//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 ParseAssign(CodeAssign assign)
{
if (assign.AssignType == Scorpio.Compiler.TokenType.Assign)
{
ScriptObject variable = this.ResolveOperand(assign.value);
this.SetVariable(assign.member, variable);
return(variable);
}
return(this.GetVariable(assign.member).AssignCompute(assign.AssignType, this.ResolveOperand(assign.value)));
}
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);
}
ScriptObject ParseAssign(CodeAssign assign)
{
if (assign.AssignType == TokenType.Assign)
{
var ret = ResolveOperand(assign.value);
SetVariable(assign.member, ret);
return(ret);
}
else
{
ScriptObject obj = GetVariable(assign.member);
ScriptString str = obj as ScriptString;
if (str != null)
{
if (assign.AssignType == TokenType.AssignPlus)
{
return(str.AssignPlus(ResolveOperand(assign.value)));
}
else
{
throw new ExecutionException("string类型只支持[+=]赋值操作");
}
}
ScriptNumber num = obj as ScriptNumber;
if (num != null)
{
ScriptNumber right = ResolveOperand(assign.value) as ScriptNumber;
if (right == null)
{
throw new ExecutionException("[+= -=...]值只能为 number类型");
}
switch (assign.AssignType)
{
case TokenType.AssignPlus:
return(num.AssignPlus(right));
case TokenType.AssignMinus:
return(num.AssignMinus(right));
case TokenType.AssignMultiply:
return(num.AssignMultiply(right));
case TokenType.AssignDivide:
return(num.AssignDivide(right));
case TokenType.AssignModulo:
return(num.AssignModulo(right));
}
}
throw new ExecutionException("[+= -=...]左边值只能为number或者string");
}
}
ScriptObject ParseAssign(CodeAssign assign)
{
if (assign.AssignType == TokenType.Assign)
{
var ret = ResolveOperand(assign.value);
SetVariable(assign.member, ret);
return(ret);
}
else
{
return(GetVariable(assign.member).AssignCompute(assign.AssignType, ResolveOperand(assign.value)));
}
}