Stylesheet.c

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/*
 * ObjectivelyMVC: Object oriented MVC framework for OpenGL, SDL2 and GNU C.
 * Copyright (C) 2014 Jay Dolan <jay@jaydolan.com>
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source distribution.
 */
 
#include <assert.h>
#include <string.h>
 
#include <Objectively/Hash.h>
 
#include "ObjectivelyMVC.h"
 
#include "stylesheet.css.h"
 
#define _Class _Stylesheet
 
#pragma mark - Object
 
static void dealloc(Object *self) {
 
    Stylesheet *this = (Stylesheet *) self;
 
    release(this->selectors);
    release(this->styles);
 
    super(Object, self, dealloc);
}
 
static int hash(const Object *self) {
 
    Stylesheet *this = (Stylesheet *) self;
 
    int hash = HASH_SEED;
 
    hash = HashForObject(hash, this->selectors);
    hash = HashForObject(hash, this->styles);
 
    return hash;
}
 
static _Bool isEqual(const Object *self, const Object *other) {
 
    if (super(Object, self, isEqual, other)) {
        return true;
    }
 
    if (other && $(other, isKindOfClass, _Stylesheet())) {
 
        const Stylesheet *this = (Stylesheet *) self;
        const Stylesheet *that = (Stylesheet *) other;
 
        if ($((Object *) this->selectors, isEqual, (Object *) that->selectors)) {
            return $((Object *) this->styles, isEqual, (Object *) that->styles);
        }
    }
 
    return false;
}
 
#pragma mark - Stylesheet
 
static Stylesheet *_defaultStylesheet;
 
static Stylesheet *defaultStylesheet(void) {
    static Once once;
 
    do_once(&once, {
        _defaultStylesheet = $$(Stylesheet, stylesheetWithCharacters, (char *) stylesheet_css);
        assert(_defaultStylesheet);
    });
 
    return _defaultStylesheet;
}
 
static ident selectorsReducer(const ident obj, ident accumulator, ident data) {
 
    $((MutableArray *) accumulator, addObjectsFromArray, ((Style *) obj)->selectors);
 
    return accumulator;
}
 
static Order selectorsComparator(const ident a, const ident b) {
    return $((Selector *) a, compareTo, (Selector *) b);
}
 
static Stylesheet *initWithCharacters(Stylesheet *self, const char *chars) {
 
    self = (Stylesheet *) super(Object, self, init);
    if (self) {
 
        self->styles = $$(Style, parse, chars);
        assert(self->styles);
 
        MutableArray *selectors = $$(MutableArray, array);
        assert(selectors);
 
        $(self->styles, reduce, selectorsReducer, selectors, NULL);
 
        self->selectors = $((Array *) selectors, sortedArray, selectorsComparator);
        assert(self->selectors);
 
        release(selectors);
    }
 
    return self;
}
 
static Stylesheet *initWithData(Stylesheet *self, const Data *data) {
 
    assert(data);
 
    String *string = $$(String, stringWithData, data, STRING_ENCODING_UTF8);
    assert(string);
 
    self = $(self, initWithString, string);
 
    release(string);
    return self;
}
 
static Stylesheet *initWithResource(Stylesheet *self, const Resource *resource) {
 
    assert(resource);
 
    return $(self, initWithData, resource->data);
}
 
static Stylesheet *initWithResourceName(Stylesheet *self, const char *name) {
 
    assert(name);
 
    Resource *resource = $$(Resource, resourceWithName, name);
    assert(resource);
 
    self = $(self, initWithResource, resource);
 
    release(resource);
    return self;
}
 
static Stylesheet *initWithString(Stylesheet *self, const String *string) {
 
    assert(string);
 
    return $(self, initWithCharacters, string->chars);
}
 
static Stylesheet *stylesheetWithCharacters(const char *chars) {
    return $(alloc(Stylesheet), initWithCharacters, chars);
}
 
static Stylesheet *stylesheetWithData(const Data *data) {
    return $(alloc(Stylesheet), initWithData, data);
}
 
static Stylesheet *stylesheetWithResource(const Resource *resource) {
    return $(alloc(Stylesheet), initWithResource, resource);
}
 
static Stylesheet *stylesheetWithResourceName(const char *name) {
    return $(alloc(Stylesheet), initWithResourceName, name);
}
 
static Stylesheet *stylesheetWithString(const String *string) {
    return $(alloc(Stylesheet), initWithString, string);
}
 
#pragma mark - Class lifecycle
 
static void initialize(Class *clazz) {
 
    ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
    ((ObjectInterface *) clazz->interface)->hash = hash;
    ((ObjectInterface *) clazz->interface)->isEqual = isEqual;
 
    ((StylesheetInterface *) clazz->interface)->defaultStylesheet = defaultStylesheet;
    ((StylesheetInterface *) clazz->interface)->initWithCharacters = initWithCharacters;
    ((StylesheetInterface *) clazz->interface)->initWithData = initWithData;
    ((StylesheetInterface *) clazz->interface)->initWithResource = initWithResource;
    ((StylesheetInterface *) clazz->interface)->initWithResourceName = initWithResourceName;
    ((StylesheetInterface *) clazz->interface)->initWithString = initWithString;
    ((StylesheetInterface *) clazz->interface)->stylesheetWithCharacters = stylesheetWithCharacters;
    ((StylesheetInterface *) clazz->interface)->stylesheetWithData = stylesheetWithData;
    ((StylesheetInterface *) clazz->interface)->stylesheetWithResource = stylesheetWithResource;
    ((StylesheetInterface *) clazz->interface)->stylesheetWithResourceName = stylesheetWithResourceName;
    ((StylesheetInterface *) clazz->interface)->stylesheetWithString = stylesheetWithString;
}
 
static void destroy(Class *clazz) {
    release(_defaultStylesheet);
}
 
Class *_Stylesheet(void) {
    static Class *clazz;
    static Once once;
 
    do_once(&once, {
        clazz = _initialize(&(const ClassDef) {
            .name = "Stylesheet",
            .superclass = _Object(),
            .instanceSize = sizeof(Stylesheet),
            .interfaceOffset = offsetof(Stylesheet, interface),
            .interfaceSize = sizeof(StylesheetInterface),
            .initialize = initialize,
            .destroy = destroy,
        });
    });
 
    return clazz;
}
 
#undef _Class