public void RejectConstVariable(ast.ExprNode node)
{
// Is the lhs a global?
if (node.GetType() != typeof(ast.ExprNodeIdentifier))
return;
// Check it's not a member accessor
var identifier = (ast.ExprNodeIdentifier)node;
if (identifier.Lhs != null)
return;
// Find the symbol and mark it as not a const
var s = currentScope.FindSymbol(identifier.Name);
if (s != null)
{
s.ConstValue = null;
s.ConstAllowed = false;
}
}
public bool OnEnterNode(ast.Node n)
{
// New actual scope (function body or catch clause)
if (n.GetType() == typeof(ast.ExprNodeFunction) || n.GetType() == typeof(ast.CatchClause))
{
SymbolScope currentScope = m_Scopes.Peek();
n.Scope = new SymbolScope(currentScope.Compiler, n, Accessibility.Private);
// Add this function to the parent function's list of nested functions
currentScope.InnerScopes.Add(n.Scope);
n.Scope.OuterScope = currentScope;
// Enter scope
m_Scopes.Push(n.Scope);
// Also create a pseudo scope
EnterPseudoScope(n);
return true;
}
// New pseudo scope (statement body or braced code block)
if (n.GetType() == typeof(ast.CodeBlock) || n.GetType() == typeof(ast.StatementBlock) || n.GetType()==typeof(ast.StatementFor) || n.GetType()==typeof(ast.StatementForIn))
{
// Create pseudo scope
EnterPseudoScope(n);
return true;
}
// Is it an evil?
if (n.GetType() == typeof(ast.StatementWith))
{
m_Scopes.Peek().Compiler.RecordWarning(n.Bookmark, "use of `with` statement prevents local symbol obfuscation of all containing scopes");
m_Scopes.Peek().DefaultAccessibility = Accessibility.Public;
return true;
}
// More evil
if (n.GetType() == typeof(ast.ExprNodeIdentifier))
{
var m = (ast.ExprNodeIdentifier)n;
if (m.Lhs == null && m.Name == "eval")
{
m_Scopes.Peek().Compiler.RecordWarning(n.Bookmark, "use of `eval` prevents local symbol obfuscation of all containing scopes");
m_Scopes.Peek().DefaultAccessibility = Accessibility.Public;
}
return true;
}
// Private member declaration?
if (n.GetType() == typeof(ast.StatementAccessibility))
{
var p = (ast.StatementAccessibility)n;
foreach (var s in p.Specs)
{
m_Scopes.Peek().AddAccessibilitySpec(p.Bookmark, s);
}
}
// Try to guess name of function by assignment in variable declaration
var decl = n as ast.StatementVariableDeclaration;
if (decl != null)
{
foreach (var i in decl.Variables)
{
if (i.InitialValue!=null)
{
var fn = i.InitialValue.RootNode as ast.ExprNodeFunction;
if (fn != null)
{
fn.AssignedToName = i.Name;
}
}
}
}
// Try to guess name of function by assignment
var assignment = n as ast.ExprNodeAssignment;
if (assignment != null)
{
var fn = assignment.Rhs as ast.ExprNodeFunction;
if (fn != null)
{
var id = assignment.Lhs as ast.ExprNodeIdentifier;
if (id!=null)
fn.AssignedToName = id.Name;
}
}
// Try to guess name of function in object literal
var objLiteral = n as ast.ExprNodeObjectLiteral;
if (objLiteral != null)
{
foreach (var i in objLiteral.Values)
{
var fn = i.Value as ast.ExprNodeFunction;
if (fn != null)
{
var id = i.Key as ast.ExprNodeIdentifier;
if (id != null)
{
fn.AssignedToName = id.Name;
}
}
}
}
return true;
}