/// <summary>
/// Produces a syntax tree by parsing the source text.
/// </summary>
public static SoalSyntaxTree ParseText(
string text,
SoalParseOptions options = null,
string path = "",
Encoding encoding = null,
CancellationToken cancellationToken = default(CancellationToken))
{
return(ParseText(SourceText.From(text, encoding), options, path, cancellationToken));
}
internal ParsedSyntaxTree(SourceText textOpt, Encoding encodingOpt, SourceHashAlgorithm checksumAlgorithm, string path, SoalParseOptions options, SoalSyntaxNode root, DirectiveStack directives, bool cloneRoot = true)
{
Debug.Assert(root != null);
Debug.Assert(options != null);
Debug.Assert(path != null);
Debug.Assert(textOpt == null || textOpt.Encoding == encodingOpt && textOpt.ChecksumAlgorithm == checksumAlgorithm);
_lazyText = textOpt;
_encodingOpt = encodingOpt ?? textOpt?.Encoding;
_checksumAlgorithm = checksumAlgorithm;
_options = options;
_path = path;
_root = cloneRoot ? new MainSyntax((InternalSyntaxNode)root.Green, this, 0) : root;
_hasCompilationUnitRoot = root.Kind == SoalSyntaxKind.Main;
this.SetDirectiveStack(directives);
}
/// <summary>
/// Creates a new syntax tree from a syntax node.
/// </summary>
public static SoalSyntaxTree Create(SoalSyntaxNode root, SoalParseOptions options = null, string path = "", Encoding encoding = null)
{
if (root == null)
{
throw new ArgumentNullException(nameof(root));
}
var directives = DirectiveStack.Empty;
return(new ParsedSyntaxTree(
textOpt: null,
encodingOpt: encoding,
checksumAlgorithm: SourceHashAlgorithm.Sha1,
path: path,
options: options ?? SoalParseOptions.Default,
root: root,
directives: directives));
}
/// <summary>
/// Produces a syntax tree by parsing the source text.
/// </summary>
public static SoalSyntaxTree ParseText(
SourceText text,
SoalParseOptions options = null,
string path = "",
CancellationToken cancellationToken = default(CancellationToken))
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
options = options ?? SoalParseOptions.Default;
using (var parser = SoalLanguage.Instance.SyntaxFactory.MakeParser(text, options, oldTree: null, changes: null))
{
var compilationUnit = (MainSyntax)parser.Parse().CreateRed();
var tree = new ParsedSyntaxTree(text, text.Encoding, text.ChecksumAlgorithm, path, options, compilationUnit, parser.Directives);
tree.VerifySource();
return(tree);
}
}
