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cd6415f1a9
# RFC http://wiki.php.net/rfc/horizontalreuse#traits_-_reuse_of_behavior # Ok, here we go, I guess that will result in more discussion, which is fine # by me. But now, the patch is here, and properly archived. # # See below a list of notes to the patch, it also includes a list of # points which should be fixed # # Internals of the Traits Patch # ----------------------------- # # Open TODOs # """""""""" # # - Reflection API # - support for traits for internal classes # - currently destroy_zend_class does not handle that case # # Introduced Structures # """"""""""""""""""""" # # Data structures to encode the composition information specified in the # source: # - zend_trait_method_reference # - zend_trait_precedence # - zend_trait_alias # # Changes # """"""" # # zend_class_entry # - uses NULL terminated lists of pointers for # - trait_aliases # - trait_precedences # - do you prefer an explicit counter? # - the information is only necessary during class composition # but might be interesting for reflection # - did not want to blow up class further with not really necessary length counters # # added keywords # - trait # - insteadof # # Added opcodes # ZEND_ADD_TRAIT # - similar to ZEND_ADD_INTERFACE # - adds the trait to the list of traits of a class, no actual composition done # ZEND_BIND_TRAITS # - emitted in zend_do_end_class_declaration # - concludes the class definition and will initiate the trait composition # when the class definition is encountered during runtime # # Added Flags # ZEND_ACC_TRAIT = 0x120 # ZEND_ACC_IMPLEMENT_TRAITS = 0x400000 # ZEND_FETCH_CLASS_TRAIT = 14 # # zend_vm_execute.h # - not sure whether the handler initialization (ZEND_ADD_TRAIT_SPEC_HANDLER, # ZEND_BIND_TRAITS_SPEC_HANDLER) is correct, maybe it should be more selective # # zend_compile.c # - refactored do_inherit_method_check # split into do_inherit_method_check and do_inheritance_check_on_method # - added helper functions use a '_' as prefix and are not mentioned in the # headers # - _copy_functions # prepare hash-maps of functions which should be merged into a class # here the aliases are handled # - _merge_functions # builds a hash-table of the methods which need to be added to a class # does the conflict detection # - reused php_runkit_function_copy_ctor # - it is not identical with the original code anymore, needed to update it # think I fixed some bugs, not sure whether all have been reported back to runkit # - has to be renamed, left the name for the moment, to make its origin obvious # - here might be optimization potential # - not sure whether everything needs to be copied # - copying the literals might be broken # - added it since the literals array is freed by efree and gave problems # with doubled frees # - all immutable parts of the zend_op array should not be copied # - am not sure which parts are immutable # - and not sure how to avoid doubled frees on the same arrays on shutdown # - _merge_functions_to_class # does the final merging with the target class to handle inherited # and overridden methods # - small helper for NULL terminated lists # zend_init_list, zend_add_to_list # # zend_language_parser.y # - reused class definition for traits # - there should be something with regard to properties # - if they get explicitly defined, it might be worthwhile to # check that there are no collisions with other traits in a composition # (however, I would not introduce elaborate language features to control that # but a notice for such conflicts might be nice to the developers)
158 lines
7.9 KiB
C
158 lines
7.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2010 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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| Dmitry Stogov <dmitry@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#define ZEND_NOP 0
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#define ZEND_ADD 1
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#define ZEND_SUB 2
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#define ZEND_MUL 3
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#define ZEND_DIV 4
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#define ZEND_MOD 5
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#define ZEND_SL 6
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#define ZEND_SR 7
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#define ZEND_CONCAT 8
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#define ZEND_BW_OR 9
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#define ZEND_BW_AND 10
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#define ZEND_BW_XOR 11
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#define ZEND_BW_NOT 12
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#define ZEND_BOOL_NOT 13
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#define ZEND_BOOL_XOR 14
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#define ZEND_IS_IDENTICAL 15
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#define ZEND_IS_NOT_IDENTICAL 16
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#define ZEND_IS_EQUAL 17
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#define ZEND_IS_NOT_EQUAL 18
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#define ZEND_IS_SMALLER 19
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#define ZEND_IS_SMALLER_OR_EQUAL 20
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#define ZEND_CAST 21
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#define ZEND_QM_ASSIGN 22
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#define ZEND_ASSIGN_ADD 23
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#define ZEND_ASSIGN_SUB 24
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#define ZEND_ASSIGN_MUL 25
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#define ZEND_ASSIGN_DIV 26
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#define ZEND_ASSIGN_MOD 27
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#define ZEND_ASSIGN_SL 28
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#define ZEND_ASSIGN_SR 29
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#define ZEND_ASSIGN_CONCAT 30
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#define ZEND_ASSIGN_BW_OR 31
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#define ZEND_ASSIGN_BW_AND 32
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#define ZEND_ASSIGN_BW_XOR 33
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#define ZEND_PRE_INC 34
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#define ZEND_PRE_DEC 35
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#define ZEND_POST_INC 36
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#define ZEND_POST_DEC 37
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#define ZEND_ASSIGN 38
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#define ZEND_ASSIGN_REF 39
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#define ZEND_ECHO 40
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#define ZEND_PRINT 41
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#define ZEND_JMP 42
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#define ZEND_JMPZ 43
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#define ZEND_JMPNZ 44
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#define ZEND_JMPZNZ 45
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#define ZEND_JMPZ_EX 46
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#define ZEND_JMPNZ_EX 47
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#define ZEND_CASE 48
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#define ZEND_SWITCH_FREE 49
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#define ZEND_BRK 50
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#define ZEND_CONT 51
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#define ZEND_BOOL 52
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#define ZEND_INIT_STRING 53
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#define ZEND_ADD_CHAR 54
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#define ZEND_ADD_STRING 55
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#define ZEND_ADD_VAR 56
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#define ZEND_BEGIN_SILENCE 57
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#define ZEND_END_SILENCE 58
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#define ZEND_INIT_FCALL_BY_NAME 59
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#define ZEND_DO_FCALL 60
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#define ZEND_DO_FCALL_BY_NAME 61
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#define ZEND_RETURN 62
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#define ZEND_RECV 63
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#define ZEND_RECV_INIT 64
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#define ZEND_SEND_VAL 65
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#define ZEND_SEND_VAR 66
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#define ZEND_SEND_REF 67
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#define ZEND_NEW 68
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#define ZEND_INIT_NS_FCALL_BY_NAME 69
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#define ZEND_FREE 70
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#define ZEND_INIT_ARRAY 71
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#define ZEND_ADD_ARRAY_ELEMENT 72
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#define ZEND_INCLUDE_OR_EVAL 73
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#define ZEND_UNSET_VAR 74
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#define ZEND_UNSET_DIM 75
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#define ZEND_UNSET_OBJ 76
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#define ZEND_FE_RESET 77
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#define ZEND_FE_FETCH 78
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#define ZEND_EXIT 79
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#define ZEND_FETCH_R 80
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#define ZEND_FETCH_DIM_R 81
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#define ZEND_FETCH_OBJ_R 82
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#define ZEND_FETCH_W 83
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#define ZEND_FETCH_DIM_W 84
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#define ZEND_FETCH_OBJ_W 85
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#define ZEND_FETCH_RW 86
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#define ZEND_FETCH_DIM_RW 87
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#define ZEND_FETCH_OBJ_RW 88
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#define ZEND_FETCH_IS 89
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#define ZEND_FETCH_DIM_IS 90
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#define ZEND_FETCH_OBJ_IS 91
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#define ZEND_FETCH_FUNC_ARG 92
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#define ZEND_FETCH_DIM_FUNC_ARG 93
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#define ZEND_FETCH_OBJ_FUNC_ARG 94
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#define ZEND_FETCH_UNSET 95
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#define ZEND_FETCH_DIM_UNSET 96
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#define ZEND_FETCH_OBJ_UNSET 97
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#define ZEND_FETCH_DIM_TMP_VAR 98
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#define ZEND_FETCH_CONSTANT 99
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#define ZEND_GOTO 100
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#define ZEND_EXT_STMT 101
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#define ZEND_EXT_FCALL_BEGIN 102
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#define ZEND_EXT_FCALL_END 103
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#define ZEND_EXT_NOP 104
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#define ZEND_TICKS 105
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#define ZEND_SEND_VAR_NO_REF 106
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#define ZEND_CATCH 107
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#define ZEND_THROW 108
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#define ZEND_FETCH_CLASS 109
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#define ZEND_CLONE 110
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#define ZEND_RETURN_BY_REF 111
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#define ZEND_INIT_METHOD_CALL 112
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#define ZEND_INIT_STATIC_METHOD_CALL 113
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#define ZEND_ISSET_ISEMPTY_VAR 114
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#define ZEND_ISSET_ISEMPTY_DIM_OBJ 115
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#define ZEND_PRE_INC_OBJ 132
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#define ZEND_PRE_DEC_OBJ 133
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#define ZEND_POST_INC_OBJ 134
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#define ZEND_POST_DEC_OBJ 135
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#define ZEND_ASSIGN_OBJ 136
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#define ZEND_INSTANCEOF 138
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#define ZEND_DECLARE_CLASS 139
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#define ZEND_DECLARE_INHERITED_CLASS 140
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#define ZEND_DECLARE_FUNCTION 141
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#define ZEND_RAISE_ABSTRACT_ERROR 142
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#define ZEND_DECLARE_CONST 143
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#define ZEND_ADD_INTERFACE 144
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#define ZEND_DECLARE_INHERITED_CLASS_DELAYED 145
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#define ZEND_VERIFY_ABSTRACT_CLASS 146
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#define ZEND_ASSIGN_DIM 147
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#define ZEND_ISSET_ISEMPTY_PROP_OBJ 148
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#define ZEND_HANDLE_EXCEPTION 149
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#define ZEND_USER_OPCODE 150
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#define ZEND_JMP_SET 152
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#define ZEND_DECLARE_LAMBDA_FUNCTION 153
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#define ZEND_ADD_TRAIT 154
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#define ZEND_BIND_TRAITS 155
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