private FirstPassResult HandleCodeFirstPass(
IExpression <T> expression,
AssemblyContext <T> assemblyContext)
{
Code <T> code = (Code <T>)expression;
if (code.IsEmpty)
{
return(FirstPassResult.Invalid());
}
if (HandleBuiltInCode(code, assemblyContext, false))
{
return(FirstPassResult.Invalid());
}
var paramTypes = code.Parameters.Select(EAType.GetType).ToArray();
var templateError = storer.FindTemplate(code.CodeName.Name, paramTypes);
if (templateError.CausedError)
{
assemblyContext.AddError(code, templateError);
return(FirstPassResult.Invalid());
}
else
{
var template = templateError.Result;
int oldOffset = assemblyContext.CurrentOffset;
assemblyContext.CurrentOffset += template.GetLengthBytes(code.Parameters);
return(FirstPassResult.Valid(code, oldOffset, template));
}
}
private FirstPassResult HandleScopeFirstPass(
IExpression <T> expression,
AssemblyContext <T> assemblyContext)
{
assemblyContext.SetScopeStructure(expression);
return(FirstPassResult.Invalid());
}
private FirstPassResult HandleLabelFirstPass(
IExpression <T> expression,
AssemblyContext <T> assemblyContext)
{
LabeledExpression <T> labelExp = (LabeledExpression <T>)expression;
assemblyContext.CurrentScope.AddNewSymbol((labelExp).LabelName,
new ValueExpression <T>(intType.FromInt(assemblyContext.CurrentOffset), default(FilePosition)));
return(FirstPassResult.Invalid());
}
private FirstPassResult HandleAssignmentFirstPass(
IExpression <T> expression,
AssemblyContext <T> assemblyContext)
{
Assingment <T> assignment = (Assingment <T>)expression;
if (assignment.VariableCount != 0)
{
assemblyContext.AddError(assignment, "Assignments with parameters aren't supported.");
}
else
{
assemblyContext.CurrentScope.AddNewSymbol(assignment.Name.Name, assignment.Result);
}
return(FirstPassResult.Invalid());
}
