/// <summary>Initializes a new instance of the <see cref="Parser"/> class.</summary>
/// <param name="globalState"><see cref="DynamicRuntimeState"/> for the parse</param>
/// <param name="diagnostics">Diagnostic representations to generate when parsing</param>
public Parser(DynamicRuntimeState globalState
, DiagnosticRepresentations diagnostics
)
{
GlobalState = globalState.ValidateNotNull(nameof(globalState));
Diagnostics = diagnostics;
}
public void Run(TextReader input, DiagnosticRepresentations diagnostics = DiagnosticRepresentations.None)
{
var parser = new Parser(LanguageFeatureLevel, diagnostics);
using var generator = CreateGenerator(parser.GlobalState);
ShowPrompt(ReadyState.StartExpression);
// Create sequence of parsed AST RootNodes to feed the REPL loop
var replSeq = from stmt in input.ToStatements(ShowPrompt)
let node = parser.Parse(stmt)
where !ErrorLogger.CheckAndShowParseErrors(node)
select node;
foreach (IAstNode node in replSeq)
{
try
{
var result = generator.Generate(node);
if (result.HasValue)
{
ShowResults(result.Value !);
}
}
catch (CodeGeneratorException ex)
{
// This is an internal error that is not recoverable.
// Show the error and stop additional processing
ErrorLogger.ShowError(ex.ToString( ));
break;
}
}
}
/// <summary>Initializes a new instance of the <see cref="Parser"/> class.</summary>
/// <param name="globalState"><see cref="DynamicRuntimeState"/> for the parse</param>
/// <param name="diagnostics">Diagnostic representations to generate when parsing</param>
/// <param name="lexErrorListener">Error listener for Lexer errors</param>
/// <param name="parseErrorListener">Error listener for parer errors</param>
public Parser(DynamicRuntimeState globalState
, DiagnosticRepresentations diagnostics
, IAntlrErrorListener <int> lexErrorListener
, IAntlrErrorListener <IToken> parseErrorListener
)
{
GlobalState = globalState.ValidateNotNull(nameof(globalState));
Diagnostics = diagnostics;
LexErrorListener = lexErrorListener;
ParseErrorListener = parseErrorListener;
ErrorStrategy = new ReplErrorStrategy( );
}
/// <summary>Initializes a new instance of the <see cref="Parser"/> class.</summary>
/// <param name="level"><see cref="LanguageLevel"/> for the parser</param>
/// <param name="listener">Combined error listener for lexer and parser errors</param>
/// <param name="diagnostics">Diagnostic representations to generate when parsing</param>
public Parser(LanguageLevel level, IUnifiedErrorListener listener, DiagnosticRepresentations diagnostics = DiagnosticRepresentations.None)
: this(new DynamicRuntimeState(level), diagnostics, listener, listener)
{
}
/// <summary>Initializes a new instance of the <see cref="Parser"/> class configured for the specified language level</summary>
/// <param name="level"><see cref="LanguageLevel"/> for the parser</param>
/// <param name="diagnostics">Diagnostic representations to generate when parsing</param>
public Parser(LanguageLevel level, DiagnosticRepresentations diagnostics = DiagnosticRepresentations.None)
: this(level, new FormattedConsoleErrorListener( ), diagnostics)
{
}
/// <summary>Initializes a new instance of the <see cref="Parser"/> class.</summary>
/// <param name="level"><see cref="LanguageLevel"/> for the parser</param>
/// <param name="diagnostics">Diagnostic representations to generate when parsing</param>
public Parser(LanguageLevel level, DiagnosticRepresentations diagnostics = DiagnosticRepresentations.None)
: this(new DynamicRuntimeState(level), diagnostics)
{
}
