public virtual Differences VisitStatementSnippet(StatementSnippet snippet1, StatementSnippet snippet2){
Differences differences = new Differences(snippet1, snippet2);
if (snippet1 == null || snippet2 == null){
if (snippet1 != snippet2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
StatementSnippet changes = (StatementSnippet)snippet2.Clone();
StatementSnippet deletions = (StatementSnippet)snippet2.Clone();
StatementSnippet insertions = (StatementSnippet)snippet2.Clone();
if (snippet1.SourceContext.Document == null || snippet2.SourceContext.Document == null){
if (snippet1.SourceContext.Document == snippet2.SourceContext.Document) differences.NumberOfSimilarities++; else differences.NumberOfDifferences++;
}else if (snippet1.SourceContext.Document.Name == snippet2.SourceContext.Document.Name)
differences.NumberOfSimilarities++; else differences.NumberOfDifferences++;
if (differences.NumberOfDifferences == 0){
differences.Changes = null;
differences.Deletions = null;
differences.Insertions = null;
}else{
differences.Changes = changes;
differences.Deletions = deletions;
differences.Insertions = insertions;
}
return differences;
}
public virtual StatementSnippet VisitStatementSnippet(StatementSnippet snippet, StatementSnippet changes, StatementSnippet deletions, StatementSnippet insertions){
this.UpdateSourceContext(snippet, changes);
if (snippet == null) return changes;
if (changes != null){
if (deletions == null || insertions == null)
Debug.Assert(false);
else{
}
}else if (deletions != null)
return null;
return snippet;
}
public virtual StatementSnippet VisitStatementSnippet(StatementSnippet snippet){
return snippet;
}
public override StatementSnippet VisitStatementSnippet(StatementSnippet snippet){
if (snippet == null) return null;
Document doc = snippet.SourceContext.Document;
if (doc == null) return null;
string fileName = doc.Name;
int lineNumber = doc.LineNumber;
DocumentText sourceText = doc.Text;
IParserFactory pf = snippet.ParserFactory;
IParser p;
if (pf == null)
p = this.DefaultParserFactory.CreateParser(fileName, lineNumber, sourceText, this.SymbolTable, this.ErrorNodes, this.Options);
else
p = pf.CreateParser(fileName, lineNumber, sourceText, this.SymbolTable, this.ErrorNodes, this.Options);
if (p == null) return null;
p.ParseStatements(this.CurrentStatementList);
return null;
}
public override StatementSnippet VisitStatementSnippet(StatementSnippet snippet)
{
throw new ApplicationException("unimplemented");
}
public virtual void VisitStatementSnippet(StatementSnippet snippet)
{
}
public override StatementSnippet VisitStatementSnippet(StatementSnippet snippet)
{
if (snippet == null) return null;
return base.VisitStatementSnippet((StatementSnippet)snippet.Clone());
}
public virtual StatementSnippet VisitStatementSnippet(StatementSnippet snippet1, StatementSnippet snippet2)
{
return snippet1;
}
private Statement Translate(CodeSnippetStatement statement){
if (statement == null) return null;
StatementSnippet snippet = new StatementSnippet();
Document doc = null;
if (statement.LinePragma == null)
doc = this.compiler.CreateDocument(null, 1, statement.Value);
else
doc = this.compiler.CreateDocument(statement.LinePragma.FileName, statement.LinePragma.LineNumber, statement.Value);
snippet.SourceContext = new SourceContext(doc, 0, doc.Text.Length);
return snippet;
}
public override StatementSnippet VisitStatementSnippet(StatementSnippet snippet)
{
System.Compiler.Parser p = this.DefaultCompiler.CreateParser(snippet.SourceContext.Document, this.ErrorNodes);
p.ParseStatements(this.CurrentStatementList);
return(null);
}
public override StatementSnippet VisitStatementSnippet(StatementSnippet snippet)
{
throw new ApplicationException("unimplemented");
}
