/// <summary>
/// Initializes a new instance of the <see cref="SyntacticAnalyzer"/> class with the specified <see cref="LexicalAnalyzer"/>.
/// </summary>
/// <param name="lexical">The lexical analyzer.</param>
public SyntacticAnalyzer(LexicalAnalyzer lexical)
{
if (lexical == null)
{
throw new ArgumentNullException(nameof(lexical));
}
_lexical = lexical;
_symbolTable = new VectorSymbolTable();
_codeGenerator = new CodeGenerator();
}
/// <summary>
/// Compiles the source code.
/// </summary>
/// <returns><see cref="Task"/></returns>
private async Task<bool> CompileAsync()
{
if (string.IsNullOrEmpty(Editor.Text))
{
return false;
}
if (_modificationsCount > 0)
{
if (string.IsNullOrEmpty(_selectedFile))
{
await SaveAsFileAsync();
}
else
{
await SaveFileAsync();
}
}
TokensList.ItemsSource = null;
ErrorListView.ItemsSource = null;
var success = false;
using (LexicalAnalyzer lexical = new LexicalAnalyzer(_selectedFile))
{
string outputFilePath = FileHelper.GetOutputFilePath(Path.GetFileNameWithoutExtension(_selectedFile) + OutputFileExtension);
SyntacticAnalyzer syntactic = new SyntacticAnalyzer(lexical);
CompilationResult compilationResult = await syntactic.DoAnalysisAsync(outputFilePath);
if (compilationResult.Error != null)
{
ErrorListView.ItemsSource = new List<CompilationResultViewModel>
{
new CompilationResultViewModel()
{
Message = compilationResult.Error.Message,
Position = compilationResult.Error.Position
}
};
}
else
{
_currentProgramName = compilationResult.ProgramName;
_outputFile = outputFilePath;
success = true;
ErrorListView.ItemsSource = new List<CompilationResultViewModel>
{
new CompilationResultViewModel()
{
Message = "Compilação sem erros.",
Position = new CodePosition { Line = 0, Column = 0, Index = 0 }
}
};
}
TokensList.ItemsSource = lexical.ReadTokens;
}
int tokensCount = TokensList.Items.Count;
if (tokensCount > 0)
{
TokenGroupBox.Header = tokensCount > 1 ? tokensCount + " tokens" : "1 token";
}
else
{
TokenGroupBox.Header = "Nenhum token";
}
return success;
}
