// TryParse parses the source string and returns a list of errors on failure.
// On success it fills the tree out parameter with the parsed tree.
public static List <IError> TryParse(string source, out Tree tree)
{
// FIXME(an): Add try-catch block & convert to IError,
// since Try* variants are supposed to be exception safe
var lexer = new Lexer();
lexer.Run(source);
var sa = new SyntacticAnalyzer();
tree = sa.Run(lexer.GetTokens());
if (sa.GetErrors().Count > 0)
{
return(sa.GetErrors());
}
var treeWalker = new Walker();
var semanticAnalyzer = new SemanticAnalyzer();
treeWalker.Walk(semanticAnalyzer, tree);
if (semanticAnalyzer.GetErrors().Count > 0)
{
return(semanticAnalyzer.GetErrors());
}
return(new List <IError>());
}
