1 //===-- STLUtils.h ----------------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef liblldb_STLUtils_h_
11 #define liblldb_STLUtils_h_
12 
13 #include <string.h>
14 
15 #include <map>
16 #include <ostream>
17 #include <vector>
18 
19 
20 //----------------------------------------------------------------------
21 // C string less than compare function object
22 //----------------------------------------------------------------------
23 struct CStringCompareFunctionObject {
operatorCStringCompareFunctionObject24   bool operator()(const char *s1, const char *s2) const {
25     return strcmp(s1, s2) < 0;
26   }
27 };
28 
29 //----------------------------------------------------------------------
30 // C string equality function object (binary predicate).
31 //----------------------------------------------------------------------
32 struct CStringEqualBinaryPredicate {
operatorCStringEqualBinaryPredicate33   bool operator()(const char *s1, const char *s2) const {
34     return strcmp(s1, s2) == 0;
35   }
36 };
37 
38 //----------------------------------------------------------------------
39 // Templated type for finding an entry in a std::map<F,S> whose value is equal
40 // to something
41 //----------------------------------------------------------------------
42 template <class F, class S> class ValueEquals {
43 public:
ValueEquals(const S & val)44   ValueEquals(const S &val) : second_value(val) {}
45 
46   // Compare the second item
operator()47   bool operator()(std::pair<const F, S> elem) {
48     return elem.second == second_value;
49   }
50 
51 private:
52   S second_value;
53 };
54 
55 template <class T>
56 inline void PrintAllCollectionElements(std::ostream &s, const T &coll,
57                                        const char *header_cstr = nullptr,
58                                        const char *separator_cstr = " ") {
59   typename T::const_iterator pos;
60 
61   if (header_cstr)
62     s << header_cstr;
63   for (pos = coll.begin(); pos != coll.end(); ++pos) {
64     s << *pos << separator_cstr;
65   }
66   s << std::endl;
67 }
68 
69 // The function object below can be used to delete a STL container that
70 // contains C++ object pointers.
71 //
72 // Usage: std::for_each(vector.begin(), vector.end(), for_each_delete());
73 
74 struct for_each_cplusplus_delete {
operatorfor_each_cplusplus_delete75   template <typename T> void operator()(T *ptr) { delete ptr; }
76 };
77 
78 typedef std::vector<std::string> STLStringArray;
79 typedef std::vector<const char *> CStringArray;
80 
81 #endif // liblldb_STLUtils_h_
82