comparison: libidav/davqlparser.h
libidav/davqlparser.h
- changeset 102
- e9ae1318a559
- parent 98
- 237844f263b4
- child 106
- 9cec78f23cbf
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| 101:95a215337b53 | 102:e9ae1318a559 |
|---|---|
| 139 * Contains the binary information about the parsed query. | 139 * Contains the binary information about the parsed query. |
| 140 * | 140 * |
| 141 * The grammar for a DavQLStatement is: | 141 * The grammar for a DavQLStatement is: |
| 142 * | 142 * |
| 143 * <pre> | 143 * <pre> |
| 144 * Expression = Expression, BinaryOperator, Expression | 144 * Expression = AddExpression; |
| 145 * | UnaryOperator, Expression | 145 * AddExpression = MultExpression, [AddOperator, AddExpression]; |
| 146 * | FunctionCall | Identifier | Literal | 146 * MultExpression = BitwiseExpression, [MultOperator, MultExpression]; |
| 147 * | "(", Expression, ")"; | 147 * BitwiseExpression = UnaryExpression, [BitwiseOperator, BitwiseExpression]; |
| 148 * UnaryExpression = [UnaryOperator], (AtomicExpression | ParExpression); | |
| 149 * AtomicExpression = FunctionCall | Identifier | Literal; | |
| 150 * ParExpression = "(", Expression, ")"; | |
| 151 * | |
| 152 * BitwiseOperator = "&" | "|" | "^"; | |
| 153 * MultOperator = "*" | "/"; | |
| 154 * AddOperator = "+" | "-"; | |
| 155 * UnaryOperator = "+" | "-" | "~"; | |
| 148 * | 156 * |
| 149 * FunctionCall = Identifier, "(", ArgumentList, ")"; | 157 * FunctionCall = Identifier, "(", ArgumentList, ")"; |
| 150 * ArgumentList = Expression, {",", Expression}; | 158 * ArgumentList = Expression, {",", Expression}; |
| 151 * Identifier = IdentifierChar - ?Digit?, {IdentifierChar} | 159 * Identifier = IdentifierChar - ?Digit?, {IdentifierChar} |
| 152 * | "`", ?Character? - "`", {?Character? - "`"}, "`"; | 160 * | "`", ?Character? - "`", {?Character? - "`"}, "`"; |
| 154 * Literal = Number | String | Timestamp; | 162 * Literal = Number | String | Timestamp; |
| 155 * Number = ?Digit?, {?Digit?} | "%d"; | 163 * Number = ?Digit?, {?Digit?} | "%d"; |
| 156 * String = "'", {?Character? - "'" | "'''"} , "'" | "%s"; | 164 * String = "'", {?Character? - "'" | "'''"} , "'" | "%s"; |
| 157 * Timestamp = "%t"; // TODO: maybe introduce a real literal | 165 * Timestamp = "%t"; // TODO: maybe introduce a real literal |
| 158 * | 166 * |
| 159 * LogicalExpression = LogicalExpression, LogicalOperator, LogicalExpression | 167 * LogicalExpression = "not ", LogicalExpression |
| 160 * | "not ", LogicalExpression | 168 * | "(", LogicalExpression, ")" |
| 161 * | Expression, Comparison, Expression | 169 * | BooleanExpression, [LogicalOperator, LogicalExpression]; |
| 170 * BooleanExpression = Expression, Comparison, Expression | |
| 162 * | Expression, (" like " | " unlike "), String | 171 * | Expression, (" like " | " unlike "), String |
| 163 * | "(", LogicalExpression, ")"; | 172 * | FunctionCall | Identifier; |
| 164 * | 173 * |
| 165 * UnaryOperator = "-" | "~"; | |
| 166 * BinaryOperator = "+" | "-" | "*" | "/" | "&" | "|" | "^"; | |
| 167 * LogicalOperator = " and " | " or " | " xor "; | 174 * LogicalOperator = " and " | " or " | " xor "; |
| 168 * Comparison = | "=" | "<" | ">" | "<=" | ">=" | "!="; | 175 * Comparison = | "=" | "<" | ">" | "<=" | ">=" | "!="; |
| 169 * | 176 * |
| 170 * FieldExpressions = "*", {",", Expression, " as ", Identifier} | 177 * FieldExpressions = "*", {",", Expression, " as ", Identifier} |
| 171 * | FieldExpression, {",", FieldExpression} | 178 * | FieldExpression, {",", FieldExpression} |
| 172 * | "-"; | 179 * | "-"; |
| 173 * FieldExpression = Identifier | 180 * FieldExpression = Identifier |
| 174 * | Expression, " as ", Identifier; | 181 * | Expression, " as ", Identifier; |
| 175 * SetExpressions = SetExpression, {",", SetExpressions}; | 182 * SetExpressions = SetExpression, {",", SetExpression}; |
| 176 * SetExpression = Identifier, "=", Expression; | 183 * SetExpression = Identifier, "=", Expression; |
| 177 * | 184 * |
| 178 * Path = "%s" | 185 * Path = "%s" |
| 179 * | "/", {?Character? - " "} | 186 * | "/", {?Character? - " "} |
| 180 * | "'/", {?Character?}, "'"; | 187 * | "'/", {?Character?}, "'"; |
