// Given a bunch of raw text, load all nodes that were inside it.
// You can call this multiple times to append to the collection of nodes,
// but note that new nodes will replace older ones with the same name.
// Returns the number of nodes that were loaded.
public Program Load(string text, Library library, string fileName, Program includeProgram, bool showTokens, bool showParseTree, string onlyConsiderNode, NodeFormat format, bool experimentalMode = false)
{
if (format == NodeFormat.Unknown)
{
format = GetFormatFromFileName(fileName);
}
// currently experimental node can only be used on yarn.txt yarn files and single nodes
if (experimentalMode && (format == NodeFormat.Text || format == NodeFormat.SingleNodeText))
{
// this isn't the greatest...
if (format == NodeFormat.SingleNodeText)
{
// it is just the body
// need to add a dummy header and body delimiters
StringBuilder builder = new StringBuilder();
builder.Append("title:Start\n");
builder.Append("---\n");
builder.Append(text);
builder.Append("\n===\n");
text = builder.ToString();
}
string inputString = preprocessor(text);
ICharStream input = CharStreams.fromstring(inputString);
YarnSpinnerLexer lexer = new YarnSpinnerLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
YarnSpinnerParser parser = new YarnSpinnerParser(tokens);
// turning off the normal error listener and using ours
parser.RemoveErrorListeners();
parser.AddErrorListener(ErrorListener.Instance);
IParseTree tree = parser.dialogue();
AntlrCompiler antlrcompiler = new AntlrCompiler(library);
antlrcompiler.Compile(tree);
// merging in the other program if requested
if (includeProgram != null)
{
antlrcompiler.program.Include(includeProgram);
}
return(antlrcompiler.program);
}
else
{
// The final parsed nodes that were in the file we were given
Dictionary <string, Yarn.Parser.Node> nodes = new Dictionary <string, Parser.Node>();
// Load the raw data and get the array of node title-text pairs
var nodeInfos = GetNodesFromText(text, format);
int nodesLoaded = 0;
foreach (NodeInfo nodeInfo in nodeInfos)
{
if (onlyConsiderNode != null && nodeInfo.title != onlyConsiderNode)
{
continue;
}
// Attempt to parse every node; log if we encounter any errors
#if CATCH_EXCEPTIONS
try
{
#endif
if (nodes.ContainsKey(nodeInfo.title))
{
throw new InvalidOperationException("Attempted to load a node called " +
nodeInfo.title + ", but a node with that name has already been loaded!");
}
var lexer = new Lexer();
var tokens = lexer.Tokenise(nodeInfo.title, nodeInfo.body);
if (showTokens)
{
PrintTokenList(tokens);
}
var node = new Parser(tokens, library).Parse();
// If this node is tagged "rawText", then preserve its source
if (string.IsNullOrEmpty(nodeInfo.tags) == false &&
nodeInfo.tags.Contains("rawText"))
{
node.source = nodeInfo.body;
}
node.name = nodeInfo.title;
node.nodeTags = nodeInfo.tagsList;
if (showParseTree)
{
PrintParseTree(node);
}
nodes[nodeInfo.title] = node;
nodesLoaded++;
#if CATCH_EXCEPTIONS
}
catch (Yarn.TokeniserException t)
{
// Add file information
var message = string.Format("In file {0}: Error reading node {1}: {2}", fileName, nodeInfo.title, t.Message);
throw new Yarn.TokeniserException(message);
}
catch (Yarn.ParseException p)
{
var message = string.Format("In file {0}: Error parsing node {1}: {2}", fileName, nodeInfo.title, p.Message);
throw new Yarn.ParseException(message);
}
catch (InvalidOperationException e)
{
var message = string.Format("In file {0}: Error reading node {1}: {2}", fileName, nodeInfo.title, e.Message);
throw new InvalidOperationException(message);
}
#endif
}
var compiler = new Yarn.Compiler(fileName);
foreach (var node in nodes)
{
compiler.CompileNode(node.Value);
}
if (includeProgram != null)
{
compiler.program.Include(includeProgram);
}
return(compiler.program);
}
}