/* ** Return the length (in bytes) of the token that begins at z[0]. ** Store the token type in *tokenType before returning. */ int sqlite3GetToken(const unsigned char *z, int *tokenType){ int i, c; switch( aiClass[*z] ){ /* Switch on the character-class of the first byte ** of the token. See the comment on the CC_ defines ** above. */ case CC_SPACE: { testcase( z[0]==' ' ); testcase( z[0]=='\t' ); testcase( z[0]=='\n' ); testcase( z[0]=='\f' ); testcase( z[0]=='\r' ); for(i=1; sqlite3Isspace(z[i]); i++){} *tokenType = TK_SPACE; return i; } case CC_MINUS: { if( z[1]=='-' ){ for(i=2; (c=z[i])!=0 && c!='\n'; i++){} *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ return i; } *tokenType = TK_MINUS; return 1; } case CC_LP: { *tokenType = TK_LP; return 1; } case CC_RP: { *tokenType = TK_RP; return 1; } case CC_SEMI: { *tokenType = TK_SEMI; return 1; } case CC_PLUS: { *tokenType = TK_PLUS; return 1; } case CC_STAR: { *tokenType = TK_STAR; return 1; } case CC_SLASH: { if( z[1]!='*' || z[2]==0 ){ *tokenType = TK_SLASH; return 1; } for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){} if( c ) i++; *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ return i; } case CC_PERCENT: { *tokenType = TK_REM; return 1; } case CC_EQ: { *tokenType = TK_EQ; return 1 + (z[1]=='='); } case CC_LT: { if( (c=z[1])=='=' ){ *tokenType = TK_LE; return 2; }else if( c=='>' ){ *tokenType = TK_NE; return 2; }else if( c=='<' ){ *tokenType = TK_LSHIFT; return 2; }else{ *tokenType = TK_LT; return 1; } } case CC_GT: { if( (c=z[1])=='=' ){ *tokenType = TK_GE; return 2; }else if( c=='>' ){ *tokenType = TK_RSHIFT; return 2; }else{ *tokenType = TK_GT; return 1; } } case CC_BANG: { if( z[1]!='=' ){ *tokenType = TK_ILLEGAL; return 1; }else{ *tokenType = TK_NE; return 2; } } case CC_PIPE: { if( z[1]!='|' ){ *tokenType = TK_BITOR; return 1; }else{ *tokenType = TK_CONCAT; return 2; } } case CC_COMMA: { *tokenType = TK_COMMA; return 1; } case CC_AND: { *tokenType = TK_BITAND; return 1; } case CC_TILDA: { *tokenType = TK_BITNOT; return 1; } case CC_QUOTE: { int delim = z[0]; testcase( delim=='`' ); testcase( delim=='\'' ); testcase( delim=='"' ); for(i=1; (c=z[i])!=0; i++){ if( c==delim ){ if( z[i+1]==delim ){ i++; }else{ break; } } } if( c=='\'' ){ *tokenType = TK_STRING; return i+1; }else if( c!=0 ){ *tokenType = TK_ID; return i+1; }else{ *tokenType = TK_ILLEGAL; return i; } } case CC_DOT: { #ifndef SQLITE_OMIT_FLOATING_POINT if( !sqlite3Isdigit(z[1]) ) #endif { *tokenType = TK_DOT; return 1; } /* If the next character is a digit, this is a floating point ** number that begins with ".". Fall thru into the next case */ } case CC_DIGIT: { testcase( z[0]=='0' ); testcase( z[0]=='1' ); testcase( z[0]=='2' ); testcase( z[0]=='3' ); testcase( z[0]=='4' ); testcase( z[0]=='5' ); testcase( z[0]=='6' ); testcase( z[0]=='7' ); testcase( z[0]=='8' ); testcase( z[0]=='9' ); *tokenType = TK_INTEGER; #ifndef SQLITE_OMIT_HEX_INTEGER if( z[0]=='0' && (z[1]=='x' || z[1]=='X') && sqlite3Isxdigit(z[2]) ){ for(i=3; sqlite3Isxdigit(z[i]); i++){} return i; } #endif for(i=0; sqlite3Isdigit(z[i]); i++){} #ifndef SQLITE_OMIT_FLOATING_POINT if( z[i]=='.' ){ i++; while( sqlite3Isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } if( (z[i]=='e' || z[i]=='E') && ( sqlite3Isdigit(z[i+1]) || ((z[i+1]=='+' || z[i+1]=='-') && sqlite3Isdigit(z[i+2])) ) ){ i += 2; while( sqlite3Isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } #endif while( IdChar(z[i]) ){ *tokenType = TK_ILLEGAL; i++; } return i; } case CC_QUOTE2: { for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} *tokenType = c==']' ? TK_ID : TK_ILLEGAL; return i; } case CC_VARNUM: { *tokenType = TK_VARIABLE; for(i=1; sqlite3Isdigit(z[i]); i++){} return i; } case CC_DOLLAR: case CC_VARALPHA: { int n = 0; testcase( z[0]=='$' ); testcase( z[0]=='@' ); testcase( z[0]==':' ); testcase( z[0]=='#' ); *tokenType = TK_VARIABLE; for(i=1; (c=z[i])!=0; i++){ if( IdChar(c) ){ n++; #ifndef SQLITE_OMIT_TCL_VARIABLE }else if( c=='(' && n>0 ){ do{ i++; }while( (c=z[i])!=0 && !sqlite3Isspace(c) && c!=')' ); if( c==')' ){ i++; }else{ *tokenType = TK_ILLEGAL; } break; }else if( c==':' && z[i+1]==':' ){ i++; #endif }else{ break; } } if( n==0 ) *tokenType = TK_ILLEGAL; return i; } case CC_KYWD: { for(i=1; aiClass[z[i]]<=CC_KYWD; i++){} if( IdChar(z[i]) ){ /* This token started out using characters that can appear in keywords, ** but z[i] is a character not allowed within keywords, so this must ** be an identifier instead */ i++; break; } *tokenType = TK_ID; return keywordCode((char*)z, i, tokenType); } case CC_X: { #ifndef SQLITE_OMIT_BLOB_LITERAL testcase( z[0]=='x' ); testcase( z[0]=='X' ); if( z[1]=='\'' ){ *tokenType = TK_BLOB; for(i=2; sqlite3Isxdigit(z[i]); i++){} if( z[i]!='\'' || i%2 ){ *tokenType = TK_ILLEGAL; while( z[i] && z[i]!='\'' ){ i++; } } if( z[i] ) i++; return i; } #endif /* If it is not a BLOB literal, then it must be an ID, since no ** SQL keywords start with the letter 'x'. Fall through */ } case CC_ID: { i = 1; break; } case CC_NUL: { *tokenType = TK_ILLEGAL; return 0; } default: { *tokenType = TK_ILLEGAL; return 1; } } while( IdChar(z[i]) ){ i++; } *tokenType = TK_ID; return i; }
/* ** Return the length of the token that begins at z[0]. ** Store the token type in *tokenType before returning. */ static int getToken(const unsigned char *z, int *tokenType){ int i, c; switch( *z ){ case ' ': case '\t': case '\n': case '\f': case '\r': { for(i=1; isspace(z[i]); i++){} *tokenType = TK_SPACE; return i; } case '-': { if( z[1]=='-' ){ for(i=2; (c=z[i])!=0 && c!='\n'; i++){} *tokenType = TK_COMMENT; return i; } *tokenType = TK_MINUS; return 1; } case '(': { *tokenType = TK_LP; return 1; } case ')': { *tokenType = TK_RP; return 1; } case ';': { *tokenType = TK_SEMI; return 1; } case '+': { *tokenType = TK_PLUS; return 1; } case '*': { *tokenType = TK_STAR; return 1; } case '/': { if( z[1]!='*' || z[2]==0 ){ *tokenType = TK_SLASH; return 1; } for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){} if( c ) i++; *tokenType = TK_COMMENT; return i; } case '%': { *tokenType = TK_REM; return 1; } case '=': { *tokenType = TK_EQ; return 1 + (z[1]=='='); } case '<': { if( (c=z[1])=='=' ){ *tokenType = TK_LE; return 2; }else if( c=='>' ){ *tokenType = TK_NE; return 2; }else if( c=='<' ){ *tokenType = TK_LSHIFT; return 2; }else{ *tokenType = TK_LT; return 1; } } case '>': { if( (c=z[1])=='=' ){ *tokenType = TK_GE; return 2; }else if( c=='>' ){ *tokenType = TK_RSHIFT; return 2; }else{ *tokenType = TK_GT; return 1; } } case '!': { if( z[1]!='=' ){ *tokenType = TK_ILLEGAL; return 2; }else{ *tokenType = TK_NE; return 2; } } case '|': { if( z[1]!='|' ){ *tokenType = TK_BITOR; return 1; }else{ *tokenType = TK_CONCAT; return 2; } } case ',': { *tokenType = TK_COMMA; return 1; } case '&': { *tokenType = TK_BITAND; return 1; } case '~': { *tokenType = TK_BITNOT; return 1; } case '#': { for(i=1; isdigit(z[i]) || (i==1 && z[1]=='-'); i++){} *tokenType = TK_REGISTER; return i; } case '\'': case '"': { int delim = z[0]; for(i=1; (c=z[i])!=0; i++){ if( c==delim ){ if( z[i+1]==delim ){ i++; }else{ break; } } } if( c ) i++; *tokenType = TK_STRING; return i; } case '.': { *tokenType = TK_DOT; return 1; } 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++){} #ifndef SQLITE_OMIT_FLOATING_POINT if( z[i]=='.' && isdigit(z[i+1]) ){ i += 2; while( isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } if( (z[i]=='e' || z[i]=='E') && ( isdigit(z[i+1]) || ((z[i+1]=='+' || z[i+1]=='-') && isdigit(z[i+2])) ) ){ i += 2; while( isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } #endif return i; } case '[': { for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} *tokenType = TK_ID; return i; } case '?': { *tokenType = TK_VARIABLE; for(i=1; isdigit(z[i]); i++){} return i; } case ':': { for(i=1; IdChar(z[i]); i++){} *tokenType = i>1 ? TK_VARIABLE : TK_ILLEGAL; return i; } #ifndef SQLITE_OMIT_TCL_VARIABLE case '$': { *tokenType = TK_VARIABLE; if( z[1]=='{' ){ int nBrace = 1; for(i=2; (c=z[i])!=0 && nBrace; i++){ if( c=='{' ){ nBrace++; }else if( c=='}' ){ nBrace--; } } if( c==0 ) *tokenType = TK_ILLEGAL; }else{ int n = 0; for(i=1; (c=z[i])!=0; i++){ if( isalnum(c) || c=='_' ){ n++; }else if( c=='(' && n>0 ){ do{ i++; }while( (c=z[i])!=0 && !isspace(c) && c!=')' ); if( c==')' ){ i++; }else{ *tokenType = TK_ILLEGAL; } break; }else if( c==':' && z[i+1]==':' ){ i++; }else{ break; } } if( n==0 ) *tokenType = TK_ILLEGAL; } return i; } #endif #ifndef SQLITE_OMIT_BLOB_LITERAL case 'x': case 'X': { if( (c=z[1])=='\'' || c=='"' ){ int delim = c; *tokenType = TK_BLOB; for(i=2; (c=z[i])!=0; i++){ if( c==delim ){ if( i%2 ) *tokenType = TK_ILLEGAL; break; } if( !isxdigit(c) ){ *tokenType = TK_ILLEGAL; return i; } } if( c ) i++; return i; } /* Otherwise fall through to the next case */ } #endif default: { if( !IdChar(*z) ){ break; } for(i=1; IdChar(z[i]); i++){} *tokenType = keywordCode((char*)z, i); return i; } } *tokenType = TK_ILLEGAL; return 1; }
/* ** Return the length of the token that begins at z[0]. ** Store the token type in *tokenType before returning. */ static int getToken(const unsigned char *z, int *tokenType){ int i, c; switch( *z ){ case ' ': case '\t': case '\n': case '\f': case '\r': { for(i=1; isspace(z[i]); i++){} *tokenType = TK_SPACE; return i; } case '-': { if( z[1]=='-' ){ for(i=2; (c=z[i])!=0 && c!='\n'; i++){} *tokenType = TK_COMMENT; return i; } *tokenType = TK_MINUS; return 1; } case '(': { *tokenType = TK_LP; return 1; } case ')': { *tokenType = TK_RP; return 1; } case ';': { *tokenType = TK_SEMI; return 1; } case '+': { *tokenType = TK_PLUS; return 1; } case '*': { *tokenType = TK_STAR; return 1; } case '/': { if( z[1]!='*' || z[2]==0 ){ *tokenType = TK_SLASH; return 1; } for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){} if( c ) i++; *tokenType = TK_COMMENT; return i; } case '%': { *tokenType = TK_REM; return 1; } case '=': { *tokenType = TK_EQ; return 1 + (z[1]=='='); } case '<': { if( (c=z[1])=='=' ){ *tokenType = TK_LE; return 2; }else if( c=='>' ){ *tokenType = TK_NE; return 2; }else if( c=='<' ){ *tokenType = TK_LSHIFT; return 2; }else{ *tokenType = TK_LT; return 1; } } case '>': { if( (c=z[1])=='=' ){ *tokenType = TK_GE; return 2; }else if( c=='>' ){ *tokenType = TK_RSHIFT; return 2; }else{ *tokenType = TK_GT; return 1; } } case '!': { if( z[1]!='=' ){ *tokenType = TK_ILLEGAL; return 2; }else{ *tokenType = TK_NE; return 2; } } case '|': { if( z[1]!='|' ){ *tokenType = TK_BITOR; return 1; }else{ *tokenType = TK_CONCAT; return 2; } } case ',': { *tokenType = TK_COMMA; return 1; } case '&': { *tokenType = TK_BITAND; return 1; } case '~': { *tokenType = TK_BITNOT; return 1; } case '`': case '\'': case '"': { int delim = z[0]; for(i=1; (c=z[i])!=0; i++){ if( c==delim ){ if( z[i+1]==delim ){ i++; }else{ break; } } } if( c ){ *tokenType = TK_STRING; return i+1; }else{ *tokenType = TK_ILLEGAL; return i; } } case '.': { #ifndef SQLITE_OMIT_FLOATING_POINT if( !isdigit(z[1]) ) #endif { *tokenType = TK_DOT; return 1; } /* If the next character is a digit, this is a floating point ** number that begins with ".". Fall thru into the next case */ } 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=0; isdigit(z[i]); i++){} #ifndef SQLITE_OMIT_FLOATING_POINT if( z[i]=='.' ){ i++; while( isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } if( (z[i]=='e' || z[i]=='E') && ( isdigit(z[i+1]) || ((z[i+1]=='+' || z[i+1]=='-') && isdigit(z[i+2])) ) ){ i += 2; while( isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } #endif return i; } case '[': { for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} *tokenType = TK_ID; return i; } case '?': { *tokenType = TK_VARIABLE; for(i=1; isdigit(z[i]); i++){} return i; } case '#': { for(i=1; isdigit(z[i]); i++){} if( i>1 ){ /* Parameters of the form #NNN (where NNN is a number) are used ** internally by sqlite3NestedParse. */ *tokenType = TK_REGISTER; return i; } /* Fall through into the next case if the '#' is not followed by ** a digit. Try to match #AAAA where AAAA is a parameter name. */ } #ifndef SQLITE_OMIT_TCL_VARIABLE case '$': #endif case '@': case ':': { /* For compatibility with MS SQL Server */ int n = 0; if ( z[0] == '@' && z[1] == '@') { *tokenType = TK_VARIABLE1; i = 2; } else { *tokenType = TK_VARIABLE; i = 1; } for(; (c=z[i])!=0; i++){ if( IdChar(c) ){ n++; #ifndef SQLITE_OMIT_TCL_VARIABLE }else if( c=='(' && n>0 ){ do{ i++; }while( (c=z[i])!=0 && !isspace(c) && c!=')' ); if( c==')' ){ i++; }else{ *tokenType = TK_ILLEGAL; } break; }else if( c==':' && z[i+1]==':' ){ i++; #endif } else{ break; } } if( n==0 ) *tokenType = TK_ILLEGAL; return i; } #ifndef SQLITE_OMIT_BLOB_LITERAL case 'x': case 'X': { if( (c=z[1])=='\'' || c=='"' ){ int delim = c; *tokenType = TK_BLOB; for(i=2; (c=z[i])!=0; i++){ if( c==delim ){ if( i%2 ) *tokenType = TK_ILLEGAL; break; } if( !isxdigit(c) ){ *tokenType = TK_ILLEGAL; return i; } } if( c ) i++; return i; } /* Otherwise fall through to the next case */ } #endif default: { if( !IdChar(*z) ){ break; } for(i=1; IdChar(z[i]) || isdigit(z[i]) ; i++){} *tokenType = keywordCode((char*)z, i); return i; } } *tokenType = TK_ILLEGAL; return 1; }
/* ** Return the length of the token that begins at z[0]. ** Store the token type in *tokenType before returning. */ int sqlite3GetToken(const unsigned char *z, int *tokenType){ int i, c; switch( *z ){ case ' ': case '\t': case '\n': case '\f': case '\r': { testcase( z[0]==' ' ); testcase( z[0]=='\t' ); testcase( z[0]=='\n' ); testcase( z[0]=='\f' ); testcase( z[0]=='\r' ); for(i=1; sqlite3Isspace(z[i]); i++){} *tokenType = TK_SPACE; return i; } case '-': { if( z[1]=='-' ){ for(i=2; (c=z[i])!=0 && c!='\n'; i++){} *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ return i; } *tokenType = TK_MINUS; return 1; } case '(': { *tokenType = TK_LP; return 1; } case ')': { *tokenType = TK_RP; return 1; } case ';': { *tokenType = TK_SEMI; return 1; } case '+': { *tokenType = TK_PLUS; return 1; } case '*': { *tokenType = TK_STAR; return 1; } case '/': { if( z[1]!='*' || z[2]==0 ){ *tokenType = TK_SLASH; return 1; } for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){} if( c ) i++; *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ return i; } case '%': { *tokenType = TK_REM; return 1; } case '=': { *tokenType = TK_EQ; return 1 + (z[1]=='='); } case '<': { if( (c=z[1])=='=' ){ *tokenType = TK_LE; return 2; }else if( c=='>' ){ *tokenType = TK_NE; return 2; }else if( c=='<' ){ *tokenType = TK_LSHIFT; return 2; }else{ *tokenType = TK_LT; return 1; } } case '>': { if( (c=z[1])=='=' ){ *tokenType = TK_GE; return 2; }else if( c=='>' ){ *tokenType = TK_RSHIFT; return 2; }else{ *tokenType = TK_GT; return 1; } } case '!': { if( z[1]!='=' ){ *tokenType = TK_ILLEGAL; return 2; }else{ *tokenType = TK_NE; return 2; } } case '|': { if( z[1]!='|' ){ *tokenType = TK_BITOR; return 1; }else{ *tokenType = TK_CONCAT; return 2; } } case ',': { *tokenType = TK_COMMA; return 1; } case '&': { *tokenType = TK_BITAND; return 1; } case '~': { *tokenType = TK_BITNOT; return 1; } case '`': case '\'': case '"': { int delim = z[0]; testcase( delim=='`' ); testcase( delim=='\'' ); testcase( delim=='"' ); for(i=1; (c=z[i])!=0; i++){ if( c==delim ){ if( z[i+1]==delim ){ i++; }else{ break; } } } if( c=='\'' ){ *tokenType = TK_STRING; return i+1; }else if( c!=0 ){ *tokenType = TK_ID; return i+1; }else{ *tokenType = TK_ILLEGAL; return i; } } case '.': { #ifndef SQLITE_OMIT_FLOATING_POINT if( !sqlite3Isdigit(z[1]) ) #endif { *tokenType = TK_DOT; return 1; } /* If the next character is a digit, this is a floating point ** number that begins with ".". Fall thru into the next case */ } case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': { testcase( z[0]=='0' ); testcase( z[0]=='1' ); testcase( z[0]=='2' ); testcase( z[0]=='3' ); testcase( z[0]=='4' ); testcase( z[0]=='5' ); testcase( z[0]=='6' ); testcase( z[0]=='7' ); testcase( z[0]=='8' ); testcase( z[0]=='9' ); *tokenType = TK_INTEGER; #ifndef SQLITE_OMIT_HEX_INTEGER if( z[0]=='0' && (z[1]=='x' || z[1]=='X') && sqlite3Isxdigit(z[2]) ){ for(i=3; sqlite3Isxdigit(z[i]); i++){} return i; } #endif for(i=0; sqlite3Isdigit(z[i]); i++){} #ifndef SQLITE_OMIT_FLOATING_POINT if( z[i]=='.' ){ i++; while( sqlite3Isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } if( (z[i]=='e' || z[i]=='E') && ( sqlite3Isdigit(z[i+1]) || ((z[i+1]=='+' || z[i+1]=='-') && sqlite3Isdigit(z[i+2])) ) ){ i += 2; while( sqlite3Isdigit(z[i]) ){ i++; } *tokenType = TK_FLOAT; } #endif while( IdChar(z[i]) ){ *tokenType = TK_ILLEGAL; i++; } return i; } case '[': { for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} *tokenType = c==']' ? TK_ID : TK_ILLEGAL; return i; } case '?': { *tokenType = TK_VARIABLE; for(i=1; sqlite3Isdigit(z[i]); i++){} return i; } #ifndef SQLITE_OMIT_TCL_VARIABLE case '$': #endif case '@': /* For compatibility with MS SQL Server */ case '#': case ':': { int n = 0; testcase( z[0]=='$' ); testcase( z[0]=='@' ); testcase( z[0]==':' ); testcase( z[0]=='#' ); *tokenType = TK_VARIABLE; for(i=1; (c=z[i])!=0; i++){ if( IdChar(c) ){ n++; #ifndef SQLITE_OMIT_TCL_VARIABLE }else if( c=='(' && n>0 ){ do{ i++; }while( (c=z[i])!=0 && !sqlite3Isspace(c) && c!=')' ); if( c==')' ){ i++; }else{ *tokenType = TK_ILLEGAL; } break; }else if( c==':' && z[i+1]==':' ){ i++; #endif }else{ break; } } if( n==0 ) *tokenType = TK_ILLEGAL; return i; } #ifndef SQLITE_OMIT_BLOB_LITERAL case 'x': case 'X': { testcase( z[0]=='x' ); testcase( z[0]=='X' ); if( z[1]=='\'' ){ *tokenType = TK_BLOB; for(i=2; sqlite3Isxdigit(z[i]); i++){} if( z[i]!='\'' || i%2 ){ *tokenType = TK_ILLEGAL; while( z[i] && z[i]!='\'' ){ i++; } } if( z[i] ) i++; return i; } /* Otherwise fall through to the next case */ } #endif default: { if( !IdChar(*z) ){ break; } for(i=1; IdChar(z[i]); i++){} *tokenType = keywordCode((char*)z, i); return i; } } *tokenType = TK_ILLEGAL; return 1; }