public IfStatementNode(ExpressionNode condition, StatementNode thenBody, StatementNode elseBody)
{
Condition = condition;
ThenBody = thenBody;
ElseBody = elseBody;
}
public WhileStatementNode(ExpressionNode condition, StatementNode body)
{
Condition = condition;
Body = body;
}
protected PredefinedSymFunc(string name, List <SymVar> parameters, SymTable localVariables, StatementNode body, SymType returnType)
: base(name, parameters, localVariables, body, returnType)
{
}
public SymFunc(string name, List <SymVar> parameters, SymTable localVariables, StatementNode body, SymType returnType)
{
Name = name;
Parameters = parameters;
LocalVariables = localVariables;
Body = body;
if (returnType == null)
{
ReturnType = new SymVoid();
}
else
{
ReturnType = returnType;
}
//predefined
if (localVariables == null)
{
return;
}
foreach (var localSymbol in LocalVariables.Reverse())
{
var lvar = localSymbol as SymVar;
Debug.Assert(lvar != null);
if (lvar.LocType != SymVar.SymLocTypeEnum.Local)
{
continue;
}
LocalVariableBsize += lvar.Type.BSize;
LocalVarOffsetTable.Add(lvar.Name, LocalVariableBsize);
}
// align
LocalVariableBsize += LocalVariableBsize % 8 > 0 ? 8 - LocalVariableBsize % 8 : 0;
var paramOffset = 16;
foreach (var param in parameters)
{
ParamsOffsetTable.Add(param.Name, paramOffset);
var paramSize = param.Type.BSize;
// parameters will be aligned on stack
paramSize += paramSize % 8 > 0 ? 8 - paramSize % 8 : 0;
paramOffset += paramSize;
}
ParamsSizeB = paramOffset;
}
public void AddFunction(IdentifierToken nameToken, List <SymVar> paramList, SymTable localVars, StatementNode body,
SymType returnType)
{
//todo: add checks
RequireSymbolRewritable(nameToken);
// SymType returnType = null;
// if (returnTypeToken != null) {
// returnType = FindType(returnTypeToken.Value);
// if (returnType == null)
// throw new TypeNotFoundException(returnTypeToken.Lexeme, returnTypeToken.Line, returnTypeToken.Column);
// }
// _stack.Peek().Add(new SymFunc(nameToken.Value, paramList, localVars, body, returnType));
AddConst(nameToken, new SymFuncConst(nameToken.Value,
new SymFunc(nameToken.Value, paramList, localVars, body, returnType),
SymVarOrConst.SymLocTypeEnum.Global));
}
public WhileStatementNode(ExpressionNode condition, StatementNode body)
{
Condition = condition;
Body = body;
}
public IfStatementNode(ExpressionNode condition, StatementNode thenBody, StatementNode elseBody)
{
Condition = condition;
ThenBody = thenBody;
ElseBody = elseBody;
}