protected internal string Render(object value, string templateScript)
{
try
{
string json = value.ToJson();
StringBuilder script = CreateBaseScript();
script.Append("dust.loadSource(compiledSource);");
script.Append(@"dust.render(templateName, JSON.parse(jsonData), function(err, result){
error = err;
output = result;
})");
EcmaScript.NET.Context ctx = EcmaScript.NET.Context.Enter();
ScriptableObject scope = ctx.InitStandardObjects();
SetParameters(scope);
ScriptableObject.PutProperty(scope, "jsonData", json);
ScriptableObject.PutProperty(scope, "compiledSource", Regex.Unescape(templateScript));
ScriptableObject.PutProperty(scope, "error", null);
ScriptableObject.PutProperty(scope, "output", "");
ctx.EvaluateString(scope, script.ToString(), "render", 0, null);
object error = ScriptableObject.GetProperty(scope, "error");
if (error != null)
{
throw new InvalidOperationException("An error occurred during dust.render: " + error.ToString());
}
string result = ((string)ScriptableObject.GetProperty(scope, "output"));
return(Regex.Unescape(result));
}
catch (Exception ex)
{
string sig = "An error occurred rendering template ({0}) : {1}";
string msg = ex.Message;
this.Exception = Args.Exception <DustException>(sig, Name, msg);
return(string.Format(sig, Name, msg));
}
}
private void SetCompiledScript()
{
try
{
StringBuilder script = CreateBaseScript();
script.Append("compiledTemplate = dust.compile(templateSource, templateName);");
EcmaScript.NET.Context ctx = EcmaScript.NET.Context.Enter();
ScriptableObject scope = ctx.InitStandardObjects();
SetParameters(scope);
ScriptableObject.PutProperty(scope, "compiledTemplate", null);
ctx.EvaluateString(scope, script.ToString(), "Compile", 0, null);
CompiledScript = (string)ScriptableObject.GetProperty(scope, "compiledTemplate");
SetCompiledTemplate();
}
catch (Exception ex)
{
CompiledScript = string.Format("alert('An error occurred compiling {0}: {1}');", Name, ex.Message);
Exception = Args.Exception <DustException>("An error occurred compiling script ({0}) :{1}", ex, Name, ex.Message);
}
}
/// <summary> Evaluate JavaScript source.
///
/// </summary>
/// <param name="cx">the current context
/// </param>
/// <param name="filename">the name of the file to compile, or null
/// for interactive mode.
/// </param>
private void ProcessSource (Context cx, string filename)
{
if (filename == null) {
Console.WriteLine ("EcmaScript.NET v" + typeof (Context).Assembly
.GetName ().Version);
ScriptOrFnNode script = null;
string sourceName = "<stdin>";
int lineno = 1;
bool hitEOF = false;
do {
int startline = lineno;
Console.Error.Write ("js> ");
Console.Error.Flush ();
string source = "";
// Collect lines of source to compile.
while (true) {
string newline = Console.In.ReadLine ();
if (newline == null) {
hitEOF = true;
break;
}
source = source + newline + "\n";
lineno++;
// Continue collecting as long as more lines
// are needed to complete the current
// statement. stringIsCompilableUnit is also
// true if the source statement will result in
// any error other than one that might be
// resolved by appending more source.
if ((script = cx.IsCompilableUnit (source)) != null)
break;
}
try {
object result = cx.EvaluateString (this, source, sourceName, startline, (Object)null);
if (result != Context.UndefinedValue) {
Console.Error.WriteLine (ScriptConvert.ToString (result));
}
}
catch (Exception ex) {
PrintException (ex);
}
if (quitting || resetting) {
// The user executed the quit() function.
break;
}
}
while (!hitEOF);
Console.Error.WriteLine ();
}
else {
// Here we evalute the entire contents of the file as
// a script. Text is printed only if the print() function
// is called.
using (StreamReader sr = new StreamReader (filename)) {
try {
cx.EvaluateReader (this, sr, filename, 1, null);
} catch (Exception ex) {
PrintException (ex);
}
}
}
GC.Collect ();
}