/// <summary>
/// Extract LG imports from a file parse tree.
/// </summary>
/// <param name="file">LGFile context from antlr parser.</param>
/// <param name="source">text source.</param>
/// <returns>lg template list.</returns>
private static IList <LGImport> ExtractLGImports(LGFileParser.FileContext file, string source = "")
{
return(file == null ? new List <LGImport>() :
file.paragraph()
.Select(x => x.importDefinition())
.Where(x => x != null)
.Select(t => new LGImport(t, source))
.ToList());
}
/// <summary>
/// Extract LG templates from a file parse tree.
/// </summary>
/// <param name="file">LGFile context from antlr parser.</param>
/// <param name="lgfileContent">LGFile content.</param>
/// <param name="source">text source.</param>
/// <returns>lg template list.</returns>
private static IList <LGTemplate> ExtractLGTemplates(LGFileParser.FileContext file, string lgfileContent, string source = "")
{
return(file == null ? new List <LGTemplate>() :
file.paragraph()
.Select(x => x.templateDefinition())
.Where(x => x != null)
.Select(t => new LGTemplate(t, lgfileContent, source))
.ToList());
}
private static IList <Diagnostic> GetInvalidTemplateErrors(LGFileParser.FileContext fileContext, string id)
{
var errorTemplates = fileContext == null ? new List <LGFileParser.ErrorTemplateContext>() :
fileContext.paragraph()
.Select(x => x.errorTemplate())
.Where(x => x != null);
return(errorTemplates.Select(u => BuildDiagnostic("error context.", u, id)).ToList());
}
/// <summary>
/// Extract LG options from the parse tree of a file.
/// </summary>
/// <param name="file">LG file context from ANTLR parser.</param>
/// <returns>Option list.</returns>
private static IList <string> ExtractLGOptions(LGFileParser.FileContext file)
{
return(file == null ? new List <string>() :
file.paragraph()
.Select(x => x.optionsDefinition())
.Where(x => x != null)
.Select(t => ExtractOption(t.GetText()))
.Where(t => !string.IsNullOrEmpty(t))
.ToList());
}
/// <summary>
/// Exit a parse tree produced by <see cref="LGFileParser.file"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitFile([NotNull] LGFileParser.FileContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="LGFileParser.file"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitFile([NotNull] LGFileParser.FileContext context)
{
return(VisitChildren(context));
}