#line 1 "psqlscan.c" /*------------------------------------------------------------------------- * * psqlscan.l * lexical scanner for SQL commands * * This lexer used to be part of psql, and that heritage is reflected in * the file name as well as function and typedef names, though it can now * be used by other frontend programs as well. It's also possible to extend * this lexer with a compatible add-on lexer to handle program-specific * backslash commands. * * This code is mainly concerned with determining where the end of a SQL * statement is: we are looking for semicolons that are not within quotes, * comments, or parentheses. The most reliable way to handle this is to * borrow the backend's flex lexer rules, lock, stock, and barrel. The rules * below are (except for a few) the same as the backend's, but their actions * are just ECHO whereas the backend's actions generally do other things. * * XXX The rules in this file must be kept in sync with the backend lexer!!! * * XXX Avoid creating backtracking cases --- see the backend lexer for info. * * See psqlscan_int.h for additional commentary. * * * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION * src/fe_utils/psqlscan.l * *------------------------------------------------------------------------- */ #include "postgres_fe.h" #include "common/logging.h" #include "fe_utils/psqlscan.h" #include "libpq-fe.h" #line 42 "psqlscan.c" #define YY_INT_ALIGNED short int /* A lexical scanner generated by flex */ #define FLEX_SCANNER #define YY_FLEX_MAJOR_VERSION 2 #define YY_FLEX_MINOR_VERSION 6 #define YY_FLEX_SUBMINOR_VERSION 4 #if YY_FLEX_SUBMINOR_VERSION > 0 #define FLEX_BETA #endif #ifdef yy_create_buffer #define psql_yy_create_buffer_ALREADY_DEFINED #else #define yy_create_buffer psql_yy_create_buffer #endif #ifdef yy_delete_buffer #define psql_yy_delete_buffer_ALREADY_DEFINED #else #define yy_delete_buffer psql_yy_delete_buffer #endif #ifdef yy_scan_buffer #define psql_yy_scan_buffer_ALREADY_DEFINED #else #define yy_scan_buffer psql_yy_scan_buffer #endif #ifdef yy_scan_string #define psql_yy_scan_string_ALREADY_DEFINED #else #define yy_scan_string psql_yy_scan_string #endif #ifdef yy_scan_bytes #define psql_yy_scan_bytes_ALREADY_DEFINED #else #define yy_scan_bytes psql_yy_scan_bytes #endif #ifdef yy_init_buffer #define psql_yy_init_buffer_ALREADY_DEFINED #else #define yy_init_buffer psql_yy_init_buffer #endif #ifdef yy_flush_buffer #define psql_yy_flush_buffer_ALREADY_DEFINED #else #define yy_flush_buffer psql_yy_flush_buffer #endif #ifdef yy_load_buffer_state #define psql_yy_load_buffer_state_ALREADY_DEFINED #else #define yy_load_buffer_state psql_yy_load_buffer_state #endif #ifdef yy_switch_to_buffer #define psql_yy_switch_to_buffer_ALREADY_DEFINED #else #define yy_switch_to_buffer psql_yy_switch_to_buffer #endif #ifdef yypush_buffer_state #define psql_yypush_buffer_state_ALREADY_DEFINED #else #define yypush_buffer_state psql_yypush_buffer_state #endif #ifdef yypop_buffer_state #define psql_yypop_buffer_state_ALREADY_DEFINED #else #define yypop_buffer_state psql_yypop_buffer_state #endif #ifdef yyensure_buffer_stack #define psql_yyensure_buffer_stack_ALREADY_DEFINED #else #define yyensure_buffer_stack psql_yyensure_buffer_stack #endif #ifdef yylex #define psql_yylex_ALREADY_DEFINED #else #define yylex psql_yylex #endif #ifdef yyrestart #define psql_yyrestart_ALREADY_DEFINED #else #define yyrestart psql_yyrestart #endif #ifdef yylex_init #define psql_yylex_init_ALREADY_DEFINED #else #define yylex_init psql_yylex_init #endif #ifdef yylex_init_extra #define psql_yylex_init_extra_ALREADY_DEFINED #else #define yylex_init_extra psql_yylex_init_extra #endif #ifdef yylex_destroy #define psql_yylex_destroy_ALREADY_DEFINED #else #define yylex_destroy psql_yylex_destroy #endif #ifdef yyget_debug #define psql_yyget_debug_ALREADY_DEFINED #else #define yyget_debug psql_yyget_debug #endif #ifdef yyset_debug #define psql_yyset_debug_ALREADY_DEFINED #else #define yyset_debug psql_yyset_debug #endif #ifdef yyget_extra #define psql_yyget_extra_ALREADY_DEFINED #else #define yyget_extra psql_yyget_extra #endif #ifdef yyset_extra #define psql_yyset_extra_ALREADY_DEFINED #else #define yyset_extra psql_yyset_extra #endif #ifdef yyget_in #define psql_yyget_in_ALREADY_DEFINED #else #define yyget_in psql_yyget_in #endif #ifdef yyset_in #define psql_yyset_in_ALREADY_DEFINED #else #define yyset_in psql_yyset_in #endif #ifdef yyget_out #define psql_yyget_out_ALREADY_DEFINED #else #define yyget_out psql_yyget_out #endif #ifdef yyset_out #define psql_yyset_out_ALREADY_DEFINED #else #define yyset_out psql_yyset_out #endif #ifdef yyget_leng #define psql_yyget_leng_ALREADY_DEFINED #else #define yyget_leng psql_yyget_leng #endif #ifdef yyget_text #define psql_yyget_text_ALREADY_DEFINED #else #define yyget_text psql_yyget_text #endif #ifdef yyget_lineno #define psql_yyget_lineno_ALREADY_DEFINED #else #define yyget_lineno psql_yyget_lineno #endif #ifdef yyset_lineno #define psql_yyset_lineno_ALREADY_DEFINED #else #define yyset_lineno psql_yyset_lineno #endif #ifdef yyget_column #define psql_yyget_column_ALREADY_DEFINED #else #define yyget_column psql_yyget_column #endif #ifdef yyset_column #define psql_yyset_column_ALREADY_DEFINED #else #define yyset_column psql_yyset_column #endif #ifdef yywrap #define psql_yywrap_ALREADY_DEFINED #else #define yywrap psql_yywrap #endif #ifdef yyget_lval #define psql_yyget_lval_ALREADY_DEFINED #else #define yyget_lval psql_yyget_lval #endif #ifdef yyset_lval #define psql_yyset_lval_ALREADY_DEFINED #else #define yyset_lval psql_yyset_lval #endif #ifdef yyalloc #define psql_yyalloc_ALREADY_DEFINED #else #define yyalloc psql_yyalloc #endif #ifdef yyrealloc #define psql_yyrealloc_ALREADY_DEFINED #else #define yyrealloc psql_yyrealloc #endif #ifdef yyfree #define psql_yyfree_ALREADY_DEFINED #else #define yyfree psql_yyfree #endif /* First, we deal with platform-specific or compiler-specific issues. */ /* begin standard C headers. */ #include #include #include #include /* end standard C headers. */ /* flex integer type definitions */ #ifndef FLEXINT_H #define FLEXINT_H /* C99 systems have . Non-C99 systems may or may not. */ #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h, * if you want the limit (max/min) macros for int types. */ #ifndef __STDC_LIMIT_MACROS #define __STDC_LIMIT_MACROS 1 #endif #include typedef int8_t flex_int8_t; typedef uint8_t flex_uint8_t; typedef int16_t flex_int16_t; typedef uint16_t flex_uint16_t; typedef int32_t flex_int32_t; typedef uint32_t flex_uint32_t; #else typedef signed char flex_int8_t; typedef short int flex_int16_t; typedef int flex_int32_t; typedef unsigned char flex_uint8_t; typedef unsigned short int flex_uint16_t; typedef unsigned int flex_uint32_t; /* Limits of integral types. */ #ifndef INT8_MIN #define INT8_MIN (-128) #endif #ifndef INT16_MIN #define INT16_MIN (-32767-1) #endif #ifndef INT32_MIN #define INT32_MIN (-2147483647-1) #endif #ifndef INT8_MAX #define INT8_MAX (127) #endif #ifndef INT16_MAX #define INT16_MAX (32767) #endif #ifndef INT32_MAX #define INT32_MAX (2147483647) #endif #ifndef UINT8_MAX #define UINT8_MAX (255U) #endif #ifndef UINT16_MAX #define UINT16_MAX (65535U) #endif #ifndef UINT32_MAX #define UINT32_MAX (4294967295U) #endif #ifndef SIZE_MAX #define SIZE_MAX (~(size_t)0) #endif #endif /* ! C99 */ #endif /* ! FLEXINT_H */ /* begin standard C++ headers. */ /* TODO: this is always defined, so inline it */ #define yyconst const #if defined(__GNUC__) && __GNUC__ >= 3 #define yynoreturn __attribute__((__noreturn__)) #else #define yynoreturn #endif /* Returned upon end-of-file. */ #define YY_NULL 0 /* Promotes a possibly negative, possibly signed char to an * integer in range [0..255] for use as an array index. */ #define YY_SC_TO_UI(c) ((YY_CHAR) (c)) /* An opaque pointer. */ #ifndef YY_TYPEDEF_YY_SCANNER_T #define YY_TYPEDEF_YY_SCANNER_T typedef void* yyscan_t; #endif /* For convenience, these vars (plus the bison vars far below) are macros in the reentrant scanner. */ #define yyin yyg->yyin_r #define yyout yyg->yyout_r #define yyextra yyg->yyextra_r #define yyleng yyg->yyleng_r #define yytext yyg->yytext_r #define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno) #define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column) #define yy_flex_debug yyg->yy_flex_debug_r /* Enter a start condition. This macro really ought to take a parameter, * but we do it the disgusting crufty way forced on us by the ()-less * definition of BEGIN. */ #define BEGIN yyg->yy_start = 1 + 2 * /* Translate the current start state into a value that can be later handed * to BEGIN to return to the state. The YYSTATE alias is for lex * compatibility. */ #define YY_START ((yyg->yy_start - 1) / 2) #define YYSTATE YY_START /* Action number for EOF rule of a given start state. */ #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) /* Special action meaning "start processing a new file". */ #define YY_NEW_FILE yyrestart( yyin , yyscanner ) #define YY_END_OF_BUFFER_CHAR 0 /* Size of default input buffer. */ #ifndef YY_BUF_SIZE #ifdef __ia64__ /* On IA-64, the buffer size is 16k, not 8k. * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case. * Ditto for the __ia64__ case accordingly. */ #define YY_BUF_SIZE 32768 #else #define YY_BUF_SIZE 16384 #endif /* __ia64__ */ #endif /* The state buf must be large enough to hold one state per character in the main buffer. */ #define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type)) #ifndef YY_TYPEDEF_YY_BUFFER_STATE #define YY_TYPEDEF_YY_BUFFER_STATE typedef struct yy_buffer_state *YY_BUFFER_STATE; #endif #ifndef YY_TYPEDEF_YY_SIZE_T #define YY_TYPEDEF_YY_SIZE_T typedef size_t yy_size_t; #endif #define EOB_ACT_CONTINUE_SCAN 0 #define EOB_ACT_END_OF_FILE 1 #define EOB_ACT_LAST_MATCH 2 #define YY_LESS_LINENO(n) #define YY_LINENO_REWIND_TO(ptr) /* Return all but the first "n" matched characters back to the input stream. */ #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ int yyless_macro_arg = (n); \ YY_LESS_LINENO(yyless_macro_arg);\ *yy_cp = yyg->yy_hold_char; \ YY_RESTORE_YY_MORE_OFFSET \ yyg->yy_c_buf_p = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ YY_DO_BEFORE_ACTION; /* set up yytext again */ \ } \ while ( 0 ) #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner ) #ifndef YY_STRUCT_YY_BUFFER_STATE #define YY_STRUCT_YY_BUFFER_STATE struct yy_buffer_state { FILE *yy_input_file; char *yy_ch_buf; /* input buffer */ char *yy_buf_pos; /* current position in input buffer */ /* Size of input buffer in bytes, not including room for EOB * characters. */ int yy_buf_size; /* Number of characters read into yy_ch_buf, not including EOB * characters. */ int yy_n_chars; /* Whether we "own" the buffer - i.e., we know we created it, * and can realloc() it to grow it, and should free() it to * delete it. */ int yy_is_our_buffer; /* Whether this is an "interactive" input source; if so, and * if we're using stdio for input, then we want to use getc() * instead of fread(), to make sure we stop fetching input after * each newline. */ int yy_is_interactive; /* Whether we're considered to be at the beginning of a line. * If so, '^' rules will be active on the next match, otherwise * not. */ int yy_at_bol; int yy_bs_lineno; /**< The line count. */ int yy_bs_column; /**< The column count. */ /* Whether to try to fill the input buffer when we reach the * end of it. */ int yy_fill_buffer; int yy_buffer_status; #define YY_BUFFER_NEW 0 #define YY_BUFFER_NORMAL 1 /* When an EOF's been seen but there's still some text to process * then we mark the buffer as YY_EOF_PENDING, to indicate that we * shouldn't try reading from the input source any more. We might * still have a bunch of tokens to match, though, because of * possible backing-up. * * When we actually see the EOF, we change the status to "new" * (via yyrestart()), so that the user can continue scanning by * just pointing yyin at a new input file. */ #define YY_BUFFER_EOF_PENDING 2 }; #endif /* !YY_STRUCT_YY_BUFFER_STATE */ /* We provide macros for accessing buffer states in case in the * future we want to put the buffer states in a more general * "scanner state". * * Returns the top of the stack, or NULL. */ #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \ ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \ : NULL) /* Same as previous macro, but useful when we know that the buffer stack is not * NULL or when we need an lvalue. For internal use only. */ #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] void yyrestart ( FILE *input_file , yyscan_t yyscanner ); void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner ); YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner ); void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner ); void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner ); void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner ); void yypop_buffer_state ( yyscan_t yyscanner ); static void yyensure_buffer_stack ( yyscan_t yyscanner ); static void yy_load_buffer_state ( yyscan_t yyscanner ); static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner ); #define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner) YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner ); YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner ); YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner ); void *yyalloc ( yy_size_t , yyscan_t yyscanner ); void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner ); void yyfree ( void * , yyscan_t yyscanner ); #define yy_new_buffer yy_create_buffer #define yy_set_interactive(is_interactive) \ { \ if ( ! YY_CURRENT_BUFFER ){ \ yyensure_buffer_stack (yyscanner); \ YY_CURRENT_BUFFER_LVALUE = \ yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \ } \ YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ } #define yy_set_bol(at_bol) \ { \ if ( ! YY_CURRENT_BUFFER ){\ yyensure_buffer_stack (yyscanner); \ YY_CURRENT_BUFFER_LVALUE = \ yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \ } \ YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ } #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) /* Begin user sect3 */ #define psql_yywrap(yyscanner) (/*CONSTCOND*/1) #define YY_SKIP_YYWRAP typedef flex_uint8_t YY_CHAR; typedef int yy_state_type; #define yytext_ptr yytext_r static const flex_int16_t yy_nxt[][40] = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 23, 24, 25, 26, 25, 27, 28, 29, 30, 31, 29, 32, 33, 34, 31, 31, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 44, 29, 45, 46, 47, 45, 48, 49, 50, 51, 49, 50, 24, 24 }, { 23, 24, 25, 26, 25, 27, 28, 29, 30, 31, 29, 32, 33, 34, 31, 31, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 44, 29, 45, 46, 47, 45, 48, 49, 50, 51, 49, 50, 24, 24 }, { 23, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 53, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52 }, { 23, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 53, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52 }, { 23, 54, 54, 54, 54, 55, 54, 55, 54, 55, 55, 54, 54, 54, 56, 55, 54, 55, 54, 57, 54, 54, 54, 54, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54 }, { 23, 54, 54, 54, 54, 55, 54, 55, 54, 55, 55, 54, 54, 54, 56, 55, 54, 55, 54, 57, 54, 54, 54, 54, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54 }, { 23, 58, 58, 58, 58, 58, 59, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58 }, { 23, 58, 58, 58, 58, 58, 59, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58 }, { 23, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 53, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60 }, { 23, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 53, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60 }, { 23, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 62, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61 }, { 23, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 62, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61 }, { 23, 63, 64, 65, 66, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 67, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63 }, { 23, 63, 64, 65, 66, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 67, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63 }, { 23, 68, 68, 69, 68, 68, 68, 68, 68, 68, 68, 70, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 71, 68, 68, 68, 68 }, { 23, 68, 68, 69, 68, 68, 68, 68, 68, 68, 68, 70, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 71, 68, 68, 68, 68 }, { 23, 72, 72, 73, 72, 72, 72, 72, 74, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72 }, { 23, 72, 72, 73, 72, 72, 72, 72, 74, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72 }, { 23, 58, 58, 58, 58, 58, 75, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58 }, { 23, 58, 58, 58, 58, 58, 75, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58 }, { 23, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 62, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 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-154, -154, -154, -154, -154, -154, 154, 154, -154, -154, -154, -154, -154, -154, 154, 154, 154, 154, 154, 154, 154, -154, 154, 154, -154, -154 }, { 23, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155, -155 }, { 23, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156, -156 }, { 23, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, -157, 157, 157, -157, -157, -157, -157, -157, -157, 157, 157, 157, 157, 157, 157, 157, -157, 157, 157, -157, 167 }, { 23, 158, 159, 160, 160, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 161, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158 }, { 23, 158, 159, 160, 160, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 161, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158 }, { 23, -160, 119, 119, 119, -160, -160, -160, -160, -160, -160, 120, -160, -160, -160, -160, -160, 121, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160, -160 }, { 23, 158, 159, 160, 160, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 168, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158 }, { 23, 147, 148, 117, 117, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 162, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147 }, { 23, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163, -163 }, { 23, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, -164, 169, 169, -164, -164, -164, -164, -164, -164, 169, 169, 169, -164, -164, -164, -164, -164, -164, -164, -164, -164 }, { 23, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, -165, 170, 170, -165, -165, -165, -165, -165, -165, 170, 170, 170, -165, -165, -165, -165, -165, -165, -165, -165, -165 }, { 23, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166, -166 }, { 23, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167, -167 }, { 23, 158, 159, 160, 160, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 168, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158, 158 }, { 23, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, -169, 171, 171, -169, -169, -169, -169, -169, -169, 171, 171, 171, -169, -169, -169, -169, -169, -169, -169, -169, -169 }, { 23, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, -170, 172, 172, -170, -170, -170, -170, -170, -170, 172, 172, 172, -170, -170, -170, -170, -170, -170, -170, -170, -170 }, { 23, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, -171, 173, 173, -171, -171, -171, -171, -171, -171, 173, 173, 173, -171, -171, -171, -171, -171, -171, -171, -171, -171 }, { 23, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172, -172 }, { 23, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, -173, 174, 174, -173, -173, -173, -173, -173, -173, 174, 174, 174, -173, -173, -173, -173, -173, -173, -173, -173, -173 }, { 23, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, -174, 175, 175, -174, -174, -174, -174, -174, -174, 175, 175, 175, -174, -174, -174, -174, -174, -174, -174, -174, -174 }, { 23, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, -175, 172, 172, -175, -175, -175, -175, -175, -175, 172, 172, 172, -175, -175, -175, -175, -175, -175, -175, -175, -175 }, } ; static yy_state_type yy_get_previous_state ( yyscan_t yyscanner ); static yy_state_type yy_try_NUL_trans ( yy_state_type current_state , yyscan_t yyscanner); static int yy_get_next_buffer ( yyscan_t yyscanner ); static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner ); /* Done after the current pattern has been matched and before the * corresponding action - sets up yytext. */ #define YY_DO_BEFORE_ACTION \ yyg->yytext_ptr = yy_bp; \ yyleng = (int) (yy_cp - yy_bp); \ yyg->yy_hold_char = *yy_cp; \ *yy_cp = '\0'; \ yyg->yy_c_buf_p = yy_cp; #define YY_NUM_RULES 74 #define YY_END_OF_BUFFER 75 /* This struct is not used in this scanner, but its presence is necessary. */ struct yy_trans_info { flex_int32_t yy_verify; flex_int32_t yy_nxt; }; static const flex_int16_t yy_accept[176] = { 0, 0, 0, 10, 10, 0, 0, 0, 0, 9, 9, 0, 0, 18, 18, 0, 0, 0, 0, 0, 0, 0, 0, 75, 73, 1, 1, 64, 35, 64, 73, 63, 13, 50, 51, 63, 63, 63, 63, 66, 63, 52, 63, 63, 63, 72, 72, 72, 72, 72, 72, 54, 10, 16, 5, 5, 6, 6, 40, 37, 9, 21, 16, 19, 18, 18, 18, 18, 22, 22, 16, 28, 32, 32, 34, 38, 1, 64, 49, 29, 65, 30, 1, 43, 67, 2, 67, 66, 70, 60, 59, 55, 42, 44, 62, 46, 48, 45, 47, 72, 8, 14, 12, 41, 11, 53, 10, 5, 7, 4, 3, 40, 39, 9, 21, 20, 18, 18, 18, 18, 17, 18, 18, 22, 25, 26, 24, 24, 25, 32, 31, 33, 30, 1, 1, 2, 68, 67, 71, 69, 60, 59, 61, 36, 15, 3, 18, 18, 18, 18, 26, 24, 24, 27, 33, 57, 56, 61, 18, 18, 18, 18, 18, 26, 24, 24, 27, 58, 18, 24, 24, 24, 23, 24, 24, 24 } ; static const YY_CHAR yy_ec[256] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 2, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 22, 23, 24, 25, 26, 27, 7, 28, 29, 28, 28, 30, 28, 31, 31, 31, 31, 31, 31, 31, 32, 31, 31, 31, 31, 31, 31, 33, 31, 31, 34, 31, 31, 16, 35, 16, 9, 31, 7, 28, 29, 28, 28, 30, 28, 31, 31, 31, 31, 31, 31, 31, 32, 31, 31, 31, 31, 31, 31, 36, 31, 31, 37, 31, 31, 38, 7, 39, 7, 1, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31 } ; /* The intent behind this definition is that it'll catch * any uses of REJECT which flex missed. */ #define REJECT reject_used_but_not_detected #define yymore() yymore_used_but_not_detected #define YY_MORE_ADJ 0 #define YY_RESTORE_YY_MORE_OFFSET #line 1 "psqlscan.l" #line 44 "psqlscan.l" /* LCOV_EXCL_START */ #include "fe_utils/psqlscan_int.h" /* * We must have a typedef YYSTYPE for yylex's first argument, but this lexer * doesn't presently make use of that argument, so just declare it as int. */ typedef int YYSTYPE; /* * Set the type of yyextra; we use it as a pointer back to the containing * PsqlScanState. */ #define YY_EXTRA_TYPE PsqlScanState /* Return values from yylex() */ #define LEXRES_EOL 0 /* end of input */ #define LEXRES_SEMI 1 /* command-terminating semicolon found */ #define LEXRES_BACKSLASH 2 /* backslash command start */ #define ECHO psqlscan_emit(cur_state, yytext, yyleng) /* * Work around a bug in flex 2.5.35: it emits a couple of functions that * it forgets to emit declarations for. Since we use -Wmissing-prototypes, * this would cause warnings. Providing our own declarations should be * harmless even when the bug gets fixed. */ extern int psql_yyget_column(yyscan_t yyscanner); extern void psql_yyset_column(int column_no, yyscan_t yyscanner); #line 2018 "psqlscan.c" #define YY_NO_INPUT 1 /* * All of the following definitions and rules should exactly match * src/backend/parser/scan.l so far as the flex patterns are concerned. * The rule bodies are just ECHO as opposed to what the backend does, * however. (But be sure to duplicate code that affects the lexing process, * such as BEGIN() and yyless().) Also, psqlscan uses a single <> rule * whereas scan.l has a separate one for each exclusive state. */ /* * OK, here is a short description of lex/flex rules behavior. * The longest pattern which matches an input string is always chosen. * For equal-length patterns, the first occurring in the rules list is chosen. * INITIAL is the starting state, to which all non-conditional rules apply. * Exclusive states change parsing rules while the state is active. When in * an exclusive state, only those rules defined for that state apply. * * We use exclusive states for quoted strings, extended comments, * and to eliminate parsing troubles for numeric strings. * Exclusive states: * bit string literal * extended C-style comments * delimited identifiers (double-quoted identifiers) * hexadecimal numeric string * standard quoted strings * quote stop (detect continued strings) * extended quoted strings (support backslash escape sequences) * $foo$ quoted strings * quoted identifier with Unicode escapes * quoted string with Unicode escapes * * Note: we intentionally don't mimic the backend's state; we have * no need to distinguish it from state, and no good way to get out * of it in error cases. The backend just throws yyerror() in those * cases, but that's not an option here. */ /* * In order to make the world safe for Windows and Mac clients as well as * Unix ones, we accept either \n or \r as a newline. A DOS-style \r\n * sequence will be seen as two successive newlines, but that doesn't cause * any problems. Comments that start with -- and extend to the next * newline are treated as equivalent to a single whitespace character. * * NOTE a fine point: if there is no newline following --, we will absorb * everything to the end of the input as a comment. This is correct. Older * versions of Postgres failed to recognize -- as a comment if the input * did not end with a newline. * * XXX perhaps \f (formfeed) should be treated as a newline as well? * * XXX if you change the set of whitespace characters, fix scanner_isspace() * to agree. */ /* * SQL requires at least one newline in the whitespace separating * string literals that are to be concatenated. Silly, but who are we * to argue? Note that {whitespace_with_newline} should not have * after * it, whereas {whitespace} should generally have a * after it... */ /* If we see {quote} then {quotecontinue}, the quoted string continues */ /* * {quotecontinuefail} is needed to avoid lexer backup when we fail to match * {quotecontinue}. It might seem that this could just be {whitespace}*, * but if there's a dash after {whitespace_with_newline}, it must be consumed * to see if there's another dash --- which would start a {comment} and thus * allow continuation of the {quotecontinue} token. */ /* Bit string * It is tempting to scan the string for only those characters * which are allowed. However, this leads to silently swallowed * characters if illegal characters are included in the string. * For example, if xbinside is [01] then B'ABCD' is interpreted * as a zero-length string, and the ABCD' is lost! * Better to pass the string forward and let the input routines * validate the contents. */ /* Hexadecimal number */ /* National character */ /* Quoted string that allows backslash escapes */ /* Extended quote * xqdouble implements embedded quote, '''' */ /* $foo$ style quotes ("dollar quoting") * The quoted string starts with $foo$ where "foo" is an optional string * in the form of an identifier, except that it may not contain "$", * and extends to the first occurrence of an identical string. * There is *no* processing of the quoted text. * * {dolqfailed} is an error rule to avoid scanner backup when {dolqdelim} * fails to match its trailing "$". */ /* Double quote * Allows embedded spaces and other special characters into identifiers. */ /* Quoted identifier with Unicode escapes */ /* Quoted string with Unicode escapes */ /* error rule to avoid backup */ /* C-style comments * * The "extended comment" syntax closely resembles allowable operator syntax. * The tricky part here is to get lex to recognize a string starting with * slash-star as a comment, when interpreting it as an operator would produce * a longer match --- remember lex will prefer a longer match! Also, if we * have something like plus-slash-star, lex will think this is a 3-character * operator whereas we want to see it as a + operator and a comment start. * The solution is two-fold: * 1. append {op_chars}* to xcstart so that it matches as much text as * {operator} would. Then the tie-breaker (first matching rule of same * length) ensures xcstart wins. We put back the extra stuff with yyless() * in case it contains a star-slash that should terminate the comment. * 2. In the operator rule, check for slash-star within the operator, and * if found throw it back with yyless(). This handles the plus-slash-star * problem. * Dash-dash comments have similar interactions with the operator rule. */ /* Assorted special-case operators and operator-like tokens */ /* * These operator-like tokens (unlike the above ones) also match the {operator} * rule, which means that they might be overridden by a longer match if they * are followed by a comment start or a + or - character. Accordingly, if you * add to this list, you must also add corresponding code to the {operator} * block to return the correct token in such cases. (This is not needed in * psqlscan.l since the token value is ignored there.) */ /* * "self" is the set of chars that should be returned as single-character * tokens. "op_chars" is the set of chars that can make up "Op" tokens, * which can be one or more characters long (but if a single-char token * appears in the "self" set, it is not to be returned as an Op). Note * that the sets overlap, but each has some chars that are not in the other. * * If you change either set, adjust the character lists appearing in the * rule for "operator"! */ /* we no longer allow unary minus in numbers. * instead we pass it separately to parser. there it gets * coerced via doNegate() -- Leon aug 20 1999 * * {decimalfail} is used because we would like "1..10" to lex as 1, dot_dot, 10. * * {realfail1} and {realfail2} are added to prevent the need for scanner * backup when the {real} rule fails to match completely. */ /* psql-specific: characters allowed in variable names */ /* * Dollar quoted strings are totally opaque, and no escaping is done on them. * Other quoted strings must allow some special characters such as single-quote * and newline. * Embedded single-quotes are implemented both in the SQL standard * style of two adjacent single quotes "''" and in the Postgres/Java style * of escaped-quote "\'". * Other embedded escaped characters are matched explicitly and the leading * backslash is dropped from the string. * Note that xcstart must appear before operator, as explained above! * Also whitespace (comment) must appear before operator. */ #line 2176 "psqlscan.c" #define INITIAL 0 #define xb 1 #define xc 2 #define xd 3 #define xh 4 #define xq 5 #define xqs 6 #define xe 7 #define xdolq 8 #define xui 9 #define xus 10 #ifndef YY_NO_UNISTD_H /* Special case for "unistd.h", since it is non-ANSI. We include it way * down here because we want the user's section 1 to have been scanned first. * The user has a chance to override it with an option. */ #include #endif #ifndef YY_EXTRA_TYPE #define YY_EXTRA_TYPE void * #endif /* Holds the entire state of the reentrant scanner. */ struct yyguts_t { /* User-defined. Not touched by flex. */ YY_EXTRA_TYPE yyextra_r; /* The rest are the same as the globals declared in the non-reentrant scanner. */ FILE *yyin_r, *yyout_r; size_t yy_buffer_stack_top; /**< index of top of stack. */ size_t yy_buffer_stack_max; /**< capacity of stack. */ YY_BUFFER_STATE * yy_buffer_stack; /**< Stack as an array. */ char yy_hold_char; int yy_n_chars; int yyleng_r; char *yy_c_buf_p; int yy_init; int yy_start; int yy_did_buffer_switch_on_eof; int yy_start_stack_ptr; int yy_start_stack_depth; int *yy_start_stack; yy_state_type yy_last_accepting_state; char* yy_last_accepting_cpos; int yylineno_r; int yy_flex_debug_r; char *yytext_r; int yy_more_flag; int yy_more_len; YYSTYPE * yylval_r; }; /* end struct yyguts_t */ static int yy_init_globals ( yyscan_t yyscanner ); /* This must go here because YYSTYPE and YYLTYPE are included * from bison output in section 1.*/ # define yylval yyg->yylval_r int yylex_init (yyscan_t* scanner); int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner); /* Accessor methods to globals. These are made visible to non-reentrant scanners for convenience. */ int yylex_destroy ( yyscan_t yyscanner ); int yyget_debug ( yyscan_t yyscanner ); void yyset_debug ( int debug_flag , yyscan_t yyscanner ); YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner ); void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner ); FILE *yyget_in ( yyscan_t yyscanner ); void yyset_in ( FILE * _in_str , yyscan_t yyscanner ); FILE *yyget_out ( yyscan_t yyscanner ); void yyset_out ( FILE * _out_str , yyscan_t yyscanner ); int yyget_leng ( yyscan_t yyscanner ); char *yyget_text ( yyscan_t yyscanner ); int yyget_lineno ( yyscan_t yyscanner ); void yyset_lineno ( int _line_number , yyscan_t yyscanner ); int yyget_column ( yyscan_t yyscanner ); void yyset_column ( int _column_no , yyscan_t yyscanner ); YYSTYPE * yyget_lval ( yyscan_t yyscanner ); void yyset_lval ( YYSTYPE * yylval_param , yyscan_t yyscanner ); /* Macros after this point can all be overridden by user definitions in * section 1. */ #ifndef YY_SKIP_YYWRAP #ifdef __cplusplus extern "C" int yywrap ( yyscan_t yyscanner ); #else extern int yywrap ( yyscan_t yyscanner ); #endif #endif #ifndef YY_NO_UNPUT #endif #ifndef yytext_ptr static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner); #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen ( const char * , yyscan_t yyscanner); #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput ( yyscan_t yyscanner ); #else static int input ( yyscan_t yyscanner ); #endif #endif /* Amount of stuff to slurp up with each read. */ #ifndef YY_READ_BUF_SIZE #ifdef __ia64__ /* On IA-64, the buffer size is 16k, not 8k */ #define YY_READ_BUF_SIZE 16384 #else #define YY_READ_BUF_SIZE 8192 #endif /* __ia64__ */ #endif /* Copy whatever the last rule matched to the standard output. */ #ifndef ECHO /* This used to be an fputs(), but since the string might contain NUL's, * we now use fwrite(). */ #define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0) #endif /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, * is returned in "result". */ #ifndef YY_INPUT #define YY_INPUT(buf,result,max_size) \ if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ { \ int c = '*'; \ int n; \ for ( n = 0; n < max_size && \ (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ buf[n] = (char) c; \ if ( c == '\n' ) \ buf[n++] = (char) c; \ if ( c == EOF && ferror( yyin ) ) \ YY_FATAL_ERROR( "input in flex scanner failed" ); \ result = n; \ } \ else \ { \ errno=0; \ while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \ { \ if( errno != EINTR) \ { \ YY_FATAL_ERROR( "input in flex scanner failed" ); \ break; \ } \ errno=0; \ clearerr(yyin); \ } \ }\ \ #endif /* No semi-colon after return; correct usage is to write "yyterminate();" - * we don't want an extra ';' after the "return" because that will cause * some compilers to complain about unreachable statements. */ #ifndef yyterminate #define yyterminate() return YY_NULL #endif /* Number of entries by which start-condition stack grows. */ #ifndef YY_START_STACK_INCR #define YY_START_STACK_INCR 25 #endif /* Report a fatal error. */ #ifndef YY_FATAL_ERROR #define YY_FATAL_ERROR(msg) yy_fatal_error( msg , yyscanner) #endif /* end tables serialization structures and prototypes */ /* Default declaration of generated scanner - a define so the user can * easily add parameters. */ #ifndef YY_DECL #define YY_DECL_IS_OURS 1 extern int yylex \ (YYSTYPE * yylval_param , yyscan_t yyscanner); #define YY_DECL int yylex \ (YYSTYPE * yylval_param , yyscan_t yyscanner) #endif /* !YY_DECL */ /* Code executed at the beginning of each rule, after yytext and yyleng * have been set up. */ #ifndef YY_USER_ACTION #define YY_USER_ACTION #endif /* Code executed at the end of each rule. */ #ifndef YY_BREAK #define YY_BREAK /*LINTED*/break; #endif #define YY_RULE_SETUP \ YY_USER_ACTION /** The main scanner function which does all the work. */ YY_DECL { yy_state_type yy_current_state; char *yy_cp, *yy_bp; int yy_act; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yylval = yylval_param; if ( !yyg->yy_init ) { yyg->yy_init = 1; #ifdef YY_USER_INIT YY_USER_INIT; #endif if ( ! yyg->yy_start ) yyg->yy_start = 1; /* first start state */ if ( ! yyin ) yyin = stdin; if ( ! yyout ) yyout = stdout; if ( ! YY_CURRENT_BUFFER ) { yyensure_buffer_stack (yyscanner); YY_CURRENT_BUFFER_LVALUE = yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); } yy_load_buffer_state( yyscanner ); } { #line 358 "psqlscan.l" #line 362 "psqlscan.l" /* Declare some local variables inside yylex(), for convenience */ PsqlScanState cur_state = yyextra; PQExpBuffer output_buf = cur_state->output_buf; /* * Force flex into the state indicated by start_state. This has a * couple of purposes: it lets some of the functions below set a new * starting state without ugly direct access to flex variables, and it * allows us to transition from one flex lexer to another so that we * can lex different parts of the source string using separate lexers. */ BEGIN(cur_state->start_state); #line 2477 "psqlscan.c" while ( /*CONSTCOND*/1 ) /* loops until end-of-file is reached */ { yy_cp = yyg->yy_c_buf_p; /* Support of yytext. */ *yy_cp = yyg->yy_hold_char; /* yy_bp points to the position in yy_ch_buf of the start of * the current run. */ yy_bp = yy_cp; yy_current_state = yyg->yy_start; yy_match: while ( (yy_current_state = yy_nxt[yy_current_state][ yy_ec[YY_SC_TO_UI(*yy_cp)] ]) > 0 ) ++yy_cp; yy_current_state = -yy_current_state; yy_find_action: yy_act = yy_accept[yy_current_state]; YY_DO_BEFORE_ACTION; do_action: /* This label is used only to access EOF actions. */ switch ( yy_act ) { /* beginning of action switch */ case 1: /* rule 1 can match eol */ YY_RULE_SETUP #line 376 "psqlscan.l" { /* * Note that the whitespace rule includes both true * whitespace and single-line ("--" style) comments. * We suppress whitespace at the start of the query * buffer. We also suppress all single-line comments, * which is pretty dubious but is the historical * behavior. */ if (!(output_buf->len == 0 || yytext[0] == '-')) ECHO; } YY_BREAK case 2: YY_RULE_SETUP #line 389 "psqlscan.l" { cur_state->xcdepth = 0; BEGIN(xc); /* Put back any characters past slash-star; see above */ yyless(2); ECHO; } YY_BREAK case 3: YY_RULE_SETUP #line 398 "psqlscan.l" { cur_state->xcdepth++; /* Put back any characters past slash-star; see above */ yyless(2); ECHO; } YY_BREAK case 4: YY_RULE_SETUP #line 405 "psqlscan.l" { if (cur_state->xcdepth <= 0) BEGIN(INITIAL); else cur_state->xcdepth--; ECHO; } YY_BREAK case 5: /* rule 5 can match eol */ YY_RULE_SETUP #line 413 "psqlscan.l" { ECHO; } YY_BREAK case 6: YY_RULE_SETUP #line 417 "psqlscan.l" { ECHO; } YY_BREAK case 7: YY_RULE_SETUP #line 421 "psqlscan.l" { ECHO; } YY_BREAK /* */ case 8: YY_RULE_SETUP #line 426 "psqlscan.l" { BEGIN(xb); ECHO; } YY_BREAK case 9: /* rule 9 can match eol */ #line 431 "psqlscan.l" case 10: /* rule 10 can match eol */ YY_RULE_SETUP #line 431 "psqlscan.l" { ECHO; } YY_BREAK case 11: YY_RULE_SETUP #line 435 "psqlscan.l" { /* Hexadecimal bit type. * At some point we should simply pass the string * forward to the parser and label it there. * In the meantime, place a leading "x" on the string * to mark it for the input routine as a hex string. */ BEGIN(xh); ECHO; } YY_BREAK case 12: YY_RULE_SETUP #line 446 "psqlscan.l" { yyless(1); /* eat only 'n' this time */ ECHO; } YY_BREAK case 13: YY_RULE_SETUP #line 451 "psqlscan.l" { if (cur_state->std_strings) BEGIN(xq); else BEGIN(xe); ECHO; } YY_BREAK case 14: YY_RULE_SETUP #line 458 "psqlscan.l" { BEGIN(xe); ECHO; } YY_BREAK case 15: YY_RULE_SETUP #line 462 "psqlscan.l" { BEGIN(xus); ECHO; } YY_BREAK case 16: YY_RULE_SETUP #line 467 "psqlscan.l" { /* * When we are scanning a quoted string and see an end * quote, we must look ahead for a possible continuation. * If we don't see one, we know the end quote was in fact * the end of the string. To reduce the lexer table size, * we use a single "xqs" state to do the lookahead for all * types of strings. */ cur_state->state_before_str_stop = YYSTATE; BEGIN(xqs); ECHO; } YY_BREAK case 17: /* rule 17 can match eol */ YY_RULE_SETUP #line 480 "psqlscan.l" { /* * Found a quote continuation, so return to the in-quote * state and continue scanning the literal. Nothing is * added to the literal's contents. */ BEGIN(cur_state->state_before_str_stop); ECHO; } YY_BREAK case 18: /* rule 18 can match eol */ #line 490 "psqlscan.l" case 19: /* rule 19 can match eol */ YY_RULE_SETUP #line 490 "psqlscan.l" { /* * Failed to see a quote continuation. Throw back * everything after the end quote, and handle the string * according to the state we were in previously. */ yyless(0); BEGIN(INITIAL); /* There's nothing to echo ... */ } YY_BREAK case 20: YY_RULE_SETUP #line 501 "psqlscan.l" { ECHO; } YY_BREAK case 21: /* rule 21 can match eol */ YY_RULE_SETUP #line 504 "psqlscan.l" { ECHO; } YY_BREAK case 22: /* rule 22 can match eol */ YY_RULE_SETUP #line 507 "psqlscan.l" { ECHO; } YY_BREAK case 23: YY_RULE_SETUP #line 510 "psqlscan.l" { ECHO; } YY_BREAK case 24: YY_RULE_SETUP #line 513 "psqlscan.l" { ECHO; } YY_BREAK case 25: /* rule 25 can match eol */ YY_RULE_SETUP #line 516 "psqlscan.l" { ECHO; } YY_BREAK case 26: YY_RULE_SETUP #line 519 "psqlscan.l" { ECHO; } YY_BREAK case 27: YY_RULE_SETUP #line 522 "psqlscan.l" { ECHO; } YY_BREAK case 28: YY_RULE_SETUP #line 525 "psqlscan.l" { /* This is only needed for \ just before EOF */ ECHO; } YY_BREAK case 29: YY_RULE_SETUP #line 530 "psqlscan.l" { cur_state->dolqstart = pg_strdup(yytext); BEGIN(xdolq); ECHO; } YY_BREAK case 30: YY_RULE_SETUP #line 535 "psqlscan.l" { /* throw back all but the initial "$" */ yyless(1); ECHO; } YY_BREAK case 31: YY_RULE_SETUP #line 540 "psqlscan.l" { if (strcmp(yytext, cur_state->dolqstart) == 0) { free(cur_state->dolqstart); cur_state->dolqstart = NULL; BEGIN(INITIAL); } else { /* * When we fail to match $...$ to dolqstart, transfer * the $... part to the output, but put back the final * $ for rescanning. Consider $delim$...$junk$delim$ */ yyless(yyleng - 1); } ECHO; } YY_BREAK case 32: /* rule 32 can match eol */ YY_RULE_SETUP #line 558 "psqlscan.l" { ECHO; } YY_BREAK case 33: YY_RULE_SETUP #line 561 "psqlscan.l" { ECHO; } YY_BREAK case 34: YY_RULE_SETUP #line 564 "psqlscan.l" { /* This is only needed for $ inside the quoted text */ ECHO; } YY_BREAK case 35: YY_RULE_SETUP #line 569 "psqlscan.l" { BEGIN(xd); ECHO; } YY_BREAK case 36: YY_RULE_SETUP #line 573 "psqlscan.l" { BEGIN(xui); ECHO; } YY_BREAK case 37: YY_RULE_SETUP #line 577 "psqlscan.l" { BEGIN(INITIAL); ECHO; } YY_BREAK case 38: YY_RULE_SETUP #line 581 "psqlscan.l" { BEGIN(INITIAL); ECHO; } YY_BREAK case 39: YY_RULE_SETUP #line 585 "psqlscan.l" { ECHO; } YY_BREAK case 40: /* rule 40 can match eol */ YY_RULE_SETUP #line 588 "psqlscan.l" { ECHO; } YY_BREAK case 41: YY_RULE_SETUP #line 592 "psqlscan.l" { /* throw back all but the initial u/U */ yyless(1); ECHO; } YY_BREAK case 42: YY_RULE_SETUP #line 598 "psqlscan.l" { ECHO; } YY_BREAK case 43: YY_RULE_SETUP #line 602 "psqlscan.l" { ECHO; } YY_BREAK case 44: YY_RULE_SETUP #line 606 "psqlscan.l" { ECHO; } YY_BREAK case 45: YY_RULE_SETUP #line 610 "psqlscan.l" { ECHO; } YY_BREAK case 46: YY_RULE_SETUP #line 614 "psqlscan.l" { ECHO; } YY_BREAK case 47: YY_RULE_SETUP #line 618 "psqlscan.l" { ECHO; } YY_BREAK case 48: YY_RULE_SETUP #line 622 "psqlscan.l" { ECHO; } YY_BREAK case 49: YY_RULE_SETUP #line 626 "psqlscan.l" { ECHO; } YY_BREAK /* * These rules are specific to psql --- they implement parenthesis * counting and detection of command-ending semicolon. These must * appear before the {self} rule so that they take precedence over it. */ case 50: YY_RULE_SETUP #line 636 "psqlscan.l" { cur_state->paren_depth++; ECHO; } YY_BREAK case 51: YY_RULE_SETUP #line 641 "psqlscan.l" { if (cur_state->paren_depth > 0) cur_state->paren_depth--; ECHO; } YY_BREAK case 52: YY_RULE_SETUP #line 647 "psqlscan.l" { ECHO; if (cur_state->paren_depth == 0 && cur_state->begin_depth == 0) { /* Terminate lexing temporarily */ cur_state->start_state = YY_START; cur_state->identifier_count = 0; return LEXRES_SEMI; } } YY_BREAK /* * psql-specific rules to handle backslash commands and variable * substitution. We want these before {self}, also. */ case 53: YY_RULE_SETUP #line 663 "psqlscan.l" { /* Force a semi-colon or colon into the query buffer */ psqlscan_emit(cur_state, yytext + 1, 1); if (yytext[1] == ';') cur_state->identifier_count = 0; } YY_BREAK case 54: YY_RULE_SETUP #line 670 "psqlscan.l" { /* Terminate lexing temporarily */ cur_state->start_state = YY_START; return LEXRES_BACKSLASH; } YY_BREAK case 55: YY_RULE_SETUP #line 676 "psqlscan.l" { /* Possible psql variable substitution */ char *varname; char *value; varname = psqlscan_extract_substring(cur_state, yytext + 1, yyleng - 1); if (cur_state->callbacks->get_variable) value = cur_state->callbacks->get_variable(varname, PQUOTE_PLAIN, cur_state->cb_passthrough); else value = NULL; if (value) { /* It is a variable, check for recursion */ if (psqlscan_var_is_current_source(cur_state, varname)) { /* Recursive expansion --- don't go there */ pg_log_warning("skipping recursive expansion of variable \"%s\"", varname); /* Instead copy the string as is */ ECHO; } else { /* OK, perform substitution */ psqlscan_push_new_buffer(cur_state, value, varname); /* yy_scan_string already made buffer active */ } free(value); } else { /* * if the variable doesn't exist we'll copy the string * as is */ ECHO; } free(varname); } YY_BREAK case 56: YY_RULE_SETUP #line 722 "psqlscan.l" { psqlscan_escape_variable(cur_state, yytext, yyleng, PQUOTE_SQL_LITERAL); } YY_BREAK case 57: YY_RULE_SETUP #line 727 "psqlscan.l" { psqlscan_escape_variable(cur_state, yytext, yyleng, PQUOTE_SQL_IDENT); } YY_BREAK case 58: YY_RULE_SETUP #line 732 "psqlscan.l" { psqlscan_test_variable(cur_state, yytext, yyleng); } YY_BREAK /* * These rules just avoid the need for scanner backup if one of the * three rules above fails to match completely. */ case 59: YY_RULE_SETUP #line 741 "psqlscan.l" { /* Throw back everything but the colon */ yyless(1); ECHO; } YY_BREAK case 60: YY_RULE_SETUP #line 747 "psqlscan.l" { /* Throw back everything but the colon */ yyless(1); ECHO; } YY_BREAK case 61: YY_RULE_SETUP #line 753 "psqlscan.l" { /* Throw back everything but the colon */ yyless(1); ECHO; } YY_BREAK case 62: YY_RULE_SETUP #line 758 "psqlscan.l" { /* Throw back everything but the colon */ yyless(1); ECHO; } YY_BREAK /* * Back to backend-compatible rules. */ case 63: YY_RULE_SETUP #line 768 "psqlscan.l" { ECHO; } YY_BREAK case 64: YY_RULE_SETUP #line 772 "psqlscan.l" { /* * Check for embedded slash-star or dash-dash; those * are comment starts, so operator must stop there. * Note that slash-star or dash-dash at the first * character will match a prior rule, not this one. */ int nchars = yyleng; char *slashstar = strstr(yytext, "/*"); char *dashdash = strstr(yytext, "--"); if (slashstar && dashdash) { /* if both appear, take the first one */ if (slashstar > dashdash) slashstar = dashdash; } else if (!slashstar) slashstar = dashdash; if (slashstar) nchars = slashstar - yytext; /* * For SQL compatibility, '+' and '-' cannot be the * last char of a multi-char operator unless the operator * contains chars that are not in SQL operators. * The idea is to lex '=-' as two operators, but not * to forbid operator names like '?-' that could not be * sequences of SQL operators. */ if (nchars > 1 && (yytext[nchars - 1] == '+' || yytext[nchars - 1] == '-')) { int ic; for (ic = nchars - 2; ic >= 0; ic--) { char c = yytext[ic]; if (c == '~' || c == '!' || c == '@' || c == '#' || c == '^' || c == '&' || c == '|' || c == '`' || c == '?' || c == '%') break; } if (ic < 0) { /* * didn't find a qualifying character, so remove * all trailing [+-] */ do { nchars--; } while (nchars > 1 && (yytext[nchars - 1] == '+' || yytext[nchars - 1] == '-')); } } if (nchars < yyleng) { /* Strip the unwanted chars from the token */ yyless(nchars); } ECHO; } YY_BREAK case 65: YY_RULE_SETUP #line 839 "psqlscan.l" { ECHO; } YY_BREAK case 66: YY_RULE_SETUP #line 843 "psqlscan.l" { ECHO; } YY_BREAK case 67: YY_RULE_SETUP #line 846 "psqlscan.l" { ECHO; } YY_BREAK case 68: YY_RULE_SETUP #line 849 "psqlscan.l" { /* throw back the .., and treat as integer */ yyless(yyleng - 2); ECHO; } YY_BREAK case 69: YY_RULE_SETUP #line 854 "psqlscan.l" { ECHO; } YY_BREAK case 70: YY_RULE_SETUP #line 857 "psqlscan.l" { /* * throw back the [Ee], and figure out whether what * remains is an {integer} or {decimal}. * (in psql, we don't actually care...) */ yyless(yyleng - 1); ECHO; } YY_BREAK case 71: YY_RULE_SETUP #line 866 "psqlscan.l" { /* throw back the [Ee][+-], and proceed as above */ yyless(yyleng - 2); ECHO; } YY_BREAK case 72: YY_RULE_SETUP #line 873 "psqlscan.l" { /* * We need to track if we are inside a BEGIN .. END block * in a function definition, so that semicolons contained * therein don't terminate the whole statement. Short of * writing a full parser here, the following heuristic * should work. First, we track whether the beginning of * the statement matches CREATE [OR REPLACE] * {FUNCTION|PROCEDURE} */ if (cur_state->identifier_count == 0) memset(cur_state->identifiers, 0, sizeof(cur_state->identifiers)); if (pg_strcasecmp(yytext, "create") == 0 || pg_strcasecmp(yytext, "function") == 0 || pg_strcasecmp(yytext, "procedure") == 0 || pg_strcasecmp(yytext, "or") == 0 || pg_strcasecmp(yytext, "replace") == 0) { if (cur_state->identifier_count < sizeof(cur_state->identifiers)) cur_state->identifiers[cur_state->identifier_count] = pg_tolower((unsigned char) yytext[0]); } cur_state->identifier_count++; if (cur_state->identifiers[0] == 'c' && (cur_state->identifiers[1] == 'f' || cur_state->identifiers[1] == 'p' || (cur_state->identifiers[1] == 'o' && cur_state->identifiers[2] == 'r' && (cur_state->identifiers[3] == 'f' || cur_state->identifiers[3] == 'p'))) && cur_state->paren_depth == 0) { if (pg_strcasecmp(yytext, "begin") == 0) cur_state->begin_depth++; else if (pg_strcasecmp(yytext, "case") == 0) { /* * CASE also ends with END. We only need to track * this if we are already inside a BEGIN. */ if (cur_state->begin_depth >= 1) cur_state->begin_depth++; } else if (pg_strcasecmp(yytext, "end") == 0) { if (cur_state->begin_depth > 0) cur_state->begin_depth--; } } ECHO; } YY_BREAK case 73: YY_RULE_SETUP #line 926 "psqlscan.l" { ECHO; } YY_BREAK case YY_STATE_EOF(INITIAL): case YY_STATE_EOF(xb): case YY_STATE_EOF(xc): case YY_STATE_EOF(xd): case YY_STATE_EOF(xh): case YY_STATE_EOF(xq): case YY_STATE_EOF(xqs): case YY_STATE_EOF(xe): case YY_STATE_EOF(xdolq): case YY_STATE_EOF(xui): case YY_STATE_EOF(xus): #line 930 "psqlscan.l" { if (cur_state->buffer_stack == NULL) { cur_state->start_state = YY_START; return LEXRES_EOL; /* end of input reached */ } /* * We were expanding a variable, so pop the inclusion * stack and keep lexing */ psqlscan_pop_buffer_stack(cur_state); psqlscan_select_top_buffer(cur_state); } YY_BREAK case 74: YY_RULE_SETUP #line 945 "psqlscan.l" YY_FATAL_ERROR( "flex scanner jammed" ); YY_BREAK #line 3344 "psqlscan.c" case YY_END_OF_BUFFER: { /* Amount of text matched not including the EOB char. */ int yy_amount_of_matched_text = (int) (yy_cp - yyg->yytext_ptr) - 1; /* Undo the effects of YY_DO_BEFORE_ACTION. */ *yy_cp = yyg->yy_hold_char; YY_RESTORE_YY_MORE_OFFSET if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW ) { /* We're scanning a new file or input source. It's * possible that this happened because the user * just pointed yyin at a new source and called * yylex(). If so, then we have to assure * consistency between YY_CURRENT_BUFFER and our * globals. Here is the right place to do so, because * this is the first action (other than possibly a * back-up) that will match for the new input source. */ yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL; } /* Note that here we test for yy_c_buf_p "<=" to the position * of the first EOB in the buffer, since yy_c_buf_p will * already have been incremented past the NUL character * (since all states make transitions on EOB to the * end-of-buffer state). Contrast this with the test * in input(). */ if ( yyg->yy_c_buf_p <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] ) { /* This was really a NUL. */ yy_state_type yy_next_state; yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state( yyscanner ); /* Okay, we're now positioned to make the NUL * transition. We couldn't have * yy_get_previous_state() go ahead and do it * for us because it doesn't know how to deal * with the possibility of jamming (and we don't * want to build jamming into it because then it * will run more slowly). */ yy_next_state = yy_try_NUL_trans( yy_current_state , yyscanner); yy_bp = yyg->yytext_ptr + YY_MORE_ADJ; if ( yy_next_state ) { /* Consume the NUL. */ yy_cp = ++yyg->yy_c_buf_p; yy_current_state = yy_next_state; goto yy_match; } else { yy_cp = yyg->yy_c_buf_p; goto yy_find_action; } } else switch ( yy_get_next_buffer( yyscanner ) ) { case EOB_ACT_END_OF_FILE: { yyg->yy_did_buffer_switch_on_eof = 0; if ( yywrap( yyscanner ) ) { /* Note: because we've taken care in * yy_get_next_buffer() to have set up * yytext, we can now set up * yy_c_buf_p so that if some total * hoser (like flex itself) wants to * call the scanner after we return the * YY_NULL, it'll still work - another * YY_NULL will get returned. */ yyg->yy_c_buf_p = yyg->yytext_ptr + YY_MORE_ADJ; yy_act = YY_STATE_EOF(YY_START); goto do_action; } else { if ( ! yyg->yy_did_buffer_switch_on_eof ) YY_NEW_FILE; } break; } case EOB_ACT_CONTINUE_SCAN: yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state( yyscanner ); yy_cp = yyg->yy_c_buf_p; yy_bp = yyg->yytext_ptr + YY_MORE_ADJ; goto yy_match; case EOB_ACT_LAST_MATCH: yyg->yy_c_buf_p = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars]; yy_current_state = yy_get_previous_state( yyscanner ); yy_cp = yyg->yy_c_buf_p; yy_bp = yyg->yytext_ptr + YY_MORE_ADJ; goto yy_find_action; } break; } default: YY_FATAL_ERROR( "fatal flex scanner internal error--no action found" ); } /* end of action switch */ } /* end of scanning one token */ } /* end of user's declarations */ } /* end of yylex */ /* yy_get_next_buffer - try to read in a new buffer * * Returns a code representing an action: * EOB_ACT_LAST_MATCH - * EOB_ACT_CONTINUE_SCAN - continue scanning from current position * EOB_ACT_END_OF_FILE - end of file */ static int yy_get_next_buffer (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; char *source = yyg->yytext_ptr; int number_to_move, i; int ret_val; if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] ) YY_FATAL_ERROR( "fatal flex scanner internal error--end of buffer missed" ); if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) { /* Don't try to fill the buffer, so this is an EOF. */ if ( yyg->yy_c_buf_p - yyg->yytext_ptr - YY_MORE_ADJ == 1 ) { /* We matched a single character, the EOB, so * treat this as a final EOF. */ return EOB_ACT_END_OF_FILE; } else { /* We matched some text prior to the EOB, first * process it. */ return EOB_ACT_LAST_MATCH; } } /* Try to read more data. */ /* First move last chars to start of buffer. */ number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1); for ( i = 0; i < number_to_move; ++i ) *(dest++) = *(source++); if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) /* don't do the read, it's not guaranteed to return an EOF, * just force an EOF */ YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0; else { int num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; while ( num_to_read <= 0 ) { /* Not enough room in the buffer - grow it. */ /* just a shorter name for the current buffer */ YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE; int yy_c_buf_p_offset = (int) (yyg->yy_c_buf_p - b->yy_ch_buf); if ( b->yy_is_our_buffer ) { int new_size = b->yy_buf_size * 2; if ( new_size <= 0 ) b->yy_buf_size += b->yy_buf_size / 8; else b->yy_buf_size *= 2; b->yy_ch_buf = (char *) /* Include room in for 2 EOB chars. */ yyrealloc( (void *) b->yy_ch_buf, (yy_size_t) (b->yy_buf_size + 2) , yyscanner ); } else /* Can't grow it, we don't own it. */ b->yy_ch_buf = NULL; if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" ); yyg->yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset]; num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; } if ( num_to_read > YY_READ_BUF_SIZE ) num_to_read = YY_READ_BUF_SIZE; /* Read in more data. */ YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), yyg->yy_n_chars, num_to_read ); YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars; } if ( yyg->yy_n_chars == 0 ) { if ( number_to_move == YY_MORE_ADJ ) { ret_val = EOB_ACT_END_OF_FILE; yyrestart( yyin , yyscanner); } else { ret_val = EOB_ACT_LAST_MATCH; YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_EOF_PENDING; } } else ret_val = EOB_ACT_CONTINUE_SCAN; if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) { /* Extend the array by 50%, plus the number we really need. */ int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1); YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc( (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner ); if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" ); /* "- 2" to take care of EOB's */ YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2); } yyg->yy_n_chars += number_to_move; YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR; YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR; yyg->yytext_ptr = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; return ret_val; } /* yy_get_previous_state - get the state just before the EOB char was reached */ static yy_state_type yy_get_previous_state (yyscan_t yyscanner) { yy_state_type yy_current_state; char *yy_cp; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yy_current_state = yyg->yy_start; for ( yy_cp = yyg->yytext_ptr + YY_MORE_ADJ; yy_cp < yyg->yy_c_buf_p; ++yy_cp ) { yy_current_state = yy_nxt[yy_current_state][(*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1)]; } return yy_current_state; } /* yy_try_NUL_trans - try to make a transition on the NUL character * * synopsis * next_state = yy_try_NUL_trans( current_state ); */ static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state , yyscan_t yyscanner) { int yy_is_jam; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* This var may be unused depending upon options. */ yy_current_state = yy_nxt[yy_current_state][1]; yy_is_jam = (yy_current_state <= 0); (void)yyg; return yy_is_jam ? 0 : yy_current_state; } #ifndef YY_NO_UNPUT #endif #ifndef YY_NO_INPUT #ifdef __cplusplus static int yyinput (yyscan_t yyscanner) #else static int input (yyscan_t yyscanner) #endif { int c; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; *yyg->yy_c_buf_p = yyg->yy_hold_char; if ( *yyg->yy_c_buf_p == YY_END_OF_BUFFER_CHAR ) { /* yy_c_buf_p now points to the character we want to return. * If this occurs *before* the EOB characters, then it's a * valid NUL; if not, then we've hit the end of the buffer. */ if ( yyg->yy_c_buf_p < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] ) /* This was really a NUL. */ *yyg->yy_c_buf_p = '\0'; else { /* need more input */ int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr); ++yyg->yy_c_buf_p; switch ( yy_get_next_buffer( yyscanner ) ) { case EOB_ACT_LAST_MATCH: /* This happens because yy_g_n_b() * sees that we've accumulated a * token and flags that we need to * try matching the token before * proceeding. But for input(), * there's no matching to consider. * So convert the EOB_ACT_LAST_MATCH * to EOB_ACT_END_OF_FILE. */ /* Reset buffer status. */ yyrestart( yyin , yyscanner); /*FALLTHROUGH*/ case EOB_ACT_END_OF_FILE: { if ( yywrap( yyscanner ) ) return 0; if ( ! yyg->yy_did_buffer_switch_on_eof ) YY_NEW_FILE; #ifdef __cplusplus return yyinput(yyscanner); #else return input(yyscanner); #endif } case EOB_ACT_CONTINUE_SCAN: yyg->yy_c_buf_p = yyg->yytext_ptr + offset; break; } } } c = *(unsigned char *) yyg->yy_c_buf_p; /* cast for 8-bit char's */ *yyg->yy_c_buf_p = '\0'; /* preserve yytext */ yyg->yy_hold_char = *++yyg->yy_c_buf_p; return c; } #endif /* ifndef YY_NO_INPUT */ /** Immediately switch to a different input stream. * @param input_file A readable stream. * @param yyscanner The scanner object. * @note This function does not reset the start condition to @c INITIAL . */ void yyrestart (FILE * input_file , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if ( ! YY_CURRENT_BUFFER ){ yyensure_buffer_stack (yyscanner); YY_CURRENT_BUFFER_LVALUE = yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); } yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner); yy_load_buffer_state( yyscanner ); } /** Switch to a different input buffer. * @param new_buffer The new input buffer. * @param yyscanner The scanner object. */ void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* TODO. We should be able to replace this entire function body * with * yypop_buffer_state(); * yypush_buffer_state(new_buffer); */ yyensure_buffer_stack (yyscanner); if ( YY_CURRENT_BUFFER == new_buffer ) return; if ( YY_CURRENT_BUFFER ) { /* Flush out information for old buffer. */ *yyg->yy_c_buf_p = yyg->yy_hold_char; YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p; YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars; } YY_CURRENT_BUFFER_LVALUE = new_buffer; yy_load_buffer_state( yyscanner ); /* We don't actually know whether we did this switch during * EOF (yywrap()) processing, but the only time this flag * is looked at is after yywrap() is called, so it's safe * to go ahead and always set it. */ yyg->yy_did_buffer_switch_on_eof = 1; } static void yy_load_buffer_state (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; yyg->yytext_ptr = yyg->yy_c_buf_p = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; yyg->yy_hold_char = *yyg->yy_c_buf_p; } /** Allocate and initialize an input buffer state. * @param file A readable stream. * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. * @param yyscanner The scanner object. * @return the allocated buffer state. */ YY_BUFFER_STATE yy_create_buffer (FILE * file, int size , yyscan_t yyscanner) { YY_BUFFER_STATE b; b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_buf_size = size; /* yy_ch_buf has to be 2 characters longer than the size given because * we need to put in 2 end-of-buffer characters. */ b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner ); if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_is_our_buffer = 1; yy_init_buffer( b, file , yyscanner); return b; } /** Destroy the buffer. * @param b a buffer created with yy_create_buffer() * @param yyscanner The scanner object. */ void yy_delete_buffer (YY_BUFFER_STATE b , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if ( ! b ) return; if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; if ( b->yy_is_our_buffer ) yyfree( (void *) b->yy_ch_buf , yyscanner ); yyfree( (void *) b , yyscanner ); } /* Initializes or reinitializes a buffer. * This function is sometimes called more than once on the same buffer, * such as during a yyrestart() or at EOF. */ static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file , yyscan_t yyscanner) { int oerrno = errno; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yy_flush_buffer( b , yyscanner); b->yy_input_file = file; b->yy_fill_buffer = 1; /* If b is the current buffer, then yy_init_buffer was _probably_ * called from yyrestart() or through yy_get_next_buffer. * In that case, we don't want to reset the lineno or column. */ if (b != YY_CURRENT_BUFFER){ b->yy_bs_lineno = 1; b->yy_bs_column = 0; } b->yy_is_interactive = 0; errno = oerrno; } /** Discard all buffered characters. On the next scan, YY_INPUT will be called. * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. * @param yyscanner The scanner object. */ void yy_flush_buffer (YY_BUFFER_STATE b , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if ( ! b ) return; b->yy_n_chars = 0; /* We always need two end-of-buffer characters. The first causes * a transition to the end-of-buffer state. The second causes * a jam in that state. */ b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; b->yy_buf_pos = &b->yy_ch_buf[0]; b->yy_at_bol = 1; b->yy_buffer_status = YY_BUFFER_NEW; if ( b == YY_CURRENT_BUFFER ) yy_load_buffer_state( yyscanner ); } /** Pushes the new state onto the stack. The new state becomes * the current state. This function will allocate the stack * if necessary. * @param new_buffer The new state. * @param yyscanner The scanner object. */ void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (new_buffer == NULL) return; yyensure_buffer_stack(yyscanner); /* This block is copied from yy_switch_to_buffer. */ if ( YY_CURRENT_BUFFER ) { /* Flush out information for old buffer. */ *yyg->yy_c_buf_p = yyg->yy_hold_char; YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p; YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars; } /* Only push if top exists. Otherwise, replace top. */ if (YY_CURRENT_BUFFER) yyg->yy_buffer_stack_top++; YY_CURRENT_BUFFER_LVALUE = new_buffer; /* copied from yy_switch_to_buffer. */ yy_load_buffer_state( yyscanner ); yyg->yy_did_buffer_switch_on_eof = 1; } /** Removes and deletes the top of the stack, if present. * The next element becomes the new top. * @param yyscanner The scanner object. */ void yypop_buffer_state (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (!YY_CURRENT_BUFFER) return; yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner); YY_CURRENT_BUFFER_LVALUE = NULL; if (yyg->yy_buffer_stack_top > 0) --yyg->yy_buffer_stack_top; if (YY_CURRENT_BUFFER) { yy_load_buffer_state( yyscanner ); yyg->yy_did_buffer_switch_on_eof = 1; } } /* Allocates the stack if it does not exist. * Guarantees space for at least one push. */ static void yyensure_buffer_stack (yyscan_t yyscanner) { yy_size_t num_to_alloc; struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (!yyg->yy_buffer_stack) { /* First allocation is just for 2 elements, since we don't know if this * scanner will even need a stack. We use 2 instead of 1 to avoid an * immediate realloc on the next call. */ num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */ yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc (num_to_alloc * sizeof(struct yy_buffer_state*) , yyscanner); if ( ! yyg->yy_buffer_stack ) YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*)); yyg->yy_buffer_stack_max = num_to_alloc; yyg->yy_buffer_stack_top = 0; return; } if (yyg->yy_buffer_stack_top >= (yyg->yy_buffer_stack_max) - 1){ /* Increase the buffer to prepare for a possible push. */ yy_size_t grow_size = 8 /* arbitrary grow size */; num_to_alloc = yyg->yy_buffer_stack_max + grow_size; yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc (yyg->yy_buffer_stack, num_to_alloc * sizeof(struct yy_buffer_state*) , yyscanner); if ( ! yyg->yy_buffer_stack ) YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); /* zero only the new slots.*/ memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*)); yyg->yy_buffer_stack_max = num_to_alloc; } } /** Setup the input buffer state to scan directly from a user-specified character buffer. * @param base the character buffer * @param size the size in bytes of the character buffer * @param yyscanner The scanner object. * @return the newly allocated buffer state object. */ YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size , yyscan_t yyscanner) { YY_BUFFER_STATE b; if ( size < 2 || base[size-2] != YY_END_OF_BUFFER_CHAR || base[size-1] != YY_END_OF_BUFFER_CHAR ) /* They forgot to leave room for the EOB's. */ return NULL; b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); b->yy_buf_size = (int) (size - 2); /* "- 2" to take care of EOB's */ b->yy_buf_pos = b->yy_ch_buf = base; b->yy_is_our_buffer = 0; b->yy_input_file = NULL; b->yy_n_chars = b->yy_buf_size; b->yy_is_interactive = 0; b->yy_at_bol = 1; b->yy_fill_buffer = 0; b->yy_buffer_status = YY_BUFFER_NEW; yy_switch_to_buffer( b , yyscanner ); return b; } /** Setup the input buffer state to scan a string. The next call to yylex() will * scan from a @e copy of @a str. * @param yystr a NUL-terminated string to scan * @param yyscanner The scanner object. * @return the newly allocated buffer state object. * @note If you want to scan bytes that may contain NUL values, then use * yy_scan_bytes() instead. */ YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner) { return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner); } /** Setup the input buffer state to scan the given bytes. The next call to yylex() will * scan from a @e copy of @a bytes. * @param yybytes the byte buffer to scan * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes. * @param yyscanner The scanner object. * @return the newly allocated buffer state object. */ YY_BUFFER_STATE yy_scan_bytes (const char * yybytes, int _yybytes_len , yyscan_t yyscanner) { YY_BUFFER_STATE b; char *buf; yy_size_t n; int i; /* Get memory for full buffer, including space for trailing EOB's. */ n = (yy_size_t) (_yybytes_len + 2); buf = (char *) yyalloc( n , yyscanner ); if ( ! buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); for ( i = 0; i < _yybytes_len; ++i ) buf[i] = yybytes[i]; buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR; b = yy_scan_buffer( buf, n , yyscanner); if ( ! b ) YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); /* It's okay to grow etc. this buffer, and we should throw it * away when we're done. */ b->yy_is_our_buffer = 1; return b; } #ifndef YY_EXIT_FAILURE #define YY_EXIT_FAILURE 2 #endif static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; fprintf( stderr, "%s\n", msg ); exit( YY_EXIT_FAILURE ); } /* Redefine yyless() so it works in section 3 code. */ #undef yyless #define yyless(n) \ do \ { \ /* Undo effects of setting up yytext. */ \ int yyless_macro_arg = (n); \ YY_LESS_LINENO(yyless_macro_arg);\ yytext[yyleng] = yyg->yy_hold_char; \ yyg->yy_c_buf_p = yytext + yyless_macro_arg; \ yyg->yy_hold_char = *yyg->yy_c_buf_p; \ *yyg->yy_c_buf_p = '\0'; \ yyleng = yyless_macro_arg; \ } \ while ( 0 ) /* Accessor methods (get/set functions) to struct members. */ /** Get the user-defined data for this scanner. * @param yyscanner The scanner object. */ YY_EXTRA_TYPE yyget_extra (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyextra; } /** Get the current line number. * @param yyscanner The scanner object. */ int yyget_lineno (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (! YY_CURRENT_BUFFER) return 0; return yylineno; } /** Get the current column number. * @param yyscanner The scanner object. */ int yyget_column (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; if (! YY_CURRENT_BUFFER) return 0; return yycolumn; } /** Get the input stream. * @param yyscanner The scanner object. */ FILE *yyget_in (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyin; } /** Get the output stream. * @param yyscanner The scanner object. */ FILE *yyget_out (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyout; } /** Get the length of the current token. * @param yyscanner The scanner object. */ int yyget_leng (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yyleng; } /** Get the current token. * @param yyscanner The scanner object. */ char *yyget_text (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yytext; } /** Set the user-defined data. This data is never touched by the scanner. * @param user_defined The data to be associated with this scanner. * @param yyscanner The scanner object. */ void yyset_extra (YY_EXTRA_TYPE user_defined , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyextra = user_defined ; } /** Set the current line number. * @param _line_number line number * @param yyscanner The scanner object. */ void yyset_lineno (int _line_number , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* lineno is only valid if an input buffer exists. */ if (! YY_CURRENT_BUFFER ) YY_FATAL_ERROR( "yyset_lineno called with no buffer" ); yylineno = _line_number; } /** Set the current column. * @param _column_no column number * @param yyscanner The scanner object. */ void yyset_column (int _column_no , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* column is only valid if an input buffer exists. */ if (! YY_CURRENT_BUFFER ) YY_FATAL_ERROR( "yyset_column called with no buffer" ); yycolumn = _column_no; } /** Set the input stream. This does not discard the current * input buffer. * @param _in_str A readable stream. * @param yyscanner The scanner object. * @see yy_switch_to_buffer */ void yyset_in (FILE * _in_str , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyin = _in_str ; } void yyset_out (FILE * _out_str , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yyout = _out_str ; } int yyget_debug (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yy_flex_debug; } void yyset_debug (int _bdebug , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yy_flex_debug = _bdebug ; } /* Accessor methods for yylval and yylloc */ YYSTYPE * yyget_lval (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; return yylval; } void yyset_lval (YYSTYPE * yylval_param , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; yylval = yylval_param; } /* User-visible API */ /* yylex_init is special because it creates the scanner itself, so it is * the ONLY reentrant function that doesn't take the scanner as the last argument. * That's why we explicitly handle the declaration, instead of using our macros. */ int yylex_init(yyscan_t* ptr_yy_globals) { if (ptr_yy_globals == NULL){ errno = EINVAL; return 1; } *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL ); if (*ptr_yy_globals == NULL){ errno = ENOMEM; return 1; } /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */ memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t)); return yy_init_globals ( *ptr_yy_globals ); } /* yylex_init_extra has the same functionality as yylex_init, but follows the * convention of taking the scanner as the last argument. Note however, that * this is a *pointer* to a scanner, as it will be allocated by this call (and * is the reason, too, why this function also must handle its own declaration). * The user defined value in the first argument will be available to yyalloc in * the yyextra field. */ int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals ) { struct yyguts_t dummy_yyguts; yyset_extra (yy_user_defined, &dummy_yyguts); if (ptr_yy_globals == NULL){ errno = EINVAL; return 1; } *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts ); if (*ptr_yy_globals == NULL){ errno = ENOMEM; return 1; } /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */ memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t)); yyset_extra (yy_user_defined, *ptr_yy_globals); return yy_init_globals ( *ptr_yy_globals ); } static int yy_init_globals (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* Initialization is the same as for the non-reentrant scanner. * This function is called from yylex_destroy(), so don't allocate here. */ yyg->yy_buffer_stack = NULL; yyg->yy_buffer_stack_top = 0; yyg->yy_buffer_stack_max = 0; yyg->yy_c_buf_p = NULL; yyg->yy_init = 0; yyg->yy_start = 0; yyg->yy_start_stack_ptr = 0; yyg->yy_start_stack_depth = 0; yyg->yy_start_stack = NULL; /* Defined in main.c */ #ifdef YY_STDINIT yyin = stdin; yyout = stdout; #else yyin = NULL; yyout = NULL; #endif /* For future reference: Set errno on error, since we are called by * yylex_init() */ return 0; } /* yylex_destroy is for both reentrant and non-reentrant scanners. */ int yylex_destroy (yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* Pop the buffer stack, destroying each element. */ while(YY_CURRENT_BUFFER){ yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner ); YY_CURRENT_BUFFER_LVALUE = NULL; yypop_buffer_state(yyscanner); } /* Destroy the stack itself. */ yyfree(yyg->yy_buffer_stack , yyscanner); yyg->yy_buffer_stack = NULL; /* Destroy the start condition stack. */ yyfree( yyg->yy_start_stack , yyscanner ); yyg->yy_start_stack = NULL; /* Reset the globals. This is important in a non-reentrant scanner so the next time * yylex() is called, initialization will occur. */ yy_init_globals( yyscanner); /* Destroy the main struct (reentrant only). */ yyfree ( yyscanner , yyscanner ); yyscanner = NULL; return 0; } /* * Internal utility routines. */ #ifndef yytext_ptr static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; int i; for ( i = 0; i < n; ++i ) s1[i] = s2[i]; } #endif #ifdef YY_NEED_STRLEN static int yy_flex_strlen (const char * s , yyscan_t yyscanner) { int n; for ( n = 0; s[n]; ++n ) ; return n; } #endif void *yyalloc (yy_size_t size , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; return malloc(size); } void *yyrealloc (void * ptr, yy_size_t size , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; /* The cast to (char *) in the following accommodates both * implementations that use char* generic pointers, and those * that use void* generic pointers. It works with the latter * because both ANSI C and C++ allow castless assignment from * any pointer type to void*, and deal with argument conversions * as though doing an assignment. */ return realloc(ptr, size); } void yyfree (void * ptr , yyscan_t yyscanner) { struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; (void)yyg; free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ } #define YYTABLES_NAME "yytables" #line 945 "psqlscan.l" /* LCOV_EXCL_STOP */ /* * Create a lexer working state struct. * * callbacks is a struct of function pointers that encapsulate some * behavior we need from the surrounding program. This struct must * remain valid for the lifespan of the PsqlScanState. */ PsqlScanState psql_scan_create(const PsqlScanCallbacks *callbacks) { PsqlScanState state; state = (PsqlScanStateData *) pg_malloc0(sizeof(PsqlScanStateData)); state->callbacks = callbacks; yylex_init(&state->scanner); yyset_extra(state, state->scanner); psql_scan_reset(state); return state; } /* * Destroy a lexer working state struct, releasing all resources. */ void psql_scan_destroy(PsqlScanState state) { psql_scan_finish(state); psql_scan_reset(state); yylex_destroy(state->scanner); free(state); } /* * Set the callback passthrough pointer for the lexer. * * This could have been integrated into psql_scan_create, but keeping it * separate allows the application to change the pointer later, which might * be useful. */ void psql_scan_set_passthrough(PsqlScanState state, void *passthrough) { state->cb_passthrough = passthrough; } /* * Set up to perform lexing of the given input line. * * The text at *line, extending for line_len bytes, will be scanned by * subsequent calls to the psql_scan routines. psql_scan_finish should * be called when scanning is complete. Note that the lexer retains * a pointer to the storage at *line --- this string must not be altered * or freed until after psql_scan_finish is called. * * encoding is the libpq identifier for the character encoding in use, * and std_strings says whether standard_conforming_strings is on. */ void psql_scan_setup(PsqlScanState state, const char *line, int line_len, int encoding, bool std_strings) { /* Mustn't be scanning already */ Assert(state->scanbufhandle == NULL); Assert(state->buffer_stack == NULL); /* Do we need to hack the character set encoding? */ state->encoding = encoding; state->safe_encoding = pg_valid_server_encoding_id(encoding); /* Save standard-strings flag as well */ state->std_strings = std_strings; /* Set up flex input buffer with appropriate translation and padding */ state->scanbufhandle = psqlscan_prepare_buffer(state, line, line_len, &state->scanbuf); state->scanline = line; /* Set lookaside data in case we have to map unsafe encoding */ state->curline = state->scanbuf; state->refline = state->scanline; } /* * Do lexical analysis of SQL command text. * * The text previously passed to psql_scan_setup is scanned, and appended * (possibly with transformation) to query_buf. * * The return value indicates the condition that stopped scanning: * * PSCAN_SEMICOLON: found a command-ending semicolon. (The semicolon is * transferred to query_buf.) The command accumulated in query_buf should * be executed, then clear query_buf and call again to scan the remainder * of the line. * * PSCAN_BACKSLASH: found a backslash that starts a special command. * Any previous data on the line has been transferred to query_buf. * The caller will typically next apply a separate flex lexer to scan * the special command. * * PSCAN_INCOMPLETE: the end of the line was reached, but we have an * incomplete SQL command. *prompt is set to the appropriate prompt type. * * PSCAN_EOL: the end of the line was reached, and there is no lexical * reason to consider the command incomplete. The caller may or may not * choose to send it. *prompt is set to the appropriate prompt type if * the caller chooses to collect more input. * * In the PSCAN_INCOMPLETE and PSCAN_EOL cases, psql_scan_finish() should * be called next, then the cycle may be repeated with a fresh input line. * * In all cases, *prompt is set to an appropriate prompt type code for the * next line-input operation. */ PsqlScanResult psql_scan(PsqlScanState state, PQExpBuffer query_buf, promptStatus_t *prompt) { PsqlScanResult result; int lexresult; /* Must be scanning already */ Assert(state->scanbufhandle != NULL); /* Set current output target */ state->output_buf = query_buf; /* Set input source */ if (state->buffer_stack != NULL) yy_switch_to_buffer(state->buffer_stack->buf, state->scanner); else yy_switch_to_buffer(state->scanbufhandle, state->scanner); /* And lex. */ lexresult = yylex(NULL, state->scanner); /* * Check termination state and return appropriate result info. */ switch (lexresult) { case LEXRES_EOL: /* end of input */ switch (state->start_state) { case INITIAL: case xqs: /* we treat this like INITIAL */ if (state->paren_depth > 0) { result = PSCAN_INCOMPLETE; *prompt = PROMPT_PAREN; } else if (state->begin_depth > 0) { result = PSCAN_INCOMPLETE; *prompt = PROMPT_CONTINUE; } else if (query_buf->len > 0) { result = PSCAN_EOL; *prompt = PROMPT_CONTINUE; } else { /* never bother to send an empty buffer */ result = PSCAN_INCOMPLETE; *prompt = PROMPT_READY; } break; case xb: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xc: result = PSCAN_INCOMPLETE; *prompt = PROMPT_COMMENT; break; case xd: result = PSCAN_INCOMPLETE; *prompt = PROMPT_DOUBLEQUOTE; break; case xh: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xe: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xq: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; case xdolq: result = PSCAN_INCOMPLETE; *prompt = PROMPT_DOLLARQUOTE; break; case xui: result = PSCAN_INCOMPLETE; *prompt = PROMPT_DOUBLEQUOTE; break; case xus: result = PSCAN_INCOMPLETE; *prompt = PROMPT_SINGLEQUOTE; break; default: /* can't get here */ fprintf(stderr, "invalid YY_START\n"); exit(1); } break; case LEXRES_SEMI: /* semicolon */ result = PSCAN_SEMICOLON; *prompt = PROMPT_READY; break; case LEXRES_BACKSLASH: /* backslash */ result = PSCAN_BACKSLASH; *prompt = PROMPT_READY; break; default: /* can't get here */ fprintf(stderr, "invalid yylex result\n"); exit(1); } return result; } /* * Clean up after scanning a string. This flushes any unread input and * releases resources (but not the PsqlScanState itself). Note however * that this does not reset the lexer scan state; that can be done by * psql_scan_reset(), which is an orthogonal operation. * * It is legal to call this when not scanning anything (makes it easier * to deal with error recovery). */ void psql_scan_finish(PsqlScanState state) { /* Drop any incomplete variable expansions. */ while (state->buffer_stack != NULL) psqlscan_pop_buffer_stack(state); /* Done with the outer scan buffer, too */ if (state->scanbufhandle) yy_delete_buffer(state->scanbufhandle, state->scanner); state->scanbufhandle = NULL; if (state->scanbuf) free(state->scanbuf); state->scanbuf = NULL; } /* * Reset lexer scanning state to start conditions. This is appropriate * for executing \r psql commands (or any other time that we discard the * prior contents of query_buf). It is not, however, necessary to do this * when we execute and clear the buffer after getting a PSCAN_SEMICOLON or * PSCAN_EOL scan result, because the scan state must be INITIAL when those * conditions are returned. * * Note that this is unrelated to flushing unread input; that task is * done by psql_scan_finish(). */ void psql_scan_reset(PsqlScanState state) { state->start_state = INITIAL; state->paren_depth = 0; state->xcdepth = 0; /* not really necessary */ if (state->dolqstart) free(state->dolqstart); state->dolqstart = NULL; state->identifier_count = 0; state->begin_depth = 0; } /* * Reselect this lexer (psqlscan.l) after using another one. * * Currently and for foreseeable uses, it's sufficient to reset to INITIAL * state, because we'd never switch to another lexer in a different state. * However, we don't want to reset e.g. paren_depth, so this can't be * the same as psql_scan_reset(). * * Note: psql setjmp error recovery just calls psql_scan_reset(), so that * must be a superset of this. * * Note: it seems likely that other lexers could just assign INITIAL for * themselves, since that probably has the value zero in every flex-generated * lexer. But let's not assume that. */ void psql_scan_reselect_sql_lexer(PsqlScanState state) { state->start_state = INITIAL; } /* * Return true if lexer is currently in an "inside quotes" state. * * This is pretty grotty but is needed to preserve the old behavior * that mainloop.c drops blank lines not inside quotes without even * echoing them. */ bool psql_scan_in_quote(PsqlScanState state) { return state->start_state != INITIAL && state->start_state != xqs; } /* * Push the given string onto the stack of stuff to scan. * * NOTE SIDE EFFECT: the new buffer is made the active flex input buffer. */ void psqlscan_push_new_buffer(PsqlScanState state, const char *newstr, const char *varname) { StackElem *stackelem; stackelem = (StackElem *) pg_malloc(sizeof(StackElem)); /* * In current usage, the passed varname points at the current flex input * buffer; we must copy it before calling psqlscan_prepare_buffer() * because that will change the buffer state. */ stackelem->varname = varname ? pg_strdup(varname) : NULL; stackelem->buf = psqlscan_prepare_buffer(state, newstr, strlen(newstr), &stackelem->bufstring); state->curline = stackelem->bufstring; if (state->safe_encoding) { stackelem->origstring = NULL; state->refline = stackelem->bufstring; } else { stackelem->origstring = pg_strdup(newstr); state->refline = stackelem->origstring; } stackelem->next = state->buffer_stack; state->buffer_stack = stackelem; } /* * Pop the topmost buffer stack item (there must be one!) * * NB: after this, the flex input state is unspecified; caller must * switch to an appropriate buffer to continue lexing. * See psqlscan_select_top_buffer(). */ void psqlscan_pop_buffer_stack(PsqlScanState state) { StackElem *stackelem = state->buffer_stack; state->buffer_stack = stackelem->next; yy_delete_buffer(stackelem->buf, state->scanner); free(stackelem->bufstring); if (stackelem->origstring) free(stackelem->origstring); if (stackelem->varname) free(stackelem->varname); free(stackelem); } /* * Select the topmost surviving buffer as the active input. */ void psqlscan_select_top_buffer(PsqlScanState state) { StackElem *stackelem = state->buffer_stack; if (stackelem != NULL) { yy_switch_to_buffer(stackelem->buf, state->scanner); state->curline = stackelem->bufstring; state->refline = stackelem->origstring ? stackelem->origstring : stackelem->bufstring; } else { yy_switch_to_buffer(state->scanbufhandle, state->scanner); state->curline = state->scanbuf; state->refline = state->scanline; } } /* * Check if specified variable name is the source for any string * currently being scanned */ bool psqlscan_var_is_current_source(PsqlScanState state, const char *varname) { StackElem *stackelem; for (stackelem = state->buffer_stack; stackelem != NULL; stackelem = stackelem->next) { if (stackelem->varname && strcmp(stackelem->varname, varname) == 0) return true; } return false; } /* * Set up a flex input buffer to scan the given data. We always make a * copy of the data. If working in an unsafe encoding, the copy has * multibyte sequences replaced by FFs to avoid fooling the lexer rules. * * NOTE SIDE EFFECT: the new buffer is made the active flex input buffer. */ YY_BUFFER_STATE psqlscan_prepare_buffer(PsqlScanState state, const char *txt, int len, char **txtcopy) { char *newtxt; /* Flex wants two \0 characters after the actual data */ newtxt = pg_malloc(len + 2); *txtcopy = newtxt; newtxt[len] = newtxt[len + 1] = YY_END_OF_BUFFER_CHAR; if (state->safe_encoding) memcpy(newtxt, txt, len); else { /* Gotta do it the hard way */ int i = 0; while (i < len) { int thislen = PQmblen(txt + i, state->encoding); /* first byte should always be okay... */ newtxt[i] = txt[i]; i++; while (--thislen > 0 && i < len) newtxt[i++] = (char) 0xFF; } } return yy_scan_buffer(newtxt, len + 2, state->scanner); } /* * psqlscan_emit() --- body for ECHO macro * * NB: this must be used for ALL and ONLY the text copied from the flex * input data. If you pass it something that is not part of the yytext * string, you are making a mistake. Internally generated text can be * appended directly to state->output_buf. */ void psqlscan_emit(PsqlScanState state, const char *txt, int len) { PQExpBuffer output_buf = state->output_buf; if (state->safe_encoding) appendBinaryPQExpBuffer(output_buf, txt, len); else { /* Gotta do it the hard way */ const char *reference = state->refline; int i; reference += (txt - state->curline); for (i = 0; i < len; i++) { char ch = txt[i]; if (ch == (char) 0xFF) ch = reference[i]; appendPQExpBufferChar(output_buf, ch); } } } /* * psqlscan_extract_substring --- fetch value of (part of) the current token * * This is like psqlscan_emit(), except that the data is returned as a * malloc'd string rather than being pushed directly to state->output_buf. */ char * psqlscan_extract_substring(PsqlScanState state, const char *txt, int len) { char *result = (char *) pg_malloc(len + 1); if (state->safe_encoding) memcpy(result, txt, len); else { /* Gotta do it the hard way */ const char *reference = state->refline; int i; reference += (txt - state->curline); for (i = 0; i < len; i++) { char ch = txt[i]; if (ch == (char) 0xFF) ch = reference[i]; result[i] = ch; } } result[len] = '\0'; return result; } /* * psqlscan_escape_variable --- process :'VARIABLE' or :"VARIABLE" * * If the variable name is found, escape its value using the appropriate * quoting method and emit the value to output_buf. (Since the result is * surely quoted, there is never any reason to rescan it.) If we don't * find the variable or escaping fails, emit the token as-is. */ void psqlscan_escape_variable(PsqlScanState state, const char *txt, int len, PsqlScanQuoteType quote) { char *varname; char *value; /* Variable lookup. */ varname = psqlscan_extract_substring(state, txt + 2, len - 3); if (state->callbacks->get_variable) value = state->callbacks->get_variable(varname, quote, state->cb_passthrough); else value = NULL; free(varname); if (value) { /* Emit the suitably-escaped value */ appendPQExpBufferStr(state->output_buf, value); free(value); } else { /* Emit original token as-is */ psqlscan_emit(state, txt, len); } } void psqlscan_test_variable(PsqlScanState state, const char *txt, int len) { char *varname; char *value; varname = psqlscan_extract_substring(state, txt + 3, len - 4); if (state->callbacks->get_variable) value = state->callbacks->get_variable(varname, PQUOTE_PLAIN, state->cb_passthrough); else value = NULL; free(varname); if (value != NULL) { psqlscan_emit(state, "TRUE", 4); free(value); } else { psqlscan_emit(state, "FALSE", 5); } }