parse.c

sqlite 嵌入式数据库的源码

    0,  /*     UPDATE => nothing */
    0,  /*     INSERT => nothing */
    0,  /*        SET => nothing */
    0,  /* DEFERRABLE => nothing */
    0,  /*    FOREIGN => nothing */
    0,  /*       DROP => nothing */
    0,  /*      UNION => nothing */
    0,  /*        ALL => nothing */
    0,  /*  INTERSECT => nothing */
    0,  /*     EXCEPT => nothing */
    0,  /*     SELECT => nothing */
    0,  /*   DISTINCT => nothing */
    0,  /*        DOT => nothing */
    0,  /*       FROM => nothing */
    0,  /*       JOIN => nothing */
    0,  /*      USING => nothing */
    0,  /*      ORDER => nothing */
    0,  /*         BY => nothing */
    0,  /*      GROUP => nothing */
    0,  /*     HAVING => nothing */
    0,  /*      LIMIT => nothing */
    0,  /*      WHERE => nothing */
    0,  /*       INTO => nothing */
    0,  /*     VALUES => nothing */
    0,  /*    INTEGER => nothing */
    0,  /*      FLOAT => nothing */
    0,  /*       BLOB => nothing */
    0,  /*   REGISTER => nothing */
    0,  /*   VARIABLE => nothing */
    0,  /*     EXISTS => nothing */
    0,  /*       CASE => nothing */
    0,  /*       WHEN => nothing */
    0,  /*       THEN => nothing */
    0,  /*       ELSE => nothing */
    0,  /*      INDEX => nothing */
    0,  /*         TO => nothing */
    0,  /*        ADD => nothing */
    0,  /*   COLUMNKW => nothing */
};
#endif /* YYFALLBACK */

/* The following structure represents a single element of the
** parser's stack.  Information stored includes:
**
**   +  The state number for the parser at this level of the stack.
**
**   +  The value of the token stored at this level of the stack.
**      (In other words, the "major" token.)
**
**   +  The semantic value stored at this level of the stack.  This is
**      the information used by the action routines in the grammar.
**      It is sometimes called the "minor" token.
*/
struct yyStackEntry {
  int stateno;       /* The state-number */
  int major;         /* The major token value.  This is the code
                     ** number for the token at this stack level */
  YYMINORTYPE minor; /* The user-supplied minor token value.  This
                     ** is the value of the token  */
};
typedef struct yyStackEntry yyStackEntry;

/* The state of the parser is completely contained in an instance of
** the following structure */
struct yyParser {
  int yyidx;                    /* Index of top element in stack */
  int yyerrcnt;                 /* Shifts left before out of the error */
  sqlite3ParserARG_SDECL                /* A place to hold %extra_argument */
  yyStackEntry yystack[YYSTACKDEPTH];  /* The parser's stack */
};
typedef struct yyParser yyParser;

#ifndef NDEBUG
#include <stdio.h>
static FILE *yyTraceFILE = 0;
static char *yyTracePrompt = 0;
#endif /* NDEBUG */

#ifndef NDEBUG
/* 
** Turn parser tracing on by giving a stream to which to write the trace
** and a prompt to preface each trace message.  Tracing is turned off
** by making either argument NULL 
**
** Inputs:
** <ul>
** <li> A FILE* to which trace output should be written.
**      If NULL, then tracing is turned off.
** <li> A prefix string written at the beginning of every
**      line of trace output.  If NULL, then tracing is
**      turned off.
** </ul>
**
** Outputs:
** None.
*/
void sqlite3ParserTrace(FILE *TraceFILE, char *zTracePrompt){
  yyTraceFILE = TraceFILE;
  yyTracePrompt = zTracePrompt;
  if( yyTraceFILE==0 ) yyTracePrompt = 0;
  else if( yyTracePrompt==0 ) yyTraceFILE = 0;
}
#endif /* NDEBUG */

#ifndef NDEBUG
/* For tracing shifts, the names of all terminals and nonterminals
** are required.  The following table supplies these names */
static const char *const yyTokenName[] = { 
  "$",             "END_OF_FILE",   "ILLEGAL",       "SPACE",       
  "UNCLOSED_STRING",  "COMMENT",       "FUNCTION",      "COLUMN",      
  "AGG_FUNCTION",  "CONST_FUNC",    "SEMI",          "EXPLAIN",     
  "BEGIN",         "TRANSACTION",   "DEFERRED",      "IMMEDIATE",   
  "EXCLUSIVE",     "COMMIT",        "END",           "ROLLBACK",    
  "CREATE",        "TABLE",         "TEMP",          "LP",          
  "RP",            "AS",            "COMMA",         "ID",          
  "ABORT",         "AFTER",         "ASC",           "ATTACH",      
  "BEFORE",        "CASCADE",       "CONFLICT",      "DATABASE",    
  "DESC",          "DETACH",        "EACH",          "FAIL",        
  "FOR",           "IGNORE",        "INITIALLY",     "INSTEAD",     
  "LIKE_KW",       "MATCH",         "KEY",           "OF",          
  "OFFSET",        "PRAGMA",        "RAISE",         "REPLACE",     
  "RESTRICT",      "ROW",           "STATEMENT",     "TRIGGER",     
  "VACUUM",        "VIEW",          "REINDEX",       "RENAME",      
  "CTIME_KW",      "ALTER",         "OR",            "AND",         
  "NOT",           "IS",            "BETWEEN",       "IN",          
  "ISNULL",        "NOTNULL",       "NE",            "EQ",          
  "GT",            "LE",            "LT",            "GE",          
  "ESCAPE",        "BITAND",        "BITOR",         "LSHIFT",      
  "RSHIFT",        "PLUS",          "MINUS",         "STAR",        
  "SLASH",         "REM",           "CONCAT",        "UMINUS",      
  "UPLUS",         "BITNOT",        "STRING",        "JOIN_KW",     
  "CONSTRAINT",    "DEFAULT",       "NULL",          "PRIMARY",     
  "UNIQUE",        "CHECK",         "REFERENCES",    "COLLATE",     
  "AUTOINCR",      "ON",            "DELETE",        "UPDATE",      
  "INSERT",        "SET",           "DEFERRABLE",    "FOREIGN",     
  "DROP",          "UNION",         "ALL",           "INTERSECT",   
  "EXCEPT",        "SELECT",        "DISTINCT",      "DOT",         
  "FROM",          "JOIN",          "USING",         "ORDER",       
  "BY",            "GROUP",         "HAVING",        "LIMIT",       
  "WHERE",         "INTO",          "VALUES",        "INTEGER",     
  "FLOAT",         "BLOB",          "REGISTER",      "VARIABLE",    
  "EXISTS",        "CASE",          "WHEN",          "THEN",        
  "ELSE",          "INDEX",         "TO",            "ADD",         
  "COLUMNKW",      "error",         "input",         "cmdlist",     
  "ecmd",          "cmdx",          "cmd",           "explain",     
  "transtype",     "trans_opt",     "nm",            "create_table",
  "create_table_args",  "temp",          "dbnm",          "columnlist",  
  "conslist_opt",  "select",        "column",        "columnid",    
  "type",          "carglist",      "id",            "ids",         
  "typename",      "signed",        "plus_num",      "minus_num",   
  "carg",          "ccons",         "term",          "onconf",      
  "sortorder",     "autoinc",       "expr",          "idxlist_opt", 
  "refargs",       "defer_subclause",  "refarg",        "refact",      
  "init_deferred_pred_opt",  "conslist",      "tcons",         "idxlist",     
  "defer_subclause_opt",  "orconf",        "resolvetype",   "raisetype",   
  "fullname",      "oneselect",     "multiselect_op",  "distinct",    
  "selcollist",    "from",          "where_opt",     "groupby_opt", 
  "having_opt",    "orderby_opt",   "limit_opt",     "sclp",        
  "as",            "seltablist",    "stl_prefix",    "joinop",      
  "on_opt",        "using_opt",     "seltablist_paren",  "joinop2",     
  "inscollist",    "sortlist",      "sortitem",      "collate",     
  "exprlist",      "setlist",       "insert_cmd",    "inscollist_opt",
  "itemlist",      "likeop",        "escape",        "between_op",  
  "in_op",         "case_operand",  "case_exprlist",  "case_else",   
  "expritem",      "uniqueflag",    "idxitem",       "plus_opt",    
  "number",        "trigger_decl",  "trigger_cmd_list",  "trigger_time",
  "trigger_event",  "foreach_clause",  "when_clause",   "trigger_cmd", 
  "database_kw_opt",  "key_opt",       "add_column_fullname",  "kwcolumn_opt",
};
#endif /* NDEBUG */

#ifndef NDEBUG
/* For tracing reduce actions, the names of all rules are required.
*/
static const char *const yyRuleName[] = {
 /*   0 */ "input ::= cmdlist",
 /*   1 */ "cmdlist ::= cmdlist ecmd",
 /*   2 */ "cmdlist ::= ecmd",
 /*   3 */ "cmdx ::= cmd",
 /*   4 */ "ecmd ::= SEMI",
 /*   5 */ "ecmd ::= explain cmdx SEMI",
 /*   6 */ "explain ::=",
 /*   7 */ "explain ::= EXPLAIN",
 /*   8 */ "cmd ::= BEGIN transtype trans_opt",
 /*   9 */ "trans_opt ::=",
 /*  10 */ "trans_opt ::= TRANSACTION",
 /*  11 */ "trans_opt ::= TRANSACTION nm",
 /*  12 */ "transtype ::=",
 /*  13 */ "transtype ::= DEFERRED",
 /*  14 */ "transtype ::= IMMEDIATE",
 /*  15 */ "transtype ::= EXCLUSIVE",
 /*  16 */ "cmd ::= COMMIT trans_opt",
 /*  17 */ "cmd ::= END trans_opt",
 /*  18 */ "cmd ::= ROLLBACK trans_opt",
 /*  19 */ "cmd ::= create_table create_table_args",
 /*  20 */ "create_table ::= CREATE temp TABLE nm dbnm",
 /*  21 */ "temp ::= TEMP",
 /*  22 */ "temp ::=",
 /*  23 */ "create_table_args ::= LP columnlist conslist_opt RP",
 /*  24 */ "create_table_args ::= AS select",
 /*  25 */ "columnlist ::= columnlist COMMA column",
 /*  26 */ "columnlist ::= column",
 /*  27 */ "column ::= columnid type carglist",
 /*  28 */ "columnid ::= nm",
 /*  29 */ "id ::= ID",
 /*  30 */ "ids ::= ID",
 /*  31 */ "ids ::= STRING",
 /*  32 */ "nm ::= ID",
 /*  33 */ "nm ::= STRING",
 /*  34 */ "nm ::= JOIN_KW",
 /*  35 */ "type ::=",
 /*  36 */ "type ::= typename",
 /*  37 */ "type ::= typename LP signed RP",
 /*  38 */ "type ::= typename LP signed COMMA signed RP",
 /*  39 */ "typename ::= ids",
 /*  40 */ "typename ::= typename ids",
 /*  41 */ "signed ::= plus_num",
 /*  42 */ "signed ::= minus_num",
 /*  43 */ "carglist ::= carglist carg",
 /*  44 */ "carglist ::=",
 /*  45 */ "carg ::= CONSTRAINT nm ccons",
 /*  46 */ "carg ::= ccons",
 /*  47 */ "carg ::= DEFAULT term",
 /*  48 */ "carg ::= DEFAULT PLUS term",
 /*  49 */ "carg ::= DEFAULT MINUS term",
 /*  50 */ "carg ::= DEFAULT id",
 /*  51 */ "ccons ::= NULL onconf",
 /*  52 */ "ccons ::= NOT NULL onconf",
 /*  53 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc",
 /*  54 */ "ccons ::= UNIQUE onconf",
 /*  55 */ "ccons ::= CHECK LP expr RP onconf",
 /*  56 */ "ccons ::= REFERENCES nm idxlist_opt refargs",
 /*  57 */ "ccons ::= defer_subclause",
 /*  58 */ "ccons ::= COLLATE id",
 /*  59 */ "autoinc ::=",
 /*  60 */ "autoinc ::= AUTOINCR",
 /*  61 */ "refargs ::=",
 /*  62 */ "refargs ::= refargs refarg",
 /*  63 */ "refarg ::= MATCH nm",
 /*  64 */ "refarg ::= ON DELETE refact",
 /*  65 */ "refarg ::= ON UPDATE refact",
 /*  66 */ "refarg ::= ON INSERT refact",
 /*  67 */ "refact ::= SET NULL",
 /*  68 */ "refact ::= SET DEFAULT",
 /*  69 */ "refact ::= CASCADE",
 /*  70 */ "refact ::= RESTRICT",
 /*  71 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt",
 /*  72 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt",
 /*  73 */ "init_deferred_pred_opt ::=",
 /*  74 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED",
 /*  75 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE",
 /*  76 */ "conslist_opt ::=",