public static MethodInvocationExpression GenerateIExpressionInvocationFor(string expressionName, params Expression[] arguments)
{
var @this = new SelfLiteralExpression();
var invoke = new MemberReferenceExpression(@this, "InvokeExpression");
Expression args;
if (arguments == null)
{
args = new NullLiteralExpression();
}
else if (arguments.Length == 1)
{
args = arguments[0];
}
else
{
args = new ArrayLiteralExpression {
Items = ExpressionCollection.FromArray(arguments)
}
};
return(new MethodInvocationExpression(invoke,
new StringLiteralExpression(expressionName),
args,
new ReferenceExpression("context")
));
}
public NullLiteralExpression CreateNullLiteral()
{
NullLiteralExpression expression = new NullLiteralExpression();
expression.ExpressionType = Null.Default;
return(expression);
}
public override void Switch(IAstTransformer transformer, out Node resultingNode)
{
NullLiteralExpression thisNode = (NullLiteralExpression)this;
Expression resultingTypedNode = thisNode;
transformer.OnNullLiteralExpression(thisNode, ref resultingTypedNode);
resultingNode = resultingTypedNode;
}
public static Expression CreateCallableFromMacroBody(BooCodeBuilder builder, MacroStatement macro)
{
// create closure for macro's body or null
Expression macroBody = new NullLiteralExpression();
if (macro.Block.Statements.Count > 0)
{
var callableExpr = new BlockExpression {
Body = macro.Block
};
callableExpr.Parameters.Add(
new ParameterDeclaration("OutputStream",
builder.CreateTypeReference(typeof(TextWriter))));
macroBody = callableExpr;
}
return(macroBody);
}
public override void OnNullLiteralExpression(NullLiteralExpression node)
{
Write("null");
}
override public void OnNullLiteralExpression(NullLiteralExpression node)
{
WriteKeyword("null");
}
public override void OnNullLiteralExpression(NullLiteralExpression node)
{
this._currentStatement.Expression = new CodePrimitiveExpression(null);
}
override public void OnNullLiteralExpression(NullLiteralExpression node)
{
OnExpression(node);
}
public override void OnNullLiteralExpression(NullLiteralExpression node)
{
_expression = new CodePrimitiveExpression(null);
}
public override void OnNullLiteralExpression(NullLiteralExpression node)
{
MakeResult(NullReturnType.Instance);
}
public override void OnNullLiteralExpression(NullLiteralExpression node)
{
base.OnNullLiteralExpression(node);
Check(node);
}
