//获取一个Object
private CodeObject GetObject()
{
Stack <TempOperator> operateStack = new Stack <TempOperator>();
Stack <CodeObject> objectStack = new Stack <CodeObject>();
while (true)
{
objectStack.Push(GetOneObject());
if (!P_Operator(operateStack, objectStack))
{
break;
}
}
while (operateStack.Count > 0)
{
objectStack.Push(new CodeOperator(objectStack.Pop(), objectStack.Pop(), operateStack.Pop().Operator, m_strBreviary, GetSourceLine()));
}
CodeObject ret = objectStack.Pop();
if (ret is CodeMember)
{
CodeMember member = ret as CodeMember;
if (member.Calc == CALC.NONE)
{
Token token = ReadToken();
switch (token.Type)
{
case TokenType.Assign:
case TokenType.AssignPlus:
case TokenType.AssignMinus:
case TokenType.AssignMultiply:
case TokenType.AssignDivide:
case TokenType.AssignModulo:
case TokenType.AssignCombine:
case TokenType.AssignInclusiveOr:
case TokenType.AssignXOR:
case TokenType.AssignShr:
case TokenType.AssignShi:
ret = new CodeAssign(member, GetObject(), token.Type, m_strBreviary, token.SourceLine);
break;
default:
UndoToken();
break;
}
}
}
if (PeekToken().Type == TokenType.QuestionMark)
{
ReadToken();
CodeTernary ternary = new CodeTernary();
ternary.Allow = ret;
ternary.True = GetObject();
ReadColon();
ternary.False = GetObject();
return(ternary);
}
return(ret);
}
private ScriptObject ParseTernary(CodeTernary ternary)
{
if (!this.ResolveOperand(ternary.Allow).LogicOperation())
{
return(this.ResolveOperand(ternary.False));
}
return(this.ResolveOperand(ternary.True));
}
ScriptObject ParseTernary(CodeTernary ternary)
{
ScriptBoolean b = ResolveOperand(ternary.Allow) as ScriptBoolean;
if (b == null)
{
throw new ExecutionException("三目运算符 条件必须是一个bool型");
}
return(b.Value ? ResolveOperand(ternary.True) : ResolveOperand(ternary.False));
}
private CodeObject GetObject()
{
Stack <TempOperator> operateStack = new Stack <TempOperator>();
Stack <CodeObject> objectStack = new Stack <CodeObject>();
do
{
objectStack.Push(this.GetOneObject());
}while (this.P_Operator(operateStack, objectStack));
while (operateStack.Count > 0)
{
objectStack.Push(new CodeOperator(objectStack.Pop(), objectStack.Pop(), operateStack.Pop().Operator, this.m_strBreviary, this.GetSourceLine()));
}
CodeObject obj2 = objectStack.Pop();
if (obj2 is CodeMember)
{
CodeMember member = obj2 as CodeMember;
if (member.Calc == CALC.NONE)
{
Token token = this.ReadToken();
switch (token.Type)
{
case Scorpio.Compiler.TokenType.AssignShi:
case Scorpio.Compiler.TokenType.AssignShr:
case Scorpio.Compiler.TokenType.Assign:
case Scorpio.Compiler.TokenType.AssignCombine:
case Scorpio.Compiler.TokenType.AssignXOR:
case Scorpio.Compiler.TokenType.AssignMinus:
case Scorpio.Compiler.TokenType.AssignMultiply:
case Scorpio.Compiler.TokenType.AssignDivide:
case Scorpio.Compiler.TokenType.AssignModulo:
case Scorpio.Compiler.TokenType.AssignInclusiveOr:
case Scorpio.Compiler.TokenType.AssignPlus:
obj2 = new CodeAssign(member, this.GetObject(), token.Type, this.m_strBreviary, token.SourceLine);
goto Label_0121;
}
this.UndoToken();
}
}
Label_0121:
if (this.PeekToken().Type == Scorpio.Compiler.TokenType.QuestionMark)
{
this.ReadToken();
CodeTernary ternary = new CodeTernary {
Allow = obj2,
True = this.GetObject()
};
this.ReadColon();
ternary.False = this.GetObject();
return(ternary);
}
return(obj2);
}
//返回三元运算符
private CodeObject GetTernary(CodeObject parent)
{
if (PeekToken().Type == TokenType.QuestionMark)
{
CodeTernary ret = new CodeTernary();
ret.Allow = parent;
ReadToken();
ret.True = GetObject();
ReadColon();
ret.False = GetObject();
return(ret);
}
return(parent);
}
ScriptObject ParseTernary(CodeTernary ternary)
{
return(ResolveOperand(ternary.Allow).LogicOperation() ? ResolveOperand(ternary.True) : ResolveOperand(ternary.False));
}