summaryrefslogtreecommitdiff
path: root/Lib/php/director.swg
blob: 06eeb73b012a42ae9a8231cc11d1306a596f2863 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/* -----------------------------------------------------------------------------
 * director.swg
 *
 * This file contains support for director classes so that PHP proxy
 * methods can be called from C++.
 * ----------------------------------------------------------------------------- */

#ifndef SWIG_DIRECTOR_PHP_HEADER_
#define SWIG_DIRECTOR_PHP_HEADER_

#include <string>
#include <exception>
#include <map>

/*
  Use -DSWIG_DIRECTOR_STATIC if you prefer to avoid the use of the
  'Swig' namespace. This could be useful for multi-modules projects.
*/
#ifdef SWIG_DIRECTOR_STATIC
/* Force anonymous (static) namespace */
#define Swig
#endif

namespace Swig {

  /* memory handler */
  struct GCItem {
    virtual ~GCItem() {
    }

    virtual int get_own() const {
      return 0;
    }
  };

  struct GCItem_var {
    GCItem_var(GCItem *item = 0) : _item(item) {
    }

    GCItem_var& operator=(GCItem *item) {
      GCItem *tmp = _item;
      _item = item;
      delete tmp;
      return *this;
    }

    ~GCItem_var() {
      delete _item;
    }

    GCItem * operator->() const {
      return _item;
    }

    private:
    GCItem *_item;
  };

  struct GCItem_Object : GCItem {
    GCItem_Object(int own) : _own(own) {
    }

    virtual ~GCItem_Object() {
    }

    int get_own() const {
      return _own;
    }

    private:
    int _own;
  };

  template <typename Type>
  struct GCItem_T : GCItem {
    GCItem_T(Type *ptr) : _ptr(ptr) {
    }

    virtual ~GCItem_T() {
      delete _ptr;
    }

    private:
    Type *_ptr;
  };

  class Director {
    protected:
      zval *swig_self;
      typedef std::map<void *, GCItem_var> swig_ownership_map;
      mutable swig_ownership_map swig_owner;
#ifdef ZTS
      // Store the ZTS context so it's available when C++ calls back to PHP.
      void *** swig_zts_ctx;
#endif
    public:
      Director(zval *self TSRMLS_DC) : swig_self(self) {
        TSRMLS_SET_CTX(swig_zts_ctx);
      }

      bool swig_is_overridden_method(char *cname, char *lc_fname) {
        TSRMLS_FETCH_FROM_CTX(swig_zts_ctx);
        zend_class_entry **ce;
        zend_function *mptr;

        if (zend_lookup_class(cname, strlen(cname), &ce TSRMLS_CC) != SUCCESS) {
          return false;
        }
        if (zend_hash_find(&(*ce)->function_table, lc_fname, strlen(lc_fname) + 1, (void **) &mptr) != SUCCESS) {
          return false;
        }
        // common.scope points to the declaring class
        return strcmp(mptr->common.scope->name, cname);
      }

      template <typename Type>
      void swig_acquire_ownership(Type *vptr) const {
        if (vptr) {
          swig_owner[vptr] = new GCItem_T<Type>(vptr);
        }
      }
  };

  /* base class for director exceptions */
  class DirectorException : public std::exception {
  protected:
    std::string swig_msg;
  public:
    DirectorException(int code, const char *hdr, const char *msg TSRMLS_DC) : swig_msg(hdr) {
      if (msg[0]) {
        swig_msg += " ";
        swig_msg += msg;
      }
      SWIG_ErrorCode() = code;
      SWIG_ErrorMsg() = swig_msg.c_str();
    }

    virtual ~DirectorException() throw() {
    }

    const char *what() const throw() {
      return swig_msg.c_str();
    }

    static void raise(int code, const char *hdr, const char *msg TSRMLS_DC) {
      throw DirectorException(code, hdr, msg TSRMLS_CC);
    }
  };

  /* attempt to call a pure virtual method via a director method */
  class DirectorPureVirtualException : public DirectorException {
  public:
    DirectorPureVirtualException(const char *msg TSRMLS_DC)
      : DirectorException(E_ERROR, "SWIG director pure virtual method called", msg TSRMLS_CC) {
    }

    static void raise(const char *msg TSRMLS_DC) {
      throw DirectorPureVirtualException(msg TSRMLS_CC);
    }
  };

  /* any php exception that occurs during a director method call */
  class DirectorMethodException : public DirectorException
  {
  public:
    DirectorMethodException(const char *msg TSRMLS_DC)
      : DirectorException(E_ERROR, "SWIG director method error", msg TSRMLS_CC) {
    }

    static void raise(const char *msg TSRMLS_DC) {
      throw DirectorMethodException(msg TSRMLS_CC);
    }
  };
}

// DirectorMethodException() is documented to be callable with no parameters
// so use a macro to insert TSRMLS_CC so any ZTS context gets passed.
#define DirectorMethodException() DirectorMethodException("" TSRMLS_CC)

#endif