public Func <TReturn> Compile <TReturn>(string formula)
{
var definition = new LambdaTypeDefinition {
ReturnedType = typeof(TReturn)
};
return(CompileToExpression <Func <TReturn> >(formula, definition)
.Compile());
}
public Func <TReturn> Compile <TReturn>(string formula)
{
var definition = new LambdaTypeDefinition {
ReturnedType = typeof(TReturn)
};
var compileToExpression = CompileToExpression <Func <TReturn> >(formula, definition);
return(compileToExpression != null?compileToExpression.Compile() : null);
}
internal Expression <T> CompileToExpression <T>(string formula, LambdaTypeDefinition definition)
{
BuildInfo.Clear();
var tree = Parse(formula);
if (tree == null)
{
return(null);
}
return(_translator.Translate <T>(tree, definition, CallProvider, BuildInfo));
}
public Expression <T> Translate <T>(CommonTree lambdaTree,
LambdaTypeDefinition definition,
ICallProvider callProvider,
BuildInfo buildInfo)
{
CallProvider = callProvider ?? EmptyCallProvider.Empty;
Definition = definition;
BuildInfo = buildInfo;
// Prepare params
Parameters = definition.Params.Select(
p => Expression.Parameter(p.ParamType, p.Name)).ToList();
// Prepare this param
if (definition.ThisType != null)
{
var thisParam = Expression.Parameter(definition.ThisType, "this");
This = thisParam;
Parameters.Insert(0, thisParam);
}
else
{
This = null;
}
Expression <T> expression = null;
try
{
expression = TranslateInternal <T>(lambdaTree);
}
catch (FormulaCompilerException e)
{
BuildInfo.Log(e.Message, FormulaCompilerBuildInfoLevels.Error);
}
return(expression);
}
internal CompilableLambda(LambdaTypeDefinition definition, FormulaCompiler compiler)
{
Definition = definition;
Compiler = compiler;
}