private IList ConvertToSingleDeclarationStatements(MultipleVariableDeclarationStatement varDecl)
{
IList newStmts = new ArrayList();
int index = 0;
ExpressionCollection initExps = varDecl.InitExpressions;
foreach (Identifier ident in varDecl.Identifiers)
{
// Here we are converting expression from
// x:int, y:long = 1, 2L
// to an AST representation equivalent to
// x:int = 1; y:long = 2L
SingleVariableDeclarationStatement svStmt = new SingleVariableDeclarationStatement(ident);
if (index < initExps.Count)
{
svStmt.InitExp = initExps[index];
EnsureNoPostFixStatement(svStmt.InitExp);
}
index++;
newStmts.Add(svStmt);
}
// We don't need them anymore
initExps.Clear();
return(newStmts);
}
private void ProcessMultipleVariableDeclarationStatement(MultipleVariableDeclarationStatement decl)
{
IList stmts = ConvertToSingleDeclarationStatements(decl);
ReplaceOriginalMultipleVariableDeclarationStatement(decl, stmts);
EnsureTypeDeclarationsBelongsToThisScope(decl, stmts);
}
public virtual bool VisitMultipleVariableDeclarationStatement(MultipleVariableDeclarationStatement varDecl)
{
VisitNodes(varDecl.Identifiers);
// TODO: Decide if we shall visit the InitExpressions as this node is a kind of transient node
return(true);
}
public override bool VisitMultipleVariableDeclarationStatement(MultipleVariableDeclarationStatement varDecl)
{
nodeStack.Push(CurrentNode.Nodes.Add("MultipleVariableDeclarationStatement"));
CurrentNode.Tag = varDecl;
CurrentNode.EnsureVisible();
base.VisitMultipleVariableDeclarationStatement(varDecl);
nodeStack.Pop();
return(true);
}
private void ReplaceOriginalMultipleVariableDeclarationStatement(MultipleVariableDeclarationStatement decl, IList stmts)
{
int index;
// Replace the VariableDeclarationStatement node by a
// (possible) sequence of SingleVariableDeclarationStatement
IStatementContainer stmtContainer = decl.Parent as IStatementContainer;
index = stmtContainer.Statements.IndexOf(decl);
stmtContainer.Statements.RemoveAt(index);
foreach (SingleVariableDeclarationStatement svDecl in stmts)
{
stmtContainer.Statements.Insert(index++, svDecl);
}
}
private void EnsureTypeDeclarationsBelongsToThisScope(MultipleVariableDeclarationStatement varDecl, IList stmts)
{
ISymbolTable namescope = varDecl.Parent.SymbolTable;
System.Diagnostics.Debug.Assert(namescope != null);
foreach (SingleVariableDeclarationStatement typeDecl in stmts)
{
Identifier ident = typeDecl.Identifier;
// Most simple of cases: duplicated declaration
if (namescope.IsDefined(ident.Name))
{
errorReport.Error("TODOFILENAME", typeDecl.Position, "Sorry but '{0}' is already defined.", ident.Name);
continue;
}
ApplyDeclarationRules(ident, namescope, typeDecl, varDecl);
}
}
public override bool VisitMultipleVariableDeclarationStatement(MultipleVariableDeclarationStatement varDecl)
{
ProcessMultipleVariableDeclarationStatement(varDecl);
return(base.VisitMultipleVariableDeclarationStatement(varDecl));
}
public override bool VisitMultipleVariableDeclarationStatement(MultipleVariableDeclarationStatement varDecl)
{
visitedNodes.Add(varDecl);
return(base.VisitMultipleVariableDeclarationStatement(varDecl));
}
