Annotation of XML/xpathInternals.h, revision 1.4
1.1 veillard 1: /*
2: * xpath.c: internal interfaces for XML Path Language implementation
3: * used to build new modules on top of XPath
4: *
5: * See COPYRIGHT for the status of this software
6: *
7: * Author: Daniel.Veillard@w3.org
8: */
9:
10: #ifndef __XML_XPATH_INTERNALS_H__
11: #define __XML_XPATH_INTERNALS_H__
12:
13: #include <libxml/xpath.h>
14:
15: #ifdef __cplusplus
16: extern "C" {
17: #endif
18:
19: /************************************************************************
20: * *
21: * Helpers *
22: * *
23: ************************************************************************/
24:
25: #define CHECK_ERROR \
26: if (ctxt->error != XPATH_EXPRESSION_OK) return
27:
28: #define CHECK_ERROR0 \
29: if (ctxt->error != XPATH_EXPRESSION_OK) return(0)
30:
31: #define XP_ERROR(X) \
32: { xmlXPatherror(ctxt, __FILE__, __LINE__, X); \
33: ctxt->error = (X); return; }
34:
35: #define XP_ERROR0(X) \
36: { xmlXPatherror(ctxt, __FILE__, __LINE__, X); \
37: ctxt->error = (X); return(0); }
38:
39: #define CHECK_TYPE(typeval) \
40: if ((ctxt->value == NULL) || (ctxt->value->type != typeval)) \
1.3 veillard 41: XP_ERROR(XPATH_INVALID_TYPE)
1.1 veillard 42:
43: #define CHECK_ARITY(x) \
1.3 veillard 44: if (nargs != (x)) \
45: XP_ERROR(XPATH_INVALID_ARITY);
46:
47: #define CAST_TO_STRING \
48: if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING)) \
49: xmlXPathStringFunction(ctxt, 1);
50:
51: #define CAST_TO_NUMBER \
52: if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_NUMBER)) \
53: xmlXPathNumberFunction(ctxt, 1);
54:
55: #define CAST_TO_BOOLEAN \
56: if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_BOOLEAN)) \
57: xmlXPathBooleanFunction(ctxt, 1);
1.1 veillard 58:
59: void xmlXPatherror (xmlXPathParserContextPtr ctxt,
60: const char *file,
61: int line,
62: int no);
63:
64: void xmlXPathDebugDumpObject (FILE *output,
65: xmlXPathObjectPtr cur,
66: int depth);
67:
68: /**
69: * Extending a context
70: */
71: int xmlXPathRegisterFunc (xmlXPathContextPtr ctxt,
72: const xmlChar *name,
73: xmlXPathFunction f);
1.3 veillard 74: int xmlXPathRegisterFuncNS (xmlXPathContextPtr ctxt,
75: const xmlChar *name,
76: const xmlChar *ns_uri,
77: xmlXPathFunction f);
1.1 veillard 78: int xmlXPathRegisterVariable (xmlXPathContextPtr ctxt,
79: const xmlChar *name,
80: xmlXPathObjectPtr value);
1.3 veillard 81: int xmlXPathRegisterVariableNS (xmlXPathContextPtr ctxt,
82: const xmlChar *name,
83: const xmlChar *ns_uri,
84: xmlXPathObjectPtr value);
1.1 veillard 85: xmlXPathFunction xmlXPathFunctionLookup (xmlXPathContextPtr ctxt,
86: const xmlChar *name);
1.3 veillard 87: xmlXPathFunction xmlXPathFunctionLookupNS (xmlXPathContextPtr ctxt,
88: const xmlChar *name,
89: const xmlChar *ns_uri);
1.1 veillard 90: void xmlXPathRegisteredFuncsCleanup(xmlXPathContextPtr ctxt);
91: xmlXPathObjectPtr xmlXPathVariableLookup (xmlXPathContextPtr ctxt,
92: const xmlChar *name);
1.3 veillard 93: xmlXPathObjectPtr xmlXPathVariableLookupNS (xmlXPathContextPtr ctxt,
94: const xmlChar *name,
95: const xmlChar *ns_uri);
1.1 veillard 96: void xmlXPathRegisteredVariablesCleanup(xmlXPathContextPtr ctxt);
97:
98: /**
99: * Utilities to extend XPath
100: */
101: xmlXPathParserContextPtr
102: xmlXPathNewParserContext (const xmlChar *str,
103: xmlXPathContextPtr ctxt);
104: void xmlXPathFreeParserContext (xmlXPathParserContextPtr ctxt);
105:
106: xmlXPathObjectPtr valuePop (xmlXPathParserContextPtr ctxt);
107: int valuePush (xmlXPathParserContextPtr ctxt,
108: xmlXPathObjectPtr value);
109:
110: xmlXPathObjectPtr xmlXPathNewString (const xmlChar *val);
111: xmlXPathObjectPtr xmlXPathNewCString (const char *val);
112: xmlXPathObjectPtr xmlXPathNewFloat (double val);
113: xmlXPathObjectPtr xmlXPathNewBoolean (int val);
114: xmlXPathObjectPtr xmlXPathNewNodeSet (xmlNodePtr val);
115: void xmlXPathNodeSetAdd (xmlNodeSetPtr cur,
116: xmlNodePtr val);
117:
118:
119: void xmlXPathIdFunction (xmlXPathParserContextPtr ctxt,
120: int nargs);
121: void xmlXPathRoot (xmlXPathParserContextPtr ctxt);
122: void xmlXPathEvalExpr (xmlXPathParserContextPtr ctxt);
123: xmlChar * xmlXPathParseName (xmlXPathParserContextPtr ctxt);
124:
125: /*
126: * Debug
127: */
128: #ifdef LIBXML_DEBUG_ENABLED
129: double xmlXPathStringEvalNumber(const xmlChar *str);
130: void xmlXPathDebugDumpObject(FILE *output, xmlXPathObjectPtr cur, int depth);
131: #endif
132: /*
133: * Existing functions
134: */
135:
1.4 ! veillard 136: int xmlXPathEvaluatePredicateResult(xmlXPathParserContextPtr ctxt,
! 137: xmlXPathObjectPtr res);
1.1 veillard 138: void xmlXPathInit(void);
139: void xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
140: void xmlXPathRegisterAllFunctions(xmlXPathContextPtr ctxt);
141: xmlNodeSetPtr xmlXPathNodeSetCreate(xmlNodePtr val);
142: void xmlXPathNodeSetAdd(xmlNodeSetPtr cur, xmlNodePtr val);
143: xmlNodeSetPtr xmlXPathNodeSetMerge(xmlNodeSetPtr val1, xmlNodeSetPtr val2);
144: void xmlXPathNodeSetDel(xmlNodeSetPtr cur, xmlNodePtr val);
145: void xmlXPathNodeSetRemove(xmlNodeSetPtr cur, int val);
146: void xmlXPathFreeNodeSet(xmlNodeSetPtr obj);
147: xmlXPathObjectPtr xmlXPathNewNodeSet(xmlNodePtr val);
148: xmlXPathObjectPtr xmlXPathNewNodeSetList(xmlNodeSetPtr val);
149: xmlXPathObjectPtr xmlXPathWrapNodeSet(xmlNodeSetPtr val);
150: void xmlXPathFreeNodeSetList(xmlXPathObjectPtr obj);
151:
152:
153: xmlXPathObjectPtr xmlXPathNewFloat(double val);
154: xmlXPathObjectPtr xmlXPathNewBoolean(int val);
155: xmlXPathObjectPtr xmlXPathNewString(const xmlChar *val);
156: xmlXPathObjectPtr xmlXPathNewCString(const char *val);
157: void xmlXPathFreeObject(xmlXPathObjectPtr obj);
158: xmlXPathContextPtr xmlXPathNewContext(xmlDocPtr doc);
159: void xmlXPathFreeContext(xmlXPathContextPtr ctxt);
160:
161: int xmlXPathEqualValues(xmlXPathParserContextPtr ctxt);
162: int xmlXPathCompareValues(xmlXPathParserContextPtr ctxt, int inf, int strict);
163: void xmlXPathValueFlipSign(xmlXPathParserContextPtr ctxt);
164: void xmlXPathAddValues(xmlXPathParserContextPtr ctxt);
165: void xmlXPathSubValues(xmlXPathParserContextPtr ctxt);
166: void xmlXPathMultValues(xmlXPathParserContextPtr ctxt);
167: void xmlXPathDivValues(xmlXPathParserContextPtr ctxt);
168: void xmlXPathModValues(xmlXPathParserContextPtr ctxt);
169:
170: /*
171: * The official core of XPath functions
172: */
173: void xmlXPathRoot(xmlXPathParserContextPtr ctxt);
174: void xmlXPathLastFunction(xmlXPathParserContextPtr ctxt, int nargs);
175: void xmlXPathPositionFunction(xmlXPathParserContextPtr ctxt, int nargs);
176: void xmlXPathCountFunction(xmlXPathParserContextPtr ctxt, int nargs);
177: void xmlXPathIdFunction(xmlXPathParserContextPtr ctxt, int nargs);
1.2 veillard 178: void xmlXPathLocalNameFunction(xmlXPathParserContextPtr ctxt, int nargs);
179: void xmlXPathNamespaceURIFunction(xmlXPathParserContextPtr ctxt, int nargs);
1.1 veillard 180: void xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
181: void xmlXPathStringLengthFunction(xmlXPathParserContextPtr ctxt, int nargs);
182: void xmlXPathConcatFunction(xmlXPathParserContextPtr ctxt, int nargs);
183: void xmlXPathContainsFunction(xmlXPathParserContextPtr ctxt, int nargs);
184: void xmlXPathStartsWithFunction(xmlXPathParserContextPtr ctxt, int nargs);
185: void xmlXPathSubstringFunction(xmlXPathParserContextPtr ctxt, int nargs);
186: void xmlXPathSubstringBeforeFunction(xmlXPathParserContextPtr ctxt, int nargs);
187: void xmlXPathSubstringAfterFunction(xmlXPathParserContextPtr ctxt, int nargs);
188: void xmlXPathNormalizeFunction(xmlXPathParserContextPtr ctxt, int nargs);
189: void xmlXPathTranslateFunction(xmlXPathParserContextPtr ctxt, int nargs);
190: void xmlXPathNotFunction(xmlXPathParserContextPtr ctxt, int nargs);
191: void xmlXPathTrueFunction(xmlXPathParserContextPtr ctxt, int nargs);
192: void xmlXPathFalseFunction(xmlXPathParserContextPtr ctxt, int nargs);
193: void xmlXPathLangFunction(xmlXPathParserContextPtr ctxt, int nargs);
194: void xmlXPathNumberFunction(xmlXPathParserContextPtr ctxt, int nargs);
195: void xmlXPathSumFunction(xmlXPathParserContextPtr ctxt, int nargs);
196: void xmlXPathFloorFunction(xmlXPathParserContextPtr ctxt, int nargs);
197: void xmlXPathCeilingFunction(xmlXPathParserContextPtr ctxt, int nargs);
198: void xmlXPathRoundFunction(xmlXPathParserContextPtr ctxt, int nargs);
199: #ifdef __cplusplus
200: }
201: #endif
202: #endif /* ! __XML_XPATH_INTERNALS_H__ */
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