private static bool GenerateStatement(Context expression, SymbolTable table, ILGenerator generator, Dictionary <string, LocalBuilder> variables, MethodEvaluatorBase parent)
{
if (expression.Children.Count == 2 && expression.Children.Last.Value is VariableAssignmentIdentifier v)
{
if (v.IsNewVariable)
{
parent.GenerateLocalVariable(v.Identifier, v.NewVarType, generator);
}
Action GenerateVar = () => GenerateExpression(expression.Children.First.Value, table, generator, variables, parent);
parent.GenerateVariableStore(generator, v.Identifier, GenerateVar);
return(false);
}
GenerateExpression(expression, table, generator, variables, parent);
if (expression is ReturnContext)
{
return(true);
}
return(false);
}
private static void GenerateExpression(Context expression, SymbolTable table, ILGenerator generator, Dictionary <string, LocalBuilder> variables, MethodEvaluatorBase parent)
{
if (expression is StringLiteral str)
{
generator.Emit(OpCodes.Ldstr, str.String);
}
else if (expression is IntLiteral num)
{
generator.Emit(OpCodes.Ldc_I4, num.Number);
}
else if (expression is IdentifierContext id)
{
var name = id.Identifier;
if (name == "true" || name == "false")
{
if (name == "true")
{
generator.Emit(OpCodes.Ldc_I4_1);
}
else
{
generator.Emit(OpCodes.Ldc_I4_0);
}
}
else
{
parent.GenerateVariableLoad(generator, name);
}
}
else if (expression.Children.Count == 1)
{
GenerateExpression(expression.Children.First.Value, table, generator, variables, parent);
}
else if (expression is ExpressionContext e && e.IsFunctionCall)
{
GenerateFunctionCall(e.Children.First.Value as IdentifierContext, e.Children.Skip(1), table, generator, variables, parent);
}
public static bool Generate(Context expression, SymbolTable functionTable, ILGenerator generator, Dictionary <string, LocalBuilder> variables, MethodEvaluatorBase parent)
{
bool isRet = GenerateStatement(expression, functionTable, generator, variables, parent);
if (isRet)
{
generator.Emit(OpCodes.Ret);
}
//for (; stackDepth > 0; stackDepth--) generator.Emit(OpCodes.Pop);
return(isRet);
}
