public Package Analyze(
PackageSyntax packageSyntax,
FixedDictionary <string, Package> references)
{
// First pull over all the lexer and parser errors from the compilation units
var diagnostics = AllDiagnostics(packageSyntax);
var scopesBuilder = new LexicalScopesBuilder(diagnostics, packageSyntax, references);
scopesBuilder.BuildScopesInPackage(packageSyntax);
// Make a list of all the member declarations (i.e. not namespaces)
var memberDeclarations = packageSyntax.CompilationUnits
.SelectMany(cu => cu.AllMemberDeclarations).ToFixedList();
// TODO we can't do full type checking without some IL gen and code execution, how to handle that?
// Do type checking
TypeResolver.Check(memberDeclarations, diagnostics);
#if DEBUG
TypeResolutionValidator.Validate(memberDeclarations);
// TODO validate that all ReferencedSymbols lists have a single value non-errored code
#endif
MoveChecker.Check(memberDeclarations, diagnostics);
ShadowChecker.Check(memberDeclarations, diagnostics);
// TODO we need to check definite assignment as part of this
BindingMutabilityChecker.Check(memberDeclarations, diagnostics);
// --------------------------------------------------
// This is where the representation transitions to IR
ControlFlowAnalyzer.BuildGraphs(memberDeclarations);
// --------------------------------------------------
var liveness = LivenessAnalyzer.Analyze(memberDeclarations);
DeleteInserter.Transform(memberDeclarations, liveness);
BorrowChecker.Check(memberDeclarations, diagnostics);
// Build final declaration objects and find the entry point
var declarationBuilder = new DeclarationBuilder();
var declarations = declarationBuilder.Build(memberDeclarations);
var entryPoint = DetermineEntryPoint(declarations, diagnostics);
return(new Package(packageSyntax.Name, diagnostics.Build(), references, declarations, entryPoint));
}