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C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html

This commit is contained in:
Arash Partow 2014-07-03 07:40:16 +10:00
parent f0525af667
commit 7a51d35c90
1 changed files with 68 additions and 22 deletions
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90
exprtk.hpp
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@ -12159,6 +12159,9 @@ namespace exprtk
};
template <typename T>
class function_compositor;
template <typename T>
class expression
{
@ -12171,13 +12174,34 @@ namespace exprtk
{
enum data_type
{
e_unknown,
e_expr,
e_unknown ,
e_expr ,
e_vecholder,
e_data,
e_data ,
e_vecdata
};
struct data_pack
{
data_pack()
: pointer(0),
type(e_unknown),
size(0)
{}
data_pack(void* ptr, data_type dt, std::size_t sz = 0)
: pointer(ptr),
type(dt),
size(sz)
{}
void* pointer;
data_type type;
std::size_t size;
};
typedef std::vector<data_pack> local_data_list_t;
expression_holder()
: ref_count(0),
expr(0)
@ -12199,18 +12223,18 @@ namespace exprtk
{
for (std::size_t i = 0; i < local_data_list.size(); ++i)
{
switch (local_data_list[i].second)
switch (local_data_list[i].type)
{
case e_expr : delete reinterpret_cast<expression_ptr>(local_data_list[i].first);
case e_expr : delete reinterpret_cast<expression_ptr>(local_data_list[i].pointer);
break;
case e_vecholder : delete reinterpret_cast<vector_holder_ptr>(local_data_list[i].first);
case e_vecholder : delete reinterpret_cast<vector_holder_ptr>(local_data_list[i].pointer);
break;
case e_data : delete (T*)(local_data_list[i].first);
case e_data : delete (T*)(local_data_list[i].pointer);
break;
case e_vecdata : delete [] (T*)(local_data_list[i].first);
case e_vecdata : delete [] (T*)(local_data_list[i].pointer);
break;
default : break;
@ -12221,7 +12245,7 @@ namespace exprtk
std::size_t ref_count;
expression_ptr expr;
std::vector<std::pair<void*,data_type> > local_data_list;
local_data_list_t local_data_list;
};
public:
@ -12249,8 +12273,10 @@ namespace exprtk
{
delete expression_holder_;
}
expression_holder_ = 0;
}
expression_holder_ = e.expression_holder_;
expression_holder_->ref_count++;
symbol_table_ = e.symbol_table_;
@ -12266,7 +12292,7 @@ namespace exprtk
inline bool operator!() const
{
return (
(0 == expression_holder_) ||
(0 == expression_holder_ ) ||
(0 == expression_holder_->expr)
);
}
@ -12279,8 +12305,10 @@ namespace exprtk
{
delete expression_holder_;
}
expression_holder_ = 0;
}
return *this;
}
@ -12343,6 +12371,7 @@ namespace exprtk
delete expression_holder_;
}
}
expression_holder_ = new expression_holder(expr);
}
}
@ -12355,8 +12384,9 @@ namespace exprtk
{
expression_holder_->
local_data_list.push_back(
std::make_pair(reinterpret_cast<void*>(expr),
expression_holder::e_expr));
typename expression<T>::expression_holder::
data_pack(reinterpret_cast<void*>(expr),
expression_holder::e_expr));
}
}
}
@ -12369,8 +12399,9 @@ namespace exprtk
{
expression_holder_->
local_data_list.push_back(
std::make_pair(reinterpret_cast<void*>(vec_holder),
expression_holder::e_vecholder));
typename expression<T>::expression_holder::
data_pack(reinterpret_cast<void*>(vec_holder),
expression_holder::e_vecholder));
}
}
}
@ -12383,18 +12414,33 @@ namespace exprtk
{
expression_holder_->
local_data_list.push_back(
std::make_pair(reinterpret_cast<void*>(data),
vectype ? expression_holder::e_vecdata :
expression_holder::e_data));
typename expression<T>::expression_holder::
data_pack(reinterpret_cast<void*>(data),
vectype ? expression_holder::e_vecdata :
expression_holder::e_data));
}
}
}
inline typename expression_holder::local_data_list_t local_data_list()
{
if (expression_holder_)
{
return expression_holder_->local_data_list;
}
else
{
static typename expression_holder::local_data_list_t null_local_data_list;
return null_local_data_list;
}
}
expression_holder* expression_holder_;
symbol_table<T> symbol_table_;
friend class parser<T>;
friend class expression_helper<T>;
friend class function_compositor<T>;
};
template <typename T>
@ -12476,12 +12522,12 @@ namespace exprtk
switch (mode)
{
case e_unknown : return std::string("Unknown Error");
case e_syntax : return std::string("Syntax Error");
case e_token : return std::string("Token Error");
case e_syntax : return std::string("Syntax Error" );
case e_token : return std::string("Token Error" );
case e_numeric : return std::string("Numeric Error");
case e_symtab : return std::string("Symbol Error");
case e_lexer : return std::string("Lexer Error");
case e_helper : return std::string("Helper Error");
case e_symtab : return std::string("Symbol Error" );
case e_lexer : return std::string("Lexer Error" );
case e_helper : return std::string("Helper Error" );
default : return std::string("Unknown Error");
}
}