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41b16711 |
1 | #if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING) |
2 | # define DEBUGGING |
3 | #endif |
4 | |
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5 | #define PERL_NO_GET_CONTEXT |
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6 | #include "EXTERN.h" |
7 | #include "perl.h" |
8 | #include "XSUB.h" |
9 | |
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10 | START_EXTERN_C |
11 | |
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12 | extern regexp* my_regcomp (pTHX_ char* exp, char* xend, PMOP* pm); |
13 | extern I32 my_regexec (pTHX_ regexp* prog, char* stringarg, char* strend, |
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14 | char* strbeg, I32 minend, SV* screamer, |
15 | void* data, U32 flags); |
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16 | extern void my_regfree (pTHX_ struct regexp* r); |
17 | extern char* my_re_intuit_start (pTHX_ regexp *prog, SV *sv, char *strpos, |
18 | char *strend, U32 flags, |
19 | struct re_scream_pos_data_s *data); |
20 | extern SV* my_re_intuit_string (pTHX_ regexp *prog); |
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21 | |
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22 | END_EXTERN_C |
23 | |
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24 | /* engine details need to be paired - non debugging, debuggin */ |
25 | #define NEEDS_DEBUGGING 0x01 |
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26 | struct regexp_engine { |
27 | regexp* (*regcomp) (pTHX_ char* exp, char* xend, PMOP* pm); |
28 | I32 (*regexec) (pTHX_ regexp* prog, char* stringarg, char* strend, |
29 | char* strbeg, I32 minend, SV* screamer, |
30 | void* data, U32 flags); |
31 | char* (*re_intuit_start) (pTHX_ regexp *prog, SV *sv, char *strpos, |
32 | char *strend, U32 flags, |
33 | struct re_scream_pos_data_s *data); |
34 | SV* (*re_intuit_string) (pTHX_ regexp *prog); |
35 | void (*regfree) (pTHX_ struct regexp* r); |
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36 | }; |
37 | |
38 | struct regexp_engine engines[] = { |
39 | { Perl_pregcomp, Perl_regexec_flags, Perl_re_intuit_start, |
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40 | Perl_re_intuit_string, Perl_pregfree }, |
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41 | { my_regcomp, my_regexec, my_re_intuit_start, my_re_intuit_string, |
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42 | my_regfree } |
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43 | }; |
44 | |
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45 | #define MY_CXT_KEY "re::_guts" XS_VERSION |
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46 | |
47 | typedef struct { |
48 | int x_oldflag; /* debug flag */ |
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49 | unsigned int x_state; |
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50 | } my_cxt_t; |
51 | |
52 | START_MY_CXT |
53 | |
54 | #define oldflag (MY_CXT.x_oldflag) |
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55 | |
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56 | static void |
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57 | install(pTHX_ unsigned int new_state) |
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58 | { |
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59 | dMY_CXT; |
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60 | const unsigned int states |
61 | = sizeof(engines) / sizeof(struct regexp_engine) -1; |
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62 | if(new_state == MY_CXT.x_state) |
63 | return; |
64 | |
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65 | if (new_state > states) { |
66 | Perl_croak(aTHX_ "panic: re::install state %u is illegal - max is %u", |
67 | new_state, states); |
68 | } |
69 | |
70 | PL_regexecp = engines[new_state].regexec; |
71 | PL_regcompp = engines[new_state].regcomp; |
72 | PL_regint_start = engines[new_state].re_intuit_start; |
73 | PL_regint_string = engines[new_state].re_intuit_string; |
74 | PL_regfree = engines[new_state].regfree; |
75 | |
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76 | if (new_state & NEEDS_DEBUGGING) { |
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77 | PL_colorset = 0; /* Allow reinspection of ENV. */ |
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78 | if (!(MY_CXT.x_state & NEEDS_DEBUGGING)) { |
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79 | /* Debugging is turned on for the first time. */ |
80 | oldflag = PL_debug & DEBUG_r_FLAG; |
81 | PL_debug |= DEBUG_r_FLAG; |
82 | } |
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83 | } else { |
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84 | if (!(MY_CXT.x_state & NEEDS_DEBUGGING)) { |
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85 | if (!oldflag) |
86 | PL_debug &= ~DEBUG_r_FLAG; |
87 | } |
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88 | } |
89 | |
90 | MY_CXT.x_state = new_state; |
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91 | } |
92 | |
93 | MODULE = re PACKAGE = re |
94 | |
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95 | BOOT: |
96 | { |
97 | MY_CXT_INIT; |
98 | } |
99 | |
100 | |
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101 | void |
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102 | install(new_state) |
103 | unsigned int new_state; |
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104 | CODE: |
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105 | install(aTHX_ new_state); |