public static void Term(GATNode node)
{
int childnum = node.ChildCount();
string mulop = "";
GATNode child;
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
child = node.getChild(0);
node.SetProperty("value", child.GetProperty("value"));
for (int i = 1; i < childnum; i++)
{
child = node.getChild(i);
if (child.GetProperty("value") == "*")
{
mulop = "*";
}
else if (child.GetProperty("value") == "/")
{
mulop = "/";
}
else//有待解决如何记录结果
{
CodeGenerator.AddCode(mulop, node.GetProperty("value"), child.GetProperty("value"), "T" + CodeGenerator.tempnum);
Console.WriteLine(mulop + " " + node.GetProperty("value") + " " + child.GetProperty("value") + " " + "T" + CodeGenerator.tempnum);
node.SetProperty("value", "T" + CodeGenerator.tempnum);
CodeGenerator.tempnum++;
}
}
}
public static void Call(GATNode node)
{
//TODO:支持参数表，栈帧处理
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
var processName = node.getChild(0).GetProperty("value");
var args = node.getChild(1);
var argNum = args.ChildCount();
if (argNum == 0)
{
CodeGenerator.CallFunction(processName, new List <string>());
node.SetProperty("value", "void");
}
else
{
var paramList = new List <string>();
var argList = args.getChild(0);
for (int i = 0; i < argList.ChildCount(); i++)
{
paramList.Add(argList.getChild(i).GetProperty("value"));
}
var retNode = CodeGenerator.CallFunction(processName, paramList);
node.SetProperty("value", retNode);
}
}
public static void Expression2(GATNode node)
{
//var = expression
GATNode left, right;
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
left = node.getChild(0);
right = node.getChild(1);
node.SetProperty("value", left.GetProperty("value"));
CodeGenerator.AddCode("=", right.GetProperty("value"), null, left.GetProperty("value"));
Console.WriteLine("=" + " " + right.GetProperty("value") + " " + "\t" + " " + left.GetProperty("value"));
}
public static void IterationStmt(GATNode node)
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
var expressionLabel = node.getChild(0).GetProperty("LabelName");
var endLabel = node.getChild(5).GetProperty("LabelName");
var jmpLine = Int32.Parse(node.getChild(2).GetProperty("CodeLine"));
var retLine = Int32.Parse(node.getChild(4).GetProperty("CodeLine"));
CodeGenerator.SetCode(retLine, "j", "#", "#", "#");
CodeGenerator.PutLabel(expressionLabel, retLine);
CodeGenerator.SetCode(jmpLine, "je", node.getChild(1).GetProperty("value"), "0", "#");
CodeGenerator.PutLabel(endLabel, jmpLine);
}
public static void Var(GATNode node)
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
GATNode IDnode = node.getChild(0);
node.SetProperty("value", IDnode.GetProperty("value"));
}
public static void SelectionStmt(GATNode node)
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
var expression = node.getChild(0);
switch (node.ChildCount())
{
case 4:
{
var falseLabel = node.getChild(3).GetProperty("LabelName");
var jmpLine = Int32.Parse(node.getChild(1).GetProperty("CodeLine"));
CodeGenerator.SetCode(jmpLine, "je", expression.GetProperty("value"), "0", "0");
CodeGenerator.PutLabel(falseLabel, jmpLine);
break;
}
case 7:
{
var falseLabel = node.getChild(4).GetProperty("LabelName");
var jmpLine = Int32.Parse(node.getChild(1).GetProperty("CodeLine"));
CodeGenerator.SetCode(jmpLine, "je", expression.GetProperty("value"), "0", "0");
CodeGenerator.PutLabel(falseLabel, jmpLine);
var endLabel = node.getChild(6).GetProperty("LabelName");
var trueEndLine = Int32.Parse(node.getChild(3).GetProperty("CodeLine"));
CodeGenerator.SetCode(trueEndLine, "j", "#", "#", "#");
CodeGenerator.PutLabel(endLabel, trueEndLine);
break;
}
}
}
public static void varDeclaration(GATNode node)
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
string type, id;
type = node.getChild(0).GetProperty("value");
id = node.getChild(1).GetProperty("value");
node.SetProperty("value", id);
node.SetProperty("type", type);
GATNode process = node.GetParent();
while (process.name == "")
{
process = process.GetParent();
}
CodeGenerator.AddSymbol(node.GetProperty("value"), process.name, null);
}
public static void Expression1(GATNode node)
{
//simple expression
GATNode child;
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
child = node.getChild(0);
node.SetProperty("value", child.GetProperty("value"));
}
public static void program(GATNode node)
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
var startLine = Int32.Parse(node.getChild(0).GetProperty("CodeLine"));
CodeGenerator.SetCode(startLine, "j", "#", "#", "#");
CodeGenerator.PutLabel("main", startLine);
//CodeGenerator.AddLabel("global", 0);
}
public static void FunDeclaration(GATNode node)
{
//支持参数表
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
CodeGenerator.AddLabel(node.getChild(1).GetProperty("value"), Int32.Parse(node.getChild(3).GetProperty("CodeLine")));
var funcName = node.getChild(1).GetProperty("value");
var returnType = node.getChild(0).GetProperty("value");
var paramCount = node.getChild(2).ChildCount() == 0 ? 0 : node.getChild(2).getChild(0).ChildCount();
var paramName = new List <string>();
if (paramCount != 0)
{
var paramList = node.getChild(2).getChild(0);
for (int i = 0; i < paramList.ChildCount(); i++)
{
var param = paramList.getChild(i);
paramName.Add(param.getChild(1).GetProperty("value"));
}
}
CodeGenerator.AddFunction(new FunctionStackFrame
{
name = funcName,
returnType = returnType,
parameterCount = paramCount,
parameterName = paramName
});
}
public static void ReturnStmt(GATNode node)
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName);
if (node.ChildCount() == 0)
{
CodeGenerator.AddCode("ret", "#", "#", "#");
}
else
{
var tmpNode = "T" + CodeGenerator.tempnum++;
CodeGenerator.AddCode("+", "EBP", "12", tmpNode);
CodeGenerator.AddCode("*", tmpNode, "4", tmpNode);
CodeGenerator.AddCode("+", "EBP", tmpNode, tmpNode);
CodeGenerator.AddCode("+", tmpNode, "16", tmpNode);
CodeGenerator.AddCode("[", tmpNode, "#", tmpNode);
CodeGenerator.AddCode("[", tmpNode, "#", tmpNode);
CodeGenerator.AddCode("]", node.getChild(0).GetProperty("value"), "#", tmpNode);
CodeGenerator.AddCode("ret", "#", "#", "#");
}
}