--- /dev/null
+#line 2 "utils/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) 2023, PgPool Global Development Group
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * IDENTIFICATION
+ * src/fe_utils/psqlscan.l
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#line 38 "utils/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 <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/* end standard C headers. */
+
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. 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 <inttypes.h>
+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 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 86
+#define YY_END_OF_BUFFER 87
+/* 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[210] =
+ { 0,
+ 0, 0, 10, 10, 0, 0, 0, 0, 9, 9,
+ 0, 0, 18, 18, 0, 0, 0, 0, 0, 0,
+ 0, 0, 87, 85, 1, 1, 64, 35, 64, 85,
+ 63, 13, 50, 51, 63, 63, 63, 63, 67, 67,
+ 63, 52, 63, 63, 63, 84, 84, 84, 84, 84,
+ 84, 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, 74, 2, 74, 67, 78, 73,
+ 78, 72, 71, 78, 60, 59, 55, 42, 44, 62,
+
+ 46, 48, 45, 47, 84, 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, 65, 66, 66,
+ 30, 1, 1, 74, 82, 82, 82, 2, 75, 74,
+ 70, 73, 77, 76, 69, 72, 68, 71, 67, 60,
+ 59, 61, 36, 15, 3, 18, 18, 18, 18, 26,
+ 24, 24, 27, 33, 74, 82, 81, 81, 76, 83,
+ 83, 80, 80, 68, 79, 79, 74, 57, 56, 61,
+ 18, 18, 18, 18, 18, 26, 24, 24, 27, 58,
+
+ 18, 24, 24, 24, 23, 24, 24, 24, 0
+ } ;
+
+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, 21, 22,
+ 22, 22, 22, 22, 22, 23, 23, 24, 25, 26,
+ 27, 28, 29, 7, 30, 31, 30, 30, 32, 30,
+ 33, 33, 33, 33, 33, 33, 33, 34, 35, 33,
+ 33, 33, 33, 33, 36, 33, 33, 37, 33, 33,
+ 16, 38, 16, 9, 39, 7, 30, 31, 30, 30,
+
+ 32, 30, 33, 33, 33, 33, 33, 33, 33, 34,
+ 35, 33, 33, 33, 33, 33, 40, 33, 33, 41,
+ 33, 33, 42, 7, 43, 7, 1, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33
+ } ;
+
+static const YY_CHAR yy_meta[44] =
+ { 0,
+ 1, 1, 2, 2, 3, 4, 3, 5, 3, 3,
+ 6, 1, 1, 7, 3, 1, 3, 1, 7, 8,
+ 8, 9, 10, 11, 1, 3, 12, 3, 3, 13,
+ 13, 13, 14, 14, 14, 14, 14, 15, 16, 14,
+ 14, 11, 1
+ } ;
+
+static const flex_int16_t yy_base[260] =
+ { 0,
+ 0, 0, 372, 371, 39, 64, 359, 350, 344, 299,
+ 294, 286, 58, 82, 44, 69, 42, 49, 290, 287,
+ 277, 276, 261, 1004, 85, 92, 230, 1004, 0, 89,
+ 0, 1004, 1004, 1004, 1004, 238, 80, 240, 95, 102,
+ 134, 1004, 36, 222, 215, 0, 230, 228, 218, 215,
+ 212, 52, 0, 1004, 0, 0, 100, 201, 0, 204,
+ 0, 0, 198, 1004, 145, 148, 152, 184, 0, 0,
+ 182, 146, 0, 0, 183, 175, 102, 0, 0, 1004,
+ 150, 166, 185, 1004, 185, 0, 198, 0, 1004, 102,
+ 211, 157, 125, 215, 0, 0, 216, 1004, 1004, 131,
+
+ 0, 0, 0, 0, 0, 1004, 1004, 1004, 169, 1004,
+ 1004, 0, 0, 169, 1004, 0, 0, 1004, 0, 0,
+ 1004, 242, 245, 140, 249, 1004, 136, 261, 0, 1004,
+ 247, 0, 0, 0, 0, 1004, 138, 250, 1004, 254,
+ 136, 0, 285, 259, 1004, 286, 263, 0, 1004, 295,
+ 164, 100, 299, 303, 307, 310, 327, 103, 315, 132,
+ 113, 0, 1004, 1004, 0, 337, 367, 370, 373, 323,
+ 0, 0, 0, 100, 0, 358, 1004, 177, 371, 1004,
+ 375, 1004, 331, 0, 1004, 31, 41, 1004, 1004, 8,
+ 397, 400, 404, 409, 416, 1004, 0, 0, 1004, 1004,
+
+ 420, 0, 0, 0, 1004, 0, 0, 0, 1004, 437,
+ 453, 469, 485, 501, 517, 533, 549, 563, 571, 584,
+ 596, 612, 628, 644, 660, 676, 692, 708, 724, 736,
+ 745, 757, 773, 782, 796, 801, 810, 819, 833, 845,
+ 854, 860, 866, 875, 884, 893, 902, 911, 927, 936,
+ 942, 948, 954, 960, 966, 972, 978, 984, 990
+ } ;
+
+static const flex_int16_t yy_def[260] =
+ { 0,
+ 209, 1, 210, 210, 211, 211, 212, 212, 213, 213,
+ 214, 214, 215, 215, 216, 216, 217, 217, 212, 212,
+ 214, 214, 209, 209, 209, 209, 218, 209, 218, 219,
+ 218, 209, 209, 209, 209, 218, 209, 218, 209, 39,
+ 220, 209, 218, 218, 218, 221, 221, 221, 221, 221,
+ 221, 209, 222, 209, 223, 223, 209, 209, 224, 209,
+ 225, 226, 209, 209, 209, 209, 209, 209, 227, 227,
+ 209, 228, 229, 229, 230, 209, 209, 218, 218, 209,
+ 231, 232, 233, 209, 234, 235, 234, 40, 209, 209,
+ 209, 209, 236, 209, 237, 238, 220, 209, 209, 209,
+
+ 218, 218, 218, 218, 221, 209, 209, 209, 209, 209,
+ 209, 222, 223, 209, 209, 239, 224, 209, 225, 226,
+ 209, 209, 209, 209, 209, 209, 209, 240, 227, 209,
+ 209, 241, 242, 243, 229, 209, 244, 231, 209, 209,
+ 232, 233, 233, 234, 209, 209, 209, 235, 209, 144,
+ 245, 209, 209, 246, 247, 209, 209, 236, 40, 237,
+ 238, 248, 209, 209, 239, 249, 240, 240, 240, 209,
+ 250, 251, 252, 244, 150, 209, 209, 209, 246, 209,
+ 209, 209, 209, 157, 209, 236, 87, 209, 209, 248,
+ 249, 249, 209, 249, 240, 209, 253, 254, 209, 209,
+
+ 249, 255, 256, 257, 209, 258, 259, 256, 0, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209
+ } ;
+
+static const flex_int16_t yy_nxt[1048] =
+ { 0,
+ 24, 25, 26, 25, 27, 28, 29, 30, 31, 29,
+ 32, 33, 34, 31, 31, 35, 36, 37, 38, 39,
+ 40, 40, 40, 41, 42, 43, 44, 45, 29, 46,
+ 47, 48, 46, 49, 46, 50, 51, 52, 46, 50,
+ 51, 24, 24, 56, 74, 56, 70, 56, 56, 75,
+ 200, 74, 57, 56, 71, 56, 75, 58, 209, 65,
+ 66, 67, 101, 102, 56, 56, 56, 56, 56, 209,
+ 56, 70, 56, 56, 68, 111, 111, 57, 56, 71,
+ 56, 72, 58, 65, 66, 67, 77, 77, 77, 56,
+ 56, 56, 56, 77, 77, 77, 80, 84, 68, 85,
+
+ 85, 85, 85, 77, 77, 77, 72, 136, 81, 81,
+ 81, 81, 87, 114, 88, 88, 88, 88, 115, 151,
+ 151, 151, 151, 189, 89, 90, 91, 89, 89, 92,
+ 89, 93, 89, 94, 89, 93, 89, 188, 89, 95,
+ 152, 209, 89, 80, 96, 136, 122, 123, 123, 125,
+ 125, 125, 166, 125, 125, 125, 128, 98, 126, 162,
+ 99, 124, 126, 158, 127, 131, 131, 131, 127, 138,
+ 138, 138, 138, 80, 163, 100, 155, 155, 155, 164,
+ 118, 132, 114, 151, 151, 133, 134, 115, 140, 143,
+ 136, 143, 121, 143, 143, 156, 151, 151, 143, 143,
+
+ 128, 143, 178, 143, 144, 144, 144, 144, 121, 118,
+ 143, 143, 143, 143, 116, 149, 146, 150, 150, 150,
+ 150, 209, 110, 147, 109, 153, 209, 153, 108, 146,
+ 154, 154, 154, 154, 159, 159, 159, 159, 107, 209,
+ 106, 104, 209, 122, 123, 123, 125, 125, 125, 103,
+ 125, 125, 125, 86, 83, 126, 79, 209, 124, 126,
+ 209, 127, 168, 123, 123, 127, 170, 170, 170, 138,
+ 138, 138, 138, 138, 138, 138, 138, 169, 144, 144,
+ 144, 144, 144, 144, 144, 144, 63, 63, 140, 143,
+ 146, 143, 76, 143, 143, 76, 63, 147, 143, 143,
+
+ 153, 143, 153, 143, 63, 154, 154, 154, 154, 54,
+ 143, 143, 143, 143, 175, 175, 175, 175, 154, 154,
+ 154, 154, 179, 179, 179, 179, 155, 155, 155, 155,
+ 155, 155, 187, 176, 159, 159, 159, 159, 192, 193,
+ 193, 181, 196, 196, 196, 183, 157, 157, 157, 157,
+ 155, 155, 155, 194, 54, 60, 184, 184, 184, 185,
+ 185, 185, 185, 185, 60, 186, 185, 185, 168, 123,
+ 123, 168, 123, 123, 168, 123, 123, 175, 175, 175,
+ 175, 54, 54, 169, 209, 209, 169, 209, 209, 195,
+ 179, 179, 179, 179, 179, 179, 179, 179, 192, 193,
+
+ 193, 192, 193, 193, 209, 125, 125, 125, 209, 181,
+ 192, 193, 193, 194, 126, 209, 194, 168, 123, 123,
+ 127, 192, 193, 193, 209, 201, 209, 209, 209, 209,
+ 209, 209, 195, 209, 209, 209, 201, 53, 53, 53,
+ 53, 53, 53, 53, 53, 53, 53, 53, 53, 53,
+ 53, 53, 53, 55, 55, 55, 55, 55, 55, 55,
+ 55, 55, 55, 55, 55, 55, 55, 55, 55, 59,
+ 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
+ 59, 59, 59, 59, 59, 61, 61, 61, 61, 61,
+ 61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
+
+ 61, 62, 62, 62, 62, 62, 62, 62, 62, 62,
+ 62, 62, 62, 62, 62, 62, 62, 64, 64, 64,
+ 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+ 64, 64, 64, 69, 69, 69, 69, 69, 69, 69,
+ 69, 69, 69, 69, 69, 69, 69, 69, 69, 73,
+ 73, 73, 73, 73, 73, 73, 73, 73, 73, 73,
+ 73, 73, 73, 73, 73, 78, 209, 209, 209, 78,
+ 209, 209, 209, 209, 78, 82, 209, 209, 82, 82,
+ 82, 209, 209, 82, 82, 209, 82, 97, 209, 97,
+ 209, 97, 97, 97, 97, 97, 97, 97, 209, 97,
+
+ 105, 209, 209, 105, 105, 105, 209, 209, 105, 105,
+ 209, 105, 112, 112, 112, 112, 112, 209, 112, 112,
+ 112, 112, 112, 112, 112, 112, 112, 112, 113, 113,
+ 113, 113, 113, 113, 209, 113, 113, 113, 113, 113,
+ 113, 113, 113, 113, 117, 117, 117, 209, 117, 117,
+ 117, 117, 117, 117, 117, 117, 117, 117, 117, 117,
+ 119, 119, 119, 119, 119, 209, 119, 119, 119, 119,
+ 119, 119, 119, 119, 119, 119, 120, 120, 120, 120,
+ 120, 209, 120, 120, 120, 120, 120, 120, 120, 120,
+ 120, 120, 129, 129, 129, 129, 129, 209, 129, 129,
+
+ 129, 129, 129, 129, 129, 129, 209, 129, 130, 130,
+ 130, 130, 130, 130, 130, 130, 130, 130, 130, 130,
+ 130, 130, 130, 130, 135, 135, 135, 135, 209, 135,
+ 135, 135, 135, 135, 135, 135, 135, 135, 135, 135,
+ 137, 209, 209, 209, 209, 209, 209, 209, 137, 137,
+ 209, 137, 139, 139, 139, 209, 209, 139, 139, 209,
+ 139, 141, 209, 209, 141, 141, 141, 209, 209, 141,
+ 141, 209, 141, 142, 209, 142, 142, 142, 142, 142,
+ 142, 142, 142, 142, 142, 142, 142, 142, 142, 145,
+ 145, 145, 209, 209, 145, 145, 209, 145, 148, 209,
+
+ 209, 209, 148, 209, 209, 209, 209, 148, 157, 157,
+ 157, 209, 209, 157, 209, 209, 157, 160, 160, 160,
+ 209, 209, 160, 160, 209, 160, 161, 161, 161, 209,
+ 209, 161, 161, 209, 161, 165, 209, 209, 209, 165,
+ 209, 209, 209, 209, 165, 167, 167, 167, 167, 167,
+ 167, 167, 167, 167, 167, 167, 167, 167, 167, 167,
+ 167, 171, 171, 171, 209, 209, 171, 172, 172, 172,
+ 209, 209, 172, 173, 173, 173, 209, 209, 173, 174,
+ 209, 209, 174, 174, 174, 209, 209, 174, 174, 209,
+ 174, 177, 209, 209, 209, 209, 177, 177, 209, 177,
+
+ 180, 180, 180, 209, 209, 180, 180, 209, 180, 182,
+ 182, 209, 209, 209, 182, 182, 209, 182, 190, 190,
+ 190, 209, 209, 190, 190, 209, 190, 191, 191, 191,
+ 191, 191, 191, 191, 191, 191, 191, 191, 191, 191,
+ 191, 191, 191, 197, 197, 197, 209, 209, 197, 198,
+ 198, 198, 209, 209, 198, 199, 199, 199, 209, 209,
+ 199, 202, 202, 202, 209, 209, 202, 203, 203, 203,
+ 209, 209, 203, 204, 204, 204, 209, 209, 204, 205,
+ 205, 205, 209, 209, 205, 206, 206, 206, 209, 209,
+ 206, 207, 207, 207, 209, 209, 207, 208, 208, 208,
+
+ 209, 209, 208, 23, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209
+ } ;
+
+static const flex_int16_t yy_chk[1048] =
+ { 0,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 5, 17, 5, 15, 5, 5, 17,
+ 190, 18, 5, 5, 15, 5, 18, 5, 187, 13,
+ 13, 13, 43, 43, 5, 5, 5, 5, 6, 186,
+ 6, 16, 6, 6, 13, 52, 52, 6, 6, 16,
+ 6, 15, 6, 14, 14, 14, 25, 25, 25, 6,
+ 6, 6, 6, 26, 26, 26, 30, 37, 14, 37,
+
+ 37, 37, 37, 77, 77, 77, 16, 174, 30, 30,
+ 30, 30, 39, 57, 39, 39, 39, 39, 57, 152,
+ 152, 90, 90, 161, 39, 39, 39, 39, 39, 39,
+ 39, 39, 40, 39, 39, 39, 40, 160, 40, 41,
+ 90, 158, 40, 141, 41, 137, 65, 65, 65, 66,
+ 66, 66, 127, 67, 67, 67, 124, 41, 66, 100,
+ 41, 65, 67, 93, 66, 72, 72, 72, 67, 81,
+ 81, 81, 81, 82, 109, 41, 92, 92, 92, 109,
+ 76, 72, 114, 151, 151, 72, 72, 114, 81, 83,
+ 75, 83, 71, 83, 83, 92, 178, 178, 83, 83,
+
+ 68, 83, 151, 83, 85, 85, 85, 85, 63, 60,
+ 83, 83, 83, 83, 58, 87, 85, 87, 87, 87,
+ 87, 97, 51, 85, 50, 91, 97, 91, 49, 87,
+ 91, 91, 91, 91, 94, 94, 94, 94, 48, 97,
+ 47, 45, 97, 122, 122, 122, 123, 123, 123, 44,
+ 125, 125, 125, 38, 36, 123, 27, 97, 122, 125,
+ 23, 123, 128, 128, 128, 125, 131, 131, 131, 138,
+ 138, 138, 138, 140, 140, 140, 140, 128, 144, 144,
+ 144, 144, 147, 147, 147, 147, 22, 21, 138, 143,
+ 144, 143, 20, 143, 143, 19, 12, 144, 143, 143,
+
+ 146, 143, 146, 143, 11, 146, 146, 146, 146, 10,
+ 143, 143, 143, 143, 150, 150, 150, 150, 153, 153,
+ 153, 153, 154, 154, 154, 154, 155, 155, 155, 156,
+ 156, 156, 159, 150, 159, 159, 159, 159, 166, 166,
+ 166, 154, 170, 170, 170, 155, 157, 157, 157, 157,
+ 183, 183, 183, 166, 9, 8, 157, 157, 157, 157,
+ 157, 157, 157, 157, 7, 157, 157, 157, 167, 167,
+ 167, 168, 168, 168, 169, 169, 169, 176, 176, 176,
+ 176, 4, 3, 167, 0, 0, 168, 0, 0, 169,
+ 179, 179, 179, 179, 181, 181, 181, 181, 191, 191,
+
+ 191, 192, 192, 192, 0, 193, 193, 193, 0, 179,
+ 194, 194, 194, 191, 193, 0, 192, 195, 195, 195,
+ 193, 201, 201, 201, 0, 194, 0, 0, 0, 0,
+ 0, 0, 195, 0, 0, 0, 201, 210, 210, 210,
+ 210, 210, 210, 210, 210, 210, 210, 210, 210, 210,
+ 210, 210, 210, 211, 211, 211, 211, 211, 211, 211,
+ 211, 211, 211, 211, 211, 211, 211, 211, 211, 212,
+ 212, 212, 212, 212, 212, 212, 212, 212, 212, 212,
+ 212, 212, 212, 212, 212, 213, 213, 213, 213, 213,
+ 213, 213, 213, 213, 213, 213, 213, 213, 213, 213,
+
+ 213, 214, 214, 214, 214, 214, 214, 214, 214, 214,
+ 214, 214, 214, 214, 214, 214, 214, 215, 215, 215,
+ 215, 215, 215, 215, 215, 215, 215, 215, 215, 215,
+ 215, 215, 215, 216, 216, 216, 216, 216, 216, 216,
+ 216, 216, 216, 216, 216, 216, 216, 216, 216, 217,
+ 217, 217, 217, 217, 217, 217, 217, 217, 217, 217,
+ 217, 217, 217, 217, 217, 218, 0, 0, 0, 218,
+ 0, 0, 0, 0, 218, 219, 0, 0, 219, 219,
+ 219, 0, 0, 219, 219, 0, 219, 220, 0, 220,
+ 0, 220, 220, 220, 220, 220, 220, 220, 0, 220,
+
+ 221, 0, 0, 221, 221, 221, 0, 0, 221, 221,
+ 0, 221, 222, 222, 222, 222, 222, 0, 222, 222,
+ 222, 222, 222, 222, 222, 222, 222, 222, 223, 223,
+ 223, 223, 223, 223, 0, 223, 223, 223, 223, 223,
+ 223, 223, 223, 223, 224, 224, 224, 0, 224, 224,
+ 224, 224, 224, 224, 224, 224, 224, 224, 224, 224,
+ 225, 225, 225, 225, 225, 0, 225, 225, 225, 225,
+ 225, 225, 225, 225, 225, 225, 226, 226, 226, 226,
+ 226, 0, 226, 226, 226, 226, 226, 226, 226, 226,
+ 226, 226, 227, 227, 227, 227, 227, 0, 227, 227,
+
+ 227, 227, 227, 227, 227, 227, 0, 227, 228, 228,
+ 228, 228, 228, 228, 228, 228, 228, 228, 228, 228,
+ 228, 228, 228, 228, 229, 229, 229, 229, 0, 229,
+ 229, 229, 229, 229, 229, 229, 229, 229, 229, 229,
+ 230, 0, 0, 0, 0, 0, 0, 0, 230, 230,
+ 0, 230, 231, 231, 231, 0, 0, 231, 231, 0,
+ 231, 232, 0, 0, 232, 232, 232, 0, 0, 232,
+ 232, 0, 232, 233, 0, 233, 233, 233, 233, 233,
+ 233, 233, 233, 233, 233, 233, 233, 233, 233, 234,
+ 234, 234, 0, 0, 234, 234, 0, 234, 235, 0,
+
+ 0, 0, 235, 0, 0, 0, 0, 235, 236, 236,
+ 236, 0, 0, 236, 0, 0, 236, 237, 237, 237,
+ 0, 0, 237, 237, 0, 237, 238, 238, 238, 0,
+ 0, 238, 238, 0, 238, 239, 0, 0, 0, 239,
+ 0, 0, 0, 0, 239, 240, 240, 240, 240, 240,
+ 240, 240, 240, 240, 240, 240, 240, 240, 240, 240,
+ 240, 241, 241, 241, 0, 0, 241, 242, 242, 242,
+ 0, 0, 242, 243, 243, 243, 0, 0, 243, 244,
+ 0, 0, 244, 244, 244, 0, 0, 244, 244, 0,
+ 244, 245, 0, 0, 0, 0, 245, 245, 0, 245,
+
+ 246, 246, 246, 0, 0, 246, 246, 0, 246, 247,
+ 247, 0, 0, 0, 247, 247, 0, 247, 248, 248,
+ 248, 0, 0, 248, 248, 0, 248, 249, 249, 249,
+ 249, 249, 249, 249, 249, 249, 249, 249, 249, 249,
+ 249, 249, 249, 250, 250, 250, 0, 0, 250, 251,
+ 251, 251, 0, 0, 251, 252, 252, 252, 0, 0,
+ 252, 253, 253, 253, 0, 0, 253, 254, 254, 254,
+ 0, 0, 254, 255, 255, 255, 0, 0, 255, 256,
+ 256, 256, 0, 0, 256, 257, 257, 257, 0, 0,
+ 257, 258, 258, 258, 0, 0, 258, 259, 259, 259,
+
+ 0, 0, 259, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209, 209, 209, 209,
+ 209, 209, 209, 209, 209, 209, 209
+ } ;
+
+/* 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 "utils/psqlscan.l"
+
+#line 39 "utils/psqlscan.l"
+
+/* LCOV_EXCL_START */
+
+#include "parser/pg_config_manual.h"
+#include "pool.h"
+#include "utils/psqlscan.h"
+#include "utils/psqlscan_int.h"
+#include "utils/pqexpbuffer.h"
+#include "utils/pgstrcasecmp.h"
+#include "utils/elog.h"
+#include "parser/pool_parser.h"
+
+#define pg_log_warning(str, var) elog(WARNING, (str), (var))
+#define pg_malloc palloc
+#define pg_malloc0 palloc0
+
+static char *pg_strdup(const char *in);
+
+/*
+ * 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 1036 "utils/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 <<EOF>> 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:
+ * <xb> bit string literal
+ * <xc> extended C-style comments
+ * <xd> delimited identifiers (double-quoted identifiers)
+ * <xh> hexadecimal byte string
+ * <xq> standard quoted strings
+ * <xqs> quote stop (detect continued strings)
+ * <xe> extended quoted strings (support backslash escape sequences)
+ * <xdolq> $foo$ quoted strings
+ * <xui> quoted identifier with Unicode escapes
+ * <xus> quoted string with Unicode escapes
+ *
+ * Note: we intentionally don't mimic the backend's <xeu> state; we have
+ * no need to distinguish it from <xe> 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 byte string */
+/* 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"!
+ */
+/*
+ * Numbers
+ *
+ * Unary minus is not part of a number here. Instead we pass it separately to
+ * the parser, and there it gets coerced via doNegate().
+ *
+ * {numericfail} is used because we would like "1..10" to lex as 1, dot_dot, 10.
+ *
+ * {realfail} is 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 1196 "utils/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 <unistd.h>
+#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 387 "utils/psqlscan.l"
+
+
+
+#line 391 "utils/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 1497 "utils/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:
+ do
+ {
+ YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
+ if ( yy_accept[yy_current_state] )
+ {
+ yyg->yy_last_accepting_state = yy_current_state;
+ yyg->yy_last_accepting_cpos = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 210 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ ++yy_cp;
+ }
+ while ( yy_current_state != 209 );
+ yy_cp = yyg->yy_last_accepting_cpos;
+ yy_current_state = yyg->yy_last_accepting_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 0: /* must back up */
+ /* undo the effects of YY_DO_BEFORE_ACTION */
+ *yy_cp = yyg->yy_hold_char;
+ yy_cp = yyg->yy_last_accepting_cpos;
+ yy_current_state = yyg->yy_last_accepting_state;
+ goto yy_find_action;
+
+case 1:
+/* rule 1 can match eol */
+YY_RULE_SETUP
+#line 405 "utils/psqlscan.l"
+{
+ /*
+ * Note that the whitespace rule includes both true
+ * whitespace and single-line ("--" style) comments.
+ * We suppress whitespace until we have collected some
+ * non-whitespace data. (This interacts with some
+ * decisions in MainLoop(); see there for details.)
+ */
+ if (output_buf->len > 0)
+ ECHO;
+ }
+ YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 417 "utils/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 426 "utils/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 433 "utils/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 441 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 445 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 449 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+/* <xc> */
+case 8:
+YY_RULE_SETUP
+#line 454 "utils/psqlscan.l"
+{
+ BEGIN(xb);
+ ECHO;
+ }
+ YY_BREAK
+case 9:
+/* rule 9 can match eol */
+#line 459 "utils/psqlscan.l"
+case 10:
+/* rule 10 can match eol */
+YY_RULE_SETUP
+#line 459 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 463 "utils/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 474 "utils/psqlscan.l"
+{
+ yyless(1); /* eat only 'n' this time */
+ ECHO;
+ }
+ YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 479 "utils/psqlscan.l"
+{
+ if (cur_state->std_strings)
+ BEGIN(xq);
+ else
+ BEGIN(xe);
+ ECHO;
+ }
+ YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 486 "utils/psqlscan.l"
+{
+ BEGIN(xe);
+ ECHO;
+ }
+ YY_BREAK
+case 15:
+YY_RULE_SETUP
+#line 490 "utils/psqlscan.l"
+{
+ BEGIN(xus);
+ ECHO;
+ }
+ YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 495 "utils/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 508 "utils/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 518 "utils/psqlscan.l"
+case 19:
+/* rule 19 can match eol */
+YY_RULE_SETUP
+#line 518 "utils/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 529 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 21:
+/* rule 21 can match eol */
+YY_RULE_SETUP
+#line 532 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 22:
+/* rule 22 can match eol */
+YY_RULE_SETUP
+#line 535 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 23:
+YY_RULE_SETUP
+#line 538 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 24:
+YY_RULE_SETUP
+#line 541 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 25:
+/* rule 25 can match eol */
+YY_RULE_SETUP
+#line 544 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 26:
+YY_RULE_SETUP
+#line 547 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 27:
+YY_RULE_SETUP
+#line 550 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 28:
+YY_RULE_SETUP
+#line 553 "utils/psqlscan.l"
+{
+ /* This is only needed for \ just before EOF */
+ ECHO;
+ }
+ YY_BREAK
+case 29:
+YY_RULE_SETUP
+#line 558 "utils/psqlscan.l"
+{
+ cur_state->dolqstart = pg_strdup(yytext);
+ BEGIN(xdolq);
+ ECHO;
+ }
+ YY_BREAK
+case 30:
+YY_RULE_SETUP
+#line 563 "utils/psqlscan.l"
+{
+ /* throw back all but the initial "$" */
+ yyless(1);
+ ECHO;
+ }
+ YY_BREAK
+case 31:
+YY_RULE_SETUP
+#line 568 "utils/psqlscan.l"
+{
+ if (strcmp(yytext, cur_state->dolqstart) == 0)
+ {
+ pfree(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 586 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 33:
+YY_RULE_SETUP
+#line 589 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 34:
+YY_RULE_SETUP
+#line 592 "utils/psqlscan.l"
+{
+ /* This is only needed for $ inside the quoted text */
+ ECHO;
+ }
+ YY_BREAK
+case 35:
+YY_RULE_SETUP
+#line 597 "utils/psqlscan.l"
+{
+ BEGIN(xd);
+ ECHO;
+ }
+ YY_BREAK
+case 36:
+YY_RULE_SETUP
+#line 601 "utils/psqlscan.l"
+{
+ BEGIN(xui);
+ ECHO;
+ }
+ YY_BREAK
+case 37:
+YY_RULE_SETUP
+#line 605 "utils/psqlscan.l"
+{
+ BEGIN(INITIAL);
+ ECHO;
+ }
+ YY_BREAK
+case 38:
+YY_RULE_SETUP
+#line 609 "utils/psqlscan.l"
+{
+ BEGIN(INITIAL);
+ ECHO;
+ }
+ YY_BREAK
+case 39:
+YY_RULE_SETUP
+#line 613 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 40:
+/* rule 40 can match eol */
+YY_RULE_SETUP
+#line 616 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 41:
+YY_RULE_SETUP
+#line 620 "utils/psqlscan.l"
+{
+ /* throw back all but the initial u/U */
+ yyless(1);
+ ECHO;
+ }
+ YY_BREAK
+case 42:
+YY_RULE_SETUP
+#line 626 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 43:
+YY_RULE_SETUP
+#line 630 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 44:
+YY_RULE_SETUP
+#line 634 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 45:
+YY_RULE_SETUP
+#line 638 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 46:
+YY_RULE_SETUP
+#line 642 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 47:
+YY_RULE_SETUP
+#line 646 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 48:
+YY_RULE_SETUP
+#line 650 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 49:
+YY_RULE_SETUP
+#line 654 "utils/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 664 "utils/psqlscan.l"
+{
+ cur_state->paren_depth++;
+ ECHO;
+ }
+ YY_BREAK
+case 51:
+YY_RULE_SETUP
+#line 669 "utils/psqlscan.l"
+{
+ if (cur_state->paren_depth > 0)
+ cur_state->paren_depth--;
+ ECHO;
+ }
+ YY_BREAK
+case 52:
+YY_RULE_SETUP
+#line 675 "utils/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 691 "utils/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 698 "utils/psqlscan.l"
+{
+ /* Terminate lexing temporarily */
+ cur_state->start_state = YY_START;
+ return LEXRES_BACKSLASH;
+ }
+ YY_BREAK
+case 55:
+YY_RULE_SETUP
+#line 704 "utils/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 */
+ }
+ pfree(value);
+ }
+ else
+ {
+ /*
+ * if the variable doesn't exist we'll copy the string
+ * as is
+ */
+ ECHO;
+ }
+
+ pfree(varname);
+ }
+ YY_BREAK
+case 56:
+YY_RULE_SETUP
+#line 750 "utils/psqlscan.l"
+{
+ psqlscan_escape_variable(cur_state, yytext, yyleng,
+ PQUOTE_SQL_LITERAL);
+ }
+ YY_BREAK
+case 57:
+YY_RULE_SETUP
+#line 755 "utils/psqlscan.l"
+{
+ psqlscan_escape_variable(cur_state, yytext, yyleng,
+ PQUOTE_SQL_IDENT);
+ }
+ YY_BREAK
+case 58:
+YY_RULE_SETUP
+#line 760 "utils/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 769 "utils/psqlscan.l"
+{
+ /* Throw back everything but the colon */
+ yyless(1);
+ ECHO;
+ }
+ YY_BREAK
+case 60:
+YY_RULE_SETUP
+#line 775 "utils/psqlscan.l"
+{
+ /* Throw back everything but the colon */
+ yyless(1);
+ ECHO;
+ }
+ YY_BREAK
+case 61:
+YY_RULE_SETUP
+#line 781 "utils/psqlscan.l"
+{
+ /* Throw back everything but the colon */
+ yyless(1);
+ ECHO;
+ }
+ YY_BREAK
+case 62:
+YY_RULE_SETUP
+#line 786 "utils/psqlscan.l"
+{
+ /* Throw back everything but the colon */
+ yyless(1);
+ ECHO;
+ }
+ YY_BREAK
+/*
+ * Back to backend-compatible rules.
+ */
+case 63:
+YY_RULE_SETUP
+#line 796 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 64:
+YY_RULE_SETUP
+#line 800 "utils/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 867 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 66:
+YY_RULE_SETUP
+#line 870 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 67:
+YY_RULE_SETUP
+#line 874 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 68:
+YY_RULE_SETUP
+#line 877 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 69:
+YY_RULE_SETUP
+#line 880 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 70:
+YY_RULE_SETUP
+#line 883 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 71:
+YY_RULE_SETUP
+#line 886 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 72:
+YY_RULE_SETUP
+#line 889 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 73:
+YY_RULE_SETUP
+#line 892 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 74:
+YY_RULE_SETUP
+#line 895 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 75:
+YY_RULE_SETUP
+#line 898 "utils/psqlscan.l"
+{
+ /* throw back the .., and treat as integer */
+ yyless(yyleng - 2);
+ ECHO;
+ }
+ YY_BREAK
+case 76:
+YY_RULE_SETUP
+#line 903 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 77:
+YY_RULE_SETUP
+#line 906 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 78:
+YY_RULE_SETUP
+#line 909 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 79:
+YY_RULE_SETUP
+#line 912 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 80:
+YY_RULE_SETUP
+#line 915 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 81:
+YY_RULE_SETUP
+#line 918 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 82:
+YY_RULE_SETUP
+#line 921 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 83:
+YY_RULE_SETUP
+#line 924 "utils/psqlscan.l"
+{
+ ECHO;
+ }
+ YY_BREAK
+case 84:
+YY_RULE_SETUP
+#line 929 "utils/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 85:
+YY_RULE_SETUP
+#line 982 "utils/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 986 "utils/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 86:
+YY_RULE_SETUP
+#line 1001 "utils/psqlscan.l"
+YY_FATAL_ERROR( "flex scanner jammed" );
+ YY_BREAK
+#line 2462 "utils/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_last_accepting_cpos;
+ yy_current_state = yyg->yy_last_accepting_state;
+ 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_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+ if ( yy_accept[yy_current_state] )
+ {
+ yyg->yy_last_accepting_state = yy_current_state;
+ yyg->yy_last_accepting_cpos = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 210 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ }
+
+ 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. */
+ char *yy_cp = yyg->yy_c_buf_p;
+
+ YY_CHAR yy_c = 1;
+ if ( yy_accept[yy_current_state] )
+ {
+ yyg->yy_last_accepting_state = yy_current_state;
+ yyg->yy_last_accepting_cpos = yy_cp;
+ }
+ while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+ {
+ yy_current_state = (int) yy_def[yy_current_state];
+ if ( yy_current_state >= 210 )
+ yy_c = yy_meta[yy_c];
+ }
+ yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+ yy_is_jam = (yy_current_state == 209);
+
+ (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 1001 "utils/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);
+
+ pfree(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)
+ pfree(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)
+ pfree(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);
+ pfree(stackelem->bufstring);
+ if (stackelem->origstring)
+ pfree(stackelem->origstring);
+ if (stackelem->varname)
+ pfree(stackelem->varname);
+ pfree(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;
+ pfree(varname);
+
+ if (value)
+ {
+ /* Emit the suitably-escaped value */
+ appendPQExpBufferStr(state->output_buf, value);
+ pfree(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;
+ pfree(varname);
+
+ if (value != NULL)
+ {
+ psqlscan_emit(state, "TRUE", 4);
+ pfree(value);
+ }
+ else
+ {
+ psqlscan_emit(state, "FALSE", 5);
+ }
+}
+
+/*
+ * "Safe" wrapper around strdup() using palloc().
+ * For pgpool backend.
+ */
+static char *
+pg_strdup(const char *in)
+{
+ char *tmp;
+
+ if (!in)
+ {
+ ereport(ERROR,
+ (errmsg("cannot duplicate null pointer (internal error)")));
+ }
+ tmp = pstrdup(in);
+ if (!tmp)
+ {
+ ereport(ERROR,
+ (errmsg("out of memory")));
+ }
+ return tmp;
+}
+
+#undef pg_log_warning
+#undef pg_malloc
+#undef pg_malloc0
+
projects / pgpool2.git / commitdiff