parse.c

PHP v6.0 For Linux 运行环境：Win9X/ WinME/ WinNT/ Win2K/ WinXP

#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 sqliteParserTrace(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",  "SEMI",          "EXPLAIN",       "BEGIN",       
  "TRANSACTION",   "COMMIT",        "END",           "ROLLBACK",    
  "CREATE",        "TABLE",         "TEMP",          "LP",          
  "RP",            "AS",            "COMMA",         "ID",          
  "ABORT",         "AFTER",         "ASC",           "ATTACH",      
  "BEFORE",        "CASCADE",       "CLUSTER",       "CONFLICT",    
  "COPY",          "DATABASE",      "DEFERRED",      "DELIMITERS",  
  "DESC",          "DETACH",        "EACH",          "FAIL",        
  "FOR",           "GLOB",          "IGNORE",        "IMMEDIATE",   
  "INITIALLY",     "INSTEAD",       "LIKE",          "MATCH",       
  "KEY",           "OF",            "OFFSET",        "PRAGMA",      
  "RAISE",         "REPLACE",       "RESTRICT",      "ROW",         
  "STATEMENT",     "TRIGGER",       "VACUUM",        "VIEW",        
  "OR",            "AND",           "NOT",           "EQ",          
  "NE",            "ISNULL",        "NOTNULL",       "IS",          
  "BETWEEN",       "IN",            "GT",            "GE",          
  "LT",            "LE",            "BITAND",        "BITOR",       
  "LSHIFT",        "RSHIFT",        "PLUS",          "MINUS",       
  "STAR",          "SLASH",         "REM",           "CONCAT",      
  "UMINUS",        "UPLUS",         "BITNOT",        "STRING",      
  "JOIN_KW",       "INTEGER",       "CONSTRAINT",    "DEFAULT",     
  "FLOAT",         "NULL",          "PRIMARY",       "UNIQUE",      
  "CHECK",         "REFERENCES",    "COLLATE",       "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",        "VARIABLE",      "CASE",          "WHEN",        
  "THEN",          "ELSE",          "INDEX",         "error",       
  "input",         "cmdlist",       "ecmd",          "explain",     
  "cmdx",          "cmd",           "trans_opt",     "onconf",      
  "nm",            "create_table",  "create_table_args",  "temp",        
  "columnlist",    "conslist_opt",  "select",        "column",      
  "columnid",      "type",          "carglist",      "id",          
  "ids",           "typename",      "signed",        "carg",        
  "ccons",         "sortorder",     "expr",          "idxlist_opt", 
  "refargs",       "defer_subclause",  "refarg",        "refact",      
  "init_deferred_pred_opt",  "conslist",      "tcons",         "idxlist",     
  "defer_subclause_opt",  "orconf",        "resolvetype",   "oneselect",   
  "multiselect_op",  "distinct",      "selcollist",    "from",        
  "where_opt",     "groupby_opt",   "having_opt",    "orderby_opt", 
  "limit_opt",     "sclp",          "as",            "seltablist",  
  "stl_prefix",    "joinop",        "dbnm",          "on_opt",      
  "using_opt",     "seltablist_paren",  "joinop2",       "sortlist",    
  "sortitem",      "collate",       "exprlist",      "setlist",     
  "insert_cmd",    "inscollist_opt",  "itemlist",      "inscollist",  
  "likeop",        "case_operand",  "case_exprlist",  "case_else",   
  "expritem",      "uniqueflag",    "idxitem",       "plus_num",    
  "minus_num",     "plus_opt",      "number",        "trigger_decl",
  "trigger_cmd_list",  "trigger_time",  "trigger_event",  "foreach_clause",
  "when_clause",   "trigger_cmd",   "database_kw_opt",  "key_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 */ "ecmd ::= explain cmdx SEMI",
 /*   4 */ "ecmd ::= SEMI",
 /*   5 */ "cmdx ::= cmd",
 /*   6 */ "explain ::= EXPLAIN",
 /*   7 */ "explain ::=",
 /*   8 */ "cmd ::= BEGIN trans_opt onconf",
 /*   9 */ "trans_opt ::=",
 /*  10 */ "trans_opt ::= TRANSACTION",
 /*  11 */ "trans_opt ::= TRANSACTION nm",
 /*  12 */ "cmd ::= COMMIT trans_opt",
 /*  13 */ "cmd ::= END trans_opt",
 /*  14 */ "cmd ::= ROLLBACK trans_opt",
 /*  15 */ "cmd ::= create_table create_table_args",
 /*  16 */ "create_table ::= CREATE temp TABLE nm",
 /*  17 */ "temp ::= TEMP",
 /*  18 */ "temp ::=",
 /*  19 */ "create_table_args ::= LP columnlist conslist_opt RP",
 /*  20 */ "create_table_args ::= AS select",
 /*  21 */ "columnlist ::= columnlist COMMA column",
 /*  22 */ "columnlist ::= column",
 /*  23 */ "column ::= columnid type carglist",
 /*  24 */ "columnid ::= nm",
 /*  25 */ "id ::= ID",
 /*  26 */ "ids ::= ID",
 /*  27 */ "ids ::= STRING",
 /*  28 */ "nm ::= ID",
 /*  29 */ "nm ::= STRING",
 /*  30 */ "nm ::= JOIN_KW",
 /*  31 */ "type ::=",
 /*  32 */ "type ::= typename",
 /*  33 */ "type ::= typename LP signed RP",
 /*  34 */ "type ::= typename LP signed COMMA signed RP",
 /*  35 */ "typename ::= ids",
 /*  36 */ "typename ::= typename ids",
 /*  37 */ "signed ::= INTEGER",
 /*  38 */ "signed ::= PLUS INTEGER",
 /*  39 */ "signed ::= MINUS INTEGER",
 /*  40 */ "carglist ::= carglist carg",
 /*  41 */ "carglist ::=",
 /*  42 */ "carg ::= CONSTRAINT nm ccons",
 /*  43 */ "carg ::= ccons",
 /*  44 */ "carg ::= DEFAULT STRING",
 /*  45 */ "carg ::= DEFAULT ID",
 /*  46 */ "carg ::= DEFAULT INTEGER",
 /*  47 */ "carg ::= DEFAULT PLUS INTEGER",
 /*  48 */ "carg ::= DEFAULT MINUS INTEGER",
 /*  49 */ "carg ::= DEFAULT FLOAT",
 /*  50 */ "carg ::= DEFAULT PLUS FLOAT",
 /*  51 */ "carg ::= DEFAULT MINUS FLOAT",
 /*  52 */ "carg ::= DEFAULT NULL",
 /*  53 */ "ccons ::= NULL onconf",
 /*  54 */ "ccons ::= NOT NULL onconf",
 /*  55 */ "ccons ::= PRIMARY KEY sortorder onconf",
 /*  56 */ "ccons ::= UNIQUE onconf",
 /*  57 */ "ccons ::= CHECK LP expr RP onconf",
 /*  58 */ "ccons ::= REFERENCES nm idxlist_opt refargs",
 /*  59 */ "ccons ::= defer_subclause",
 /*  60 */ "ccons ::= COLLATE id",
 /*  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 ::=",
 /*  77 */ "conslist_opt ::= COMMA conslist",
 /*  78 */ "conslist ::= conslist COMMA tcons",
 /*  79 */ "conslist ::= conslist tcons",
 /*  80 */ "conslist ::= tcons",
 /*  81 */ "tcons ::= CONSTRAINT nm",
 /*  82 */ "tcons ::= PRIMARY KEY LP idxlist RP onconf",
 /*  83 */ "tcons ::= UNIQUE LP idxlist RP onconf",
 /*  84 */ "tcons ::= CHECK expr onconf",
 /*  85 */ "tcons ::= FOREIGN KEY LP idxlist RP REFERENCES nm idxlist_opt refargs defer_subclause_opt",
 /*  86 */ "defer_subclause_opt ::=",
 /*  87 */ "defer_subclause_opt ::= defer_subclause",
 /*  88 */ "onconf ::=",
 /*  89 */ "onconf ::= ON CONFLICT resolvetype",
 /*  90 */ "orconf ::=",
 /*  91 */ "orconf ::= OR resolvetype",
 /*  92 */ "resolvetype ::= ROLLBACK",
 /*  93 */ "resolvetype ::= ABORT",
 /*  94 */ "resolvetype ::= FAIL",
 /*  95 */ "resolvetype ::= IGNORE",
 /*  96 */ "resolvetype ::= REPLACE",
 /*  97 */ "cmd ::= DROP TABLE nm",
 /*  98 */ "cmd ::= CREATE temp VIEW nm AS select",
 /*  99 */ "cmd ::= DROP VIEW nm",
 /* 100 */ "cmd ::= select",
 /* 101 */ "select ::= oneselect",
 /* 102 */ "select ::= select multiselect_op oneselect",
 /* 103 */ "multiselect_op ::= UNION",
 /* 104 */ "multiselect_op ::= UNION ALL",
 /* 105 */ "multiselect_op ::= INTERSECT",
 /* 106 */ "multiselect_op ::= EXCEPT",
 /* 107 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt",
 /* 108 */ "distinct ::= DISTINCT",
 /* 109 */ "distinct ::= ALL",
 /* 110 */ "distinct ::=",
 /* 111 */ "sclp ::= selcollist COMMA",
 /* 112 */ "sclp ::=",
 /* 113 */ "selcollist ::= sclp expr as",
 /* 114 */ "selcollist ::= sclp STAR",
 /* 115 */ "selcollist ::= sclp nm DOT STAR",
 /* 116 */ "as ::= AS nm",
 /* 117 */ "as ::= ids",
 /* 118 */ "as ::=",
 /* 119 */ "from ::=",
 /* 120 */ "from ::= FROM seltablist",
 /* 121 */ "stl_prefix ::= seltablist joinop",
 /* 122 */ "stl_prefix ::=",
 /* 123 */ "seltablist ::= stl_prefix nm dbnm as on_opt using_opt",
 /* 124 */ "seltablist ::= stl_prefix LP seltablist_paren RP as on_opt using_opt",
 /* 125 */ "seltablist_paren ::= select",
 /* 126 */ "seltablist_paren ::= seltablist",
 /* 127 */ "dbnm ::=",
 /* 128 */ "dbnm ::= DOT nm",
 /* 129 */ "joinop ::= COMMA",
 /* 130 */ "joinop ::= JOIN",
 /* 131 */ "joinop ::= JOIN_KW JOIN",
 /* 132 */ "joinop ::= JOIN_KW nm JOIN",
 /* 133 */ "joinop ::= JOIN_KW nm nm JOIN",
 /* 134 */ "on_opt ::= ON expr",
 /* 135 */ "on_opt ::=",
 /* 136 */ "using_opt ::= USING LP idxlist RP",
 /* 137 */ "using_opt ::=",
 /* 138 */ "orderby_opt ::=",
 /* 139 */ "orderby_opt ::= ORDER BY sortlist",
 /* 140 */ "sortlist ::= sortlist COMMA sortitem collate sortorder",
 /* 141 */ "sortlist ::= sortitem collate sortorder",
 /* 142 */ "sortitem ::= expr",
 /* 143 */ "sortorder ::= ASC",
 /* 144 */ "sortorder ::= DESC",
 /* 145 */ "sortorder ::=",
 /* 146 */ "collate ::=",
 /* 147 */ "collate ::= COLLATE id",
 /* 148 */ "groupby_opt ::=",
 /* 149 */ "groupby_opt ::= GROUP BY exprlist",
 /* 150 */ "having_opt ::=",
 /* 151 */ "having_opt ::= HAVING expr",
 /* 152 */ "limit_opt ::=",
 /* 153 */ "limit_opt ::= LIMIT signed",
 /* 154 */ "limit_opt ::= LIMIT signed OFFSET signed",
 /* 155 */ "limit_opt ::= LIMIT signed COMMA signed",
 /* 156 */ "cmd ::= DELETE FROM nm dbnm where_opt",
 /* 157 */ "where_opt ::=",
 /* 158 */ "where_opt ::= WHERE expr",
 /* 159 */ "cmd ::= UPDATE orconf nm dbnm SET setlist where_opt",
 /* 160 */ "setlist ::= setlist COMMA nm EQ expr",
 /* 161 */ "setlist ::= nm EQ expr",
 /* 162 */ "cmd ::= insert_cmd INTO nm dbnm inscollist_opt VALUES LP itemlist RP",
 /* 163 */ "cmd ::= insert_cmd INTO nm dbnm inscollist_opt select",
 /* 164 */ "insert_cmd ::= INSERT orconf",
 /* 165 */ "insert_cmd ::= REPLACE",
 /* 166 */ "itemlist ::= itemlist COMMA expr",
 /* 167 */ "itemlist ::= expr",
 /* 168 */ "inscollist_opt ::=",