private static BoundScope CreateParentScopes(BoundGlobalScope previous) { // create scopes in the opposite order // submission 3 => submission 2 => submission 1 var stack = new Stack <BoundGlobalScope>(); while (previous != null) { stack.Push(previous); previous = previous.Previous; } BoundScope parent = null; while (stack.Count > 0) { previous = stack.Pop(); var scope = new BoundScope(parent); foreach (var variable in previous.Variables) { scope.TryDeclare(variable); } parent = scope; } return(parent); }
public BoundGlobalScope(BoundGlobalScope previous , ImmutableArray <Diagnostic> diagnostics, ImmutableArray <VariableSymbol> variables, BoundStatement statement) { Previous = previous; Diagnostics = diagnostics; Variables = variables; Statement = statement; }
/// <summary> /// All previous submissions are parent scopes to the current scope /// </summary> /// <param name="previous"></param> /// <param name="syntax"></param> /// <returns></returns> public static BoundGlobalScope BindGlobalScope(BoundGlobalScope previous, CompliationUnitSyntax syntax) { var parentScope = CreateParentScopes(previous); var binder = new Binder(parentScope); var expression = binder.BindStatement(syntax.Statement); var variables = binder._scope.GetDeclaredVariables(); var diagnostics = binder.Diagnostics.ToImmutableArray(); if (previous != null) { diagnostics = diagnostics.InsertRange(0, previous.Diagnostics); } return(new BoundGlobalScope(previous, diagnostics, variables, expression)); }