public static Expression <Action <BindingContext, TextWriter, object> > Bind(CompilationContext context, Expression body, string templatePath)
{
var configuration = Arg(context.Configuration);
var writerParameter = Parameter <TextWriter>("buffer");
var objectParameter = Parameter <object>("data");
var bindingContext = Arg <BindingContext>(context.BindingContext);
var textEncoder = configuration.Property(o => o.TextEncoder);
var writer = Var <EncodedTextWriter>("writer");
var encodedWriterExpression = Call(() => EncodedTextWriter.From(writerParameter, (ITextEncoder)textEncoder));
var parentContextArg = Var <BindingContext>("parentContext");
var newBindingContext = Call(
() => BindingContext.Create((ICompiledHandlebarsConfiguration)configuration, objectParameter, writer, parentContextArg, templatePath)
);
Expression blockBuilder = Block()
.Parameter(bindingContext)
.Parameter(writer)
.Parameter <bool>(out var shouldDispose)
.Parameter <bool>(out var shouldDisposeWriter)
.Line(bindingContext.Assign(objectParameter.As <BindingContext>()))
.Line(Condition()
.If(Expression.Equal(bindingContext, Null <BindingContext>()))
.Then(block =>
{
block.Line(shouldDispose.Assign(true))
.Line(writer.Assign(writerParameter.As <EncodedTextWriter>()))
.Line(Condition()
.If(Expression.Equal(writer, Null <EncodedTextWriter>()))
.Then(b =>
{
b.Line(shouldDisposeWriter.Assign(true))
.Line(writer.Assign(encodedWriterExpression));
})
);
block.Line(bindingContext.Assign(newBindingContext));
})
)
.Line(Try()
.Body(block => block.Lines(((BlockExpression)body).Expressions))
.Finally(block =>
{
block.Lines(
Condition()
.If(shouldDispose)
.Then(bindingContext.Call(o => o.Dispose())),
Condition()
.If(shouldDisposeWriter)
.Then(writer.Call(o => o.Dispose()))
);
})
);
return(Expression.Lambda <Action <BindingContext, TextWriter, object> >(blockBuilder, (ParameterExpression)parentContextArg.Expression, (ParameterExpression)writerParameter.Expression, (ParameterExpression)objectParameter.Expression));
}
public static Expression <Action <BindingContext, TextWriter, object> > Bind(CompilationContext context, Expression body, string templatePath)
{
var configuration = ExpressionShortcuts.Arg(context.Configuration);
var writerParameter = ExpressionShortcuts.Parameter <TextWriter>("buffer");
var objectParameter = ExpressionShortcuts.Parameter <object>("data");
var bindingContext = ExpressionShortcuts.Arg <BindingContext>(context.BindingContext);
var inlinePartialsParameter = ExpressionShortcuts.Null <IDictionary <string, Action <TextWriter, object> > >();
var textEncoder = configuration.Property(o => o.TextEncoder);
var encodedWriterExpression = ExpressionShortcuts.Call(() => EncodedTextWriter.From(writerParameter, (ITextEncoder)textEncoder));
var parentContextArg = ExpressionShortcuts.Var <BindingContext>("parentContext");
var newBindingContext = ExpressionShortcuts.Call(
() => BindingContext.Create(configuration, objectParameter, encodedWriterExpression, parentContextArg, templatePath, (IDictionary <string, Action <TextWriter, object> >)inlinePartialsParameter)
);
var shouldDispose = ExpressionShortcuts.Var <bool>("shouldDispose");
Expression blockBuilder = ExpressionShortcuts.Block()
.Parameter(bindingContext)
.Parameter(shouldDispose)
.Line(ExpressionShortcuts.Condition()
.If(objectParameter.Is <BindingContext>(),
bindingContext.Assign(objectParameter.As <BindingContext>())
)
.Else(block =>
{
block.Line(shouldDispose.Assign(true));
block.Line(bindingContext.Assign(newBindingContext));
})
)
.Line(ExpressionShortcuts.Try()
.Body(block => block.Lines(((BlockExpression)body).Expressions))
.Finally(ExpressionShortcuts.Condition()
.If(shouldDispose, bindingContext.Call(o => o.Dispose()))
)
);
return(Expression.Lambda <Action <BindingContext, TextWriter, object> >(blockBuilder, (ParameterExpression)parentContextArg.Expression, (ParameterExpression)writerParameter.Expression, (ParameterExpression)objectParameter.Expression));
}