public ICLS_Value MakeValue(object value)
{
CLS_Value_Null v = new CLS_Value_Null();
return(v);
}
//不出Block,必须一次解析完,括号为优先级
public bool Compiler_Expression(IList <Token> tlist, CLS_Content content, int pos, int posend, out ICLS_Expression value)
{
if (pos > posend)
{
value = null;
return(false);
}
int begin = pos;
value = null;
List <ICLS_Expression> values = new List <ICLS_Expression>();
do
{
if (tlist[begin].type == TokenType.COMMENT)
{
begin++;
continue;
}
if (tlist[begin].type == TokenType.PUNCTUATION && tlist[begin].text == ";")
{
begin++;
continue;
}
int bdep;
//脱一次壳
int end = FindCodeAny(tlist, ref begin, out bdep);
if (end > posend)
{
end = posend;
}
else if (end < posend)
{
bool bMath = false;
for (int i = end + 1; i <= posend; i++)
{
if (tlist[i].type == TokenType.COMMENT)
{
continue;
}
if (tlist[i].type == TokenType.PUNCTUATION && tlist[i].text == ";")
{
continue;
}
bMath = true;
break;
}
if (bMath)
{
end = posend;
//如果表达式一次搞不完，那肯定是优先级问题
value = Compiler_Expression_Math(tlist, content, begin, posend);
return(true);
}
}
//else
//{
// IList<int> i = SplitExpressionWithOp(tlist, begin, end);
// if (i != null && i.Count > 0)
// {
// value = Compiler_Expression_Math(tlist, begin, posend);
// return true;
// }
//}
int expend = end;
int expbegin = begin;
if (expbegin > expend)
{
return(true);
}
if (expend == expbegin)
{//simple
if (tlist[expbegin].type == TokenType.KEYWORD)
{
if (tlist[expbegin].text == "return")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_Return(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
else if (tlist[expbegin].text == "break")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_Break(tlist, expbegin);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
else if (tlist[expbegin].text == "continue")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_Continue(tlist, expbegin);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
else if (tlist[expbegin].text == "true")
{
CLS_Value_Value <bool> subvalue = new CLS_Value_Value <bool>();
subvalue.value_value = true;
values.Add(subvalue);
}
else if (tlist[expbegin].text == "false")
{
CLS_Value_Value <bool> subvalue = new CLS_Value_Value <bool>();
subvalue.value_value = false;
values.Add(subvalue);
}
else if (tlist[expbegin].text == "null")
{
CLS_Value_Null subvalue = new CLS_Value_Null();
values.Add(subvalue);
}
}
else
{
ICLS_Expression subvalue = Compiler_Expression_Value(tlist[expbegin], expbegin);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
}
else if (bdep == 1) //深层表达式
{
expbegin++;
expend--;
ICLS_Expression subvalue;
bool bsucc = Compiler_Expression(tlist, content, expbegin, expend, out subvalue);
if (bsucc)
{
if (subvalue != null)
{
values.Add(subvalue);
}
}
else
{
return(false);
}
}
else //尝试各种表达式
{
bool bTest = false;
//取反表达式
if (tlist[expbegin].type == TokenType.PUNCTUATION && tlist[expbegin].text == "-")
{
if (tlist[expend].type == TokenType.VALUE)
{//负数
if (expend == expbegin + 1)
{
ICLS_Expression subvalue = Compiler_Expression_SubValue(tlist[expend]);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
else
{
ICLS_Expression subvalue = Compiler_Expression_Math(tlist, content, begin, posend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
}
else
{//负数表达式
ICLS_Expression subvalue = Compiler_Expression_NegativeValue(tlist, content, expbegin + 1, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
}
bTest = true;
}
if (tlist[expbegin].type == TokenType.PUNCTUATION && tlist[expbegin].text == "!")
{//逻辑反表达式
ICLS_Expression subvalue = Compiler_Expression_NegativeLogic(tlist, content, expbegin + 1, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
if (!bTest && tlist[expbegin].type == TokenType.TYPE)
{
if (tlist[expbegin + 1].type == TokenType.IDENTIFIER) //定义表达式或者定义并赋值表达式
{
if (expend == expbegin + 1) //定义表达式
{
ICLS_Expression subvalue = Compiler_Expression_Define(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else if (expend > expbegin + 2 && tlist[expbegin + 2].type == TokenType.PUNCTUATION && tlist[expbegin + 2].text == "=")
{//定义并赋值表达式
ICLS_Expression subvalue = Compiler_Expression_DefineAndSet(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else
{
LogError(tlist, "无法识别的表达式:", expbegin, expend);
return(false);
}
}
else if (tlist[expbegin + 1].type == TokenType.PUNCTUATION && tlist[expbegin + 1].text == ".")
{//静态调用表达式
//if (expend - expbegin > 2)
{
ICLS_Expression subvalue = Compiler_Expression_Math(tlist, content, expbegin, expend);
if (subvalue != null)
{
//subvalue.listParam.Add(subparam);
values.Add(subvalue);
bTest = true;
}
else
{
return(false);
}
}
}
}
if (!bTest && tlist[expbegin].type == TokenType.IDENTIFIER)
{
if (expend == expbegin + 1)//一元表达式
{
ICLS_Expression subvalue = Compiler_Expression_MathSelf(tlist, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
if (!bTest && tlist[expbegin + 1].type == TokenType.PUNCTUATION && tlist[expbegin + 1].text == "=")//赋值表达式
{
ICLS_Expression subvalue = Compiler_Expression_Set(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
//if (!bTest && tlist[expbegin + 1].type == TokenType.PUNCTUATION && tlist[expbegin + 1].text == "(")//函数表达式
//{
// ICLS_Expression subvalue = Compiler_Expression_Function(tlist,content, expbegin, expend);
// if (null == subvalue) return false;
// else
// values.Add(subvalue);
// bTest = true;
//}
//if (!bTest && tlist[expbegin + 1].type == TokenType.PUNCTUATION && tlist[expbegin + 1].text == "[")//函数表达式
//{
// ICLS_Expression subvalue = Compiler_Expression_IndexFind(tlist, content, expbegin, expend);
// if (null == subvalue) return false;
// else
// values.Add(subvalue);
// bTest = true;
//}
}
if (!bTest && (tlist[expbegin].type == TokenType.IDENTIFIER || tlist[expbegin].type == TokenType.VALUE || tlist[expbegin].type == TokenType.STRING))
{
//算数表达式
ICLS_Expression subvalue = Compiler_Expression_Math(tlist, content, expbegin, expend);
if (null != subvalue)
{
values.Add(subvalue);
bTest = true;
}
}
if (!bTest && tlist[expbegin].type == TokenType.KEYWORD)
{
if (tlist[expbegin].text == "for")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_For(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else if (tlist[expbegin].text == "foreach")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_ForEach(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else if (tlist[expbegin].text == "if")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_If(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else if (tlist[expbegin].text == "return")
{
ICLS_Expression subvalue = Compiler_Expression_Loop_Return(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else if (tlist[expbegin].text == "trace")
{
ICLS_Expression subvalue = Compiler_Expression_FunctionTrace(tlist, content, expbegin, expend);
if (null == subvalue)
{
return(false);
}
else
{
values.Add(subvalue);
}
bTest = true;
}
else if (tlist[expbegin].text == "true" || tlist[expbegin].text == "false" || tlist[expbegin].text == "null")
{
//算数表达式
ICLS_Expression subvalue = Compiler_Expression_Math(tlist, content, expbegin, expend);
if (null != subvalue)
{
values.Add(subvalue);
bTest = true;
}
}
else if (tlist[expbegin].text == "new")
{
//new 表达式
if (tlist[expbegin + 1].type == TokenType.TYPE)
{
ICLS_Expression subvalue = Compiler_Expression_FunctionNew(tlist, content, pos, posend);
values.Add(subvalue);
bTest = true;
}
}
else
{
LogError(tlist, "无法识别的表达式:", expbegin, expend);
return(false);
}
}
if (!bTest)
{
LogError(tlist, "无法识别的表达式:", expbegin, expend);
return(false);
}
}
begin = end + 1;
}while (begin <= posend);
if (values.Count == 1)
{
value = values[0];
}
else if (values.Count > 1)
{
LogError(tlist, "异常表达式", pos, posend);
}
return(true);
}