))
{
return(semanticPropertyNames.ToArray());
}
return(null);
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
SemanticInfo variableInfo;
///chequeamos que no haya una variable con el mismo nombre
if (symbolTable.GetDefinedVariableShallow(CallableId, out variableInfo))
{
errors.Add(new CompileError
{
Line = GetChild(ChildCount - 2).Line,
Column = GetChild(ChildCount - 2).CharPositionInLine,
ErrorMessage = string.Format("There is already a definition for '{0}' in current context", CallableId),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///creamos el scope de la función o procedimiento
symbolTable.InitNewScope();
SemanticInfo param;
///agregamos los parámetros de la función o procedimiento al scope
for (int i = 0; i < Parameters.Count; i++)
{
param = new SemanticInfo
{
Name = Parameters[i].Key,
ElementKind = SymbolKind.Variable,
BuiltInType = parametersType[i].BuiltInType,
Type = parametersType[i],
ElementsType = parametersType[i].ElementsType,
Fields = parametersType[i].Fields
};
symbolTable.InsertSymbol(param);
}
///check semantics al CallableBody
CallableBody.CheckSemantic(symbolTable, errors);
///destruimos el scope de la función o procedimiento
symbolTable.CloseCurrentScope();
}
private static SemanticInfo RegisterModelType(Type modelType)
{
using (new Tracer(modelType))
{
SemanticInfo semanticInfo = ExtractSemanticInfo(modelType);
_modelTypeToSemanticInfoMapping.Add(modelType, semanticInfo);
foreach (string semanticTypeName in semanticInfo.MappedSemanticTypes)
{
ISet <Type> mappedModelTypes;
if (!_semanticTypeToModelTypesMapping.TryGetValue(semanticTypeName, out mappedModelTypes))
{
mappedModelTypes = new HashSet <Type>();
_semanticTypeToModelTypesMapping.Add(semanticTypeName, mappedModelTypes);
}
mappedModelTypes.Add(modelType);
int entityNameSeparatorPos = semanticTypeName.LastIndexOf(':');
string vocabularyId = semanticTypeName.Substring(0, entityNameSeparatorPos);
string entityName = semanticTypeName.Substring(entityNameSeparatorPos + 1);
IList <Tuple <string, Type> > entityNameModelTypeTuples;
if (!_vocabularyToModelTypesMapping.TryGetValue(vocabularyId, out entityNameModelTypeTuples))
{
entityNameModelTypeTuples = new List <Tuple <string, Type> >();
_vocabularyToModelTypesMapping.Add(vocabularyId, entityNameModelTypeTuples);
}
entityNameModelTypeTuples.Add(new Tuple <string, Type>(entityName, modelType));
}
if (Log.IsDebugEnabled)
{
if (semanticInfo.PublicSemanticTypes.Any())
{
Log.Debug("Model type '{0}' has semantic type(s) '{1}'.", modelType.FullName, String.Join(" ", semanticInfo.PublicSemanticTypes));
foreach (KeyValuePair <string, IList <string> > kvp in semanticInfo.SemanticProperties)
{
Log.Debug("\tRegistered property '{0}' as semantic property '{1}'", kvp.Key, String.Join(" ", kvp.Value));
}
}
}
return(semanticInfo);
}
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///seteamos los campos necesarios
NodeInfo = new SemanticInfo
{
BuiltInType = BuiltInType.Void,
Type = SemanticInfo.Void
};
ExpressionNode currentExpression = null;
//check semantics a cada una de las expresiones
for (int i = 0; i < ExpressionCount; i++)
{
currentExpression = ExpressionAt(i);
///check semantics a la currentExpression
currentExpression.CheckSemantic(symbolTable, errors);
///si alguna de las expresiones evalúa de error este también
if (Object.Equals(currentExpression.NodeInfo, SemanticInfo.SemanticError))
{
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
///si este no ha evaluado de error
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
///si hay mas de una expresión y ninguna tiene break
if (ExpressionCount > 0 && !AnyExpressionContainsBreak)
{
//NodeInfo.BuiltInType = currentExpression.NodeInfo.BuiltInType;
//NodeInfo.Type = currentExpression.NodeInfo.Type;
//NodeInfo.ElementsType = currentExpression.NodeInfo.ElementsType;
//NodeInfo.Fields = currentExpression.NodeInfo.Fields;
//NodeInfo.ILType = currentExpression.NodeInfo.ILType;
NodeInfo = currentExpression.NodeInfo;
}
}
}
// <statblock> ::= { <statementstar> } | <statement> | e
protected bool NTF_StatBlock(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.OpenBrace, "if", "for", "cin", "cout", "return", Lexer.Token.TokenType.Identifier,
"else", "fi", Lexer.Token.TokenType.Semicolon);
if (lookahead.Type == Lexer.Token.TokenType.OpenBrace)
{
error |= !Match(p, Lexer.Token.TokenType.OpenBrace);
error |= !NTF_StatementStar(p, si);
error |= !Match(p, Lexer.Token.TokenType.CloseBrace);
if (!error && p == 1)
Log(LogType.Parse, "<statblock> ::= { <statementstar> }");
}
// first(<statementstar>)
else if (lookahead.Value == "if" || lookahead.Value == "for" || lookahead.Value == "cin" || lookahead.Value == "cout"
|| lookahead.Value == "return" || lookahead.Type == Lexer.Token.TokenType.Identifier)
{
error |= !NTF_Statement(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<statblock> ::= <statement>");
}
// follow(<statblock>)=else+fi+;
else if (lookahead.Value == "else" || lookahead.Value == "fi" || lookahead.Type == Lexer.Token.TokenType.Semicolon)
{
if (p == 1)
Log(LogType.Parse, "<statblock> ::= e");
}
else
error = true;
return !error;
}
private void _createFromOldFormat(XElement elementXML)
{
Debug.Assert(elementXML.Attribute(Consts.AttWordId) != null);
Id = elementXML.Attribute(Consts.AttWordId).Value;
// TODO: определить ElementType
// ChildTreeInit
// вершиной дерева всегда будет ID слова
ChildWordsIds.AddChild(Id);
// Order
var orderNodeName = XName.Get(Consts.NodeWordOrder);
Debug.Assert(elementXML.Element(orderNodeName) != null);
Order = int.Parse(elementXML.Element(orderNodeName).Value);
// Position - only in LWS
var positionNodeName = XName.Get(Consts.NodeWordPosition);
if (elementXML.Element(positionNodeName) != null)
Position = int.Parse(elementXML.Element(Consts.NodeWordPosition).Value);
else
Position = -1;
// Text
var textNodeName = XName.Get(Consts.NodeWordText);
if (elementXML.Element(textNodeName) != null)
Text = elementXML.Element(textNodeName).Value;
else
Text = "";
// Syntactic Role
var syntacticRoleNodeName = XName.Get(Consts.NodeSyntacticRole);
if (elementXML.Element(syntacticRoleNodeName) != null)
SyntacticRole = SyntacticRole.ReadFromString(elementXML.Element(syntacticRoleNodeName).Value);
else
SyntacticRole = SyntacticRole.Undefined;
// Surface slot
if (elementXML.Element(Consts.NodeSurfaceSlot) != null)
SurfaceSlot = SurfaceSlot.ReadFromString(elementXML.Element(Consts.NodeSurfaceSlot).Value);
else
SurfaceSlot = SurfaceSlot.Undefined;
// grammar info
if (elementXML.Element(Consts.NodeGrammarInfo) != null)
GrammarInfo = new GrammarInfo(elementXML.Element(Consts.NodeGrammarInfo));
else
{
GrammarInfo = new GrammarInfo();
GrammarInfo.Case = GrammarInfoCase.Undefined;
GrammarInfo.PartOfSpeech = GrammarInfoPartOfSpeech.Undefined;
}
// is restored
if (elementXML.Element(Consts.NodeIsRestored) != null)
{
if (elementXML.Element(Consts.NodeIsRestored).Value == Consts.ValueTrue)
IsRestored = true;
else IsRestored = false;
}
else
IsRestored = false;
//is word
IsWord = elementXML.Attribute("type").Value == "Word";
// syntactic parent id
if (elementXML.Element(Consts.NodeSyntacticParent) != null)
SyntacticParentWordId = elementXML.Element(Consts.NodeSyntacticParent).Attribute(Consts.AttWithWordId).Value;
else
SyntacticParentWordId = "-1";
// controller nodes
if (elementXML.Element(Consts.NodeHasController) != null)
{
foreach (var controllerItemXML in elementXML.Elements(Consts.NodeHasController))
ControllerNodes.Add(new Controller(controllerItemXML));
}
// conjucted with
if (elementXML.Element(Consts.NodeConjuctedWith) != null)
ConjuctedWithId = elementXML.Element(Consts.NodeConjuctedWith).Attribute(Consts.AttWithWordId).Value;
else
ConjuctedWithId = "-1";
// semantic info
SemanticInfo = new SemanticInfo(elementXML.Element(Consts.NodeSemanticInfo));
}
private static SemanticInfo ExtractSemanticInfo(Type modelType)
{
SemanticInfo semanticInfo = new SemanticInfo();
// Get model type name
string modelTypeName = modelType.BareTypeName();
// Built-in semantic type mapping
semanticInfo.MappedSemanticTypes.Add(SemanticMapping.GetQualifiedTypeName(modelTypeName));
// Extract semantic info from SemanticEntity attributes on the Model Type.
foreach (SemanticEntityAttribute attribute in modelType.GetCustomAttributes <SemanticEntityAttribute>(inherit: true))
{
semanticInfo.MappedSemanticTypes.Add(SemanticMapping.GetQualifiedTypeName(attribute.EntityName, attribute.Vocab));
string prefix = attribute.Prefix ?? string.Empty;
if (attribute.Public && !String.IsNullOrEmpty(attribute.Prefix))
{
string registeredVocab;
if (semanticInfo.PrefixMappings.TryGetValue(prefix, out registeredVocab))
{
// Prefix mapping already exists; must match.
if (attribute.Vocab != registeredVocab)
{
throw new DxaException(
String.Format("Attempt to use semantic prefix '{0}' for vocabulary '{1}', but is is already used for vocabulary '{2}",
prefix, attribute.Vocab, registeredVocab)
);
}
}
else
{
semanticInfo.PrefixMappings.Add(prefix, attribute.Vocab);
}
semanticInfo.PublicSemanticTypes.Add(String.Format("{0}:{1}", prefix, attribute.EntityName));
}
// There may be multiple Semantic Entity attributes for the same prefix. The first one will be used.
if (semanticInfo.PrefixToSemanticTypeMap.ContainsKey(prefix))
{
if (Log.IsDebugEnabled)
{
Log.Debug($"Type '{modelType.FullName}' has multiple SemanticEntity attributes for prefix '{prefix}'. Ignoring '{attribute.EntityName}'.");
}
}
else
{
semanticInfo.PrefixToSemanticTypeMap.Add(prefix, new SemanticType(attribute.EntityName, attribute.Vocab));
}
}
if (!semanticInfo.PrefixToSemanticTypeMap.ContainsKey(string.Empty))
{
// If there is no SemanticEntity attribute without prefix, we add an implicit one:
semanticInfo.PrefixToSemanticTypeMap.Add(string.Empty, new SemanticType(modelTypeName, SemanticMapping.DefaultVocabulary));
}
string defaultPrefix;
bool mapAllProperties;
SemanticDefaultsAttribute semanticDefaultsAttr = modelType.GetCustomAttribute <SemanticDefaultsAttribute>();
if (semanticDefaultsAttr == null)
{
defaultPrefix = string.Empty;
mapAllProperties = true;
}
else
{
defaultPrefix = semanticDefaultsAttr.Prefix;
mapAllProperties = semanticDefaultsAttr.MapAllProperties;
}
foreach (PropertyInfo propertyInfo in modelType.GetProperties())
{
// Extract semantic info from SemanticEntity attributes on the Model Type's properties
bool useImplicitMapping = mapAllProperties;
List <SemanticPropertyAttribute> attributes = propertyInfo.GetCustomAttributes <SemanticPropertyAttribute>(inherit: true).ToList();
// check if we should be ignoring this mapping completely
if (attributes.Where(x => x.IgnoreMapping).Select(x => x).FirstOrDefault() != null)
{
continue;
}
List <SemanticProperty> semanticProperties = new List <SemanticProperty>();
foreach (SemanticPropertyAttribute attribute in attributes)
{
if (string.IsNullOrEmpty(attribute.PropertyName))
{
continue;
}
// check for known property names
switch (attribute.PropertyName)
{
// To do : we need to make this more generic to collect all fields of a given type (e.g. [SemtanticProperty("_all", typeof(Keyword)])
case SemanticProperty.AllFields:
if (!typeof(IDictionary <string, string>).IsAssignableFrom(propertyInfo.PropertyType) &&
!typeof(IDictionary <string, KeywordModel>).IsAssignableFrom(propertyInfo.PropertyType))
{
throw new DxaException(
$"Invalid semantics for property {modelType.Name}.{propertyInfo.Name}. Properties with [SemanticProperty(\"_all\")] annotation must be of type Dictionary<string, string> or Dictionary<string, KeywordModel>."
);
}
break;
case SemanticProperty.Self:
Type elementType = GetElementType(propertyInfo.PropertyType);
if (!typeof(MediaItem).IsAssignableFrom(elementType) && !typeof(Link).IsAssignableFrom(elementType) && (elementType != typeof(string)) && (elementType != typeof(RichText)))
{
throw new DxaException(
$"Invalid semantics for property {modelType.Name}.{propertyInfo.Name}. Properties with [SemanticProperty(\"_self\")] annotation must be of type MediaItem, Link, String or RichText.");
}
break;
}
string prefix = attribute.Prefix;
string name = attribute.PropertyName;
if (prefix != null)
{
if (semanticInfo.PrefixMappings.ContainsKey(prefix))
{
IList <string> semanticPropertyNames;
if (!semanticInfo.SemanticProperties.TryGetValue(propertyInfo.Name, out semanticPropertyNames))
{
semanticPropertyNames = new List <string>();
semanticInfo.SemanticProperties.Add(propertyInfo.Name, semanticPropertyNames);
}
semanticPropertyNames.Add(attribute.PropertyName);
}
}
else
{
// Skip property names without prefix.
prefix = defaultPrefix;
useImplicitMapping = false;
}
SemanticType semanticType;
if (!semanticInfo.PrefixToSemanticTypeMap.TryGetValue(prefix, out semanticType))
{
throw new DxaException($"Use of undeclared prefix '{prefix}' in property '{propertyInfo.Name}' in type '{modelType.FullName}'.");
}
semanticProperties.Add(new SemanticProperty(prefix, name, semanticType));
}
if (useImplicitMapping)
{
SemanticType semanticType;
if (!semanticInfo.PrefixToSemanticTypeMap.TryGetValue(defaultPrefix, out semanticType))
{
throw new DxaException($"Use of undeclared prefix '{defaultPrefix}' in property '{propertyInfo.Name}' in type '{modelType.FullName}'.");
}
SemanticProperty implicitSemanticProperty = new SemanticProperty(
String.Empty, GetDefaultSemanticPropertyName(propertyInfo),
semanticType
);
semanticProperties.Add(implicitSemanticProperty);
}
if (semanticProperties.Count > 0)
{
if (semanticInfo.PropertySemantics.ContainsKey(propertyInfo.Name))
{
// Properties with same name can exist is a property is reintroduced with a different signature in a subclass.
if (Log.IsDebugEnabled)
{
Log.Debug("Property with name '{0}' is declared multiple times in type {1}.", propertyInfo.Name, modelType.FullName);
}
}
else
{
semanticInfo.PropertySemantics.Add(propertyInfo.Name, semanticProperties);
}
}
}
return(semanticInfo);
}
// <term> ::= <factor> <term2>
protected bool NTF_Term(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.OpenBracket, Lexer.Token.TokenType.Not,
Lexer.Token.TokenType.Number,
Lexer.Token.TokenType.Multiplicative, Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket,
Lexer.Token.TokenType.Comparison, Lexer.Token.TokenType.Additive, Lexer.Token.TokenType.Semicolon);
error |= !NTF_Factor(p, si);
error |= !NTF_Term2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<term> ::= <factor> <term2>");
return !error;
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
SemanticInfo callableInfo;
///la función o procedimiento tiene que estar declarada(o)
if (!symbolTable.GetDefinedCallableDeep(CallableId, out callableInfo))
{
errors.Add(new CompileError
{
Line = Callable.Line,
Column = Callable.CharPositionInLine,
ErrorMessage = string.Format("The name '{0}' could not be found in current context", CallableId),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
///la cantidad de argumentos tiene que coincidir con los de su declaración
if (callableInfo.Args.Count != ArgsCount)
{
errors.Add(new CompileError
{
Line = this.Line,
Column = this.CharPositionInLine,
ErrorMessage = string.Format("No overload for {0} '{1}' takes {2} arguments", (callableInfo.ElementKind == SymbolKind.Function) ? "function" : "procedure", CallableId, ArgsCount),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
ExpressionNode currentArg;
///los tipos de los argumentos tienen que coincidir con los de su definición
for (int i = 0; i < ArgsCount; i++)
{
///obtenemos el i-ésimo argumento
currentArg = ArgAt(i + 1);
///check semantics a currentArg
currentArg.CheckSemantic(symbolTable, errors);
///si currentArg no evaluó de error
if (!Object.Equals(currentArg.NodeInfo, SemanticInfo.SemanticError))
{
///si no coinciden los tipos
if (!callableInfo.Args[i].Type.IsCompatibleWith(currentArg.NodeInfo.Type))
{
errors.Add(new CompileError
{
Line = currentArg.Line,
Column = currentArg.CharPositionInLine,
ErrorMessage = string.Format("Argument {0}: cannot convert from '{1}' to '{2}'", i + 1, currentArg.NodeInfo.Type.Name, callableInfo.Args[i].Type.Name),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
else
{
///hubo una argumento que evaluó de error
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
///seteamos la información del NodeInfo
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo = new SemanticInfo
{
Name = SemanticInfo.NoName,
ElementKind = SymbolKind.NoSymbol,
BuiltInType = callableInfo.BuiltInType,
Type = callableInfo.Type,
ElementsType = callableInfo.ElementsType,
Fields = callableInfo.Fields
};
}
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
SemanticInfo fieldInfo;
for (int i = 0; i < FieldsCount; i++)
{
///los tipos de los campos tienen que haber sido declarados
if (!symbolTable.GetDefinedTypeDeep(Fields[i].Value, out fieldInfo))
{
errors.Add(new CompileError
{
Line = GetChild(2 * i + 2).Line,
Column = GetChild(2 * i + 2).CharPositionInLine,
ErrorMessage = string.Format("Type '{0}' could not be found in current context", Fields[i].Value),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
else
{
realFields.Add(fieldInfo);
}
for (int j = 0; j < i; j++)
{
///chequeamos que no existan 2 campos con el mismo nombre
if (Fields[i].Key.Equals(Fields[j].Key))
{
errors.Add(new CompileError
{
Line = GetChild(2 * i + 1).Line,
Column = GetChild(2 * i + 1).CharPositionInLine,
ErrorMessage = string.Format("The field name '{0}' is a duplicate", Fields[i].Key),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
}
/////si no ha evaluado de error le seteamos los valores
//if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
//{
// NodeInfo.Type = SemanticInfo.Void;
// NodeInfo.BuiltInType = BuiltInType.Void;
//}
///si evaluó de error
if (Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
///no declaramos el record porque uno de sus campos no existe
return;
}
///seteamos la información del NodeInfo
NodeInfo.Type = SemanticInfo.Void;
NodeInfo.BuiltInType = BuiltInType.Void;
List <KeyValuePair <string, SemanticInfo> > fields = new List <KeyValuePair <string, SemanticInfo> >();
///guardamos los fields del record
for (int i = 0; i < FieldsCount; i++)
{
fields.Add(new KeyValuePair <string, SemanticInfo>(Fields[i].Key, realFields[i]));
}
SemanticInfo recordAlias;
symbolTable.GetDefinedTypeDeep(RecordId, out recordAlias);
recordAlias.BuiltInType = BuiltInType.Record;
recordAlias.Fields = fields;
recordAlias.IsPending = false;
recordAlias.Type = recordAlias;
recordParche = recordAlias;
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///check semantics al VarDeclarationNode
base.CheckSemantic(symbolTable, errors);
///check semantics al InitExpression
InitExpression.CheckSemantic(symbolTable, errors);
///si InitExpression evalúa de error este también
if (Object.Equals(InitExpression.NodeInfo, SemanticInfo.SemanticError))
{
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
SemanticInfo typeInfo;
///el tipo de la variable tiene que estar definido
if (!symbolTable.GetDefinedTypeDeep(VarTypeId, out typeInfo))
{
errors.Add(new CompileError
{
Line = VarType.Line,
Column = VarType.CharPositionInLine,
ErrorMessage = string.Format("Type '{0}' could not be found in current context", VarTypeId),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///si existe el tipo de la variable
if (!Object.Equals(typeInfo, SemanticInfo.SemanticError))
{
///el tipo de InitExpression y VarTypeId tienen que ser compatibles
if (!InitExpression.NodeInfo.Type.IsCompatibleWith(typeInfo.Type))
{
errors.Add(new CompileError
{
Line = VarType.Line,
Column = VarType.CharPositionInLine,
ErrorMessage = string.Format("Cannot implicitly convert type '{0}' to '{1}'", InitExpression.NodeInfo.Type.Name, VarTypeId),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
///si no hubo error seteamos los campos necesarios
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo.Type = SemanticInfo.Void;
NodeInfo.BuiltInType = BuiltInType.Void;
}
SemanticInfo variable = new SemanticInfo
{
Name = VariableName,
ElementKind = SymbolKind.Variable,
BuiltInType = typeInfo.BuiltInType,
Type = typeInfo.Type,
ElementsType = typeInfo.ElementsType,
Fields = typeInfo.Fields
};
///guardamos el ILType en el NodeInfo
NodeInfo.ILType = InitExpression.NodeInfo.ILType;
///agregamos la variable a la tabla de símbolos
symbolTable.InsertSymbol(variable);
}
// <array> ::= [ <int> ] | e
protected bool NTF_Array(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.OpenSquareBracket,
Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket, Lexer.Token.TokenType.Semicolon);
if (lookahead.Type == Lexer.Token.TokenType.OpenSquareBracket)
{
SemanticInfo inti = new SemanticInfo();
error |= !Match(p, Lexer.Token.TokenType.OpenSquareBracket);
error |= !NTF_Int(p, inti);
error |= !Match(p, Lexer.Token.TokenType.CloseSquareBracket);
si.ArrayIndices.Add(inti.Name);
if (!error && p == 1)
Log(LogType.Parse, "<array> ::= [ <int> ]");
}
// follow=,+)+;
else if (lookahead.Type == Lexer.Token.TokenType.Comma || lookahead.Type == Lexer.Token.TokenType.CloseBracket
|| lookahead.Type == Lexer.Token.TokenType.Semicolon)
{
if (p == 1)
Log(LogType.Parse, "<array> ::= e");
}
else
error = true;
return !error;
}
// <arraystar> ::= e | <array> <arraystar>
protected bool NTF_ArrayStar(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.OpenSquareBracket,
Lexer.Token.TokenType.Semicolon, Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket);
if (lookahead.Type == Lexer.Token.TokenType.OpenSquareBracket)
{
error |= !NTF_Array(p, si);
error |= !NTF_ArrayStar(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<arraystar> ::= <array> <arraystar>");
}
// follow=;+,+)
else
if (lookahead.Type == Lexer.Token.TokenType.Semicolon || lookahead.Type == Lexer.Token.TokenType.Comma
|| lookahead.Type == Lexer.Token.TokenType.CloseBracket)
{
if (p == 1)
Log(LogType.Parse, "<arraystar> ::= e");
}
else
error = true;
return !error;
}
// <arithexpr> ::= <term> <arithexpr2> | <sign> <term> <arithexpr2>
protected bool NTF_ArithExpr(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "+", "-", Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.Number,
Lexer.Token.TokenType.OpenBracket, Lexer.Token.TokenType.Not,
Lexer.Token.TokenType.Comparison, Lexer.Token.TokenType.Additive, Lexer.Token.TokenType.CloseSquareBracket,
Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket, Lexer.Token.TokenType.Semicolon);
// first(<term>)=first(<variable>)+num+(+!
if (lookahead.Type == Lexer.Token.TokenType.Identifier || lookahead.Type == Lexer.Token.TokenType.Number
|| lookahead.Type == Lexer.Token.TokenType.OpenBracket || lookahead.Type == Lexer.Token.TokenType.Not)
{
error |= !NTF_Term(p, si);
error |= !NTF_ArithExpr2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<arithexpr> ::= <term> <arithexpr2>");
}
else if (lookahead.Value == "+" || lookahead.Value == "-")
{
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_Sign(p, si2);
error |= !NTF_Term(p, si);
si.Code.Append(si2.Code);
error |= !NTF_ArithExpr2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<arithexpr> ::= <sign> <term> <arithexpr2>");
}
else
error = true;
return !error;
}
// <arithexpr2> ::= e | addop <term><arithexpr2>
protected bool NTF_ArithExpr2(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Additive,
Lexer.Token.TokenType.Semicolon, Lexer.Token.TokenType.CloseBracket, Lexer.Token.TokenType.Comparison,
Lexer.Token.TokenType.CloseSquareBracket, Lexer.Token.TokenType.Comma);
// first(<arithexpr2>)=addop
if (lookahead.Type == Lexer.Token.TokenType.Additive)
{
string op = lookahead.Value;
if (op == "+") op = "add";
else if (op == "-") op = "sub";
else if (op == "||") op = "or";
error |= !Match(p, Lexer.Token.TokenType.Additive);
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_Term(p, si2);
if (p == 2)
{
if (si.Type == "int" && si2.Type == "int")
{
// TODO: handle logical or (and and)
// paste si2 then add the 2 together freeing up the temp vars if needed
si.Code.Append(si2.Code);
si.Code.Append("addi r3,r14," + si.Offset + "\nlw r1,stack(r3)\n" +
"addi r3,r14," + si2.Offset + "\nlw r2,stack(r3)\n" + op + " r1,r1,r2\n");
CompilerStack.Peek().SafeFreeTemp(si.Offset);
CompilerStack.Peek().SafeFreeTemp(si2.Offset);
int tmp = CompilerStack.Peek().RequestTemp() + CompilerStack.Peek().GetTotalRealOffset();
si.Code.Append("addi r2,r14," + tmp + "\nsw stack(r2),r1\n");
si.Offset = tmp;
}
}
error |= !NTF_ArithExpr2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<arithexpr2> ::= addop <term> <arithexpr2>");
}
// follow(<arithexpr2>)=follow(<arithexpr>)=follow(<expr>)+relop+addop+]+,+follow(<aparams>)
// =;+)+relop+addop+]+,
else if (lookahead.Type == Lexer.Token.TokenType.Semicolon || lookahead.Type == Lexer.Token.TokenType.CloseBracket
|| lookahead.Type == Lexer.Token.TokenType.Additive || lookahead.Type == Lexer.Token.TokenType.Comparison
|| lookahead.Type == Lexer.Token.TokenType.CloseSquareBracket || lookahead.Type == Lexer.Token.TokenType.Comma)
{
if (p == 1)
Log(LogType.Parse, "<arithexpr2> ::= e");
}
else
error = true;
return !error;
}
// <aparamstailstar> ::= e | <aparamstail> <aparamstailstar>
protected bool NTF_AParamsTailStar(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket);
if (lookahead.Type == Lexer.Token.TokenType.Comma)
{
// TODO: handle function params
error |= !NTF_AParamsTail(p, si);
error |= !NTF_AParamsTailStar(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<aparamstailstar> ::= <apramstail> <aparamstailstar>");
}
// follow=)
else if (lookahead.Type == Lexer.Token.TokenType.CloseBracket)
{
if (p == 1)
Log(LogType.Parse, "<aparamstailstar> ::= e");
}
else
error = true;
return !error;
}
// <apramstail> ::= , <arithexpr> | e
protected bool NTF_AParamsTail(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket);
if (lookahead.Type == Lexer.Token.TokenType.Comma)
{
SemanticInfo si2 = new SemanticInfo();
error |= !Match(p, Lexer.Token.TokenType.Comma);
error |= !NTF_ArithExpr(p, si2);
if (p == 2)
si.Parameters.Add(new SemanticInfo.ParameterInfo
{
Code = si2.Code,
OldFrameOffset = si2.Offset,
Type = si2.Type,
});
if (!error && p == 1)
Log(LogType.Parse, "<aparamstail> ::= , <arithexpr>");
}
else if (lookahead.Type == Lexer.Token.TokenType.CloseBracket)
{
if (p == 1)
Log(LogType.Parse, "<araparmstail> ::= e");
}
else
error = true;
return !error;
}
// <aparams> ::= <arithexpr> <aparamstailstar> | e
protected bool NTF_AParams(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "+", "-", Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.Number,
Lexer.Token.TokenType.OpenBracket, Lexer.Token.TokenType.Not, Lexer.Token.TokenType.CloseBracket);
// first(<arithexpr>)=++-+first(<term>)=++-+id+num+(+!
if (lookahead.Value == "+" || lookahead.Value == "-" || lookahead.Type == Lexer.Token.TokenType.Identifier
|| lookahead.Type == Lexer.Token.TokenType.Number || lookahead.Type == Lexer.Token.TokenType.OpenBracket
|| lookahead.Type == Lexer.Token.TokenType.Not)
{
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_ArithExpr(p, si2);
if (p == 2)
si.Parameters.Add(new SemanticInfo.ParameterInfo
{
Code = si2.Code,
OldFrameOffset = si2.Offset,
Type = si2.Type,
});
error |= !NTF_AParamsTailStar(p, si2);
if (!error && p == 1)
Log(LogType.Parse, "<aparams> ::= <arithexpr> <aparamstail>");
}
// follow = )
else if (lookahead.Type == Lexer.Token.TokenType.CloseBracket)
{
if (p == 1)
Log(LogType.Parse, "<aparams> ::= e");
}
else
error = true;
return !error;
}
// <progbody> ::= program <funcbody>;<functionstar>
// MODIFIED
// <progbody> ::= program <funcbody>;<definitionstar>
protected bool NTF_ProgBody(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "program", Lexer.Token.TokenType.EndOfFile);
if (p == 1)
{
SymbolTable.Information info;
if ((info = CurrentScope.Find("$program", false)) != null)
{
SemanticErrorSymbolAlreadyDefined("$program");
error = true;
if (info.Properties.ContainsKey("function_symtable"))
if (info.Properties["function_symtable"] != null)
CurrentScope = info.Properties["function_symtable"] as SymbolTable;
else
info.Properties["function_symtable"] = CurrentScope = CurrentScope.CreateChild("$program");
else
{
info.Properties.Add("function_symtable", CurrentScope.CreateChild("$program"));
CurrentScope = info.Properties["function_symtable"] as SymbolTable;
}
}
else
{
info = CurrentScope.Add("$program");
info.Kind = SymbolTable.Information.EKind.Function;
info.Properties.Add("function_symtable", CurrentScope.CreateChild("$program"));
info.Properties.Add("function_parameters", new List<SemanticInfo.ParameterInfo>());
info.Properties.Add("function_type", "<no type>");
CurrentScope = info.Properties["function_symtable"] as SymbolTable;
}
}
else
CurrentScope = CurrentScope.Find("$program", false).Properties["function_symtable"] as SymbolTable;
if (p == 2)
si.Code.Append("entry\n\nalign\naddi r14,r0,0\n");
error |= !Match(p, "program");
error |= !NTF_FuncBody(p, si);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
si.Code.Append("hlt\n");
CurrentScope = CurrentScope.Parent;
error |= !NTF_DefinitionStar(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<progbody> ::= program <funcbody> ; <definitionstar>");
return !error;
}
// <classdecl> ::= class id { <typedeclstar> <functionstar> } ;
// MODIFIED
// <classdecl> ::= class id { <definitionstar> } ;
protected bool NTF_ClassDecl(int p, SemanticInfo si)
{
/*
if (Match("class") && Match(Lexer.Token.TokenType.Identifier) && Match(Lexer.Token.TokenType.OpenBrace)
&& NTF_TypeDeclStar() && NTF_FunctionStar() && Match(Lexer.Token.TokenType.CloseBrace)
&& Match(Lexer.Token.TokenType.Semicolon))
{
Log("<classdecl> ::= class id {<typedeclstar><functionstar>};");
return true;
}
else
return false;
*/
bool error = SkipErrors(p, "class", "program");
error |= !Match(p, "class");
if (p == 1)
{
SymbolTable child;
SymbolTable.Information info;
if ((info = CurrentScope.Find(lookahead.Value, false)) != null)
{
SemanticErrorSymbolAlreadyDefined(lookahead.Value);
error = true;
if (info.Properties.ContainsKey("class_symtable"))
if (info.Properties["class_symtable"] != null)
child = info.Properties["class_symtable"] as SymbolTable;
else
info.Properties["class_symtable"] = child = CurrentScope.CreateChild(lookahead.Value);
else
{
info.Properties.Add("class_symtable", CurrentScope.CreateChild(lookahead.Value));
child = info.Properties["class_symtable"] as SymbolTable;
}
}
else
{
info = CurrentScope.Add(lookahead.Value);
child = CurrentScope.CreateChild(lookahead.Value);
info.Kind = SymbolTable.Information.EKind.Class;
info.Properties.Add("class_symtable", child);
}
CurrentScope = child;
}
else
{
CurrentScope = CurrentScope.Find(lookahead.Value, false).Properties["class_symtable"] as SymbolTable;
}
error |= !Match(p, Lexer.Token.TokenType.Identifier);
error |= !Match(p, Lexer.Token.TokenType.OpenBrace);
error |= !NTF_DefinitionStar(p, si);
error |= !Match(p, Lexer.Token.TokenType.CloseBrace);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
CurrentScope = CurrentScope.Parent;
if (!error && p == 1)
Log(LogType.Parse, "<classdecl> := class id { <definitionstar> } ;");
return !error;
}
private static SemanticInfo ExtractSemanticInfo(Type modelType)
{
SemanticInfo semanticInfo = new SemanticInfo();
// Built-in semantic type mapping
string bareTypeName = modelType.Name.Split('`')[0]; // Type name without generic type parameters (if any)
semanticInfo.MappedSemanticTypes.Add(SemanticMapping.GetQualifiedTypeName(bareTypeName));
// Extract semantic info from SemanticEntity attributes on the Model Type.
foreach (SemanticEntityAttribute attribute in modelType.GetCustomAttributes(true).Where(a => a is SemanticEntityAttribute))
{
semanticInfo.MappedSemanticTypes.Add(SemanticMapping.GetQualifiedTypeName(attribute.EntityName, attribute.Vocab));
if (!attribute.Public || string.IsNullOrEmpty(attribute.Prefix))
{
continue;
}
string prefix = attribute.Prefix;
string registeredVocab;
if (semanticInfo.PrefixMappings.TryGetValue(prefix, out registeredVocab))
{
// Prefix mapping already exists; must match.
if (attribute.Vocab != registeredVocab)
{
throw new DxaException(
string.Format("Attempt to use semantic prefix '{0}' for vocabulary '{1}', but is is already used for vocabulary '{2}",
prefix, attribute.Vocab, registeredVocab)
);
}
}
else
{
semanticInfo.PrefixMappings.Add(prefix, attribute.Vocab);
}
semanticInfo.PublicSemanticTypes.Add(String.Format("{0}:{1}", prefix, attribute.EntityName));
}
// Extract semantic info from SemanticEntity attributes on the Model Type's properties
foreach (MemberInfo memberInfo in modelType.GetMembers(BindingFlags.Public | BindingFlags.Instance))
{
foreach (SemanticPropertyAttribute attribute in memberInfo.GetCustomAttributes(true).Where(a => a is SemanticPropertyAttribute))
{
if (string.IsNullOrEmpty(attribute.PropertyName))
{
// Skip properties without name.
continue;
}
string[] semanticPropertyNameParts = attribute.PropertyName.Split(':');
if (semanticPropertyNameParts.Length < 2)
{
// Skip property names without prefix.
continue;
}
string prefix = semanticPropertyNameParts[0];
if (!semanticInfo.PrefixMappings.ContainsKey(prefix))
{
// Skip property names with prefix which is not declared as public prefix on the type.
continue;
}
IList <string> semanticPropertyNames;
if (!semanticInfo.SemanticProperties.TryGetValue(memberInfo.Name, out semanticPropertyNames))
{
semanticPropertyNames = new List <string>();
semanticInfo.SemanticProperties.Add(memberInfo.Name, semanticPropertyNames);
}
semanticPropertyNames.Add(attribute.PropertyName);
}
}
return(semanticInfo);
}
// <classdeclstar> ::= e | <classdecl><classdeclstar>
protected bool NTF_ClassDeclStar(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "class", "program");
if (lookahead.Value == "class") // first(<classdecl>)
{
error |= !NTF_ClassDecl(p, si);
error |= !NTF_ClassDeclStar(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<classdeclstar> ::= <classdecl><classdeclstar>");
}
else
if (lookahead.Value == "program") // follow(<classdecl>)
{
if (p == 1)
Log(LogType.Parse, "<classdeclstar> ::= e");
}
else
error = true;
return !error;
}
// <variable> ::= <idnest> <indicestar>
protected bool NTF_Variable(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Identifier,
Lexer.Token.TokenType.Assignement, Lexer.Token.TokenType.Multiplicative, Lexer.Token.TokenType.Additive,
Lexer.Token.TokenType.Comparison, Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket,
Lexer.Token.TokenType.Semicolon);
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_IdNest(p, si2);
error |= !NTF_IndiceStar(p, si2);
if (p == 2)
{
// find the type of this variable
SymbolTable st = CurrentScope;
SymbolTable.Information info;
si.Offset = 0;
foreach (SemanticInfo.ParameterInfo pi in si2.Parameters)
{
info = st.Find(pi.Name, true);
if (info == null || info.Kind != SymbolTable.Information.EKind.Variable)
{
SemanticErrorVariableNotFound(pi.Name);
return false;
}
si.Offset += (int)info.Properties["variable_offset"];
info = Global.Find(info.Properties["variable_type"] as string, false);
if (info == null || info.Kind != SymbolTable.Information.EKind.Class)
{
SemanticErrorWrongType(pi.Name);
return false;
}
st = info.Properties["class_symtable"] as SymbolTable;
}
info = st.Find(si2.Name, si2.Parameters.Count == 0);
if (info == null || info.Kind != SymbolTable.Information.EKind.Variable)
{
SemanticErrorVariableNotFound(si.Name);
return false;
}
si.Type = (string)info.Properties["variable_type"];
si.Offset += (int)info.Properties["variable_offset"];
}
if (!error && p == 1)
Log(LogType.Parse, "<variable> ::= <idnest> <indicestar>");
return !error;
}
// <definition> ::= <type> id <definition2>
protected bool NTF_Definition(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "int", "float", Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.CloseBrace,
Lexer.Token.TokenType.EndOfFile);
error |= !NTF_Type(p, si);
si.Name = lookahead.Value;
error |= !Match(p, Lexer.Token.TokenType.Identifier);
error |= !NTF_Definition2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<definition> ::= <type> id <definition2>");
return !error;
}
// <term2> ::= e | multop <factor> <term2>
protected bool NTF_Term2(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Multiplicative,
Lexer.Token.TokenType.Semicolon, Lexer.Token.TokenType.CloseBracket, Lexer.Token.TokenType.Additive,
Lexer.Token.TokenType.Comparison, Lexer.Token.TokenType.CloseSquareBracket, Lexer.Token.TokenType.Comma);
if (lookahead.Type == Lexer.Token.TokenType.Multiplicative)
{
string op = lookahead.Value;
if (op == "*") op = "mul";
else if (op == "/") op = "div";
else if (op == "&&") op = "and";
error |= !Match(p, Lexer.Token.TokenType.Multiplicative);
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_Factor(p, si2);
if (p == 2)
{
// TODO: handle more types
if (si.Type == "int" && si2.Type == "int")
{
// TODO: handle logical or (and and)
// paste si2 then add the 2 together freeing up the temp vars if needed
si.Code.Append(si2.Code);
si.Code.Append("addi r3,r14," + si.Offset + "\nlw r1,stack(r3)\n" +
"addi r3,r14," + si2.Offset + "\nlw r2,stack(r3)\n" + op + " r1,r1,r2\n");
CompilerStack.Peek().SafeFreeTemp(si.Offset);
CompilerStack.Peek().SafeFreeTemp(si2.Offset);
int tmp = CompilerStack.Peek().RequestTemp() + CompilerStack.Peek().GetTotalRealOffset();
si.Code.Append("addi r2,r14," + tmp + "\nsw stack(r2),r1\n");
si.Offset = tmp;
}
else
{
if (si.Type != "int")
SemanticErrorWrongType(si.Name);
if (si2.Type != "int")
SemanticErrorWrongType(si2.Name);
error = true;
}
}
error |= !NTF_Term2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<term2> ::= multop <factor> <term2>");
}
// follow(<term2>)=follow(<term>)=follow(<arithexpr>)=;+)+relop+addop+]+,
else if (lookahead.Type == Lexer.Token.TokenType.Semicolon || lookahead.Type == Lexer.Token.TokenType.CloseBracket
|| lookahead.Type == Lexer.Token.TokenType.Additive || lookahead.Type == Lexer.Token.TokenType.Comparison
|| lookahead.Type == Lexer.Token.TokenType.CloseSquareBracket || lookahead.Type == Lexer.Token.TokenType.Comma)
{
if (p == 1)
Log(LogType.Parse, "<term2> ::= e");
}
else
error = true;
return !error;
}
// <definition2> ::= ( <fparams> ) <funcbody> ;
// | <arraystar> ;
protected bool NTF_Definition2(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.OpenBracket, Lexer.Token.TokenType.OpenSquareBracket,
Lexer.Token.TokenType.Semicolon,
Lexer.Token.TokenType.CloseBrace, Lexer.Token.TokenType.EndOfFile);
if (lookahead.Type == Lexer.Token.TokenType.OpenBracket)
{
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_FParams(p, si2);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
if (p == 1)
{
SymbolTable.Information info;
if ((info = CurrentScope.Find(si.Name, false)) != null)
{
SemanticErrorSymbolAlreadyDefined(si.Name);
error = true;
if (info.Properties.ContainsKey("function_symtable"))
if (info.Properties["function_symtable"] != null)
CurrentScope = info.Properties["function_symtable"] as SymbolTable;
else
info.Properties["function_symtable"] = CurrentScope = CurrentScope.CreateChild(si.Name);
else
{
info.Properties.Add(si.Name, CurrentScope.CreateChild(si.Name));
CurrentScope = info.Properties[si.Name] as SymbolTable;
}
}
else
{
info = CurrentScope.Add(si.Name);
info.Kind = SymbolTable.Information.EKind.Function;
info.Properties.Add("function_parameters", si2.Parameters);
info.Properties.Add("function_type", si.Type);
info.Properties.Add("function_symtable", CurrentScope.CreateChild(si.Name));
CurrentScope = info.Properties["function_symtable"] as SymbolTable;
// also add the parameters as member variables
foreach (SemanticInfo.ParameterInfo pi in si2.Parameters)
{
SymbolTable.Information inf = (info.Properties["function_symtable"] as SymbolTable)
.Add(pi.Name);
inf.Kind = SymbolTable.Information.EKind.Variable;
inf.Properties.Add("variable_type", pi.Type);
inf.Properties.Add("variable_arrayindices", pi.ArrayIndices.ToArray());
//inf.Properties.Add("variable_offset", CompilerStack.Peek().GetTotalRealOffset());
}
}
}
else
{
si.Code.Append(si2.Code);
CurrentScope = CurrentScope.Find(si.Name, false).Properties["function_symtable"] as SymbolTable;
}
CompilerStack.Push(new StackFrame(this, true));
// the function label
if (p == 2)
si.Code.Append(GetFunctionLabelName(CurrentScope.Parent, si.Name) + " nop\n");
error |= !NTF_FuncBody(p, si);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
si.Code.Append("% append default return\naddi r1,r0,0\njr r15\n");
CompilerStack.Pop();
CurrentScope = CurrentScope.Parent;
if (!error && p == 1)
Log(LogType.Parse, "<definition2> ::= ( <fparams> ) <funcbody> ;");
}
else if (lookahead.Type == Lexer.Token.TokenType.OpenSquareBracket || lookahead.Type == Lexer.Token.TokenType.Semicolon)
{
error |= !NTF_ArrayStar(p, si);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 1)
{
SymbolTable.Information info;
if ((info = CurrentScope.Find(si.Name, false)) != null)
{
SemanticErrorSymbolAlreadyDefined(si.Name);
error = true;
}
else
{
info = CurrentScope.Add(si.Name);
info.Kind = SymbolTable.Information.EKind.Variable;
info.Properties["variable_arrayindices"] = new string[si.ArrayIndices.Count];
for (int i = 0; i < si.ArrayIndices.Count; ++i)
(info.Properties["variable_arrayindices"] as string[])[i] = si.ArrayIndices[i];
info.Properties["variable_type"] = si.Type;
// TODO: account for objects bigger than 4
//info.Properties.Add("variable_offset", CompilerStack.Peek().GetTotalRealOffset());
}
}
if (!error && p == 1)
Log(LogType.Parse, "<definition2> ::= <arraystar> ;");
}
return !error;
}
// <statementstar> ::= e | <statement><statementstar>
protected bool NTF_StatementStar(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "if", "for", "cin", "cout", "return", Lexer.Token.TokenType.Identifier,
Lexer.Token.TokenType.CloseBrace);
// first(<statement>)=first(<variable>)+if+for+cin+cout+return
// =first(<idnest>)+id+if+for+cin+cout+return
// =id+if+for+cin+cout+return
if (lookahead.Value == "if" || lookahead.Value == "for" || lookahead.Value == "cin" || lookahead.Value == "cout"
|| lookahead.Value == "return" || lookahead.Type == Lexer.Token.TokenType.Identifier)
{
error |= !NTF_Statement(p, si);
error |= !NTF_StatementStar(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<statementstar> ::= <statement><statementstar>");
}
// follow(<statementstar>)=}
else if (lookahead.Type == Lexer.Token.TokenType.CloseBrace)
{
if (p == 1)
Log(LogType.Parse, "<statementstar> ::= e");
}
else
error = true;
return !error;
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///check semantics al CallableDeclarationNode
base.CheckSemantic(symbolTable, errors);
SemanticInfo returnTypeInfo;
///chequeamos si existe el tipo de retorno
if (!symbolTable.GetDefinedTypeDeep(ReturnType, out returnTypeInfo))
{
errors.Add(new CompileError
{
Line = GetChild(ChildCount - 2).Line,
Column = GetChild(ChildCount - 2).CharPositionInLine,
ErrorMessage = string.Format("Type '{0}' could not be found in current context", ReturnType),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///si CallableBody no evaluó de error y se encontró el tipo de retorno
if (!Object.Equals(CallableBody.NodeInfo, SemanticInfo.SemanticError) &&
!Object.Equals(returnTypeInfo, SemanticInfo.SemanticError))
{
///el tipo deretorno del CallableBody tiene que ser compatible con el tipo de retorno
if (!CallableBody.NodeInfo.Type.IsCompatibleWith(returnTypeInfo))
{
errors.Add(new CompileError
{
Line = GetChild(ChildCount - 2).Line,
Column = GetChild(ChildCount - 2).CharPositionInLine,
ErrorMessage = string.Format("Cannot implicitly convert type '{0}' to '{1}'", CallableBody.NodeInfo.Type.Name, returnTypeInfo.Type.Name),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
///si no ha evaluado de error le seteamos los valores
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo = new SemanticInfo
{
Name = SemanticInfo.NoName,
ElementKind = SymbolKind.NoSymbol,
Type = SemanticInfo.Void,
BuiltInType = BuiltInType.Void,
ILType = returnTypeInfo.ILType
};
functionParche = returnTypeInfo;
SemanticInfo arg;
///guardamos los ILType
for (int i = 0; i < Parameters.Count; i++)
{
symbolTable.GetDefinedTypeDeep(Parameters[i].Value, out arg);
ILTypes.Add(arg.ILType);
}
}
SemanticInfo function;
///completamos la definición de la función
symbolTable.GetDefinedCallableDeep(CallableId, out function);
function.IsPending = false;
}
private void _createFromAPIFormat(XElement elementXML, bool useNamespaces)
{
// смотрим что обрабатываем - слово или знак препинания
var elementNode = elementXML.Element(XName.Get(Consts.NodeWord, Namespaces.NamespaceLinguistic));
if (elementNode != null)
ElementType = ComprenoSentenceElementType.ReadFromString(elementNode.Name.LocalName);
else {
elementNode = elementXML.Element(XName.Get(Consts.NodePunctuator, useNamespaces ? Namespaces.NamespaceLinguistic : ""));
if (elementNode != null)
ElementType = ComprenoSentenceElementType.ReadFromString(elementNode.Element(XName.Get(Consts.NodePunctuatorType, useNamespaces ? Namespaces.NamespaceLinguistic : "")).Attribute(XName.Get(Consts.AttResourse, useNamespaces ? Namespaces.NamespaceRDF : "")).Value);
}
Debug.Assert(elementNode != null);
Id = elementNode.Attribute(XName.Get(Consts.AttElementNodeId, useNamespaces ? Namespaces.NamespaceRDF : "")).Value;
// проваливаемся на 1 уровень ниже - на нем располагаются все свойства
elementXML = elementNode;
var nodeIdName = XName.Get(Consts.AttElementNodeId, useNamespaces ? Namespaces.NamespaceRDF : "");
// ChildTreeInit
// вершиной дерева всегда будет ID слова
ChildWordsIds.AddChild(Id);
// Order
var orderNodeName = XName.Get(Consts.NodeWordOrder, useNamespaces ? Namespaces.NamespaceLinguistic : "");
Debug.Assert(elementXML.Element(orderNodeName) != null);
Order = int.Parse(elementXML.Element(orderNodeName).Value);
// Text
var textNodeName = XName.Get(Consts.NodeWordText, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(textNodeName) != null)
Text = elementXML.Element(textNodeName).Value;
else
Text = "";
// Lemma
var lemmaNodeName = XName.Get(Consts.NodeLemmaName, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(lemmaNodeName) != null)
Lemma = elementXML.Element(lemmaNodeName).Value;
else
Lemma = "";
// Syntactic Role
var syntacticRoleNodeName = XName.Get(Consts.NodeSyntacticRole, useNamespaces ? Namespaces.NamespaceLinguistic : "");
var syntacticRoleAttName = XName.Get(Consts.AttResourse, useNamespaces ? Namespaces.NamespaceRDF : "");
if (elementXML.Element(syntacticRoleNodeName) != null)
SyntacticRole = SyntacticRole.ReadFromString(elementXML.Element(syntacticRoleNodeName).Attribute(syntacticRoleAttName).Value);
else
SyntacticRole = SyntacticRole.Undefined;
// Surface slot
var surfaceSlotNodeName = XName.Get(Consts.NodeSurfaceSlot, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(surfaceSlotNodeName) != null)
SurfaceSlot = SurfaceSlot.ReadFromString(elementXML.Element(surfaceSlotNodeName).Value);
else
SurfaceSlot = SurfaceSlot.Undefined;
// grammar info
var grammarInfoNodeName = XName.Get(Consts.NodeGrammarInfo, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(grammarInfoNodeName) != null)
GrammarInfo = new GrammarInfo(elementXML.Element(grammarInfoNodeName), useNamespaces);
else
GrammarInfo = new GrammarInfo();
// is restored
var isRestoredNodeName = XName.Get(Consts.NodeIsRestored, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(isRestoredNodeName) != null)
IsRestored = (elementXML.Element(isRestoredNodeName).Value == Consts.ValueTrue);
else
IsRestored = false;
//is word
IsWord = ComprenoSentenceElementType.IsWord(ElementType);
// syntactic parent id
var syntacticParentNodeName = XName.Get(Consts.NodeSyntacticParent, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(syntacticParentNodeName) != null)
SyntacticParentWordId = elementXML.Element(syntacticParentNodeName).Attribute(nodeIdName).Value;
else
SyntacticParentWordId = "-1";
// controller nodes
var controllerNodeName = XName.Get(Consts.NodeHasController, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(controllerNodeName) != null)
{
var singleControllerNodeName = XName.Get(Consts.NodeController, useNamespaces ? Namespaces.NamespaceLinguistic : "");
foreach (var controllerItemXML in elementXML.Element(controllerNodeName).Elements(singleControllerNodeName))
ControllerNodes.Add(new Controller(controllerItemXML, useNamespaces));
}
// conjucted with
var conjuctedWithNodeName = XName.Get(Consts.NodeConjuctedWith, useNamespaces ? Namespaces.NamespaceLinguistic : "");
if (elementXML.Element(conjuctedWithNodeName) != null)
ConjuctedWithId = elementXML.Element(conjuctedWithNodeName).Attribute(nodeIdName).Value;
else
ConjuctedWithId = "-1";
// semantic info --> lexical class predefined
var semanticInfoNodeName = XName.Get(Consts.NodeSemanticInfo, useNamespaces ? Namespaces.NamespaceLinguistic : "");
SemanticInfo = new SemanticInfo(elementXML.Element(semanticInfoNodeName), useNamespaces);
}
// <expr> ::= <arithexpr><expr2>
protected bool NTF_Expr(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "+", "-", Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.Number,
Lexer.Token.TokenType.OpenBracket, Lexer.Token.TokenType.Not,
Lexer.Token.TokenType.Semicolon, Lexer.Token.TokenType.CloseBracket);
error |= !NTF_ArithExpr(p, si);
error |= !NTF_Expr2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<expr> ::= <arithexpr> <expr2>");
return !error;
}
// <statement> ::= <variable> := <expr>
// | if ( <expr> ) then <statblock> else <statblock> fi ;
// | for ( <statement> ; <expr> ; <statement> ) <statblock> ;
// | cin ( <variable> ) ;
// | cout ( <expr> ) ;
// | return ( <expr> ) ;
protected bool NTF_Statement(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Identifier, "if", "for", "cin", "cout", "return",
Lexer.Token.TokenType.CloseBrace, Lexer.Token.TokenType.Semicolon, "else", "fi");
SemanticInfo si2, si3, si4, si5;
// first(<variable>)
if (lookahead.Type == Lexer.Token.TokenType.Identifier)
{
si2 = new SemanticInfo();
error |= !NTF_Variable(p, si2);
error |= !Match(p, Lexer.Token.TokenType.Assignement);
si3 = new SemanticInfo();
error |= !NTF_Expr(p, si3);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
{
// check to see if the types match
if (si2.Type != si3.Type)
SemanticErrorWrongTypeExpected(si3.Type, si2.Type);
// paste si3.code and store the offset, after which you free the temp var if necessary
si.Code.Append(si3.Code);
si.Code.Append("addi r1,r14," + si3.Offset + "\nlw r2,stack(r1)\naddi r1,r14," + si2.Offset +
"\nsw stack(r1), r2\n");
}
if (!error && p == 1)
Log(LogType.Parse, "<statement> ::= <variable> := <expr>");
}
else if (lookahead.Value == "if")
{
error |= !Match(p, "if");
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
si2 = new SemanticInfo();
error |= !NTF_Expr(p, si2);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
error |= !Match(p, "then");
si3 = new SemanticInfo();
error |= !NTF_StatBlock(p, si3);
error |= !Match(p, "else");
si4 = new SemanticInfo();
error |= !NTF_StatBlock(p, si4);
error |= !Match(p, "fi");
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
{
// test expression
si.Code.Append(si2.Code);
// jump
string j1 = GetNewJumpLabel();
si.Code.Append("addi r2,r14," + si2.Offset + "\nlw r1,stack(r2)\nbz r1, " + j1 + "\n");
// then code
si.Code.Append(si3.Code);
// exit if
string j2 = GetNewJumpLabel();
si.Code.Append("j " + j2 + "\n");
// else code
si.Code.Append(j1 + " nop\n");
si.Code.Append(si4.Code);
// finish up
si.Code.Append(j2 + " nop\n");
}
if (!error && p == 1)
Log(LogType.Parse, "<statement> ::= if ( <expr> ) then <statblock> else <statblock> fi ;");
}
else if (lookahead.Value == "for")
{
error |= !Match(p, "for");
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
si2 = new SemanticInfo();
error |= !NTF_Statement(p, si2);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
si3 = new SemanticInfo();
error |= !NTF_Expr(p, si3);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
si4 = new SemanticInfo();
error |= !NTF_Statement(p, si4);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
si5 = new SemanticInfo();
error |= !NTF_StatBlock(p, si5);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
{
// init
si.Code.Append(si2.Code);
// add the label
string j1 = GetNewJumpLabel();
si.Code.AppendLine(j1 + " nop");
// test
si.Code.Append(si3.Code);
string j2 = GetNewJumpLabel();
si.Code.AppendLine("addi r2,r14," + si3.Offset + "\nlw r1,stack(r2)\nbz r1," + j2);
// statements and increment
si.Code.Append(si5.Code);
si.Code.Append(si4.Code);
// jump back to the test
si.Code.AppendLine("j " + j1);
// exit label
si.Code.AppendLine(j2 + " nop");
}
if (!error && p == 1)
Log(LogType.Parse, "<statement> ::= for ( <statement> ; <expr> ; <statement> ) <statblock> ;");
}
else if (lookahead.Value == "cin")
{
error |= !Match(p, "cin");
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
si2 = new SemanticInfo();
error |= !NTF_Variable(p, si2);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
{
int[] tmp = CompilerStack.Peek().GenerateBackupRegisters(si.Code);
si.Code.Append("jl r15,getint\naddi r2,r14," + si2.Offset + "\nsw stack(r2),r1\n");
CompilerStack.Peek().GenerateRestoreRegisters(si.Code, tmp);
}
if (!error && p == 1)
Log(LogType.Parse, "<statement> ::= cin ( <variable> ) ;");
}
else if (lookahead.Value == "cout")
{
error |= !Match(p, "cout");
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
si2 = new SemanticInfo();
error |= !NTF_Expr(p, si2);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
{
// append si2 and load the temp register into r1 before calling cout
si.Code.Append(si2.Code);
int[] tmp = CompilerStack.Peek().GenerateBackupRegisters(si.Code);
si.Code.Append("addi r2,r14," + si2.Offset + "\nlw r1,stack(r2)\n");
si.Code.Append("jl r15,putint\n");
CompilerStack.Peek().GenerateRestoreRegisters(si.Code, tmp);
}
if (!error && p == 1)
Log(LogType.Parse, "<statement> ::= cout ( <expr> ) ;");
}
else if (lookahead.Value == "return")
{
error |= !Match(p, "return");
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
si2 = new SemanticInfo();
error |= !NTF_Expr(p, si2);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 2)
{
si.Code.Append(si2.Code);
// store the return in r1
// make sure the return type matches
SymbolTable.Information info = CurrentScope.Parent.Find(CurrentScope.ID, false);
if (info.Properties["function_type"] as string != si2.Type)
{
error = true;
SemanticErrorWrongReturnTypeExpected
(si.Name, si2.Type, info.Properties["function_type"] as string);
}
else
{
// copy it in r1
si.Code.Append("addi r2,r14," + si2.Offset + "\nlw r1,stack(r2)\njr r15\n");
}
}
if (!error && p == 1)
Log(LogType.Parse, "<statement> ::= return ( <expr> ) ;");
}
else
error = true;
return !error;
}
/// <summary>
/// The main function. Runs the parser over the stream and
/// returns whether or not the stream is valid.
/// </summary>
/// <returns>A bool indicating whether or not the stream is valid syntactically</returns>
public bool Parse()
{
// first parse the program
// phase 1
CompilerStack.Clear();
CompilerStack.Push(new StackFrame(this));
lexer.Reset();
lookahead = lexer.GetNextToken();
SemanticInfo si = new SemanticInfo();
bool ok1 = NTF_Prog(1, si) && Match(1, Lexer.Token.TokenType.EndOfFile);
ComputeClassSizes();
// phase 2
CompilerStack.Clear();
CompilerStack.Push(new StackFrame(this));
si = new SemanticInfo();
lexer.Reset();
lookahead = lexer.GetNextToken();
bool ok2 = NTF_Prog(2, si) && Match(2, Lexer.Token.TokenType.EndOfFile);
si.Code.Insert(0, "stack res 5000\nalign\n");
si.Code.Append(
@"
putint align
add r2,r0,r0 % Initialize buffer's index i
cge r3,r1,r0 % True if N >= 0
bnz r3,putint1 % Branch if True (N >= 0)
sub r1,r0,r1 % N = -N
putint1 modi r4,r1,10 % Rightmost digit
addi r4,r4,48 % Convert to ch
divi r1,r1,10 % Truncate rightmost digit
sb putint9(r2),r4 % Store ch in buffer
addi r2,r2,1 % i++
bnz r1,putint1 % Loop if not finished
bnz r3,putint2 % Branch if True (N >= 0)
addi r3,r0,45
sb putint9(r2),r3 % Store '-' in buffer
addi r2,r2,1 % i++
add r1,r0,r0 % Initialize output register (r1 = 0)
putint2 subi r2,r2,1 % i--
lb r1,putint9(r2) % Load ch from buffer
putc r1 % Output ch
bnz r2,putint2 % Loop if not finished
addi r1,r0,13 % load new line
putc r1 % print it
addi r1,r0,10 % new feed thingie
putc r1
jr r15 % return to the caller
putint9 res 12 % loacl buffer (12 bytes)
align
getint add r1,r0,r0 % n := 0 (result)
add r2,r0,r0 % c := 0 (character)
add r3,r0,r0 % s := 0 (sign)
getint1 getc r2 % read c
ceqi r4,r2,32
bnz r4,getint1 % skip blanks
ceqi r4,r2,43
bnz r4,getint2 % branch if c is '+'
ceqi r4,r2,45
bz r4,getint3 % branch if c is not '-'
addi r3,r0,1 % s := 1 (number is negative)
getint2 getc r2 % read c
getint3 ceqi r4,r2,10
bnz r4,getint5 % branch if c is \n
cgei r4,r2,48
bz r4,getint4 % c < 0
clei r4,r2,57
bz r4,getint4 % c > 9
muli r1,r1,10 % n := 10 * n
add r1,r1,r2 % n := n + c
subi r1,r1,48 % n := n - '0'
j getint2
getint4 addi r2,r0,63 % c := '?'
putc r2 % write c
j getint % Try again
getint5 bz r3,getint6 % branch if s = 0 (number is positive)
sub r1,r0,r1 % n := -n
getint6 jr r15 % return
");
Log(LogType.Code, si.Code.ToString());
// then write out the debug information
Log(LogType.SymbolTable, Global.ToString());
foreach (string error in Errors)
Log(LogType.Error, error);
foreach (string warning in Warnings)
Log(LogType.Warning, warning);
// and flush the streams
foreach (TextWriter tw in Output.Values)
tw.Flush();
return ok1 && ok2;
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///check semantics al StartIndex
StartIndex.CheckSemantic(symbolTable, errors);
///check semantics al EndIndex
EndIndex.CheckSemantic(symbolTable, errors);
///si StartIndex no evaluó de error
if (!Object.Equals(StartIndex.NodeInfo, SemanticInfo.SemanticError))
{
///la expresión de StartIndex tiene que ser compatible con 'int'
if (!StartIndex.NodeInfo.BuiltInType.IsCompatibleWith(BuiltInType.Int))
{
errors.Add(new CompileError
{
Line = StartIndex.Line,
Column = StartIndex.CharPositionInLine,
ErrorMessage = string.Format("Cannot implicitly convert type '{0}' to 'int'", StartIndex.NodeInfo.Type.Name),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
///si EndIndex no evaluó de error
if (!Object.Equals(EndIndex.NodeInfo, SemanticInfo.SemanticError))
{
///la expresión de EndIndex tiene que ser compatible con 'int'
if (!EndIndex.NodeInfo.BuiltInType.IsCompatibleWith(BuiltInType.Int))
{
errors.Add(new CompileError
{
Line = EndIndex.Line,
Column = EndIndex.CharPositionInLine,
ErrorMessage = string.Format("Cannot implicitly convert type '{0}' to 'int'", EndIndex.NodeInfo.Type.Name),
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
SemanticInfo loopVarInfo;
///no puede haber otra variable con el mismo nombre que este
if (symbolTable.GetDefinedVariableDeep(LoopVariable, out loopVarInfo))
{
errors.Add(new CompileError
{
Line = GetChild(0).Line,
Column = GetChild(0).CharPositionInLine,
ErrorMessage = string.Format("A local variable named '{0}' cannot be declared in this scope because it would give a different meaning to'{1}', which is already used in a 'parent or current' scope to denote something else", LoopVariable, LoopVariable),
Kind = ErrorKind.Semantic
});
}
///creamos un nuevo scope
symbolTable.InitNewScope();
///agregamos la variable de iteración al scope actual
SemanticInfo loopVariable = new SemanticInfo
{
Name = LoopVariable,
ElementKind = SymbolKind.Variable,
IsReadOnly = true, //ponemos la variable como readonly
BuiltInType = BuiltInType.Int,
Type = SemanticInfo.Int
};
symbolTable.InsertSymbol(loopVariable);
///check semantics al ForBody
ForBody.CheckSemantic(symbolTable, errors);
///aquí concluye el scope que crea el for
symbolTable.CloseCurrentScope();
///si el ForBody evalúa de error este también
if (Object.Equals(ForBody.NodeInfo, SemanticInfo.SemanticError))
{
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
return;
}
///seteamos la información del NodeInfo
NodeInfo.BuiltInType = BuiltInType.Void;
NodeInfo.Type = SemanticInfo.Void;
///el ForBody no puede retornar valor
if (ForBody.NodeInfo.BuiltInType.IsReturnType())
{
errors.Add(new CompileError
{
Line = ForBody.Line,
Column = ForBody.CharPositionInLine,
ErrorMessage = "Body of control instruction 'for' cannot return value",
Kind = ErrorKind.Semantic
});
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
}
// <expr2> ::= e | relop <arithexpr>
protected bool NTF_Expr2(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Comparison,
Lexer.Token.TokenType.Semicolon, Lexer.Token.TokenType.CloseBracket);
// first(<expr2>)=relop
if (lookahead.Type == Lexer.Token.TokenType.Comparison)
{
string op = lookahead.Value;
if (op == "<") op = "clt";
else if (op == "<=") op = "cle";
else if (op == ">") op = "cgt";
else if (op == ">=") op = "cge";
else if (op == "==") op = "ceq";
else if (op == "<>") op = "cne";
error |= !Match(p, Lexer.Token.TokenType.Comparison);
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_ArithExpr(p, si2);
if (p == 2)
{
si.Code.Append(si2.Code);
si.Code.Append("addi r3,r14," + si.Offset + "\nlw r1,stack(r3)\n" +
"addi r3,r14," + si2.Offset + "\nlw r2,stack(r3)\n" + op + " r1,r1,r2\n");
CompilerStack.Peek().SafeFreeTemp(si.Offset);
CompilerStack.Peek().SafeFreeTemp(si2.Offset);
int tmp = CompilerStack.Peek().RequestTemp() + CompilerStack.Peek().GetTotalRealOffset();
si.Code.Append("addi r2,r14," + tmp + "\nsw stack(r2),r1\n");
si.Offset = tmp;
}
if (!error && p == 1)
Log(LogType.Parse, "<expr2> ::= relop <arithexpr>");
}
// follow(<expr2>)=follow(<expr>)=;+)
else if (lookahead.Type == Lexer.Token.TokenType.Semicolon || lookahead.Type == Lexer.Token.TokenType.CloseBracket)
{
if (p == 1)
Log(LogType.Parse, "<expr2> ::= e");
}
else
error = true;
return !error;
}
// <sign> ::= + | -
protected bool NTF_Sign(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "+", "-",
Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.Number, Lexer.Token.TokenType.OpenBracket,
Lexer.Token.TokenType.Not);
if (lookahead.Value == "+")
{
error |= !Match(p, "+");
if (!error && p == 1)
Log(LogType.Parse, "<sign> ::= +");
}
else
{
error |= !Match(p, "-");
// TODO: fix unary -
if (p == 2)
SemanticError("unary - not working yet");
if (!error && p == 1)
Log(LogType.Parse, "<sign> ::= -");
}
return false;
}
// <factor> ::= <idnest> <factor2>
// | num
// | ( <expr> )
// | ! <factor>
protected bool NTF_Factor(int p, SemanticInfo si)
{
bool error = SkipErrors(p, Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.Number, Lexer.Token.TokenType.OpenBracket,
Lexer.Token.TokenType.Not, Lexer.Token.TokenType.Multiplicative, Lexer.Token.TokenType.Comparison,
Lexer.Token.TokenType.Additive, Lexer.Token.TokenType.Comma, Lexer.Token.TokenType.CloseBracket,
Lexer.Token.TokenType.Semicolon);
// first(<idneststar>)=id
if (lookahead.Type == Lexer.Token.TokenType.Identifier)
{
error |= !NTF_IdNest(p, si);
error |= !NTF_Factor2(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<factor> ::= <idneststar> id <factor2>");
}
else if (lookahead.Type == Lexer.Token.TokenType.Number)
{
if (p == 2)
{
// load the number
si.Name = lookahead.Value;
si.Type = lookahead.Value.IndexOf('.') >= 0 ? "float" : "int";
// TODO: make it work with floats
si.Offset = CompilerStack.Peek().GetTotalRealOffset() + CompilerStack.Peek().RequestTemp();
si.Code.Append("addi r1,r0," + lookahead.Value + "\naddi r2,r14," + si.Offset + "\nsw stack(r2),r1\n");
}
error |= !Match(p, Lexer.Token.TokenType.Number);
if (!error && p == 1)
Log(LogType.Parse, "<factor> ::= num");
}
else if (lookahead.Type == Lexer.Token.TokenType.OpenBracket)
{
error |= !Match(p, Lexer.Token.TokenType.OpenBracket);
error |= !NTF_Expr(p, si);
error |= !Match(p, Lexer.Token.TokenType.CloseBracket);
if (!error && p == 1)
Log(LogType.Parse, "<factor> ::= ( <expr> )");
}
else if (lookahead.Type == Lexer.Token.TokenType.Not)
{
error |= !Match(p, Lexer.Token.TokenType.Not);
SemanticInfo si2 = new SemanticInfo();
error |= !NTF_Factor(p, si2);
if (p == 2)
{
si.Code.Append(si2.Code);
si.Code.Append("addi r2,r14," + si2.Offset + "\nlw r1,stack(r2)\nnot r1,r1\n");
CompilerStack.Peek().SafeFreeTemp(si2.Offset);
string jmp_zero = GetNewJumpLabel();
si.Code.Append("bz r1," + jmp_zero + "\naddi r1,r0,1\n" + jmp_zero + " nop\n");
si.Offset = CompilerStack.Peek().RequestTemp();
si.Code.Append("addi r2,r14," + si.Offset + "\nsw stack(r2),r1\n");
}
if (!error && p == 1)
Log(LogType.Parse, "<factor> ::= ! <factor>");
}
else
error = true;
return !error;
}
// <prog> ::= <classdeclstar><progbody>
protected bool NTF_Prog(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "class", "program", Lexer.Token.TokenType.EndOfFile);
error |= !NTF_ClassDeclStar(p, si);
error |= !NTF_ProgBody(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<prog> ::= <classdeclstar><progbody>");
return !error;
}
public override void CheckSemantic(SymbolTable symbolTable, List <CompileError> errors)
{
///la instrucción let-in-end genera un nuevo scope
symbolTable.InitNewScope();
#region CheckSemantic_of_Declarations_List
DeclarationNode currentDeclaration;
DeclarationType previousDeclarationType = DeclarationType.NONE;
List <DeclarationNode> pendingDeclarations = new List <DeclarationNode>();
///chequeamos la semántica de C/U de las declaraciones
for (int i = 0; i < LetDeclarationCount; i++)
{
currentDeclaration = GetLetDeclarationAt(i);
if (GetDeclarationType(currentDeclaration) != previousDeclarationType && pendingDeclarations.Count > 0)
{
CommitPendingDeclarations(symbolTable, errors, pendingDeclarations);
pendingDeclarations.Clear();
}
if (GetDeclarationType(currentDeclaration) == DeclarationType.VARIABLE)
{
currentDeclaration.CheckSemantic(symbolTable, errors);
}
else
{
pendingDeclarations.Add(currentDeclaration);
}
previousDeclarationType = GetDeclarationType(currentDeclaration);
}
///chequeamos el último bloque
if (pendingDeclarations.Count > 0)
{
CommitPendingDeclarations(symbolTable, errors, pendingDeclarations);
pendingDeclarations.Clear();
}
#endregion
///chequeamos la semántica de ExpressionSequence
ExpressionSequence.CheckSemantic(symbolTable, errors);
///si el ExpressionSequence evalúa de error, este también
if (Object.Equals(ExpressionSequence.NodeInfo, SemanticInfo.SemanticError))
{
///el nodo evalúa de error
NodeInfo = SemanticInfo.SemanticError;
}
///el scope de let-in-end termina en el end
symbolTable.CloseCurrentScope();
///si este no evaluó de error
if (!Object.Equals(NodeInfo, SemanticInfo.SemanticError))
{
NodeInfo = new SemanticInfo
{
Name = SemanticInfo.NoName,
BuiltInType = ExpressionSequence.NodeInfo.BuiltInType,
ElementKind = SymbolKind.NoSymbol,
Type = ExpressionSequence.NodeInfo.Type,
ElementsType = ExpressionSequence.NodeInfo.ElementsType,
Fields = ExpressionSequence.NodeInfo.Fields,
//added
ILType = ExpressionSequence.NodeInfo.ILType
};
}
}
private static SemanticInfo ExtractSemanticInfo(Type modelType)
{
SemanticInfo semanticInfo = new SemanticInfo();
// Built-in semantic type mapping
string bareTypeName = modelType.Name.Split('`')[0]; // Type name without generic type parameters (if any)
semanticInfo.MappedSemanticTypes.Add(SemanticMapping.GetQualifiedTypeName(bareTypeName));
// Extract semantic info from SemanticEntity attributes on the Model Type.
foreach (SemanticEntityAttribute attribute in modelType.GetCustomAttributes(true).Where(a => a is SemanticEntityAttribute))
{
semanticInfo.MappedSemanticTypes.Add(SemanticMapping.GetQualifiedTypeName(attribute.EntityName, attribute.Vocab));
if (!attribute.Public || string.IsNullOrEmpty(attribute.Prefix))
continue;
string prefix = attribute.Prefix;
string registeredVocab;
if (semanticInfo.PrefixMappings.TryGetValue(prefix, out registeredVocab))
{
// Prefix mapping already exists; must match.
if (attribute.Vocab != registeredVocab)
{
throw new DxaException(
string.Format("Attempt to use semantic prefix '{0}' for vocabulary '{1}', but is is already used for vocabulary '{2}",
prefix, attribute.Vocab, registeredVocab)
);
}
}
else
{
semanticInfo.PrefixMappings.Add(prefix, attribute.Vocab);
}
semanticInfo.PublicSemanticTypes.Add(String.Format("{0}:{1}", prefix, attribute.EntityName));
}
// Extract semantic info from SemanticEntity attributes on the Model Type's properties
foreach (MemberInfo memberInfo in modelType.GetMembers(BindingFlags.Public | BindingFlags.Instance))
{
foreach (SemanticPropertyAttribute attribute in memberInfo.GetCustomAttributes(true).Where(a => a is SemanticPropertyAttribute))
{
if (string.IsNullOrEmpty(attribute.PropertyName))
{
// Skip properties without name.
continue;
}
string[] semanticPropertyNameParts = attribute.PropertyName.Split(':');
if (semanticPropertyNameParts.Length < 2)
{
// Skip property names without prefix.
continue;
}
string prefix = semanticPropertyNameParts[0];
if (!semanticInfo.PrefixMappings.ContainsKey(prefix))
{
// Skip property names with prefix which is not declared as public prefix on the type.
continue;
}
IList<string> semanticPropertyNames;
if (!semanticInfo.SemanticProperties.TryGetValue(memberInfo.Name, out semanticPropertyNames))
{
semanticPropertyNames = new List<string>();
semanticInfo.SemanticProperties.Add(memberInfo.Name, semanticPropertyNames);
}
semanticPropertyNames.Add(attribute.PropertyName);
}
}
return semanticInfo;
}
// <type> ::= int | float | id
protected bool NTF_Type(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "int", "float", Lexer.Token.TokenType.Identifier);
if (lookahead.Value == "int")
{
si.Type = "int";
error |= !Match(p, "int");
if (!error && p == 1)
Log(LogType.Parse, "<type> ::= int");
}
else if (lookahead.Value == "float")
{
si.Type = "float";
error |= !Match(p, "float");
if (!error && p == 1)
Log(LogType.Parse, "<type> ::= float");
}
else if (lookahead.Type == Lexer.Token.TokenType.Identifier)
{
si.Type = lookahead.Value;
error |= !Match(p, Lexer.Token.TokenType.Identifier);
if (!error && p == 1)
Log(LogType.Parse, "<type> ::= id");
}
return !error;
}
// <definitionstar> ::= e | <definition> <definitionstar>
protected bool NTF_DefinitionStar(int p, SemanticInfo si)
{
bool error = SkipErrors(p, "int", "float", Lexer.Token.TokenType.Identifier, Lexer.Token.TokenType.CloseBrace,
Lexer.Token.TokenType.EndOfFile);
if (lookahead.Value == "int" || lookahead.Value == "float" || lookahead.Type == Lexer.Token.TokenType.Identifier)
{
error |= !NTF_Definition(p, si);
error |= !NTF_DefinitionStar(p, si);
if (!error && p == 1)
Log(LogType.Parse, "<definitionstar> ::= <definition> <definitionstar>");
}
// follow=}+$
else if (lookahead.Type == Lexer.Token.TokenType.EndOfFile || lookahead.Type == Lexer.Token.TokenType.CloseBrace)
{
if (p == 1)
Log(LogType.Parse, "<definitionstar> ::= e");
}
else
error = true;
return !error;
}
// <typedecl> ::= <type> id <arraystar>;
protected bool NTF_TypeDecl(int p)
{
bool error = SkipErrors(p, "int", "float", Lexer.Token.TokenType.Identifier,
"if", "cin", "cout", "return", "for", Lexer.Token.TokenType.CloseBrace);
SemanticInfo si = new SemanticInfo();
error |= !NTF_Type(p, si);
si.Name = lookahead.Value;
error |= !Match(p, Lexer.Token.TokenType.Identifier);
error |= !NTF_ArrayStar(p, si);
error |= !Match(p, Lexer.Token.TokenType.Semicolon);
if (p == 1)
{
SymbolTable.Information info;
if ((info = CurrentScope.Find(si.Name, false)) != null)
SemanticErrorSymbolAlreadyDefined(si.Name);
else
{
info = CurrentScope.Add(si.Name);
info.Kind = SymbolTable.Information.EKind.Variable;
info.Properties.Add("variable_type", si.Type);
info.Properties.Add("variable_arrayindices", si.ArrayIndices.ToArray());
// TODO: account for objects bigger than 4 (word)
//info.Properties.Add("variable_offset", CompilerStack.Peek().GetTotalRealOffset());
}
}
if (!error && p == 1)
Log(LogType.Parse, "<typedecl> ::= <type> id <arraystar>;");
return !error;
}