1 %{
2
3 /*
4 * phpdbg_parser.y
5 * (from php-src root)
6 * flex sapi/phpdbg/dev/phpdbg_lexer.l
7 * bison sapi/phpdbg/dev/phpdbg_parser.y
8 */
9
10 #include "phpdbg.h"
11 #include "phpdbg_cmd.h"
12 #include "phpdbg_utils.h"
13 #include "phpdbg_cmd.h"
14 #include "phpdbg_prompt.h"
15
16 #define YYSTYPE phpdbg_param_t
17
18 #include "phpdbg_parser.h"
19 #include "phpdbg_lexer.h"
20
21 #undef yyerror
22 static int yyerror(void ***tsrm_ls, const char *msg);
23
24 ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
25
26 %}
27
28 %pure-parser
29 %error-verbose
30
31 %code requires {
32 #include "phpdbg.h"
33 #ifndef YY_TYPEDEF_YY_SCANNER_T
34 #define YY_TYPEDEF_YY_SCANNER_T
35 typedef void* yyscan_t;
36 #endif
37 }
38
39 %parse-param { void *tsrm_ls }
40
41 %output "sapi/phpdbg/phpdbg_parser.c"
42 %defines "sapi/phpdbg/phpdbg_parser.h"
43
44 %token T_EVAL "eval"
45 %token T_RUN "run"
46 %token T_SHELL "shell"
47 %token T_IF "if (condition)"
48 %token T_TRUTHY "truthy (true, on, yes or enabled)"
49 %token T_FALSY "falsy (false, off, no or disabled)"
50 %token T_STRING "string (some input, perhaps)"
51 %token T_COLON ": (colon)"
52 %token T_DCOLON ":: (double colon)"
53 %token T_POUND "# (pound sign)"
54 %token T_PROTO "protocol (file://)"
55 %token T_DIGITS "digits (numbers)"
56 %token T_LITERAL "literal (string)"
57 %token T_ADDR "address"
58 %token T_OPCODE "opcode"
59 %token T_ID "identifier (command or function name)"
60 %token T_INPUT "input (input string or data)"
61 %token T_UNEXPECTED "input"
62
63 %% /* Rules */
64
65 input
66 : parameters
67 | full_expression { phpdbg_stack_push(PHPDBG_G(parser_stack), &$1); }
68 | /* nothing */
69 ;
70
71 parameters
72 : parameter { phpdbg_stack_push(PHPDBG_G(parser_stack), &$1); }
73 | parameters parameter { phpdbg_stack_push(PHPDBG_G(parser_stack), &$2); }
74 ;
75
76 parameter
77 : T_ID T_COLON T_DIGITS {
78 $$.type = FILE_PARAM;
79 $$.file.name = $2.str;
80 $$.file.line = $3.num;
81 }
82 | T_ID T_COLON T_POUND T_DIGITS {
83 $$.type = NUMERIC_FILE_PARAM;
84 $$.file.name = $1.str;
85 $$.file.line = $4.num;
86 }
87 | T_PROTO T_ID T_COLON T_DIGITS {
88 $$.type = FILE_PARAM;
89 $$.file.name = malloc($1.len + $2.len + 1);
90 if ($$.file.name) {
91 memcpy(&$$.file.name[0], $1.str, $1.len);
92 memcpy(&$$.file.name[$1.len], $2.str, $2.len);
93 $$.file.name[$1.len + $2.len] = '\0';
94 }
95 $$.file.line = $4.num;
96 }
97 | T_PROTO T_ID T_COLON T_POUND T_DIGITS {
98 $$.type = NUMERIC_FILE_PARAM;
99 $$.file.name = malloc($1.len + $2.len + 1);
100 if ($$.file.name) {
101 memcpy(&$$.file.name[0], $1.str, $1.len);
102 memcpy(&$$.file.name[$1.len], $2.str, $2.len);
103 $$.file.name[$1.len + $2.len] = '\0';
104 }
105 $$.file.line = $5.num;
106 }
107 | T_ID T_DCOLON T_ID {
108 $$.type = METHOD_PARAM;
109 $$.method.class = $1.str;
110 $$.method.name = $3.str;
111 }
112 | T_ID T_DCOLON T_ID T_POUND T_DIGITS {
113 $$.type = NUMERIC_METHOD_PARAM;
114 $$.method.class = $1.str;
115 $$.method.name = $3.str;
116 $$.num = $5.num;
117 }
118 | T_ID T_POUND T_DIGITS {
119 $$.type = NUMERIC_FUNCTION_PARAM;
120 $$.str = $1.str;
121 $$.len = $1.len;
122 $$.num = $3.num;
123 }
124 | T_IF T_INPUT {
125 $$.type = COND_PARAM;
126 $$.str = $2.str;
127 $$.len = $2.len;
128 }
129 | T_OPCODE { $$ = $1; }
130 | T_ADDR { $$ = $1; }
131 | T_LITERAL { $$ = $1; }
132 | T_TRUTHY { $$ = $1; }
133 | T_FALSY { $$ = $1; }
134 | T_DIGITS { $$ = $1; }
135 | T_ID { $$ = $1; }
136 ;
137
138 full_expression
139 : T_EVAL T_INPUT {
140 $$.type = EVAL_PARAM;
141 $$.str = $2.str;
142 $$.len = $2.len;
143 }
144 | T_SHELL T_INPUT {
145 $$.type = SHELL_PARAM;
146 $$.str = $2.str;
147 $$.len = $2.len;
148 }
149 | T_RUN {
150 $$.type = RUN_PARAM;
151 $$.len = 0;
152 }
153 | T_RUN T_INPUT {
154 $$.type = RUN_PARAM;
155 $$.str = $2.str;
156 $$.len = $2.len;
157 }
158 ;
159
160 %%
161
162 static int yyerror(void ***tsrm_ls, const char *msg) {
163 phpdbg_error("Parse Error: %s", msg);
164
165 {
166 const phpdbg_param_t *top = PHPDBG_G(parser_stack);
167
168 while (top) {
169 phpdbg_param_debug(top, "--> ");
170 top = top->next;
171 }
172 }
173 return 0;
174 }
175
phpdbg_do_parse(phpdbg_param_t * stack,char * input TSRMLS_DC)176 int phpdbg_do_parse(phpdbg_param_t *stack, char *input TSRMLS_DC) {
177 phpdbg_init_lexer(stack, input TSRMLS_CC);
178
179 #ifdef ZTS
180 return yyparse(TSRMLS_C);
181 #else
182 return yyparse(NULL);
183 #endif
184 }
185
