1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/* Fo
* fo-expr-eval.h: XSL expression language evaluation module
*
* Copyright (C) 1998-2002 Daniel Veillard.
* Copyright (C) 2001-2002 Sun Microsystems.
* All Rights Reserved.
*
* Based on an XSL expression language evaluator that was based on the
* 'XML Path Language implementation' in 'xpath.c' from libxml2 by
* Daniel Veillard.
* Copyright (C) 2007 Menteith Consulting Ltd
*
* !See COPYING for the status of this software.
*/
#ifndef __FO_EXPR_EVAL_H__
#define __FO_EXPR_EVAL_H__
#include <libfo/fo-utils.h>
#include <libfo/property/fo-property.h>
#include <libfo/fo-context.h>
#include <libfo/datatype/fo-datatype.h>
G_BEGIN_DECLS
typedef struct _FoExprEnv FoExprEnv;
typedef GSList FoExprEnvList;
typedef struct _FoExprContext FoExprContext;
typedef FoDatatype* (* FoExprFunc) (FoExprContext *context,
gint nargs);
#define FO_EXPR_ERROR fo_expr_error_quark ()
GQuark fo_expr_error_quark (void);
typedef enum
{
FO_EXPR_ERROR_FAILED,
FO_EXPR_ERROR_NULL_RESULT,
FO_EXPR_ERROR_ERROR_RESULT,
FO_EXPR_ERROR_EXTRA_STACK,
FO_EXPR_ERROR_EXTRA_EXPR
} FoExprError;
#define FO_EXPR_EVAL_ERROR fo_expr_eval_error_quark ()
GQuark fo_expr_eval_error_quark (void);
typedef enum
{
FO_EXPR_EVAL_ERROR_FAILED, /* Expression evaluation failed */
FO_EXPR_EVAL_ERROR_UNFINISHED_LITERAL,
FO_EXPR_EVAL_ERROR_START_LITERAL,
FO_EXPR_EVAL_ERROR_EXPR_ERROR,
FO_EXPR_EVAL_ERROR_UNKNOWN_FUNC,
FO_EXPR_EVAL_ERROR_INVALID_ARITY,
FO_EXPR_EVAL_ERROR_INVALID_TYPE,
FO_EXPR_EVAL_ERROR_NOT_INHERITED,
FO_EXPR_EVAL_ERROR_INVALID_PROPERTY,
FO_EXPR_EVAL_ERROR_FUNCTION_INVALID_PROPERTY,
FO_EXPR_EVAL_ERROR_NOT_TABLE_CELL_OR_DESCENDANT,
FO_EXPR_EVAL_ERROR_NO_TABLE_CELL_COLUMN,
FO_EXPR_EVAL_ERROR_NOT_LIST_BLOCK_OR_DESCENDANT,
FO_EXPR_EVAL_ERROR_NOT_TABLE_COLUMN,
FO_EXPR_EVAL_ERROR_NOT_COLUMN_WIDTH,
FO_EXPR_EVAL_ERROR_NOT_FIXED_METHOD,
FO_EXPR_EVAL_ERROR_COLOR_DECL,
FO_EXPR_EVAL_ERROR_UNKNOWN_OPERATOR,
FO_EXPR_EVAL_ERROR_FUNC_RETURN_NULL,
FO_EXPR_EVAL_ERROR_CANNOT_INHERIT,
FO_EXPR_EVAL_ERROR_NO_RESOLVE_PERCENT_FUNC,
FO_EXPR_EVAL_ERROR_UNFINISHED_URL,
FO_EXPR_EVAL_ERROR_LAST
} FoExprEvalError;
extern const gchar *fo_expr_eval_error_messages[FO_EXPR_EVAL_ERROR_LAST];
FoDatatype* fo_expr_eval (const gchar *string,
const gchar *property_name,
FoResolveEnumFunc resolve_enum_func,
FoResolvePercentFunc resolve_percent_func,
const FoProperty *font_size_prop,
const FoFo *current_fo,
const FoContext *fo_context,
const FoExprEnvList *env_list,
GError **error);
FoDatatype* fo_expr_padding_eval (const gchar *string,
const gchar *property_name,
FoResolveEnumFunc resolve_enum_func,
FoResolvePercentFunc resolve_percent_func,
const FoProperty *font_size_prop,
const FoFo *current_fo,
const FoContext *fo_context,
const FoExprEnvList *env_list,
GError **error);
FoDatatype* fo_expr_border_color_eval (const gchar *string,
const gchar *property_name,
FoResolveEnumFunc resolve_enum_func,
FoResolvePercentFunc resolve_percent_func,
const FoProperty *font_size_prop,
const FoFo *current_fo,
const FoContext *fo_context,
const FoExprEnvList *env_list,
GError **error);
FoDatatype * fo_expr_border_style_eval (const gchar *string,
const gchar *property_name,
FoResolveEnumFunc resolve_enum_func,
FoResolvePercentFunc resolve_percent_func,
const FoProperty *font_size_prop,
const FoFo *current_fo,
const FoContext *fo_context,
const FoExprEnvList *env_list,
GError **error);
FoDatatype * fo_expr_wsc_eval (const gchar *string,
const gchar *property_name,
FoResolveEnumFunc resolve_enum_func,
FoResolvePercentFunc resolve_percent_func,
const FoProperty *font_size_prop,
const FoFo *current_fo,
const FoContext *fo_context,
const FoExprEnvList *env_list,
GError **error);
FoDatatype * fo_expr_eval_new_error (FoExprContext *context,
FoExprEvalError error_type);
FoDatatype * fo_expr_eval_propagate_error (FoExprContext *context,
GError *error);
void fo_expr_context_push_stack (FoExprContext *context,
FoDatatype *datatype);
FoDatatype * fo_expr_context_pop_stack (FoExprContext *context);
FoDatatype * fo_expr_context_peek_stack (FoExprContext *context);
gboolean fo_expr_context_stack_is_empty (FoExprContext *context);
FoExprFunc fo_expr_context_get_func (FoExprContext *context,
const gchar *name);
void fo_expr_context_debug_dump_stack (FoExprContext *context);
FoExprEnv * fo_expr_env_new (void);
FoExprEnv * fo_expr_env_register_func (FoExprEnv *env,
const gchar *name,
FoExprFunc func);
FoExprFunc fo_expr_env_get_func (FoExprEnv *env,
const gchar *name);
FoExprEnvList * fo_expr_env_list_new (void);
void fo_expr_env_list_free (FoExprEnvList *env_list);
FoExprEnvList * fo_expr_env_list_prepend (FoExprEnvList *env_list,
FoExprEnv *env);
FoExprFunc fo_expr_env_list_get_func (const FoExprEnvList *env_list,
const gchar *name);
G_END_DECLS
#endif /* !__FO_EXPR_EVAL_H__ */
|
