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Diffstat (limited to '')
| -rw-r--r-- | src/st/croco/cr-term.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/src/st/croco/cr-term.h b/src/st/croco/cr-term.h new file mode 100644 index 0000000..0f22dda --- /dev/null +++ b/src/st/croco/cr-term.h @@ -0,0 +1,190 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include <stdio.h> +#include <glib.h> +#include "cr-utils.h" +#include "cr-rgb.h" +#include "cr-num.h" +#include "cr-string.h" + +#ifndef __CR_TERM_H__ +#define __CR_TERM_H__ + +G_BEGIN_DECLS + +/** + *@file + *Declaration of the #CRTem class. + */ + +enum CRTermType +{ + TERM_NO_TYPE = 0, + TERM_NUMBER, + TERM_FUNCTION, + TERM_STRING, + TERM_IDENT, + TERM_URI, + TERM_RGB, + TERM_UNICODERANGE, + TERM_HASH +} ; + + +enum UnaryOperator +{ + NO_UNARY_UOP = 0, + PLUS_UOP, + MINUS_UOP, + EMPTY_UNARY_UOP +} ; + +enum Operator +{ + NO_OP = 0, + DIVIDE, + COMMA +} ; + +struct _CRTerm ; +typedef struct _CRTerm CRTerm ; + +/** + *An abstraction of a css2 term as + *defined in the CSS2 spec in appendix D.1: + *term ::= + *[ NUMBER S* | PERCENTAGE S* | LENGTH S* | EMS S* | EXS S* + *| ANGLE S* | TIME S* | FREQ S* | function ] + * | STRING S* | IDENT S* | URI S* | RGB S* + *| UNICODERANGE S* | hexcolor + */ +struct _CRTerm +{ + /** + *The type of the term. + */ + enum CRTermType type ; + + /** + *The unary operator associated to + *the current term. + */ + enum UnaryOperator unary_op ; + + /** + *The operator associated to the current term. + */ + enum Operator the_operator ; + + + /** + *The content of the term. + *Depending of the type of the term, + *this holds either a number, a percentage ... + */ + union + { + CRNum *num ; + CRString * str ; + CRRgb * rgb ; + } content ; + + /** + *If the term is of type UNICODERANGE, + *this field holds the upper bound of the range. + *if the term is of type FUNCTION, this holds + *an instance of CRTerm that represents + * the expression which is the argument of the function. + */ + union + { + CRTerm *func_param ; + } ext_content ; + + /** + *A spare pointer, just in case. + *Can be used by the application. + */ + gpointer app_data ; + + glong ref_count ; + + /** + *A pointer to the next term, + *just in case this term is part of + *an expression. + */ + CRTerm *next ; + + /** + *A pointer to the previous + *term. + */ + CRTerm *prev ; + CRParsingLocation location ; +} ; + +CRTerm * cr_term_parse_expression_from_buf (const guchar *a_buf, + enum CREncoding a_encoding) ; +CRTerm * cr_term_new (void) ; + +enum CRStatus cr_term_set_number (CRTerm *a_this, CRNum *a_num) ; + +enum CRStatus cr_term_set_function (CRTerm *a_this, + CRString *a_func_name, + CRTerm *a_func_param) ; + +enum CRStatus cr_term_set_string (CRTerm *a_this, CRString *a_str) ; + +enum CRStatus cr_term_set_ident (CRTerm *a_this, CRString *a_str) ; + +enum CRStatus cr_term_set_uri (CRTerm *a_this, CRString *a_str) ; + +enum CRStatus cr_term_set_rgb (CRTerm *a_this, CRRgb *a_rgb) ; + +enum CRStatus cr_term_set_hash (CRTerm *a_this, CRString *a_str) ; + +CRTerm * cr_term_append_term (CRTerm *a_this, CRTerm *a_new_term) ; + +CRTerm * cr_term_prepend_term (CRTerm *a_this, CRTerm *a_new_term) ; + +guchar * cr_term_to_string (CRTerm const *a_this) ; + +guchar * cr_term_one_to_string (CRTerm const * a_this) ; + +void cr_term_dump (CRTerm const *a_this, FILE *a_fp) ; + +int cr_term_nr_values (CRTerm const *a_this) ; + +CRTerm * cr_term_get_from_list (CRTerm *a_this, int itemnr) ; + +void cr_term_ref (CRTerm *a_this) ; + +gboolean cr_term_unref (CRTerm *a_this) ; + +void cr_term_destroy (CRTerm * a_term) ; + +G_END_DECLS + +#endif /*__CR_TERM_H__*/ |