public override void EnterConstant_declaration(CSharpParser.Constant_declarationContext context)
{
Console.WriteLine("Entering constant_declaration context.");
// Getting the current scope parent node:
Node parentNode = ast.GetNode(symbolTable.CurrentScopeNode);
Node.Kind parentKind = parentNode.NodeKind;
// Getting the constants' type:
Type t = TreatTypeContext(context.type_());
// Getting all the modifiers:
Symbol.ModifierFlag modFlags = TreatModTokens();
modifiersTokens.Clear();
modFlags |= Symbol.ModifierFlag.Const;
// Getting the name of the constant(s):
CSharpParser.Constant_declaratorContext[] declarators = context.constant_declarators().constant_declarator();
foreach (CSharpParser.Constant_declaratorContext declarator in declarators)
{
CSharpParser.IdentifierContext idCtx = declarator.identifier();
IToken idToken = idCtx.Start;
// Creating the constant symbol:
if (parentKind == Node.Kind.ClassBody)
{
// Getting the owner class symbol:
ClassSymbol ownerClass = ((ClassType)(parentNode.Type)).Symbol;
AttributeSymbol constantSymbol = new AttributeSymbol(modFlags, ownerClass);
// Creating the constant member node:
Node constMemberNode = new Node(idToken, Node.Kind.MemberVariableDeclaration, t, constantSymbol);
ast.AddNode(constMemberNode);
parentNode.AddChildIndex(ast.NodeIndex(constMemberNode));
// Adding the symbol to the table:
symbolTable.AddSymbol(idToken, constantSymbol);
}
else
{
// Creating a method variable
// Getting the owner method symbol:
MethodSymbol ownerMethod = (MethodSymbol)(symbolTable.FindSymbol(parentNode.Token, ast));
VariableSymbol constantSymbol = new VariableSymbol(modFlags, ownerMethod);
// Creating the constant variable node:
Node constVarNode = new Node(idToken, Node.Kind.MethodVariableDeclaration, t, constantSymbol);
ast.AddNode(constVarNode);
parentNode.AddChildIndex(ast.NodeIndex(constVarNode));
// Adding the symbol to the table:
symbolTable.AddSymbol(idToken, constantSymbol);
}
}
}
public override void EnterClass_definition(CSharpParser.Class_definitionContext context)
{
Console.WriteLine("Entering class_definition context.");
// Getting the current scope node:
Node currentScopeNode = ast.GetNode(symbolTable.CurrentScopeNode);
// Add class symbol to symbol table: parent class, owner class and other informations and add to node data:
// Getting the parent classes:
List <IToken> baseTokens = new List <IToken>(); // Will hold the base class tokens
// Getting the base classes' names identifiers:
CSharpParser.Class_baseContext classBaseCtx = context.class_base();
if (classBaseCtx != null)
{
CSharpParser.Class_typeContext classTypeCtx = classBaseCtx.class_type();
if (classTypeCtx != null)
{
CSharpParser.Namespace_or_type_nameContext typeNameCtx = classTypeCtx.namespace_or_type_name();
if (typeNameCtx != null)
{
CSharpParser.IdentifierContext[] typeIDCtxs = typeNameCtx.identifier();
foreach (CSharpParser.IdentifierContext id in typeIDCtxs)
{
baseTokens.Add(id.Start);
}
}
else
{
baseTokens.Add(typeNameCtx.Start);
}
}
}
// Getting the base classes' symbols:
Symbol[] baseSymbols = symbolTable.FindSymbols(baseTokens.ToArray(), ast);
List <ClassSymbol> baseClassSymbols = new List <ClassSymbol>();
foreach (Symbol bs in baseSymbols)
{
baseClassSymbols.Add((ClassSymbol)bs);
}
// Getting the class' modifiers:
Symbol.ModifierFlag modFlags = TreatModTokens();
modifiersTokens.Clear();
// Creating the class symbol:
ClassSymbol classSymbol = new ClassSymbol(modFlags, baseClassSymbols.ToArray());
// Adding the class node as a child to the current scope's AST node:
Type type = new Type(context.CLASS().Symbol);
Node classNode = new Node(context.CLASS().Symbol, Node.Kind.ClassDefinition, type);
int classNodeIndex = ast.NodeIndex(classNode);
currentScopeNode.AddChildIndex(classNodeIndex);
// Adding the class node:
ast.AddNode(classNode);
// Adding an identifier node as a class node child:
CSharpParser.IdentifierContext idCtx = context.identifier();
IToken idToken = idCtx.Start;
// Adding the class body node as a class node child:
CSharpParser.Class_bodyContext bodyCtx = context.class_body();
ClassType classType = new ClassType(idToken, ClassTag.Class, classSymbol);
symbolTable.AddType(classType);
Node bodyNode = new Node(idToken, Node.Kind.ClassBody, classType);
ast.AddNode(bodyNode);
int bodyNodeIndex = ast.NodeIndex(bodyNode);
classNode.AddChildIndex(bodyNodeIndex);
// Enter scope in the symbol table
symbolTable.EnterScope(bodyNodeIndex);
symbolTable.AddSymbol(idToken, classSymbol);
}
public override void EnterStruct_definition(CSharpParser.Struct_definitionContext context)
{
Console.WriteLine("Entering struct_definition context.");
// Getting the current scope node:
Node currentScopeNode = ast.GetNode(symbolTable.CurrentScopeNode);
// Add class symbol to symbol table: parent class, owner class and other informations and add to node data:
// Getting the parent classes:
List <IToken> interfaceTokens = new List <IToken>(); // Will hold the base class tokens
// Getting the interfaces' names identifiers:
CSharpParser.Struct_interfacesContext interfaces = context.struct_interfaces();
if (interfaces != null)
{
CSharpParser.Interface_type_listContext typeListCtx = interfaces.interface_type_list();
if (typeListCtx != null)
{
CSharpParser.Namespace_or_type_nameContext[] types = typeListCtx.namespace_or_type_name();
foreach (CSharpParser.Namespace_or_type_nameContext name in types)
{
CSharpParser.IdentifierContext[] ids = name.identifier();
foreach (CSharpParser.IdentifierContext id in ids)
{
interfaceTokens.Add(id.Start);
}
}
}
}
// Getting the base classes' symbols:
Symbol[] interfaceSymbols = symbolTable.FindSymbols(interfaceTokens.ToArray(), ast);
List <ClassSymbol> interfaceClassSymbols = new List <ClassSymbol>();
foreach (Symbol bs in interfaceSymbols)
{
interfaceClassSymbols.Add((ClassSymbol)bs);
}
// Getting the class' modifiers:
Symbol.ModifierFlag modFlags = TreatModTokens();
modifiersTokens.Clear();
// Creating the class symbol:
ClassSymbol structSymbol = new ClassSymbol(modFlags, interfaceClassSymbols.ToArray());
// Adding the class node as a child to the current scope's AST node:
Type type = new Type(context.STRUCT().Symbol);
Node structNode = new Node(context.STRUCT().Symbol, Node.Kind.ClassDefinition, type);
int structNodeIndex = ast.NodeIndex(structNode);
currentScopeNode.AddChildIndex(structNodeIndex);
// Adding the struct node:
ast.AddNode(structNode);
// Adding an identifier node as a struct node child:
CSharpParser.IdentifierContext idCtx = context.identifier();
IToken idToken = idCtx.Start;
// Adding the struct body node as a class node child:
CSharpParser.Struct_bodyContext bodyCtx = context.struct_body();
ClassType structType = new ClassType(idToken, ClassTag.Struct, structSymbol);
symbolTable.AddType(structType);
Node bodyNode = new Node(idToken, Node.Kind.ClassBody, structType);
ast.AddNode(bodyNode);
int bodyNodeIndex = ast.NodeIndex(bodyNode);
structNode.AddChildIndex(bodyNodeIndex);
// Enter scope in the symbol table
symbolTable.EnterScope(bodyNodeIndex);
symbolTable.AddSymbol(idToken, structSymbol);
}