/// <summary>
/// Parses a script from the specified resource.
/// </summary>
/// <param name="context">The <see cref="IMansionContext"/>.</param>
/// <param name="resource">The resource wcich to parse as script.</param>
/// <returns>Returns the parsed script.</returns>
/// <exception cref="ParseScriptException">Thrown when an exception occurres while parsing the script.</exception>
public IExpressionScript Parse(IMansionContext context, IResource resource)
{
// validate arguments
if (context == null)
throw new ArgumentNullException("context");
if (resource == null)
throw new ArgumentNullException("resource");
// open the script
var cacheKey = ResourceCacheKey.Create(resource);
return cachingService.GetOrAdd(
context,
cacheKey,
() =>
{
// get the phrase
string rawPhrase;
using (var resourceStream = resource.OpenForReading())
using (var reader = resourceStream.Reader)
rawPhrase = reader.ReadToEnd();
// let someone else do the heavy lifting
var phrase = ParsePhrase(context, rawPhrase);
// create the cache object
return new CachedPhrase(phrase);
});
}
/// <summary>
/// Opens a template.
/// </summary>
/// <param name="context">The <see cref="IMansionContext"/>.</param>
/// <param name="resource">The resource which to open.</param>
/// <returns>Returns a marker which will close the template automatically.</returns>
public IDisposable Open(IMansionContext context, IResource resource)
{
// validate arguments
if (context == null)
throw new ArgumentNullException("context");
if (resource == null)
throw new ArgumentNullException("resource");
// open the template
var cacheKey = ResourceCacheKey.Create(resource);
var template = cachingService.GetOrAdd(
context,
cacheKey,
() => {
// read the complete template into memory
string rawTemplate;
using (var resourceStream = resource.OpenForReading())
using (var reader = resourceStream.Reader)
rawTemplate = reader.ReadToEnd();
// loop through all the sections
var sections = (from rawSection in sectionTokenizer.Tokenize(context, rawTemplate)
let interpreter = Election<SectionInterpreter, string>.Elect(context, interpreters, rawSection)
select interpreter.Interpret(context, rawSection)
).ToList();
// create the template
var htmlTemplate = new Template(sections, resource.Path);
// create the cached template
return new CachedHtmlTemplate(htmlTemplate);
});
// push the template to the stack
return context.TemplateStack.Push(template);
}
