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