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/******************************************************************************
* Copyright (c) 2000-2018 Ericsson Telecom AB
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
*
* Contributors:
* Balasko, Jeno
* Raduly, Csaba
* Szalai, Gabor
* Zalanyi, Balazs Andor
*
******************************************************************************/
/**
* Based on pattern_p.y
*/
%{
/*********************************************************************
* C(++) declarations
*********************************************************************/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#if defined(__CYGWIN__) && defined(__clang__)
/* Cygwin's clang 3.0 has its own limits.h, which does not bring in
the system's limits.h unless we define this macro: */
#define __STDC_HOSTED__ 1
#define _GCC_NEXT_LIMITS_H
#endif
#include <limits.h>
#include <regex.h>
#if !defined(RE_DUP_MAX)
/* RE_DUP_MAX is defined in limits.h or regex.h, except on Cygwin 1.5 */
# include <sys/syslimits.h>
#endif
#include "memory.h"
#include "pattern.hh"
#include "Quadruple.hh"
#include "UnicharPattern.hh"
union YYSTYPE;
/* defined in lexer c-file: */
extern int pattern_yylex();
inline int pattern_unilex() { return pattern_yylex(); }
extern void init_pattern_yylex(YYSTYPE*);
struct yy_buffer_state;
extern yy_buffer_state* pattern_yy_scan_string(const char*);
extern void pattern_yy_delete_buffer(yy_buffer_state*);
extern unsigned int get_nof_parentheses();
/* defined in this file: */
/** The converted regexp. */
static char *ret_val;
/** The parser error reporting function. */
static void pattern_unierror(const char *error_str);
static int user_groups;
static bool nocase;
#define YYERROR_VERBOSE
static void yyprint(FILE *file, int type, const YYSTYPE& value);
#define YYPRINT(f,t,v) yyprint(f,t,v)
%}
/*********************************************************************
* Bison declarations
*********************************************************************/
%name-prefix="pattern_uni"
%output="pattern_uni.cc"
%defines
%verbose
%expect 0
%start Pattern
%debug
/*********************************************************************
* The union-type
* Must be kept in sync with the one in pattern_p.y !
*********************************************************************/
%union {
int b; /* boolean */
char c; /* single character */
char *s; /* character string */
unsigned long int u; /* unsigned integer */
struct character_set *set; // used by nonterminals in pattern_p.y
union {
unsigned int value;
#if defined(__sparc__) || defined(__sparc)
struct {
unsigned char group;
unsigned char plane;
unsigned char row;
unsigned char cell;
} comp;
#else
struct {
unsigned char cell;
unsigned char row;
unsigned char plane;
unsigned char group;
} comp;
#endif
} q; // single universal char, used by nonterminals in pattern_uni.y
class QuadSet* qset; // used by nonterminals in pattern_uni.y
}
/*********************************************************************
* Tokens
*********************************************************************/
%token <c> TOK_Char "<ordinary character>"
%token <u> TOK_Number "<number>"
%token <u> TOK_Digit "<digit>"
/*********************************************************************
* Keywords
*********************************************************************/
%token KW_BS_q "\\q"
%token KW_BS_d "\\d"
%token KW_BS_w "\\w"
%token KW_BS_t "\\t"
%token KW_BS_n "\\n"
%token KW_BS_r "\\r"
%token KW_BS_s "\\s"
%token KW_BS_b "\\b"
%token KW_Group_Begin "("
%token KW_Group_End ")"
%token KW_Set_Begin "["
%token KW_Set_Begin_Neg "[^"
%token KW_Set_Begin_Rsbrkt "[]"
%token KW_Set_Begin_Neg_Rsbrkt "[^]"
%token KW_Set_End "]"
%token KW_Set_Dash_End "-]"
/*********************************************************************
* semantic types of nonterminals
*********************************************************************/
%type <b> RE_Set_Begin RE_Set_Begin_Rsbrkt RE_Set_End
%type <q> RE_Set_Range_Char RE_Quadruple
%type <s> RE_Body RE_Elems RE_Alter_Elem RE_Concat_Elem
RE_Multiply_Elem RE_Multiply_Statement RE_Group
RE_OneCharPos
%type <qset> RE_Set RE_Set_Body RE_Set_Elem RE_Set_NoRange_Char
/*********************************************************************
* Destructors
*********************************************************************/
%destructor { Free($$); }
RE_Alter_Elem
RE_Body
RE_Concat_Elem
RE_Elems
RE_Group
RE_Multiply_Elem
RE_Multiply_Statement
RE_OneCharPos
%destructor { delete $$; }
RE_Set
RE_Set_Body
RE_Set_Elem
RE_Set_NoRange_Char
%%
/*********************************************************************
* Grammar
*********************************************************************/
Pattern:
RE_Body {ret_val=$1;}
;
RE_Body:
/* empty */
{
$$ = mcopystr("^$");
}
| RE_Elems
{
if ($1 != NULL) {
$$ = mprintf("^%s$", $1);
Free($1);
} else $$ = mcopystr("^$");
}
;
RE_Elems:
RE_Alter_Elem { $$ = $1; }
| RE_Elems '|' RE_Alter_Elem
{
unsigned int nof_pars = get_nof_parentheses() + (yychar==KW_Group_End ? 1 : 0);
if ($3 != NULL) {
if ($1 != NULL) $$ = mputprintf($1, nof_pars ? "|%s" : "$|^%s", $3);
else $$ = mprintf( nof_pars ? "()|%s" : "()$|^%s" , $3);
Free($3);
} else {
if ($1 != NULL) $$ = mputstr($1, nof_pars ? "|()" : "$|^()");
else $$ = NULL;
}
}
;
RE_Alter_Elem:
RE_Concat_Elem { $$ = $1; }
| RE_Alter_Elem RE_Concat_Elem
{
$$ = mputstr($1, $2);
Free($2);
}
;
RE_Concat_Elem:
RE_Multiply_Elem {$$=$1;}
| RE_Multiply_Elem RE_Multiply_Statement
{
if ($1 != NULL && $2 != NULL) {
$$ = mputstr($1, $2);
Free($2);
} else {
Free($1);
Free($2);
$$ = NULL;
}
}
| '*' {$$=mcopystr("(........)*");}
;
RE_Multiply_Elem:
RE_Group {$$=$1;}
| RE_OneCharPos {$$=$1;}
;
RE_Group:
KW_Group_Begin KW_Group_End
{
user_groups++;
$$ = mcopystr("<)");
}
| KW_Group_Begin RE_Elems KW_Group_End
{
user_groups++;
if ($2 != NULL) {
$$ = mprintf("<%s)", $2);
Free($2);
} else {
$$ = mcopystr("<)");
}
}
;
RE_Multiply_Statement:
'+'
{
$$ = mcopystr("+");
}
| '#' '(' ',' ')'
{
$$ = mcopystr("*");
}
| '#' TOK_Digit
{
if ($2 == 0) {
TTCN_pattern_warning("The number of repetitions is zero: `#0'.");
$$ = NULL;
} else if ($2 == 1) $$ = memptystr();
else {
if ($2 > 9) TTCN_pattern_warning("Internal error: Invalid number of "
"repetitions: `#%lu'.", $2);
$$ = mprintf("{%lu}", $2);
}
}
| '#' '(' TOK_Number ')'
{
if ($3 == 0) {
TTCN_pattern_warning("The number of repetitions is zero: `#(0)'.");
$$ = NULL;
} else if ($3 == 1) $$ = memptystr();
else {
#ifdef RE_DUP_MAX
if ($3 > RE_DUP_MAX) TTCN_pattern_warning("The number of repetitions in "
"`#(%lu)' exceeds the limit allowed by this system (%d).", $3,
RE_DUP_MAX);
#endif
$$ = mprintf("{%lu}", $3);
}
}
| '#' '(' TOK_Number ',' TOK_Number ')'
{
#ifdef RE_DUP_MAX
if ($3 > RE_DUP_MAX) TTCN_pattern_warning("The minimum number of "
"repetitions in `#(%lu,%lu)' exceeds the limit allowed by this system "
"(%d).", $3, $5, RE_DUP_MAX);
if ($5 > RE_DUP_MAX) TTCN_pattern_warning("The maximum number of "
"repetitions in `#(%lu,%lu)' exceeds the limit allowed by this system "
"(%d).", $3, $5, RE_DUP_MAX);
#endif
if ($3 > $5) TTCN_pattern_error("The lower bound is higher than the upper "
"bound in the number of repetitions: `#(%lu,%lu)'.", $3, $5);
if ($3 == $5) {
if ($3 == 0) {
TTCN_pattern_warning("The number of repetitions is zero: `#(0,0)'.");
$$ = NULL;
} else if ($3 == 1) $$ = memptystr();
else {
$$ = mprintf("{%lu}", $3);
}
} else {
if ($3 == 0 && $5 == 1) $$ = mcopystr("?");
else $$ = mprintf("{%lu,%lu}", $3, $5);
}
}
| '#' '(' ',' TOK_Number ')'
{
if ($4 == 0) {
TTCN_pattern_warning("The number of repetitions is zero: `#(,0)'.");
$$ = NULL;
} else {
#ifdef RE_DUP_MAX
if ($4 > RE_DUP_MAX) TTCN_pattern_warning("The maximum number of "
"repetitions in `#(,%lu)' exceeds the limit allowed by this system "
"(%d).", $4, RE_DUP_MAX);
#endif
if ($4 == 1) $$ = mcopystr("?");
else $$ = mprintf("{0,%lu}", $4);
}
}
| '#' '(' TOK_Number ',' ')'
{
if ($3 == 0) $$ = mcopystr("*");
else {
#ifdef RE_DUP_MAX
if ($3 > RE_DUP_MAX) TTCN_pattern_warning("The minimum number of "
"repetitions in `#(%lu,)' exceeds the limit allowed by this system "
"(%d).", $3, RE_DUP_MAX);
#endif
if ($3 == 1) $$ = mcopystr("+");
else $$ = mprintf("{%lu,}", $3);
}
}
;
RE_OneCharPos:
'?' {$$=mcopystr("(........)");}
| KW_BS_d {$$=mcopystr("(AAAAAAD[A-J])");}
| KW_BS_w {$$=mcopystr("(AAAAAAD[A-J]|AAAAAA(E[B-P]|F[A-K])|AAAAAA(G[B-P]|H[A-K]))");}
| KW_BS_t {$$=mcopystr("AAAAAAAJ");}
| KW_BS_n {$$=mcopystr("(AAAAAAA[K-N])");}
| KW_BS_r {$$=mcopystr("AAAAAAAN");}
| KW_BS_s {$$=mcopystr("(AAAAAAA[J-N]|AAAAAACA)");}
| KW_BS_b
{
TTCN_pattern_warning("Metacharacter `\\b' is not supported yet.");
$$ = NULL;
}
| TOK_Char
{
unsigned char c = $1;
if ($1 <= 0) TTCN_pattern_error("Character with code %u "
"(0x%02x) cannot be used in a pattern for type universal charstring.", $1, $1);
$$ = Quad::get_hexrepr(nocase ? tolower(c) : c);
}
| RE_Quadruple
{
$$ = Quad::get_hexrepr(nocase ?
unichar_pattern.convert_quad_to_lowercase($1.value).get_value() : $1.value);
}
| RE_Set
{
if ($1->is_empty()) {
TTCN_pattern_error("Empty character set.");
$$ = NULL;
} else
$$ = $1->generate_posix();
delete $1;
}
;
RE_Set:
/* RE_Set_Begin is 1 for "[^", 0 for "["
* RE_Set_Begin_Rsbrkt is 1 for "[^]", 0 for "[]"
* RE_Set_End is 1 for "-]", 0 for "]"
*/
RE_Set_Begin RE_Set_Body RE_Set_End
{
if ($2 != NULL)
$$ = $2;
else
$$ = new QuadSet();
if ($3 && !$$->add(new Quad('-')))
TTCN_pattern_warning("Duplicate character `-' in the character set.");
if ($1)
$$->set_negate(true);
}
| RE_Set_Begin '-' RE_Set_Body RE_Set_End
{
if ($3 != NULL)
$$ = $3;
else
$$ = new QuadSet();
if (!$$->add(new Quad('-')))
TTCN_pattern_warning("Duplicate character `-' in the character set.");
if ($1)
$$->set_negate(true);
}
| RE_Set_Begin_Rsbrkt RE_Set_Body RE_Set_End
{
if ($2 != NULL)
$$ = $2;
else
$$ = new QuadSet();
if (!$$->add(new Quad(']')))
TTCN_pattern_warning("Duplicate character `]' in the character set.");
if ($3 && !$$->add(new Quad('-')))
TTCN_pattern_warning("Duplicate character `-' in the character set.");
if ($1)
$$->set_negate(true);
}
| RE_Set_Begin_Rsbrkt '-' RE_Set_Range_Char RE_Set_Body RE_Set_End
{
if ($4 != NULL)
$$ = $4;
else
$$ = new QuadSet();
if (static_cast<unsigned int>(']') > $3.value) {
TTCN_pattern_error("Invalid range in the character set: the "
"character code of the lower bound (%u) is higher than that of the "
"upper bound (%u).", ']', static_cast<unsigned int>($3.value));
}
$$->add(new QuadInterval(Quad(']'), Quad($3.value)));
if ($5) {
if (!$$->add(new Quad('-')))
TTCN_pattern_warning("Duplicate character `-' in the character set.");
}
if ($1)
$$->set_negate(true);
}
;
RE_Set_Begin:
KW_Set_Begin { $$ = 0; }
| KW_Set_Begin_Neg { $$ = 1; }
;
RE_Set_Begin_Rsbrkt:
KW_Set_Begin_Rsbrkt { $$ = 0; }
| KW_Set_Begin_Neg_Rsbrkt { $$ = 1; }
;
RE_Set_End:
KW_Set_End { $$ = 0; }
| KW_Set_Dash_End { $$ = 1; }
;
RE_Set_Body:
/* empty */ { $$ = NULL; }
| RE_Set_Body RE_Set_Elem
{
if ($1 != NULL) {
$$ = $1;
$$->join($2);
delete($2);
} else
$$ = $2;
}
;
RE_Set_Elem:
RE_Set_Range_Char
{
$$ = new QuadSet();
$$->add(new Quad($1.value));
}
| RE_Set_NoRange_Char { $$ = $1; }
| RE_Set_Range_Char '-' RE_Set_Range_Char
{
if ($1.value > $3.value) {
TTCN_pattern_error("Invalid range in the character set: the "
"character code of the lower bound (%u) is higher than that of the "
"upper bound (%u).", static_cast<unsigned int>($1.value), static_cast<unsigned int>($3.value));
}
$$ = new QuadSet();
$$->add(new QuadInterval(Quad($1.value), Quad($3.value)));
}
;
RE_Set_Range_Char:
KW_BS_t { $$.value = '\t'; }
| KW_BS_r { $$.value = '\r'; }
| TOK_Char
{
if ($1 <= 0) TTCN_pattern_error("Character with code %u "
"(0x%02x) cannot be used in a pattern for type universal charstring.", $1, $1);
$$.value = nocase ? tolower($1) : $1;
}
| RE_Quadruple { $$.value = nocase ?
unichar_pattern.convert_quad_to_lowercase($1.value).get_value() : $1.value; }
;
RE_Set_NoRange_Char:
KW_BS_d
{
$$ = new QuadSet();
$$->add(new QuadInterval(Quad('0'), Quad('9')));
}
| KW_BS_w
{
$$ = new QuadSet();
$$->add(new QuadInterval(Quad('0'), Quad('9')));
$$->add(new QuadInterval(Quad('A'), Quad('Z')));
$$->add(new QuadInterval(Quad('a'), Quad('z')));
}
| KW_BS_n
{
$$ = new QuadSet();
$$->add(new QuadInterval(Quad('\n'), Quad('\r')));
}
| KW_BS_s
{
$$ = new QuadSet();
$$->add(new QuadInterval(Quad('\t'), Quad('\r')));
$$->add(new Quad(' '));
}
| KW_BS_b
{
$$ = new QuadSet();
TTCN_pattern_error("Metacharacter `\\b' does not make any sense in a "
"character set.");
}
;
RE_Quadruple:
KW_BS_q '{' TOK_Number ',' TOK_Number ',' TOK_Number ',' TOK_Number '}'
{
if ($3 > 127) TTCN_pattern_error("The first number (group) of quadruple "
"`\\q{%lu,%lu,%lu,%lu}' is too large. It should be in the range 0..127 "
"instead of %lu.", $3, $5, $7, $9, $3);
if ($5 > 255) TTCN_pattern_error("The second number (plane) of quadruple "
"`\\q{%lu,%lu,%lu,%lu}' is too large. It should be in the range 0..255 "
"instead of %lu.", $3, $5, $7, $9, $5);
if ($7 > 255) TTCN_pattern_error("The third number (row) of quadruple "
"`\\q{%lu,%lu,%lu,%lu}' is too large. It should be in the range 0..255 "
"instead of %lu.", $3, $5, $7, $9, $7);
if ($9 > 255) TTCN_pattern_error("The fourth number (cell) of quadruple "
"`\\q{%lu,%lu,%lu,%lu}' is too large. It should be in the range 0..255 "
"instead of %lu.", $3, $5, $7, $9, $9);
if ($3 == 0 && $5 == 0 && $7 == 0 && $9 == 0) TTCN_pattern_error("Zero "
"character (i.e. quadruple `\\q{0,0,0,0}') is not supported in a "
"pattern for type universal charstring.");
$$.comp.group = static_cast<unsigned char>($3);
$$.comp.plane = static_cast<unsigned char>($5);
$$.comp.row = static_cast<unsigned char>($7);
$$.comp.cell = static_cast<unsigned char>($9);
}
;
%%
/*********************************************************************
* Interface
*********************************************************************/
char* TTCN_pattern_to_regexp_uni(const char* p_pattern, bool p_nocase, int** groups)
{
/* if you want to debug */
//pattern_unidebug=1;
ret_val=NULL;
user_groups = 0;
nocase = p_nocase;
yy_buffer_state *flex_buffer = pattern_yy_scan_string(p_pattern);
if(flex_buffer == NULL) {
TTCN_pattern_error("Flex buffer creation failed.");
return NULL;
}
init_pattern_yylex(&yylval);
if(pattern_uniparse()) {
Free(ret_val);
ret_val=NULL;
}
pattern_yy_delete_buffer(flex_buffer);
// needed by regexp to find user specified groups
if (user_groups /*&& groups*/) {
if (groups) {
*groups = static_cast<int*>(Malloc(sizeof(int) * (user_groups + 1)));
(*groups)[0] = user_groups;
}
int par = -1, index = 1;
for (size_t i = 0; i < strlen(ret_val); i++) {
if (ret_val[i] == '(') {
par++;
}
if (ret_val[i] == '<') {
ret_val[i] = '(';
par++;
if (groups) (*groups)[index++] = par;
}
}
} else if (groups)
*groups = static_cast<int*>(0);
return ret_val;
}
// Backwards compatibility shim
char* TTCN_pattern_to_regexp_uni(const char* p_pattern, int ere, int** /*groups*/)
{
TTCN_pattern_warning("TTCN_pattern_to_regexp_uni"
"(const char* p_pattern, int ere, int** groups) is deprecated");
if (ere != 1) TTCN_pattern_error(
"BRE is not supported for TTCN_pattern_to_regexp_uni");
return TTCN_pattern_to_regexp(p_pattern);
}
/*********************************************************************
* Static functions
*********************************************************************/
void pattern_unierror(const char *error_str)
{
TTCN_pattern_error("%s", error_str);
}
void yyprint(FILE *file, int type, const YYSTYPE& value)
{
switch (type) {
case TOK_Char:
fprintf(file, "'%c'", value.c);
break;
case TOK_Digit: case TOK_Number:
fprintf(file, "'%lu'", value.u);
break;
default:
break;
}
}
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