public override void Compile(Emitter.Emitter emitter)
{
try
{
Resolve(emitter);
if (!emitter.TypeIsParent(IdentifierType, Expression.GetExpressionType(emitter)))
Error(String.Format(Resources.errAssignTypeMismatch, Expression.GetExpressionType(emitter), IdentifierType));
}
catch(CompilerException ex)
{
ex.AffixToLexem(Lexem);
throw;
}
switch (Kind)
{
case IdentifierKind.StaticField: Expression.Compile(emitter);
emitter.EmitSaveField(emitter.FindField(OwnerType, Name)); break;
case IdentifierKind.Field: if (ExpressionPrefix != null)
ExpressionPrefix.Compile(emitter);
else
emitter.EmitLoadThis();
Expression.Compile(emitter);
emitter.EmitSaveField(emitter.FindField(OwnerType, Name)); break;
case IdentifierKind.Variable: Expression.Compile(emitter);
emitter.EmitSaveVariable(emitter.CurrentMethod.Scope.Find(Name)); break;
case IdentifierKind.Parameter: Expression.Compile(emitter);
emitter.EmitSaveParameter(emitter.CurrentMethod.Parameters[Name].Id); break;
}
}
public override void Compile(Emitter.Emitter emitter)
{
if(Expression != null)
{
try
{
emitter.CurrentMethod = emitter.CurrentType.Methods[(Static ? ".cctor" : ".init")][0];
}
catch
{
emitter.CurrentMethod = Static ? emitter.CreateStaticCtor(emitter.CurrentType, true) : emitter.CreateInitializer(emitter.CurrentType, true);
}
if (!Static)
emitter.EmitLoadThis();
Expression.Compile(emitter);
emitter.EmitSaveField(this);
emitter.CurrentMethod = null;
}
}
/// <summary>
/// Emit code for saving local variables into fields
/// </summary>
private void SaveClosuredVariables(Emitter.Emitter emitter, Utils.ScopeVariable variable)
{
foreach (var curr in Closures)
{
emitter.EmitLoadVariable(variable);
// load variable
var currVar = emitter.CurrentMethod.Scope.Find(curr.Key);
emitter.EmitLoadVariable(currVar);
// save into field
var currField = emitter.FindField(PlannerID, "_" + curr.Key);
emitter.EmitSaveField(currField);
}
}
/// <summary>
/// Generate code to setup the currently defined emitter
/// </summary>
/// <param name="emitter"></param>
private void CompileInitiation(Emitter.Emitter emitter)
{
var emitterType = emitter.FindType(EmitterID);
var tmpVar = emitter.CurrentMethod.Scope.Introduce(EmitterID, emitterType.Type);
// tmp = new emitterN()
emitter.EmitNewObj(emitter.FindMethod(EmitterID, ".ctor"));
emitter.EmitSaveVariable(tmpVar);
// step
if (Step != null)
{
// validate step
var stepType = Step.GetExpressionType(emitter);
if (!stepType.IsAnyOf("int", "float"))
Error(Resources.errEmitStepExpected);
// tmp.Step = step
emitter.EmitLoadVariable(tmpVar);
Step.Compile(emitter);
if (stepType == "int")
emitter.EmitConvertToFloat();
emitter.EmitSaveField(emitter.FindField(EmitterID, "step"));
}
// distribution
if (Distribution != null)
{
// validate distr
if (Distribution.GetExpressionType(emitter) != "distr")
Error(Resources.errEmitDistributionExpected);
// tmp.Distr = distr
emitter.EmitLoadVariable(tmpVar);
Distribution.Compile(emitter);
emitter.EmitSaveField(emitter.FindField(EmitterID, "distr"));
}
// limit
if (Limit != null)
{
// validate distr
if (Limit.GetExpressionType(emitter) != "int")
Error(Resources.errEmitLimitExpected);
// tmp.Distr = distr
emitter.EmitLoadVariable(tmpVar);
Limit.Compile(emitter);
emitter.EmitSaveField(emitter.FindField(EmitterID, "limit"));
}
SaveClosuredVariables(emitter, tmpVar);
// register emitter in the system
emitter.EmitLoadVariable(tmpVar);
var registerMethod = emitter.AssemblyImport(typeof(Simulation).GetMethod("RegisterEmitter", new[] { typeof(EventEmitter) }));
emitter.EmitCall(registerMethod);
}