/// <summary>
/// Compiles the current syntax tree into a compilation result.
/// </summary>
/// <returns>An emit result.</returns>
public EmitResult Emit()
{
var syntaxDiagnostics = SyntaxTree.Diagnostics.Concat(GlobalScope.Diagnostics).ToImmutableArray();
if (syntaxDiagnostics.Any())
{
return(new EmitResult(success: false, syntaxDiagnostics));
}
var program = Binder.BindProgram(GlobalScope);
if (program.Diagnostics.Any())
{
return(new EmitResult(success: false, program.Diagnostics.ToImmutableArray()));
}
var emitDiagnostics = EmitAssembly(program);
if (emitDiagnostics.Any())
{
return(new EmitResult(success: false, emitDiagnostics));
}
return(new EmitResult(success: true, diagnostics: ImmutableArray <Diagnostic> .Empty));
}
/// <summary>
/// Evaluates the current compilation provided a symbol table with actual values.
/// </summary>
/// <param name="variables">The symbol table with actual values.</param>
/// <returns>An evaluation result.</returns>
public EvaluationResult Evaluate(Dictionary <VariableSymbol, object> variables)
{
var diagnostics = SyntaxTree.Diagnostics.Concat(GlobalScope.Diagnostics).ToImmutableArray();
if (diagnostics.Any())
{
return(new EvaluationResult(diagnostics, null));
}
var program = Binder.BindProgram(GlobalScope);
var appPath = Environment.GetCommandLineArgs()[0];
var appDirectory = Path.GetDirectoryName(appPath);
var cfgPath = Path.Combine(appDirectory, "cfg.dot");
var cfgStatement = !program.Statement.Statements.Any() && program.Functions.Any()
? program.Functions.Last().Value
: program.Statement;
var cfg = ControlFlowGraph.Create(cfgStatement);
using (var streamWriter = new StreamWriter(cfgPath))
{
cfg.WriteTo(streamWriter);
}
if (program.Diagnostics.Any())
{
return(new EvaluationResult(program.Diagnostics.ToImmutableArray(), null));
}
var evaluator = new Evaluator(program, variables);
var value = evaluator.Evaluate();
return(new EvaluationResult(ImmutableArray <Diagnostic> .Empty, value));
}
/// <summary>
/// Emits a tree for this program to the specified writer.
/// </summary>
/// <param name="writer">The writer.</param>
public void EmitTree(TextWriter writer)
{
var program = Binder.BindProgram(GlobalScope);
if (program.Statement.Statements.Any())
{
program.Statement.WriteTo(writer);
}
else
{
foreach (var functionBody in program.Functions)
{
if (!GlobalScope.Functions.Contains(functionBody.Key))
{
continue;
}
functionBody.Key.WriteTo(writer);
functionBody.Value.WriteTo(writer);
}
}
}