/// <summary> Parse the input and return the root of the AST node structure.
/// *
/// </summary>
/// <param name="InputStream">inputstream retrieved by a resource loader
/// </param>
/// <param name="String">name of the template being parsed
/// </param>
/// <param name="dumpNamespace">flag to dump the Velocimacro namespace for this template
///
/// </param>
public virtual SimpleNode parse(System.IO.TextReader reader, System.String templateName, bool dumpNamespace)
{
SimpleNode ast = null;
Parser.Parser parser = (Parser.Parser)parserPool.get();
bool madeNew = false;
if (parser == null)
{
/*
* if we couldn't get a parser from the pool
* make one and log it.
*/
error("Runtime : ran out of parsers. Creating new. " + " Please increment the parser.pool.size property." + " The current value is too small.");
parser = createNewParser();
if (parser != null)
{
madeNew = true;
}
}
/*
* now, if we have a parser
*/
if (parser != null)
{
try {
/*
* dump namespace if we are told to. Generally, you want to
* do this - you don't in special circumstances, such as
* when a VM is getting init()-ed & parsed
*/
if (dumpNamespace)
{
dumpVMNamespace(templateName);
}
ast = parser.parse(reader, templateName);
} finally {
/*
* if this came from the pool, then put back
*/
if (!madeNew)
{
parserPool.put(parser);
}
}
}
else
{
error("Runtime : ran out of parsers and unable to create more.");
}
return(ast);
}
/// <summary> Returns a JavaCC generated Parser.
/// </summary>
/// <returns>Parser javacc generated parser
///
/// </returns>
public virtual Parser.Parser createNewParser() {
Parser.Parser parser = new Parser.Parser(this);
parser.Directives = runtimeDirectives;
return parser;
}
/// <summary> Returns a JavaCC generated Parser.
/// </summary>
/// <returns>Parser javacc generated parser
///
/// </returns>
public virtual Parser.Parser createNewParser()
{
Parser.Parser parser = new Parser.Parser(this);
parser.Directives = runtimeDirectives;
return(parser);
}
