public void GetInstanceMemberValueExpression_Int()
{
var example = new ExampleClass
{
IntValue = 3
};
var func = new GetInstanceMemberValueExpression()
.GetFunc(
typeof(ExampleClass),
"IntValue");
int testValue = (int)func(example);
Assert.AreEqual(3, testValue);
}
private void Init(
string caller,
bool hasReturn)
{
CSharpCodeWriter writer = new CSharpCodeWriter();
string classText = writer.GetClassText(
expression,
variables.Select(entry => new CSharpCodeWriter.Variable
{
Name = entry.Key,
Type = entry.Value.Type
}).ToList(),
usings,
methods,
withReturn: hasReturn);
if (DebugFileOutputName != null)
{
File.WriteAllText(
DebugFileOutputName,
classText);
}
// instead of taking the everytime hit of a synchronized lock
// choosing to take the infrequent possible hit of simultaneous
// calls creating multiple types with the same class text
// only the last one's definition will be cached for the next caller
bool alreadyCompiled = compiledTypes.ContainsKey(classText);
if (alreadyCompiled)
{
execution = compiledTypes[classText];
}
else
{
references.Add(caller);
// add references to containing assemblies for all used variable types
variables
.Select(v => v.Value.Type.Assembly.Location)
.Distinct()
.ToList()
.ForEach(a => references.Add(a));
execution = new Execution();
Compiler compiler = new Compiler();
Type newType = compiler.Compile(
classText,
references,
"EvalAssembly",
"CustomEvaluator");
execution.Constructor = new DefaultClassConstructorExpression().GetFunc(
newType);
foreach (string key in variables.Keys)
{
Variable variable = variables[key];
Func <object, object> getter = null;
Action <object, object> setter = null;
if (variable.Type.IsPublic)
{
getter = new GetInstanceMemberValueExpression().GetFunc(
newType,
key);
setter = new SetInstanceMemberValueExpression().GetAction(
newType,
key);
}
else
{
getter = new WrapperTranslator().GetGetAndUnwrap(
newType,
key);
setter = new WrapperTranslator().GetWrapAndSet(
newType,
key);
}
execution.Variables[key] = new ExecutionVariable
{
Getter = getter,
Setter = setter
};
}
if (hasReturn)
{
execution.Evaluate = new ExecuteInstanceMethodExpression().GetFuncWithReturn(
newType,
"Eval");
}
else
{
execution.Execute = new ExecuteInstanceMethodExpression().GetFuncWithNoReturn(
newType,
"Eval");
}
compiledTypes[classText] = execution;
}
initialized = true;
}
