tokenize.c File Reference

#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "query.h"
#include "sql.tab.h"

Include dependency graph for tokenize.c:

Go to the source code of this file.

Classes
struct	Keyword

Macros
#define	MAX_TOKEN_LEN   11
#define	X(str)   str, ARRAY_SIZE(str) - 1

Typedefs
typedef struct Keyword	Keyword

Functions
static int __cdecl	compKeyword (const void *m1, const void *m2)
static int	sqliteKeywordCode (const WCHAR *z, int n)
static int	isDigit (WCHAR c)
static int	isSpace (WCHAR c)
int	sqliteGetToken (const WCHAR *z, int *tokenType, int *skip)

Variables
static const Keyword	aKeywordTable []
static const char	isIdChar []

Macro Definition Documentation

MAX_TOKEN_LEN

#define MAX_TOKEN_LEN   11

Definition at line 39 of file tokenize.c.

X

#define X

(

str

)

str, ARRAY_SIZE(str) - 1

Definition at line 45 of file tokenize.c.

Typedef Documentation

Keyword

_In_ UCHAR _In_ ULONGLONG Keyword

Definition at line 32 of file tokenize.c.

Function Documentation

compKeyword()

static int __cdecl compKeyword ( const void *  m1, const void *  m2  )

static

Definition at line 90 of file tokenize.c.

                                                              {
  const Keyword *k1 = m1, *k2 = m2;
  int ret, len = min( k1->len, k2->len );
 
  if ((ret = wcsnicmp( k1->name, k2->name, len ))) return ret;
  if (k1->len < k2->len) return -1;
  else if (k1->len > k2->len) return 1;
  return 0;
}

Referenced by sqliteKeywordCode().

isDigit()

static int isDigit ( WCHAR  c )

inlinestatic

Definition at line 154 of file tokenize.c.

{
    return c >= '0' && c <= '9';
}

Referenced by sqliteGetToken().

isSpace()

static int isSpace ( WCHAR  c )

inlinestatic

Definition at line 162 of file tokenize.c.

{
    return c == ' ' || c == '\t' || c == '\n' || c == '\f';
}

Referenced by sqliteGetToken().

sqliteGetToken()

int sqliteGetToken	(	const WCHAR *	z,
		int *	tokenType,
		int *	skip
	)

Definition at line 172 of file tokenize.c.

                                                             {
  int i;
 
  *skip = 0;
  switch( *z ){
    case ' ': case '\t': case '\n': case '\f':
      for(i=1; isSpace(z[i]); i++){}
      *tokenType = TK_SPACE;
      return i;
    case '-':
      if( z[1]==0 ) return -1;
      *tokenType = TK_MINUS;
      return 1;
    case '(':
      *tokenType = TK_LP;
      return 1;
    case ')':
      *tokenType = TK_RP;
      return 1;
    case '*':
      *tokenType = TK_STAR;
      return 1;
    case '=':
      *tokenType = TK_EQ;
      return 1;
    case '<':
      if( z[1]=='=' ){
        *tokenType = TK_LE;
        return 2;
      }else if( z[1]=='>' ){
        *tokenType = TK_NE;
        return 2;
      }else{
        *tokenType = TK_LT;
        return 1;
      }
    case '>':
      if( z[1]=='=' ){
        *tokenType = TK_GE;
        return 2;
      }else{
        *tokenType = TK_GT;
        return 1;
      }
    case '!':
      if( z[1]!='=' ){
        *tokenType = TK_ILLEGAL;
        return 2;
      }else{
        *tokenType = TK_NE;
        return 2;
      }
    case '?':
      *tokenType = TK_WILDCARD;
      return 1;
    case ',':
      *tokenType = TK_COMMA;
      return 1;
    case '`': case '\'': {
      int delim = z[0];
      for(i=1; z[i]; i++){
        if( z[i]==delim )
          break;
      }
      if( z[i] ) i++;
      if( delim == '`' )
        *tokenType = TK_ID;
      else
        *tokenType = TK_STRING;
      return i;
    }
    case '.':
      if( !isDigit(z[1]) ){
        *tokenType = TK_DOT;
        return 1;
      }
      /* Fall through */
    case '0': case '1': case '2': case '3': case '4':
    case '5': case '6': case '7': case '8': case '9':
      *tokenType = TK_INTEGER;
      for(i=1; isDigit(z[i]); i++){}
      return i;
    case '[':
      for(i=1; z[i] && z[i-1]!=']'; i++){}
      *tokenType = TK_ID;
      return i;
    default:
      if( !isIdChar[*z] ){
        break;
      }
      for(i=1; isIdChar[z[i]]; i++){}
      *tokenType = sqliteKeywordCode(z, i);
      if( *tokenType == TK_ID && z[i] == '`' ) *skip = 1;
      return i;
  }
  *tokenType = TK_ILLEGAL;
  return 1;
}

sqliteKeywordCode()

static int sqliteKeywordCode ( const WCHAR *  z, int  n  )

static

Definition at line 105 of file tokenize.c.

                                                   {
  Keyword key, *r;
 
  if( n>MAX_TOKEN_LEN )
    return TK_ID;
 
  key.tokenType = 0;
  key.name = z;
  key.len = n;
  r = bsearch( &key, aKeywordTable, ARRAY_SIZE(aKeywordTable), sizeof(Keyword), compKeyword );
  if( r )
    return r->tokenType;
  return TK_ID;
}

Referenced by sqliteGetToken().

Variable Documentation

aKeywordTable

const Keyword aKeywordTable[]

static

Definition at line 46 of file tokenize.c.

Referenced by sqliteKeywordCode().

isIdChar

const char isIdChar[]

static

Initial value:

= {
 
    0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,  
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,  
    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, 0, 0, 0, 0, 1,  
    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, 0, 0, 0, 0, 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, 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, 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,  
}

Definition at line 131 of file tokenize.c.

Referenced by sqliteGetToken().