SelectorSequence.c File Reference

#include <assert.h>
#include <string.h>
#include <Objectively/MutableArray.h>
#include "SelectorSequence.h"
#include "View.h"

Go to the source code of this file.

Macros
#define	_Class   _SelectorSequence

Functions
Class *	_SelectorSequence (void)
static void	dealloc (Object *self)
static String *	description (const Object *self)
static void	initialize (Class *clazz)
static SelectorSequence *	initWithSequence (SelectorSequence *self, const char *sequence)
static _Bool	matchesView (const SelectorSequence *self, const View *view)
static Array *	parse (const char *rule)
static SequenceCombinator	sequenceCombinator (const char *c)

Macro Definition Documentation

_Class

#define _Class   _SelectorSequence

Definition at line 32 of file SelectorSequence.c.

Function Documentation

_SelectorSequence()

Class * _SelectorSequence

(

void

)

Definition at line 189 of file SelectorSequence.c.

                               {
    static Class *clazz;
    static Once once;
 
    do_once(&once, {
        clazz = _initialize(&(const ClassDef) {
            .name = "SelectorSequence",
            .superclass = _Object(),
            .instanceSize = sizeof(SelectorSequence),
            .interfaceOffset = offsetof(SelectorSequence, interface),
            .interfaceSize = sizeof(SelectorSequenceInterface),
            .initialize = initialize,
        });
    });
 
    return clazz;
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 39 of file SelectorSequence.c.

                                  {
 
    SelectorSequence *this = (SelectorSequence *) self;
 
    free(this->sequence);
    release(this->simpleSelectors);
 
    super(Object, self, dealloc);
}

description()

static String * description ( const Object *  self )

static

See also

Object::description(const Object *)

Definition at line 52 of file SelectorSequence.c.

                                               {
 
    const SelectorSequence *this = (SelectorSequence *) self;
 
    return str(this->sequence);
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 175 of file SelectorSequence.c.

                                     {
 
    ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
    ((ObjectInterface *) clazz->interface)->description = description;
 
    ((SelectorSequenceInterface *) clazz->interface)->initWithSequence = initWithSequence;
    ((SelectorSequenceInterface *) clazz->interface)->matchesView = matchesView;
    ((SelectorSequenceInterface *) clazz->interface)->parse = parse;
}

initWithSequence()

static SelectorSequence * initWithSequence ( SelectorSequence *  self, const char *  sequence  )

static

Definition at line 65 of file SelectorSequence.c.

                                                                                        {
 
    self = (SelectorSequence *) super(Object, self, init);
    if (self) {
 
        self->sequence = strtrim(sequence);
        assert(self->sequence);
 
        assert(strlen(self->sequence));
 
        self->simpleSelectors = $$(SimpleSelector, parse, self->sequence);
        assert(self->simpleSelectors->count);
    }
 
    return self;
}

matchesView()

static _Bool matchesView ( const SelectorSequence *  self, const View *  view  )

static

Definition at line 86 of file SelectorSequence.c.

                                                                         {
 
    for (size_t i = 0; i < self->simpleSelectors->count; i++) {
        const SimpleSelector *simpleSelector = $(self->simpleSelectors, objectAtIndex, i);
        if ($(view, matchesSelector, simpleSelector) == false) {
            return false;
        }
    }
 
    return true;
}

parse()

static Array * parse ( const char *  rule )

static

Definition at line 130 of file SelectorSequence.c.

                                      {
 
    assert(rule);
 
    MutableArray *selectorSequences = $$(MutableArray, arrayWithCapacity, 8);
    assert(selectorSequences);
 
    SequenceCombinator left = SequenceCombinatorNone;
 
    const char *c = rule;
    while (*c) {
        const size_t size = strcspn(c, " \n\t>+~");
        if (size) {
            char *sequence = calloc(1, size + 1);
            assert(sequence);
 
            strncpy(sequence, c, size);
 
            SelectorSequence *selectorSequence = $(alloc(SelectorSequence), initWithSequence, sequence);
            assert(selectorSequence);
 
            selectorSequence->right = sequenceCombinator(c + size);
            assert(selectorSequence->right);
 
            selectorSequence->left = left;
            left = selectorSequence->right;
 
            $(selectorSequences, addObject, selectorSequence);
 
            release(selectorSequence);
            free(sequence);
        }
 
        c += size;
        c += strspn(c, " \n\t>+~");
    }
 
    return (Array *) selectorSequences;
}

sequenceCombinator()

static SequenceCombinator sequenceCombinator ( const char *  c )

static

Returns

The SequenceCombinator for the given character.

Definition at line 101 of file SelectorSequence.c.

                                                            {
 
    SequenceCombinator combinator = SequenceCombinatorNone;
 
    while (isspace(*c)) {
        combinator = SequenceCombinatorDescendent;
        c++;
    }
 
    switch (*c) {
        case '>':
            return SequenceCombinatorChild;
        case '~':
            return SequenceCombinatorSibling;
        case '+':
            return SequenceCombinatorAdjacent;
        case '\0':
            return SequenceCombinatorTerminal;
        default:
            break;
    }
 
    return combinator;
}