static IEnumerable <object> Unfold(IEnumerable <object> items)
{
return(items.SelectMany((item) =>
{
item = ASTExpr.ConvertAnythingIteratableToIterator(item);
if (item is Antlr.Runtime.JavaExtensions.Iterator)
{
return ((Antlr.Runtime.JavaExtensions.Iterator)item).Source.Cast <object>();
}
else if (item is string)
{
return Enumerable.Repeat(item, 1);
}
else if (item is IEnumerable)
{
return ((IEnumerable)item).Cast <object>();
}
else if (item is IEnumerator)
{
return Enumerable.Repeat(item, 1);
}
else
{
return Enumerable.Repeat(item, 1);
}
}));
}
public ActionEvaluator(StringTemplate self, ASTExpr chunk, IStringTemplateWriter writer, ITree input)
: base(new CommonTreeNodeStream(new StringTemplateTreeAdaptor(), input))
{
this.self = self;
this.chunk = chunk;
this.writer = writer;
}
public virtual void AddElseIfSubtemplate(ASTExpr conditionalTree,
StringTemplate subtemplate)
{
if (_elseIfSubtemplates == null)
{
_elseIfSubtemplates = new List <ElseIfClauseData>();
}
ElseIfClauseData d = new ElseIfClauseData()
{
expr = conditionalTree,
st = subtemplate
};
_elseIfSubtemplates.Add(d);
}
static IEnumerable <object> Unfold(IEnumerable <object> items)
{
return(items.SelectMany((item) =>
{
item = ASTExpr.ConvertAnythingIteratableToIterator(item);
if (item is string)
{
return Enumerable.Repeat(item, 1);
}
else if (item is IEnumerable)
{
return ((IEnumerable)item).Cast <object>();
}
else if (item is IEnumerator)
{
return Enumerate((IEnumerator)item);
}
else
{
return Enumerable.Repeat(item, 1);
}
}));
}
static System.Func <StringTemplate, IStringTemplateWriter, bool> GetEvaluator(ASTExpr chunk, ITree condition)
{
if (EnableDynamicMethods)
{
try
{
DynamicMethod method = null;
#if CACHE_FUNCTORS
if (!_methods.TryGetValue(condition, out method))
#endif
{
Type[] parameterTypes = { typeof(ASTExpr), typeof(StringTemplate), typeof(IStringTemplateWriter) };
method = new DynamicMethod("ConditionEvaluator" + _evaluatorNumber, typeof(bool), parameterTypes, typeof(ConditionalExpr), true);
#if !NETSTANDARD2_0
method.DefineParameter(1, ParameterAttributes.None, "chunk");
method.DefineParameter(2, ParameterAttributes.None, "self");
method.DefineParameter(3, ParameterAttributes.None, "writer");
#endif
_evaluatorNumber++;
var gen = method.GetILGenerator();
ActionEvaluator evalCompiled = new ActionEvaluator(null, chunk, null, condition);
evalCompiled.ifConditionCompiled(gen);
gen.Emit(OpCodes.Ret);
#if CACHE_FUNCTORS
_methods[condition] = method;
#endif
}
var dynamicEvaluator = (System.Func <StringTemplate, IStringTemplateWriter, bool>)method.CreateDelegate(typeof(System.Func <StringTemplate, IStringTemplateWriter, bool>), chunk);
return(dynamicEvaluator);
}
catch
{
// fall back to functional (or interpreted) version
}
}
if (EnableFunctionalMethods)
{
try
{
ActionEvaluator evalFunctional = new ActionEvaluator(null, chunk, null, condition);
var functionalEvaluator = evalFunctional.ifConditionFunctional();
HoldsConditionFuncAndChunk holder = new HoldsConditionFuncAndChunk()
{
func = functionalEvaluator,
chunk = chunk
};
return((System.Func <StringTemplate, IStringTemplateWriter, bool>)System.Delegate.CreateDelegate(typeof(System.Func <StringTemplate, IStringTemplateWriter, bool>), holder, typeof(ConditionalExpr).GetMethod("CallFunctionalConditionEvaluator")));
}
catch
{
// fall back to interpreted version
}
}
return(new System.Func <StringTemplate, IStringTemplateWriter, bool>((self, @out) =>
{
ActionEvaluator eval = new ActionEvaluator(self, chunk, @out, condition);
return eval.ifCondition();
}));
}
static System.Func<StringTemplate, IStringTemplateWriter, bool> GetEvaluator( ASTExpr chunk, ITree condition )
{
if ( EnableDynamicMethods )
{
try
{
DynamicMethod method = null;
#if CACHE_FUNCTORS
if ( !_methods.TryGetValue( condition, out method ) )
#endif
{
Type[] parameterTypes = { typeof( ASTExpr ), typeof( StringTemplate ), typeof( IStringTemplateWriter ) };
method = new DynamicMethod( "ConditionEvaluator" + _evaluatorNumber, typeof( bool ), parameterTypes, typeof( ConditionalExpr ), true );
method.DefineParameter( 1, ParameterAttributes.None, "chunk" );
method.DefineParameter( 2, ParameterAttributes.None, "self" );
method.DefineParameter( 3, ParameterAttributes.None, "writer" );
_evaluatorNumber++;
var gen = method.GetILGenerator();
ActionEvaluator evalCompiled = new ActionEvaluator( null, chunk, null, condition );
evalCompiled.ifConditionCompiled( gen );
gen.Emit( OpCodes.Ret );
#if CACHE_FUNCTORS
_methods[condition] = method;
#endif
}
var dynamicEvaluator = (System.Func<StringTemplate, IStringTemplateWriter, bool>)method.CreateDelegate( typeof( System.Func<StringTemplate, IStringTemplateWriter, bool> ), chunk );
return dynamicEvaluator;
}
catch
{
// fall back to functional (or interpreted) version
}
}
if ( EnableFunctionalMethods )
{
try
{
ActionEvaluator evalFunctional = new ActionEvaluator( null, chunk, null, condition );
var functionalEvaluator = evalFunctional.ifConditionFunctional();
HoldsConditionFuncAndChunk holder = new HoldsConditionFuncAndChunk()
{
func = functionalEvaluator,
chunk = chunk
};
return (System.Func<StringTemplate, IStringTemplateWriter, bool>)System.Delegate.CreateDelegate( typeof( System.Func<StringTemplate, IStringTemplateWriter, bool> ), holder, typeof( ConditionalExpr ).GetMethod( "CallFunctionalConditionEvaluator" ) );
}
catch
{
// fall back to interpreted version
}
}
return new System.Func<StringTemplate, IStringTemplateWriter, bool>( ( self, @out ) =>
{
ActionEvaluator eval = new ActionEvaluator( self, chunk, @out, condition );
return eval.ifCondition();
} );
}
public virtual void AddElseIfSubtemplate( ASTExpr conditionalTree,
StringTemplate subtemplate)
{
if ( _elseIfSubtemplates == null )
{
_elseIfSubtemplates = new List<ElseIfClauseData>();
}
ElseIfClauseData d = new ElseIfClauseData()
{
expr = conditionalTree,
st = subtemplate
};
_elseIfSubtemplates.Add( d );
}
