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157
ase/awk/rex.c
157
ase/awk/rex.c
@ -1,5 +1,5 @@
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/*
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* $Id: rex.c,v 1.74 2007-03-01 04:31:27 bacon Exp $
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* $Id: rex.c,v 1.75 2007-03-01 07:43:54 bacon Exp $
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*
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* {License}
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*/
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@ -58,6 +58,8 @@ typedef struct matcher_t matcher_t;
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typedef struct match_t match_t;
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typedef struct code_t code_t;
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typedef struct rhdr_t rhdr_t;
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typedef struct bhdr_t bhdr_t;
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typedef struct cshdr_t cshdr_t;
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struct builder_t
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@ -136,6 +138,19 @@ ASE_BEGIN_PACKED_STRUCT (code_t)
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ase_size_t ubound;
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ASE_END_PACKED_STRUCT ()
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/* compiled regular expression header */
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ASE_BEGIN_PACKED_STRUCT (rhdr_t)
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ase_size_t nb; /* number of branches */
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ase_size_t el; /* expression length in bytes */
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ASE_END_PACKED_STRUCT ()
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/* branch header */
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ASE_BEGIN_PACKED_STRUCT (bhdr_t)
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ase_size_t na; /* number of atoms */
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ase_size_t bl; /* branch length in bytes */
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ASE_END_PACKED_STRUCT ()
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/* character set header */
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ASE_BEGIN_PACKED_STRUCT (cshdr_t)
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ase_size_t csc; /* count */
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ase_size_t csl; /* length */
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@ -154,19 +169,6 @@ typedef const ase_byte_t* (*atom_matcher_t) (
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#define ADD_CODE(rex,data,len) \
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do { if (__add_code(rex,data,len) == -1) return -1; } while (0)
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#if defined(__i386)||defined(__i386__)||defined(_M_IX86)||defined(__INTEL__)||defined(_X86_)||defined(__I86__)||defined(__THW_INTEL__)
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#if !defined(__i386)
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#define __i386
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#endif
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#define GET_CODE(rex,pos,type) (*((type*)&(rex)->code.buf[pos]))
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#define SET_CODE(rex,pos,type,code) (GET_CODE(rex,pos,type) = (code))
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#else
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#define GET_CODE(rex,pos,type) __get_code(rex,pos)
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#define SET_CODE(rex,pos,type,code) __set_code(rex,pos,code)
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#endif
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static int __build_pattern (builder_t* rex);
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static int __build_pattern0 (builder_t* rex);
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static int __build_branch (builder_t* rex);
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@ -178,22 +180,6 @@ static int __build_range (builder_t* rex, code_t* cmd);
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static int __next_char (builder_t* rex, int level);
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static int __add_code (builder_t* rex, void* data, ase_size_t len);
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#if !defined(__i386) && !defined(__i386__)
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static ase_size_t __get_code (builder_t* builder, ase_size_t pos)
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{
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ase_size_t code;
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ase_memcpy (&code, &builder->code.buf[pos], ASE_SIZEOF(code));
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return code;
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}
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static void __set_code (builder_t* builder, ase_size_t pos, ase_size_t code)
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{
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ase_memcpy (&builder->code.buf[pos], &code, ASE_SIZEOF(code));
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}
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#endif
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static ase_bool_t __begin_with (
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const ase_char_t* str, ase_size_t len, const ase_char_t* what);
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@ -415,31 +401,16 @@ void ase_awk_freerex (ase_awk_t* awk, void* code)
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ase_bool_t ase_awk_isemptyrex (ase_awk_t* awk, void* code)
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{
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const ase_byte_t* p = code;
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ase_size_t nb, el;
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ASE_AWK_ASSERT (awk, p != ASE_NULL);
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#if defined(__i386) || defined(__i386__)
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nb = *(ase_size_t*)p;
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#else
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ase_memcpy (&nb, p, ASE_SIZEOF(nb));
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#endif
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p += ASE_SIZEOF(nb);
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#if defined(__i386) || defined(__i386__)
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el = *(ase_size_t*)p;
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#else
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ase_memcpy (&el, p, ASE_SIZEOF(el));
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#endif
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p += ASE_SIZEOF(el);
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rhdr_t* rhdr = (rhdr_t*) code;
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ASE_AWK_ASSERT (awk, rhdr != ASE_NULL);
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/* an empty regular expression look like:
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* | expression |
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* | header | branch |
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* | | branch header |
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* | NB(1) | EL(16) | NA(1) | BL(8) | */
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return (nb == 1 && el == ASE_SIZEOF(ase_size_t)*4)? ase_true: ase_false;
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return (rhdr->nb == 1 &&
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rhdr->el == ASE_SIZEOF(ase_size_t)*4)? ase_true: ase_false;
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}
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static int __build_pattern (builder_t* builder)
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@ -464,9 +435,9 @@ static int __build_pattern0 (builder_t* builder)
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ase_size_t zero = 0;
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ase_size_t old_size;
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ase_size_t pos_nb, pos_el;
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rhdr_t* rhdr;
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int n;
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old_size = builder->code.size;
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/* secure space for header and set the header fields to zero */
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@ -485,9 +456,8 @@ static int __build_pattern0 (builder_t* builder)
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return 0;
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}
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/*CODEAT(builder,pos_nb,ase_size_t) += 1;*/
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SET_CODE (builder, pos_nb, ase_size_t,
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GET_CODE (builder, pos_nb, ase_size_t) + 1);
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rhdr = (rhdr_t*)&builder->code.buf[pos_nb];
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rhdr->nb++;
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/* handle subsequent branches if any */
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while (builder->ptn.curc.type == CT_SPECIAL &&
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@ -505,11 +475,13 @@ static int __build_pattern0 (builder_t* builder)
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break;
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}
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SET_CODE (builder, pos_nb, ase_size_t,
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GET_CODE (builder, pos_nb, ase_size_t) + 1);
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rhdr = (rhdr_t*)&builder->code.buf[pos_nb];
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rhdr->nb++;
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}
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SET_CODE (builder, pos_el, ase_size_t, builder->code.size - old_size);
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rhdr = (rhdr_t*)&builder->code.buf[pos_nb];
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rhdr->el = builder->code.size - old_size;
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return 1;
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}
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@ -520,6 +492,7 @@ static int __build_branch (builder_t* builder)
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ase_size_t old_size;
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ase_size_t pos_na, pos_bl;
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code_t* cmd;
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bhdr_t* bhdr;
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old_size = builder->code.size;
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@ -552,11 +525,13 @@ static int __build_branch (builder_t* builder)
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/* n == 0 no bound character. just continue */
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/* n == 1 bound has been applied by build_occurrences */
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SET_CODE (builder, pos_na, ase_size_t,
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GET_CODE (builder, pos_na, ase_size_t) + 1);
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bhdr = (bhdr_t*)&builder->code.buf[pos_na];
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bhdr->na++;
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}
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SET_CODE (builder, pos_bl, ase_size_t, builder->code.size - old_size);
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bhdr = (bhdr_t*)&builder->code.buf[pos_na];
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bhdr->bl = builder->code.size - old_size;
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return (builder->code.size == old_size)? 0: 1;
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}
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@ -670,6 +645,7 @@ static int __build_charset (builder_t* builder, code_t* cmd)
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ase_size_t zero = 0;
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ase_size_t old_size;
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ase_size_t pos_csc, pos_csl;
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cshdr_t* cshdr;
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old_size = builder->code.size;
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@ -762,12 +738,12 @@ static int __build_charset (builder_t* builder, code_t* cmd)
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return -1;
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}
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/*CODEAT(builder,pos_csc,ase_size_t) += 1;*/
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SET_CODE (builder, pos_csc, ase_size_t,
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GET_CODE (builder, pos_csc, ase_size_t) + 1);
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cshdr = (cshdr_t*)&builder->code.buf[pos_csc];
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cshdr->csc++;
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}
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SET_CODE (builder, pos_csl, ase_size_t, builder->code.size - old_size);
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cshdr = (cshdr_t*)&builder->code.buf[pos_csc];
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cshdr->csl = builder->code.size - old_size;
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return 1;
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}
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@ -1049,35 +1025,24 @@ static ase_bool_t __begin_with (
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static const ase_byte_t* __match_pattern (
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matcher_t* matcher, const ase_byte_t* base, match_t* mat)
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{
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const ase_byte_t* p;
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match_t mat2;
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ase_size_t nb, el, i;
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ase_size_t i;
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const ase_byte_t* p;
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rhdr_t* rhdr;
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p = base;
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#if defined(__i386) || defined(__i386__)
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nb = *(ase_size_t*)p;
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#else
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ase_memcpy (&nb, p, ASE_SIZEOF(nb));
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#endif
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p += ASE_SIZEOF(nb);
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#if defined(__i386) || defined(__i386__)
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el = *(ase_size_t*)p;
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#else
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ase_memcpy (&el, p, ASE_SIZEOF(el));
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#endif
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p += ASE_SIZEOF(el);
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rhdr = (rhdr_t*) p; p += ASE_SIZEOF(*rhdr);
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#ifdef DEBUG_REX
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ase_dprintf (
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ASE_T("__match_pattern: NB = %u, EL = %u\n"),
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(unsigned)nb, (unsigned)el);
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(unsigned int)rhdr->nb, (unsigned int)rhdr->el);
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#endif
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mat->matched = ase_false;
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mat->match_len = 0;
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for (i = 0; i < nb; i++)
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for (i = 0; i < rhdr->nb; i++)
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{
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mat2.match_ptr = mat->match_ptr;
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@ -1092,24 +1057,23 @@ static const ase_byte_t* __match_pattern (
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}
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}
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return base + el;
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return base + rhdr->el;
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}
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static const ase_byte_t* __match_branch (
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matcher_t* matcher, const ase_byte_t* base, match_t* mat)
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{
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/*
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* branch body (base+sizeof(NA)+sizeof(BL)---+
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* BL=base+sizeof(NA) ---------+ |
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* base=NA ------+ | |
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/* branch body base+sizeof(NA)+sizeof(BL)-----+
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* BL base+sizeof(NA) ----------+ |
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* base NA ------+ | |
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* | | |
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* |NA(ase_size_t)|BL(ase_size_t)|ATOMS.........|
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*/
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mat->branch = base;
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mat->branch_end = base + *((ase_size_t*)(base+ASE_SIZEOF(ase_size_t)));
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mat->branch_end = base + ((bhdr_t*)base)->bl;
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return __match_branch_body (
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matcher, base+ASE_SIZEOF(ase_size_t)*2, mat);
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matcher, (const ase_byte_t*)((bhdr_t*)base+1), mat);
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}
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static const ase_byte_t* __match_branch_body (
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@ -1796,23 +1760,12 @@ void ase_awk_dprintrex (ase_awk_t* awk, void* rex)
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static const ase_byte_t* __print_pattern (ase_awk_t* awk, const ase_byte_t* p)
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{
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ase_size_t nb, el, i;
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ase_size_t i;
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rhdr_t* rhdr;
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#if defined(__i386) || defined(__i386__)
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nb = *(ase_size_t*)p;
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#else
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ase_memcpy (&nb, p, ASE_SIZEOF(nb));
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#endif
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p += ASE_SIZEOF(nb);
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rhdr = (rhdr_t*)p; p += ASE_SIZEOF(*rhdr);
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#if defined(__i386) || defined(__i386__)
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el = *(ase_size_t*)p;
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#else
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ase_memcpy (&el, p, ASE_SIZEOF(el));
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#endif
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p += ASE_SIZEOF(el);
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for (i = 0; i < nb; i++)
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for (i = 0; i < rhdr->nb; i++)
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{
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if (i != 0) DPRINTF (DCUSTOM, ASE_T("|"));
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p = __print_branch (awk, p);
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