private void Atom(out object result)
{
ComputeEngineTokenType computeEngineTokenType = this.tokType;
if (computeEngineTokenType != ComputeEngineTokenType.TkNumber)
{
if (computeEngineTokenType != ComputeEngineTokenType.TkString)
{
result = null;
throw new ComputeEngineParserException("计算表达式语法错误！");
}
result = this.token;
this.GetToken();
}
else
{
try
{
result = double.Parse(this.token);
}
catch (FormatException)
{
throw new ComputeEngineParserException("计算表达式语法错误！");
}
this.GetToken();
}
}
private void ReplaceVariable()
{
string tokenUpp = this.token.ToUpper();
bool flag = this.InnerVariables.ContainsKey(tokenUpp);
if (flag)
{
try
{
this.token = double.Parse(this.InnerVariables[tokenUpp].ToString().Trim()).ToString();
this.tokType = ComputeEngineTokenType.TkNumber;
}
catch
{
this.token = this.InnerVariables[tokenUpp].ToString().Trim();
this.tokType = ComputeEngineTokenType.TkString;
}
}
else
{
bool flag2 = this.ExternVariables.ContainsKey(tokenUpp);
if (flag2)
{
try
{
this.token = double.Parse(this.ExternVariables[tokenUpp].ToString().Trim()).ToString();
this.tokType = ComputeEngineTokenType.TkNumber;
}
catch
{
this.token = this.ExternVariables[tokenUpp].ToString().Trim();
this.tokType = ComputeEngineTokenType.TkString;
}
}
else
{
object variable = new object();
bool result = this.EvalUnkownVariable(tokenUpp, out variable);
bool flag3 = result;
if (!flag3)
{
throw new ComputeEngineParserException("未知变量：" + this.token + "！");
}
try
{
this.token = double.Parse(variable.ToString().Trim()).ToString();
this.tokType = ComputeEngineTokenType.TkNumber;
}
catch
{
this.token = variable.ToString();
this.tokType = ComputeEngineTokenType.TkString;
}
}
}
}
private void GetToken()
{
this.tokType = ComputeEngineTokenType.TkNone;
this.token = "";
bool flag = this.expIdx == this.exp.Length;
if (!flag)
{
while (this.expIdx < this.exp.Length && char.IsWhiteSpace(this.exp[this.expIdx]))
{
this.expIdx++;
}
bool flag2 = this.expIdx == this.exp.Length;
if (!flag2)
{
bool flag3 = this.IsDelim(this.exp[this.expIdx]);
if (flag3)
{
this.token += this.exp[this.expIdx].ToString();
bool flag4 = this.exp[this.expIdx] == '<';
if (flag4)
{
this.expIdx++;
bool b = false;
bool flag5 = this.exp[this.expIdx] == '<' || this.exp[this.expIdx] == '=' || this.exp[this.expIdx] == '>';
if (flag5)
{
this.token += this.exp[this.expIdx].ToString();
b = true;
}
bool flag6 = !b;
if (flag6)
{
this.expIdx--;
}
}
else
{
bool flag7 = this.exp[this.expIdx] == '>';
if (flag7)
{
this.expIdx++;
bool b = false;
bool flag8 = this.exp[this.expIdx] == '=' || this.exp[this.expIdx] == '>';
if (flag8)
{
this.token += this.exp[this.expIdx].ToString();
b = true;
}
bool flag9 = !b;
if (flag9)
{
this.expIdx--;
}
}
}
this.expIdx++;
this.tokType = ComputeEngineTokenType.TkDelimiter;
}
else
{
bool flag10 = char.IsLetter(this.exp[this.expIdx]) || this.exp[this.expIdx] == '_';
if (flag10)
{
this.token += this.exp[this.expIdx].ToString();
this.expIdx++;
bool flag11 = this.expIdx == this.exp.Length;
if (!flag11)
{
while (char.IsLetter(this.exp[this.expIdx]) || char.IsDigit(this.exp[this.expIdx]) || this.exp[this.expIdx] == '.')
{
this.token += this.exp[this.expIdx].ToString();
this.expIdx++;
bool flag12 = this.expIdx == this.exp.Length;
if (flag12)
{
break;
}
}
bool flag13 = this.expIdx != this.exp.Length;
if (flag13)
{
bool flag14 = this.exp[this.expIdx] == '(';
if (flag14)
{
this.tokType = ComputeEngineTokenType.TkFunction;
}
else
{
this.tokType = ComputeEngineTokenType.TkVariable;
this.ReplaceVariable();
}
}
else
{
this.tokType = ComputeEngineTokenType.TkVariable;
this.ReplaceVariable();
}
}
}
else
{
bool flag15 = char.IsDigit(this.exp[this.expIdx]);
if (flag15)
{
while (!this.IsDelim(this.exp[this.expIdx]))
{
this.token += this.exp[this.expIdx].ToString();
this.expIdx++;
bool flag16 = this.expIdx >= this.exp.Length;
if (flag16)
{
break;
}
}
this.tokType = ComputeEngineTokenType.TkNumber;
}
else
{
bool flag17 = this.exp[this.expIdx] == '"' || this.exp[this.expIdx] == '\'';
if (!flag17)
{
throw new ComputeEngineParserException("计算表达式定义非法符号" + this.exp[this.expIdx].ToString() + "！");
}
this.expIdx++;
while (this.exp[this.expIdx] != '"' && this.exp[this.expIdx] != '\'')
{
this.token += this.exp[this.expIdx].ToString();
this.expIdx++;
bool flag18 = this.expIdx > this.exp.Length;
if (flag18)
{
break;
}
}
this.expIdx++;
this.tokType = ComputeEngineTokenType.TkString;
}
}
}
}
}
}
