ProgramNode ParseModule(ModulePath?path, SourceText source, SyntaxContext context)
{
var msg = path != null ? $" with path '{path}'" : string.Empty;
if (!_loading.Add(source.FullPath))
{
throw new ModuleLoadException($"Module{msg} could not be loaded due to circular 'use' declarations.");
}
try
{
if (context.Parses.ContainsKey(source.FullPath))
{
throw new ModuleLoadException($"Module{msg} was already loaded previously.");
}
var lex = LanguageLexer.Lex(source);
var parse = LanguageParser.Parse(lex, SyntaxMode.Normal);
context.AddParse(source.FullPath, parse);
foreach (var diag in lex.Diagnostics)
{
context.AddDiagnostic(diag);
}
foreach (var diag in parse.Diagnostics)
{
context.AddDiagnostic(diag);
}
var analysis = LanguageAnalyzer.Analyze(parse, this, context);
foreach (var diag in analysis.Diagnostics)
{
context.AddDiagnostic(diag);
}
return(analysis.IsSuccess ? (ProgramNode)parse.Tree : throw new ModuleLoadException(
$"Module{msg} failed to load due to syntax and/or semantic errors."));
}
finally
{
_ = _loading.Remove(source.FullPath);
}
}