archive/rpcs3
1
0
Fork 0
mirror of https://github.com/RPCS3/rpcs3.git synced 2025-07-16 11:48:36 +12:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

Added stream input to the regular expressions, greatly simplifying the usage (in particular, we no longer have to specify the number of characters to be checked).

Browse source
This commit is contained in:
Jesse Beder 2008-06-27 19:07:30 +00:00
parent 4e435b1321
commit de29068110
4 changed files with 232 additions and 85 deletions
Download patch file Download diff file Expand all files Collapse all files

45
regex.h
View file

@ -2,6 +2,7 @@
#include <vector>
#include <string>
#include <ios>
namespace YAML
{
@ -10,17 +11,55 @@ namespace YAML
// simplified regular expressions
// . Only straightforward matches (no repeated characters)
// . Only matches from start of string
class RegEx {
class RegEx
{
private:
struct Operator {
virtual ~Operator() {}
virtual int Match(const std::string& str, const RegEx& regex) const = 0;
virtual int Match(std::istream& in, const RegEx& regex) const = 0;
};
struct MatchOperator: public Operator {
virtual int Match(const std::string& str, const RegEx& regex) const;
virtual int Match(std::istream& in, const RegEx& regex) const;
};
struct RangeOperator: public Operator {
virtual int Match(const std::string& str, const RegEx& regex) const;
virtual int Match(std::istream& in, const RegEx& regex) const;
};
struct OrOperator: public Operator {
virtual int Match(const std::string& str, const RegEx& regex) const;
virtual int Match(std::istream& in, const RegEx& regex) const;
};
struct NotOperator: public Operator {
virtual int Match(const std::string& str, const RegEx& regex) const;
virtual int Match(std::istream& in, const RegEx& regex) const;
};
struct SeqOperator: public Operator {
virtual int Match(const std::string& str, const RegEx& regex) const;
virtual int Match(std::istream& in, const RegEx& regex) const;
};
public:
friend struct Operator;
RegEx();
RegEx(char ch);
RegEx(char a, char z);
RegEx(const std::string& str, REGEX_OP op = REGEX_SEQ);
RegEx(const std::string& str, REGEX_OP op = REGEX_SEQ);
RegEx(const RegEx& rhs);
~RegEx();
bool Matches(char ch) const;
bool Matches(const std::string& str) const;
bool Matches(std::istream& in) const;
int Match(const std::string& str) const;
int Match(std::istream& in) const;
friend RegEx operator ! (const RegEx& ex);
friend RegEx operator || (const RegEx& ex1, const RegEx& ex2);
@ -28,9 +67,11 @@ namespace YAML
private:
RegEx(REGEX_OP op);
void SetOp();
private:
REGEX_OP m_op;
Operator *m_pOp;
char m_a, m_z;
std::vector <RegEx> m_params;
};