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comparison: libidav/davqlparser.h

libidav/davqlparser.h

changeset 747
efbd59642577
parent 365
f04ab0420512
equal deleted inserted replaced
746:a569148841ff 747:efbd59642577
32 #ifdef __cplusplus 32 #ifdef __cplusplus
33 extern "C" { 33 extern "C" {
34 #endif 34 #endif
35 35
36 #include <stdint.h> 36 #include <stdint.h>
37 #include "ucx/string.h" 37 #include <cx/string.h>
38 #include "ucx/list.h" 38 #include <cx/list.h>
39 39
40 /** 40 /**
41 * Enumeration of possible statement types. 41 * Enumeration of possible statement types.
42 */ 42 */
43 typedef enum {DAVQL_ERROR, DAVQL_SELECT, DAVQL_SET} davqltype_t; 43 typedef enum {DAVQL_ERROR, DAVQL_SELECT, DAVQL_SET} davqltype_t;
72 DAVQL_NOT, DAVQL_LAND, DAVQL_LOR, DAVQL_LXOR, // logical 72 DAVQL_NOT, DAVQL_LAND, DAVQL_LOR, DAVQL_LXOR, // logical
73 DAVQL_EQ, DAVQL_NEQ, DAVQL_LT, DAVQL_GT, DAVQL_LE, DAVQL_GE, 73 DAVQL_EQ, DAVQL_NEQ, DAVQL_LT, DAVQL_GT, DAVQL_LE, DAVQL_GE,
74 DAVQL_LIKE, DAVQL_UNLIKE // comparisons 74 DAVQL_LIKE, DAVQL_UNLIKE // comparisons
75 } davqloperator_t; 75 } davqloperator_t;
76 76
77 typedef struct { 77 typedef struct DavQLToken DavQLToken;
78 struct DavQLToken {
78 davqltokenclass_t tokenclass; 79 davqltokenclass_t tokenclass;
79 sstr_t value; 80 cxstring value;
80 } DavQLToken; 81 DavQLToken *prev;
82 DavQLToken *next;
83 };
81 84
82 /** 85 /**
83 * An expression within a DAVQL query. 86 * An expression within a DAVQL query.
84 */ 87 */
85 typedef struct _davqlexpr DavQLExpression; 88 typedef struct _davqlexpr DavQLExpression;
90 struct _davqlexpr { 93 struct _davqlexpr {
91 /** 94 /**
92 * The original expression text. 95 * The original expression text.
93 * Contains the literal value, if type is LITERAL. 96 * Contains the literal value, if type is LITERAL.
94 */ 97 */
95 sstr_t srctext; 98 cxstring srctext;
96 /** 99 /**
97 * The expression type. 100 * The expression type.
98 */ 101 */
99 davqlexprtype_t type; 102 davqlexprtype_t type;
100 /** 103 /**
137 * <ul> 140 * <ul>
138 * <li>SELECT: the identifier or an alias name</li> 141 * <li>SELECT: the identifier or an alias name</li>
139 * <li>SET: the identifier</li> 142 * <li>SET: the identifier</li>
140 * </ul> 143 * </ul>
141 */ 144 */
142 sstr_t name; 145 cxstring name;
143 /** 146 /**
144 * The field expression. 147 * The field expression.
145 * <ul> 148 * <ul>
146 * <li>SELECT: the queried property (identifier) or an expression</li> 149 * <li>SELECT: the queried property (identifier) or an expression</li>
147 * <li>SET: the expression for the value to be set</li> 150 * <li>SET: the expression for the value to be set</li>
240 */ 243 */
241 typedef struct { 244 typedef struct {
242 /** 245 /**
243 * The original query text. 246 * The original query text.
244 */ 247 */
245 sstr_t srctext; 248 cxstring srctext;
246 /** 249 /**
247 * The statement type. 250 * The statement type.
248 */ 251 */
249 davqltype_t type; 252 davqltype_t type;
250 /** 253 /**
256 */ 259 */
257 char* errormessage; 260 char* errormessage;
258 /** 261 /**
259 * The list of DavQLFields. 262 * The list of DavQLFields.
260 */ 263 */
261 UcxList* fields; 264 CxList* fields;
262 /** 265 /**
263 * A string that denotes the queried path. 266 * A string that denotes the queried path.
264 */ 267 */
265 sstr_t path; 268 cxstring path;
266 /** 269 /**
267 * Logical expression for selection. 270 * Logical expression for selection.
268 * <code>NULL</code>, if there is no where clause. 271 * <code>NULL</code>, if there is no where clause.
269 */ 272 */
270 DavQLExpression* where; 273 DavQLExpression* where;
271 /** 274 /**
272 * The list of DavQLOrderCriterions. 275 * The list of DavQLOrderCriterions.
273 * This is <code>NULL</code> for SET queries and may be <code>NULL</code> 276 * This is <code>NULL</code> for SET queries and may be <code>NULL</code>
274 * if the result doesn't need to be sorted. 277 * if the result doesn't need to be sorted.
275 */ 278 */
276 UcxList* orderby; 279 CxList* orderby;
277 /** 280 /**
278 * The recursion depth for the statement. 281 * The recursion depth for the statement.
279 * Defaults to 1. 282 * Defaults to 1.
280 * Magic numbers are DAV_DEPTH_INFINITY for infinity and 283 * Magic numbers are DAV_DEPTH_INFINITY for infinity and
281 * DAV_DEPTH_PLACEHOLDER for a placeholder. 284 * DAV_DEPTH_PLACEHOLDER for a placeholder.
282 */ 285 */
283 int depth; 286 int depth;
284 /** 287 /**
285 * A list of all required arguments 288 * A list of all required arguments
286 */ 289 */
287 UcxList* args; 290 CxList* args;
288 } DavQLStatement; 291 } DavQLStatement;
289 292
290 /** Infinity recursion depth for a DavQLStatement. */ 293 /** Infinity recursion depth for a DavQLStatement. */
291 #define DAV_DEPTH_INFINITY -1 294 #define DAV_DEPTH_INFINITY -1
292 295
348 /** 351 /**
349 * Parses a statement. 352 * Parses a statement.
350 * @param stmt the sstr_t containing the statement 353 * @param stmt the sstr_t containing the statement
351 * @return a DavQLStatement object 354 * @return a DavQLStatement object
352 */ 355 */
353 DavQLStatement* dav_parse_statement(sstr_t stmt); 356 DavQLStatement* dav_parse_statement(cxstring stmt);
354 357
355 /** 358 /**
356 * Implicitly converts a cstr to a sstr_t and calls dav_parse_statement. 359 * Implicitly converts a cstr to a sstr_t and calls dav_parse_statement.
357 */ 360 */
358 #define dav_parse_cstr_statement(stmt) dav_parse_statement(S(stmt)) 361 #define dav_parse_cstr_statement(stmt) dav_parse_statement(cx_str(stmt))
359 362
360 /** 363 /**
361 * Frees a DavQLStatement. 364 * Frees a DavQLStatement.
362 * @param stmt the statement object to free 365 * @param stmt the statement object to free
363 */ 366 */

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