public CaseToken(SimpleToken tokenInfo)
: base(tokenInfo)
{
}
public static GlobalSymbolInfo Lookup(SimpleToken token)
{
return (GlobalSymbolInfo)globalSymbolTable.Table[token.Text.ToUpper()];
}
// Maps method-local IDs to local variable information
public SymbolInfo Lookup(SimpleToken token)
{
return (SymbolInfo)Table[token.Text.ToUpper()];
}
public DatOrgxEntry(SimpleToken orgxToken)
{
this.orgxToken = orgxToken;
}
public ObjSymbolInfo(IdToken idToken, SimpleToken filenameToken, Expr countExpr, bool needsVarSpace)
: base(idToken)
{
this.filenameToken = filenameToken;
this.countExpr = countExpr;
this.needsVarSpace = needsVarSpace;
}
public DatFileEntry(SimpleToken fileToken, SimpleToken filenameToken, byte[] bytes, int endLineNumber)
{
this.fileToken = fileToken;
this.filenameToken = filenameToken;
this.bytes = bytes;
this.endLineNumber = endLineNumber;
}
public DatInstructionEntry(IPropInstruction instruction, int cond, Expr eD, Expr eS, bool immediate, int effect, SimpleToken token, int endLineNumber)
{
this.instruction = instruction;
this.cond = cond;
this.eD = eD;
this.eS = eS;
this.immediate = immediate;
this.effect = effect;
this.token = token;
this.endLineNumber = endLineNumber;
}
public void AddDatOrgEntry(SimpleToken orgToken, Expr orgExpr, int endLineNumber)
{
datEntryList.Add(new DatOrgEntry(orgToken, orgExpr, endLineNumber));
}
public void AddDatOrgxEntry(SimpleToken orgxToken)
{
datEntryList.Add(new DatOrgxEntry(orgxToken));
}
public void AddDatFitEntry(SimpleToken token, Expr e)
{
datEntryList.Add(new DatFitEntry(token, e));
}
public void AddDatInstructionEntry(IPropInstruction instruction, int cond, Expr eD, Expr eS, bool immediate, int effect, SimpleToken token, int endLineNumber)
{
datEntryList.Add(new DatInstructionEntry(instruction, cond, eD, eS, immediate, effect, token, endLineNumber));
}
public void AddDatFileEntry(SimpleToken fileToken, SimpleToken filenameToken, byte[] bytes, int endLineNumber)
{
datEntryList.Add(new DatFileEntry(fileToken, filenameToken, bytes, endLineNumber));
}
public void AddDatDataEntry(int alignment, int size, Expr dataExpr, Expr countExpr, SimpleToken token)
{
datEntryList.Add(new DatDataEntry(alignment, size, dataExpr, countExpr, token));
}
public ClksetToken(SimpleToken tokenInfo)
: base(tokenInfo)
{
}
public static GlobalSymbolInfo Add(SimpleToken token, ObjectFileSymbolTable objectFileSymbolTable)
{
// New global symbols are added to the global symbol table and to globalList (at the end).
// Existing global symbols are moved to the end of globalList. This is done to duplicate
// PropTool's behavior. Why PropTool does what it does I have no idea.
// 7/24 Finally realized why: when the objects are laid out in this order, all
// the inter-object offsets are positive.
GlobalSymbolInfo gsi = GlobalSymbolTable.Lookup(token);
if (gsi == null)
{
gsi = new GlobalSymbolInfo(token, objectFileSymbolTable);
globalSymbolTable.AddSymbolInfo(gsi);
globalList.Add(gsi);
}
else
{
if (!gsi.AlreadyRead)
throw new ParseException("Circular object reference", token);
for (int i = 0; i < globalList.Count; ++i)
{
if (globalList[i] == gsi)
{
globalList.RemoveAt(i);
globalList.Add(gsi);
break;
}
}
}
return gsi;
}
public void AddDatResEntry(SimpleToken resToken, Expr e, int endLineNumber)
{
datEntryList.Add(new DatResEntry(resToken, e, endLineNumber));
}
public DatDataEntry(int alignment, int size, Expr dataExpr, Expr countExpr, SimpleToken token)
{
this.alignment = alignment;
this.size = size;
this.dataExpr = dataExpr;
this.countExpr = countExpr;
this.token = token;
}
public void AddDatSourceReference(SimpleToken endToken)
{
// Using SourceReference to mark the end of a line of data entries.
datEntryList.Add(new SourceReference(endToken, endToken.LineNumber));
}
public DatFitEntry(SimpleToken token, Expr e)
{
this.token = token;
this.e = e;
}
public void AddObjSymbol(IdToken idToken, SimpleToken filenameToken, Expr countExpr, bool needsVarSpace)
{
AssertUndefined(idToken);
ObjSymbolInfo objSymbolInfo = new ObjSymbolInfo(idToken, filenameToken, countExpr, needsVarSpace);
AddSymbolInfo(objSymbolInfo);
objList.Add(objSymbolInfo);
}
public DatOrgEntry(SimpleToken orgToken, Expr orgExpr, int endLineNumber)
{
this.orgToken = orgToken;
this.orgExpr = orgExpr;
this.endLineNumber = endLineNumber;
}
public GlobalSymbolInfo AddToGlobalSymbolTable(SimpleToken token)
{
return GlobalSymbolTable.Add(token, this);
}
public DatResEntry(SimpleToken resToken, Expr e, int endLineNumber)
{
this.resToken = resToken;
this.e = e;
this.endLineNumber = endLineNumber;
}
public GlobalSymbolInfo(SimpleToken idToken, ObjectFileSymbolTable symbolTable)
: base(idToken)
{
this.symbolTable = symbolTable;
}
public SymbolInfo(SimpleToken idToken)
{
this.idToken = idToken;
}
// Does a lookup in local symbol table (if we're in a method scope),
// then object file symbol table, then global symbol table.
// Returns null if id is not found.
public SymbolInfo Lookup(SimpleToken idToken)
{
SymbolInfo symbolInfo = null;
if (idToken.Text[0] == ':')
{
idToken.Text = latestLabel + idToken.Text;
}
if (localSymbolTable != null)
{
symbolInfo = localSymbolTable.Lookup(idToken);
if (symbolInfo != null)
return symbolInfo;
}
symbolInfo = (SymbolInfo)Table[idToken.Text.ToUpper()];
if (symbolInfo != null)
return symbolInfo;
return GlobalSymbolTable.Lookup(idToken);
}
public static GlobalSymbolInfo LookupExisting(SimpleToken token)
{
GlobalSymbolInfo gsi = (GlobalSymbolInfo)globalSymbolTable.Table[token.Text.ToUpper()];
if (gsi == null)
throw new ParseException("Couldn't find {0}", token);
return gsi;
}
// Throws if id is not found.
public SymbolInfo LookupExisting(SimpleToken idToken)
{
SymbolInfo symbolInfo = Lookup(idToken);
if (symbolInfo == null)
throw new ParseException("Unknown symbol " + idToken.Text, idToken);
return symbolInfo;
}
public int Compile(int a)
{
this.Offset = a; // Compiling bytecode to object starting at offset a.
// This information is needed by Fixup for CASE/LOOKDOWN/LOOKUP and STRING offsets.
int i = 0;
int offset = 0;
if (localNameList.Count > 0 && localNameList[0] == null)
{
i = 1;
offset = 4;
}
localsSize = 0;
IdToken.SymbolTable.BeginMethodScope();
for (; i < localNameList.Count; ++i)
{
IdToken.SymbolTable.AddLocalVariable(localNameList[i] as IdToken, offset);
///Console.WriteLine( "assertundefined {0}", (localNameList[i] as IdToken).Text );;;
///IdToken.SymbolTable.AssertUndefined( localNameList[i] as IdToken );;;
Expr countExpr = localCountList[i] as Expr;
int d = 4;
if (countExpr != null)
d = 4 * Expr.EvaluateIntConstant(countExpr);
offset += d;
if (i > paramCount) localsSize += d;
}
SimpleToken resultToken = new SimpleToken(IdToken.Tokenizer, SimpleTokenType.Id, "result", 0, 0);
if (IdToken.SymbolTable.Lookup(resultToken) == null)
IdToken.SymbolTable.AddLocalVariable(new IdToken(resultToken), 0);
bytecodeList = new ArrayList();
foreach (Stmt s in statementList)
{
s.MakeByteCode(bytecodeList);
}
bytecodeList.Add((byte)0x32); // every method has an invisible RETURN;
// Now append string literals.
for (int j = 0; j < IdToken.SymbolTable.StringList.Count; ++j)
{
bytecodeList.Add((JmpTarget)IdToken.SymbolTable.StringTargetList[j]);
bytecodeList.Add(new StringStart());
string s = (string)IdToken.SymbolTable.StringList[j];
foreach (char ch in s)
{
bytecodeList.Add((byte)ch);
}
bytecodeList.Add((byte)0);
bytecodeList.Add(new StringEnd());
}
while (BytecodeFixupPass(a))
{
}
sizeInBytes = 0;
foreach (object o in bytecodeList)
{
if (o is byte)
{
++sizeInBytes;
}
else if (o is JmpStart)
{
sizeInBytes += (o as JmpStart).bytecode.Length;
}
else if (o is OffsetStart)
{
sizeInBytes += (o as OffsetStart).bytecode.Length;
}
else if (o is StringOffsetStart)
{
sizeInBytes += (o as StringOffsetStart).bytecode.Length;
}
}
IdToken.SymbolTable.EndMethodScope();
return a + sizeInBytes;
}
public BlockDesignatorToken(SimpleToken tokenInfo)
: base(tokenInfo)
{
}
