| 1 | // |
1 | // |
| 2 | // cfperl.h perl interface |
2 | // cfperl.h perl interface |
| 3 | // |
3 | // |
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4 | #ifndef CFPERL_H__ |
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5 | #define CFPERL_H__ |
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6 | |
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7 | struct pl; |
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8 | struct object; |
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9 | struct mapstruct; |
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10 | |
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11 | void cfperl_init (); |
| 5 | void cfperl_main (); |
12 | void cfperl_main (); |
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13 | |
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14 | // could have used templates, but a more traditional C api |
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15 | // uses more explicit typing which is ok for this purpose. |
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16 | enum data_type |
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17 | { |
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18 | DT_END, // no further arguments |
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19 | DT_AV, // perl-only av that needs to be flattened out |
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20 | DT_INT, |
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21 | DT_INT64, |
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22 | DT_DOUBLE, |
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23 | DT_STRING, // 0-terminated string |
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24 | DT_DATA, // string + length |
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25 | DT_OBJECT, |
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26 | DT_MAP, |
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27 | DT_PLAYER, |
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28 | DT_ARCH, |
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29 | DT_PARTY, |
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30 | DT_REGION, |
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31 | |
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32 | NUM_DATA_TYPES |
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33 | }; |
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34 | |
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35 | enum event_klass |
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36 | { |
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37 | KLASS_NONE, |
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38 | KLASS_GLOBAL, |
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39 | KLASS_PLAYER, |
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40 | KLASS_OBJECT, |
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41 | KLASS_MAP, |
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42 | }; |
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43 | |
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44 | enum event_type |
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45 | { |
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46 | # define def(klass,name) EVENT_ ## klass ## _ ## name, |
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47 | # include "eventinc.h" |
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48 | # undef def |
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49 | NUM_EVENT_TYPES |
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50 | }; |
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51 | |
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52 | #define ARG_AV(o) DT_AV , static_cast<AV *> (o) |
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53 | #define ARG_INT(v) DT_INT , static_cast<int> (v) |
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54 | #define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v) |
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55 | #define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v) |
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56 | #define ARG_STRING(v) DT_STRING, static_cast<const char *> (v) |
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57 | #define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), (l) |
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58 | #define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<struct object *> (o) |
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59 | #define ARG_MAP(o) DT_MAP , (void *)static_cast<struct mapstruct *> (o) |
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60 | #define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<struct pl *> (o) |
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61 | #define ARG_ARCH(o) DT_ARCH , (void *)static_cast<struct archetype *> (o) |
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62 | #define ARG_PARTY(o) DT_PARTY , (void *)static_cast<struct party *> (o) |
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63 | #define ARG_REGION(o) DT_REGION, (void *)static_cast<struct region *> (o) |
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64 | |
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65 | // the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension |
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66 | |
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67 | // all these return true when the normal event processing should be skipped (if any) |
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68 | #define INVOKE_(event, ...) cfperl_invoke (event, ## __VA_ARGS__, DT_END) |
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69 | |
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70 | #define INVOKE(klass, event, ...) INVOKE_(EVENT_ ## klass ## _ ## event, ## __VA_ARGS__) |
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71 | #define INVOKE_GLOBAL(event, ...) INVOKE_(EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__) |
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72 | #define INVOKE_OBJECT(event, op, ...) INVOKE_(EVENT_ ## OBJECT ## _ ## event, ARG_OBJECT (op), ## __VA_ARGS__) |
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73 | #define INVOKE_PLAYER(event, pl, ...) INVOKE_(EVENT_ ## PLAYER ## _ ## event, ARG_PLAYER (pl), ## __VA_ARGS__) |
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74 | #define INVOKE_MAP(event, map, ...) INVOKE_(EVENT_ ## MAP ## _ ## event, ARG_MAP (map) , ## __VA_ARGS__) |
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75 | |
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76 | //TODO should index into @result |
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77 | #define RESULT(idx,type) cfperl_result_ ## type (idx) |
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78 | #define RESULT_INT(idx) RESULT(idx, INT) |
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79 | |
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80 | bool cfperl_invoke (event_type event, ...); |
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81 | int cfperl_result_INT (int idx); |
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82 | |
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83 | struct attachable_base |
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84 | { |
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85 | void *self, *cb; // CF+ perl self and callback |
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86 | const char *attach; // generic extension attachment information |
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87 | |
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88 | void clear (); // called when free'ing objects |
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89 | void optimise (); // possibly save some memory by destroying unneeded data |
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90 | |
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91 | void attachable_init () |
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92 | { |
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93 | self = cb = 0; |
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94 | attach = 0; |
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95 | } |
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96 | }; |
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97 | |
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98 | // objects attachable from perl (or any other extension) should include or |
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99 | // derive using the curiously recurring template pattern, to avoid |
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100 | // virtual method calls etc. |
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101 | template<class subclass> |
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102 | struct attachable : attachable_base |
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103 | { |
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104 | static data_type get_dt () |
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105 | { |
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106 | subclass::get_dt (); |
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107 | } |
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108 | }; |
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109 | |
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110 | struct object_freezethaw |
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111 | { |
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112 | void *av; |
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113 | FILE *fp; |
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114 | |
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115 | operator FILE *() { return fp; } |
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116 | }; |
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117 | |
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118 | struct object_freezer : object_freezethaw |
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119 | { |
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120 | void *filename; |
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121 | |
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122 | object_freezer (const char *filename); |
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123 | ~object_freezer (); |
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124 | |
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125 | void put (attachable_base *ext); |
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126 | |
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127 | template<class subclass> |
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128 | void put (attachable<subclass> *obj) |
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129 | { |
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130 | put ((attachable_base *)obj); |
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131 | } |
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132 | }; |
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133 | |
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134 | struct object_thawer : object_freezethaw |
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135 | { |
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136 | object_thawer (FILE *fp, const char *filename = 0); |
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137 | ~object_thawer (); |
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138 | |
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139 | void get (data_type type, void *obj, attachable_base *ext, int oid); |
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140 | |
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141 | template<class subclass> |
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142 | void get (attachable<subclass> *obj, int oid) |
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143 | { |
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144 | if (av) |
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145 | get (subclass::get_dt (), (subclass *)obj, obj, oid); |
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146 | } |
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147 | }; |
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148 | |
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149 | #endif |
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150 | |
