Stmt ParseClassDecl( )
{
List <Ident> memberVar = new List <Ident>();
var defpos = CurrTokenPos;
Expect(TokenType.Class);
var className = ParseIdent();
var scope = ScopeMgr.OpenClassScope(className.Name, defpos);
Ident parentName = null;
var colonPos = CurrTokenPos;
if (CurrTokenType == TokenType.Colon)
{
Next();
parentName = ParseIdent();
}
Expect(TokenType.LBrace);
var decl = new ClassDeclare(className, parentName, scope, memberVar, defpos);
if (parentName != null)
{
decl.ColonPos = colonPos;
}
className.Symbol = ScopeManager.Declare(decl, ScopeMgr.PackageScope, className.Name, className.DefinePos, SymbolUsage.Class);
while (CurrTokenType != TokenType.RBrace)
{
var param = ParseIdent();
memberVar.Add(param);
ScopeManager.Declare(param, scope, param.Name, param.DefinePos, SymbolUsage.Member);
}
ScopeMgr.CloseScope();
Next();
return(decl);
}
Stmt ParseFuncDecl()
{
var funcPos = CurrTokenPos;
Expect(TokenType.Func);
var scope = ScopeMgr.OpenScope(ScopeType.Function, funcPos);
Ident funcName;
Ident className = null;
var NameA = ParseIdent();
Scope funcAtScope;
if (CurrTokenType == TokenType.Dot)
{
Next();
funcName = ParseIdent();
className = NameA;
funcAtScope = ScopeMgr.GetClassScope(className.Name);
// 主定义文件还未出现， 所以暂时创建空的scope
if (funcAtScope == null)
{
funcAtScope = ScopeMgr.OpenClassScope(className.Name, funcPos);
ScopeMgr.CloseScope();
}
}
else
{
funcAtScope = ScopeMgr.PackageScope;
funcName = NameA;
}
var paramlist = ParseParameters(scope, className != null);
if (CurrTokenType == TokenType.LBrace)
{
var decl = new FuncDeclare(funcName, new FuncType(funcPos, paramlist, scope));
decl.ClassName = className;
funcName.Symbol = ScopeManager.Declare(decl, funcAtScope, funcName.Name, funcName.DefinePos, SymbolUsage.Func);
decl.Body = ParseBody(scope);
decl.BuildRelation();
return(decl);
}
else
{
// 声明已经结束
ScopeMgr.CloseScope();
// 函数前置声明
var decl = new DelegateDeclare(funcName, new FuncType(funcPos, paramlist, scope));
funcName.Symbol = ScopeManager.Declare(decl, ScopeMgr.PackageScope, funcName.Name, funcName.DefinePos, SymbolUsage.Delegate);
return(decl);
}
}