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netsurfcss.rc
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netsurfcss.rc
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// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[link(name = "netsurfcss",
vers = "0.1")];
#[crate_type = "lib"];
extern mod std;
extern mod wapcaplet;
use core::libc::{c_void, size_t};
use ll::errors::*;
use errors::CssError;
use util::VoidPtrLike;
use conversions::c_enum_to_rust_enum;
pub use self::properties::CssProperty;
pub mod ll;
pub mod conversions;
pub mod test;
pub mod util;
// FIXME: Trait inheritance still busted
//trait DomNode: VoidPtrLike {
//}
fn ll_result_to_rust_result<T>(code: css_error, val: T) -> CssResult<T> {
match code {
e if e == CSS_OK => Ok(val),
_ => Err(c_enum_to_rust_enum(code))
}
}
pub type CssResult<T> = Result<T, CssError>;
pub fn require_ok(code: css_error, what: &str) {
match code {
e if e == CSS_OK => (),
e => fail!(fmt!("CSS parsing failed while %s. code: %?", what, e))
}
}
pub extern fn realloc(ptr: *c_void, len: size_t, _pw: *c_void) -> *c_void {
unsafe { libc::realloc(ptr, len) }
}
pub mod types {
use wapcaplet::LwcString;
use ll::stylesheet::css_fixed;
use ll::hint::css_hint_length;
use conversions::ToLl;
pub enum CssLanguageLevel {
CssLevel1,
CssLevel2,
CssLevel21,
CssLevel3,
CssLevelDefault, // NB: This is not the same as the ll value
// NB: Sentinal variant to prevent the naive transmute conversion from working
CssLevelNotACLikeEnum(uint)
}
// NB: This must have the same binary structure as css_color
pub struct CssColor { b: u8, g: u8, r: u8, a: u8 }
pub struct CssQName {
ns: Option<LwcString>,
name: LwcString
}
pub enum CssUnit {
CssUnitPx(css_fixed),
CssUnitEx(css_fixed),
CssUnitEm(css_fixed),
CssUnitIn(css_fixed),
CssUnitCm(css_fixed),
CssUnitMm(css_fixed),
CssUnitPt(css_fixed),
CssUnitPc(css_fixed),
CssUnitPct(css_fixed),
CssUnitDeg(css_fixed),
CssUnitGrad(css_fixed),
CssUnitRad(css_fixed),
CssUnitMs(css_fixed),
CssUnitS(css_fixed),
CssUnitHz(css_fixed),
CssUnitKHz(css_fixed)
}
pub impl CssUnit {
fn to_ll_css_hint_length(&self) -> css_hint_length {
let (unit, value) = self.to_ll();
css_hint_length {
value: value,
unit: unit
}
}
fn to_css_fixed(&self) -> css_fixed {
match *self {
CssUnitPx(css_fixed) |
CssUnitEx(css_fixed) |
CssUnitEm(css_fixed) |
CssUnitIn(css_fixed) |
CssUnitCm(css_fixed) |
CssUnitMm(css_fixed) |
CssUnitPt(css_fixed) |
CssUnitPc(css_fixed) |
CssUnitPct(css_fixed) |
CssUnitDeg(css_fixed) |
CssUnitGrad(css_fixed) |
CssUnitRad(css_fixed) |
CssUnitMs(css_fixed) |
CssUnitS(css_fixed) |
CssUnitHz(css_fixed) |
CssUnitKHz(css_fixed) => css_fixed
}
}
fn modify(&self, new_value: css_fixed) -> CssUnit {
match *self {
CssUnitPx(_) => CssUnitPx(new_value),
CssUnitEx(_) => CssUnitEx(new_value),
CssUnitEm(_) => CssUnitEm(new_value),
CssUnitIn(_) => CssUnitIn(new_value),
CssUnitCm(_) => CssUnitCm(new_value),
CssUnitMm(_) => CssUnitMm(new_value),
CssUnitPt(_) => CssUnitPt(new_value),
CssUnitPc(_) => CssUnitPc(new_value),
CssUnitPct(_) => CssUnitPct(new_value),
CssUnitDeg(_) => CssUnitDeg(new_value),
CssUnitGrad(_) => CssUnitGrad(new_value),
CssUnitRad(_) => CssUnitRad(new_value),
CssUnitMs(_) => CssUnitMs(new_value),
CssUnitS(_) => CssUnitS(new_value),
CssUnitHz(_) => CssUnitHz(new_value),
CssUnitKHz(_) => CssUnitKHz(new_value),
}
}
}
}
pub mod errors {
pub enum CssError {
CssOk = 0,
CssNoMem = 1,
CssBadParm = 2,
CssInvalid = 3,
CssFileNotFound = 4,
CssNeedData = 5,
CssBadCharset = 6,
CssEof = 7,
CssImportsPending = 8,
CssPropertyNotSet = 9
}
}
pub mod stylesheet {
use core::cast::transmute;
use core::ptr::{null, to_unsafe_ptr, to_mut_unsafe_ptr};
use core::libc::size_t;
use core::libc::types::common::c99::uint64_t;
use wapcaplet::LwcString;
use properties::{CssFontStyle, CssFontVariant, CssFontWeight};
use types::{CssLanguageLevel, CssColor};
use conversions::AsLl;
use ll::stylesheet::*;
use ll_css_stylesheet_create = ll::stylesheet::css_stylesheet_create;
use CssResult;
use require_ok;
use realloc;
use ll::errors::CSS_NEEDDATA;
pub struct CssStylesheetParams {
params_version: CssStylesheetParamsVersion,
level: CssLanguageLevel,
charset: ~str,
url: ~str,
title: ~str,
allow_quirks: bool,
inline_style: bool,
resolve: Option<CssUrlResolutionFn>,
import: Option<CssImportNotificationFn>,
color: Option<CssColorResolutionFn>,
font: Option<CssFontResolutionFn>,
}
pub enum CssStylesheetParamsVersion {
CssStylesheetParamsVersion1 = 1
}
pub type CssUrlResolutionFn = ~fn(base: &str, rel: &LwcString) -> CssResult<LwcString>;
pub type CssImportNotificationFn = ~fn(parent: &CssStylesheet, url: &LwcString) -> CssResult<uint64_t>;
pub type CssColorResolutionFn = ~fn(name: &LwcString) -> CssResult<CssColor>;
pub type CssFontResolutionFn = ~fn(name: &LwcString) -> CssResult<CssSystemFont>;
pub struct CssSystemFont {
style: CssFontStyle,
variant: CssFontVariant,
weight: CssFontWeight,
size: css_size,
line_height: css_size,
family: ~str
}
// Note that this must behave as if it is freezable
pub struct CssStylesheet {
priv sheet: *css_stylesheet,
}
impl Drop for CssStylesheet {
fn finalize(&self) {
assert!(self.sheet.is_not_null());
let code = unsafe { css_stylesheet_destroy(self.sheet) };
require_ok(code, "destroying stylesheet");
}
}
pub fn css_stylesheet_create(params: &CssStylesheetParams) -> CssStylesheet {
let sheet = do params.as_ll |ll_params| {
unsafe {
let mut sheet: *css_stylesheet = null();
let code = ll_css_stylesheet_create(
to_unsafe_ptr(ll_params), realloc, null(), to_mut_unsafe_ptr(&mut sheet));
require_ok(code, "creating stylesheet");
assert!(sheet.is_not_null());
sheet
}
};
CssStylesheet {
sheet: sheet
}
}
pub impl CssStylesheet {
fn size(&self) -> uint {
unsafe {
let mut size = 0;
let code = css_stylesheet_size(self.sheet, to_mut_unsafe_ptr(&mut size));
require_ok(code, "getting stylesheet size");
return size as uint;
}
}
fn append_data(&mut self, data: &[u8]) {
// FIXME: For some reason to_const_ptr isn't accessible
let code = unsafe { css_stylesheet_append_data(self.sheet, transmute(vec::raw::to_ptr(data)), data.len() as size_t) };
match code {
e if e == CSS_NEEDDATA => { /* fine */ },
_ => require_ok(code, "appending styleshet data")
}
}
fn data_done(&mut self) {
let code = unsafe { css_stylesheet_data_done(self.sheet) };
require_ok(code, "finishing parsing");
}
fn ll_sheet(&self) -> *css_stylesheet {
self.sheet
}
}
}
pub mod properties {
use core::libc::types::common::c99::uint32_t;
use core::cast::transmute;
pub enum CssProperty {
CssPropAzimuth = 0x000,
CssPropBackgroundAttachment = 0x001,
CssPropBackgroundColor = 0x002,
CssPropBackgroundImage = 0x003,
CssPropBackgroundPosition = 0x004,
CssPropBackgroundRepeat = 0x005,
CssPropBorderCollapse = 0x006,
CssPropBorderSpacing = 0x007,
CssPropBorderTopColor = 0x008,
CssPropBorderRightColor = 0x009,
CssPropBorderBottomColor = 0x00a,
CssPropBorderLeftColor = 0x00b,
CssPropBorderTopStyle = 0x00c,
CssPropBorderRightStyle = 0x00d,
CssPropBorderBottomStyle = 0x00e,
CssPropBorderLeftStyle = 0x00f,
CssPropBorderTopWidth = 0x010,
CssPropBorderRightWidth = 0x011,
CssPropBorderBottomWidth = 0x012,
CssPropBorderLeftWidth = 0x013,
CssPropBottom = 0x014,
CssPropCaptionSide = 0x015,
CssPropClear = 0x016,
CssPropClip = 0x017,
CssPropColor = 0x018,
CssPropContent = 0x019,
CssPropCounterIncrement = 0x01a,
CssPropCounterReset = 0x01b,
CssPropCueAfter = 0x01c,
CssPropCueBefore = 0x01d,
CssPropCursor = 0x01e,
CssPropDirection = 0x01f,
CssPropDisplay = 0x020,
CssPropElevation = 0x021,
CssPropEmptyCells = 0x022,
CssPropFloat = 0x023,
CssPropFontFamily = 0x024,
CssPropFontSize = 0x025,
CssPropFontStyle = 0x026,
CssPropFontVariant = 0x027,
CssPropFontWeight = 0x028,
CssPropHeight = 0x029,
CssPropLeft = 0x02a,
CssPropLetterSpacing = 0x02b,
CssPropLineHeight = 0x02c,
CssPropListStyleImage = 0x02d,
CssPropListStylePosition = 0x02e,
CssPropListStyleType = 0x02f,
CssPropMarginTop = 0x030,
CssPropMarginRight = 0x031,
CssPropMarginBottom = 0x032,
CssPropMarginLeft = 0x033,
CssPropMaxHeight = 0x034,
CssPropMaxWidth = 0x035,
CssPropMinHeight = 0x036,
CssPropMinWidth = 0x037,
CssPropOrphans,
CssPropOutlineColor = 0x039,
CssPropOutlineStyle = 0x03a,
CssPropOutlineWidth = 0x03b,
CssPropOverflow = 0x03c,
CssPropPaddingTop = 0x03d,
CssPropPaddingRight = 0x03e,
CssPropPaddingBottom = 0x03f,
CssPropPaddingLeft = 0x040,
CssPropPageBreakAfter = 0x041,
CssPropPageBreakBefore = 0x042,
CssPropPageBreakInside = 0x043,
CssPropPauseAfter = 0x044,
CssPropPauseBefore = 0x045,
CssPropPitchRange = 0x046,
CssPropPitch = 0x047,
CssPropPlayDuring = 0x048,
CssPropPosition = 0x049,
CssPropQuotes = 0x04a,
CssPropRichness = 0x04b,
CssPropRight = 0x04c,
CssPropSpeakHeader = 0x04d,
CssPropSpeakNumeral = 0x04e,
CssPropSpeakPunctuation = 0x04f,
CssPropSpeak = 0x050,
CssPropSpeechRate = 0x051,
CssPropStress = 0x052,
CssPropTableLayout = 0x053,
CssPropTextAlign = 0x054,
CssPropTextDecoration = 0x055,
CssPropTextIndent = 0x056,
CssPropTextTransform = 0x057,
CssPropTop = 0x058,
CssPropUnicodeBidi = 0x059,
CssPropVerticalAlign = 0x05a,
CssPropVisibility = 0x05b,
CssPropVoiceFamily = 0x05c,
CssPropVolume = 0x05d,
CssPropWhiteSpace = 0x05e,
CssPropWidows = 0x05f,
CssPropWidth = 0x060,
CssPropWordSpacing = 0x061,
CssPropZIndex = 0x062,
CssPropOpacity = 0x063,
CssPropBreakAfter = 0x064,
CssPropBreakBefore = 0x065,
CssPropBreakInside = 0x066,
CssPropColumnCount = 0x067,
CssPropColumnFill = 0x068,
CssPropColumnGap = 0x069,
CssPropColumnRuleColor = 0x06a,
CssPropColumnRuleStyle = 0x06b,
CssPropColumnRuleWidth = 0x06c,
CssPropColumnSpan = 0x06d,
CssPropClomumnWidth = 0x06e,
}
pub fn property_from_uint(property: uint32_t) -> CssProperty {
unsafe { transmute(property as uint) }
}
pub enum CssFontStyle {
CssFontStyleInherit = 0x0,
CssFontStyleNormal = 0x1,
CssFontStyleItalic = 0x2,
CssFontStyleOblique = 0x3
}
pub enum CssFontFamily {
CssFontFamilyInherit = 0x0,
/* Named fonts exist if pointer is non-NULL */
CssFontFamilySerif = 0x1,
CssFontFamilySansSerif = 0x2,
CssFontFamilyCursive = 0x3,
CssFontFamilyFantasy = 0x4,
CssFontFamilyMonospace = 0x5
}
pub enum CssFontVariant {
CssFontVariantInherit = 0,
CssFontVariantNormal = 1,
CssFontVariantSmallCaps = 2,
}
pub enum CssFontWeight {
CssFontWeightInherit = 0x0,
CssFontWeightNormal = 0x1,
CssFontWeightBold = 0x2,
CssFontWeightBolder = 0x3,
CssFontWeightLighter = 0x4,
CssFontWeight100 = 0x5,
CssFontWeight200 = 0x6,
CssFontWeight300 = 0x7,
CssFontWeight400 = 0x8,
CssFontWeight500 = 0x9,
CssFontWeight600 = 0xa,
CssFontWeight700 = 0xb,
CssFontWeight800 = 0xc,
CssFontWeight900 = 0xd
}
// NB: This is not identical to css_quotes_e
pub enum CssQuotes {
CssQuotesInherit,
CssQuotesString,
CssQuotesNone,
// Sentinal value to give this enum a non-word size, so the
// naive unsafe conversion to ll fails
CssQuotesNotACLikeEnum(uint)
}
}
pub mod hint {
use types::{CssUnit, CssColor};
use properties::{CssProperty,
CssPropFontSize,
CssPropFontFamily,
CssPropQuotes,
CssPropColor,
CssFontFamily};
use conversions::{ToLl, ll_unit_to_hl_unit};
use wapcaplet::LwcString;
use wapcaplet::ll::lwc_string;
use ll::hint::*;
use ll::properties::*;
use ll::errors::*;
use ll::types::css_color;
use core::ptr::null;
use core::libc::types::common::c99::uint8_t;
use core::cast::transmute;
// An interpretation of the delightful css_hint union
pub enum CssHint {
CssHintFontFamily(~[LwcString], CssFontFamily),
CssHintLength(CssUnit),
CssHintDefault,
CssHintUnknown
}
pub impl CssHint {
fn new(property: CssProperty, hint: *css_hint) -> CssHint {
let status = get_css_hint_status(hint) as u32;
match property {
CssPropFontSize => {
let length: &css_hint_length = hint_imm_data_field(hint);
if status == CSS_FONT_SIZE_DIMENSION {
CssHintLength(ll_unit_to_hl_unit(length.unit, length.value))
} else {
CssHintUnknown
}
}
_ => fail!(fmt!("unknown css hint: %?", property))
}
}
fn write_to_ll(&self, property: CssProperty, llhint: *mut css_hint) -> css_error {
match (property, self) {
(CssPropFontFamily, &CssHintDefault) => {
let strings: &mut **lwc_string = hint_data_field(llhint);
*strings = null();
set_css_hint_status(llhint, CSS_FONT_FAMILY_SANS_SERIF as uint8_t);
}
(CssPropQuotes, &CssHintDefault) => {
let strings: &mut **lwc_string = hint_data_field(llhint);
*strings = null();
set_css_hint_status(llhint, CSS_QUOTES_NONE as uint8_t);
}
(CssPropColor, &CssHintDefault) => {
let color: &mut css_color = hint_data_field(llhint);
*color = CssColor { a: 255, r: 0, g: 0, b: 0 }.to_ll();
set_css_hint_status(llhint, CSS_COLOR_COLOR as uint8_t);
}
(CssPropFontSize, &CssHintLength(val)) => {
let length: &mut css_hint_length = hint_data_field(llhint);
*length = val.to_ll_css_hint_length();
set_css_hint_status(llhint, CSS_FONT_SIZE_DIMENSION as uint8_t);
}
(_, &CssHintUnknown) => {
fail!(fmt!("unknown css hint %?", property));
}
(_, _) => {
fail!(fmt!("incorrectly handled property hint: %?, %?", property, self));
}
}
return CSS_OK;
}
}
fn get_css_hint_status(llhint: *css_hint) -> uint8_t {
unsafe {
let llhint_bytes: *mut uint8_t = transmute(llhint);
let status_field: *mut uint8_t = ptr::mut_offset(llhint_bytes, status_field_offset());
*status_field
}
}
fn set_css_hint_status(llhint: *mut css_hint, status: uint8_t) {
// So gnarly. The status field is a uint8_t that comes after a union type.
// We're just going to calculate it's address and write it
unsafe {
let llhint_bytes: *mut uint8_t = transmute(llhint);
let status_field: *mut uint8_t = ptr::mut_offset(llhint_bytes, status_field_offset());
*status_field = status;
}
}
#[cfg(target_arch = "x86_64")]
fn status_field_offset() -> uint { 16 }
#[cfg(target_arch = "x86")]
fn status_field_offset() -> uint { 16 }
priv fn hint_data_field<T>(llhint: *mut css_hint) -> &mut T {
unsafe { transmute(llhint) }
}
priv fn hint_imm_data_field<T>(llhint: *css_hint) -> &T {
unsafe { transmute(llhint) }
}
}
pub mod select {
use core::libc::c_void;
use core::libc::types::common::c99::{uint64_t, uint32_t};
use ll::types::{css_origin, css_qname};
use types::CssQName;
use stylesheet::CssStylesheet;
use properties::CssProperty;
use computed::CssComputedStyle;
use hint::CssHint;
use util::VoidPtrLike;
use ll_css_select_ctx_create = ll::select::css_select_ctx_create;
use ll::select::{css_select_ctx, css_select_ctx_destroy, css_select_ctx_append_sheet, css_select_ctx_count_sheets};
use ll::select::{css_select_results, css_select_style, css_select_handler};
use ll::select::{CSS_SELECT_HANDLER_VERSION_1, css_select_results_destroy};
use require_ok;
use realloc;
use core::ptr::{null, to_mut_unsafe_ptr, to_unsafe_ptr};
use core::cast::transmute;
use ll::errors::{css_error, CSS_OK};
use wapcaplet::ll::lwc_string;
use ll::hint::css_hint;
use wapcaplet::LwcString;
use conversions::{ToLl, write_ll_qname, ll_qname_to_hl_qname};
use wapcaplet::from_lwc_string;
pub enum CssPseudoElement {
CssPseudoElementNone = 0,
CssPseudoElementFirstLine = 1,
CssPseudoElementFirstLetter = 2,
CssPseudoElementBefore = 3,
CssPseudoElementAfter = 4,
CssPseudoElementCount = 5
}
pub struct CssSelectCtx {
priv select_ctx: *css_select_ctx,
// Whenever a sheet is added to the select ctx we will take ownership of it
// to ensure that it stays alive
priv sheets: ~[CssStylesheet],
}
impl Drop for CssSelectCtx {
fn finalize(&self) {
assert!(self.select_ctx.is_not_null());
let code = unsafe { css_select_ctx_destroy(self.select_ctx) };
require_ok(code, "destroying select ctx");
}
}
pub fn css_select_ctx_create() -> CssSelectCtx {
let mut select_ctx: *css_select_ctx = null();
let code = unsafe { ll_css_select_ctx_create(realloc, null(), to_mut_unsafe_ptr(&mut select_ctx)) };
require_ok(code, "creating select context");
assert!(select_ctx.is_not_null());
CssSelectCtx {
select_ctx: select_ctx,
mut sheets: ~[]
}
}
pub impl CssSelectCtx {
fn append_sheet(&mut self, sheet: CssStylesheet, origin: css_origin, media: uint64_t) {
let code = unsafe { css_select_ctx_append_sheet(self.select_ctx, sheet.ll_sheet(), origin, media) };
require_ok(code, "adding sheet to select ctx");
self.sheets.push(sheet);
}
fn count_sheets(&self) -> uint {
let mut count = 0;
let code = unsafe { css_select_ctx_count_sheets(self.select_ctx, to_mut_unsafe_ptr(&mut count)) };
require_ok(code, "counting sheets");
return count as uint;
}
fn select_style<N: VoidPtrLike, H: CssSelectHandler<N>>(&self, node: &N, media: uint64_t,
_inline_style: Option<&CssStylesheet>,
handler: &H) -> CssSelectResults {
do with_untyped_handler(handler) |untyped_handler| {
let raw_handler = build_raw_handler();
let mut results: *css_select_results = null();
let code = unsafe { css_select_style(self.select_ctx,
node.to_void_ptr(),
media,
null(), // FIXME,
to_unsafe_ptr(&raw_handler),
transmute(to_unsafe_ptr(untyped_handler)),
to_mut_unsafe_ptr(&mut results)) };
require_ok(code, "selecting style");
CssSelectResults {
results: results
}
}
}
}
priv fn build_raw_handler() -> css_select_handler {
css_select_handler {
handler_version: CSS_SELECT_HANDLER_VERSION_1,
node_name: raw_handler::node_name,
node_classes: raw_handler::node_classes,
node_id: raw_handler::node_id,
named_ancestor_node: raw_handler::named_ancestor_node,
named_parent_node: raw_handler::named_parent_node,
named_sibling_node: raw_handler::named_sibling_node,
named_generic_sibling_node: raw_handler::named_generic_sibling_node,
parent_node: raw_handler::parent_node,
sibling_node: raw_handler::sibling_node,
node_has_name: raw_handler::node_has_name,
node_has_class: raw_handler::node_has_class,
node_has_id: raw_handler::node_has_id,
node_has_attribute: raw_handler::node_has_attribute,
node_has_attribute_equal: raw_handler::node_has_attribute_equal,
node_has_attribute_dashmatch: raw_handler::node_has_attribute_dashmatch,
node_has_attribute_includes: raw_handler::node_has_attribute_includes,
node_has_attribute_prefix: raw_handler::node_has_attribute_prefix,
node_has_attribute_suffix: raw_handler::node_has_attribute_suffix,
node_has_attribute_substring: raw_handler::node_has_attribute_substring,
node_is_root: raw_handler::node_is_root,
node_count_siblings: raw_handler::node_count_siblings,
node_is_empty: raw_handler::node_is_empty,
node_is_link: raw_handler::node_is_link,
node_is_visited: raw_handler::node_is_visited,
node_is_hover: raw_handler::node_is_hover,
node_is_active: raw_handler::node_is_active,
node_is_focus: raw_handler::node_is_focus,
node_is_enabled: raw_handler::node_is_enabled,
node_is_disabled: raw_handler::node_is_disabled,
node_is_checked: raw_handler::node_is_checked,
node_is_target: raw_handler::node_is_target,
node_is_lang: raw_handler::node_is_lang,
node_presentational_hint: raw_handler::node_presentational_hint,
ua_default_for_property: raw_handler::ua_default_for_property,
compute_font_size: raw_handler::compute_font_size
}
}
priv mod raw_handler {
use core::libc::types::common::c99::{uint32_t, int32_t};
use wapcaplet::ll::lwc_string;
use ll::types::css_qname;
use core::libc::c_void;
use core::cast::transmute;
use ll::errors::{css_error, CSS_OK, CSS_PROPERTY_NOT_SET};
use ll::hint::css_hint;
use types;
use hint;
use properties;
use hint::CssHint;
use super::UntypedHandler;
priv fn unimpl(n: &str) -> ! {
fail!(fmt!("unimplemented css callback handler: %s", n))
}
fn unimpl_warn(what: &str) {
warn!("unimplemented css value: %?", what);
}
priv fn enter(n: &str) {
debug!("entering raw handler: %s", n);
}
priv fn ph<'a>(pw: *c_void) -> &'a UntypedHandler<'a> {
unsafe { transmute(pw) }
}
pub extern fn node_name(pw: *c_void, node: *c_void, qname: *mut css_qname) -> css_error {
enter("node_name");
(ph(pw).node_name)(node, qname)
}
pub extern fn node_classes(pw: *c_void, node: *c_void, classes: *mut **lwc_string, n_classes: *mut uint32_t) -> css_error {
enter("node_classes");
(ph(pw).node_classes)(node, classes, n_classes)
}
pub extern fn node_id(pw: *c_void, node: *c_void, id: *mut *lwc_string) -> css_error {
enter("node_id");
(ph(pw).node_id)(node, id)
}
pub extern fn named_ancestor_node(pw: *c_void,
node: *c_void,
qname: *css_qname,
parent: *mut *c_void) -> css_error {
enter("named_ancestor_node");
(ph(pw).named_ancestor_node)(node, qname, parent)
}
pub extern fn named_parent_node(pw: *c_void, node: *c_void, qname: *css_qname, parent: *mut *c_void) -> css_error {
enter("named_parent_node");
(ph(pw).named_parent_node)(node, qname, parent)
}
pub extern fn named_sibling_node(_pw: *c_void, node: *c_void, _qname: *css_qname, sibling: *mut *c_void) -> css_error {
unimpl_warn("named_sibling_node");
unsafe {
*sibling = node;
CSS_OK
}
}
pub extern fn named_generic_sibling_node(_pw: *c_void, _node: *c_void, _qname: *css_qname, _sibling: **c_void) -> css_error {
unimpl("named_generic_sibling_node")
}
pub extern fn parent_node(pw: *c_void, node: *c_void, parent: *mut *c_void) -> css_error {
enter("parent_node");
(ph(pw).parent_node)(node, parent)
}
pub extern fn sibling_node(_pw: *c_void, node: *c_void, sibling: *mut *c_void) -> css_error {
unimpl_warn("sibling_node");
unsafe {
*sibling = node;
CSS_OK
}
}
pub extern fn node_has_name(_pw: *c_void, _node: *c_void, _qname: *css_qname, _match_: *bool) -> css_error {
unimpl("node_has_name")
}
pub extern fn node_has_class(pw: *c_void, node: *c_void, name: *lwc_string, match_: *mut bool) -> css_error {
enter("node_has_class");
(ph(pw).node_has_class)(node, name, match_)
}
pub extern fn node_has_id(pw: *c_void, node: *c_void, name: *lwc_string, match_: *mut bool) -> css_error {
enter("node_has_id");
(ph(pw).node_has_id)(node, name, match_)
}
pub extern fn node_has_attribute(_pw: *c_void, _node: *c_void, _qname: *css_qname, _match_: *bool) -> css_error {
unimpl("node_has_attribute")
}
pub extern fn node_has_attribute_equal(_pw: *c_void, _node: *c_void, _qname: *css_qname, _value: *lwc_string, _match_: *bool) -> css_error {
unimpl_warn("node_has_attribute_equal");
CSS_OK
}
pub extern fn node_has_attribute_dashmatch(_pw: *c_void, _node: *c_void, _qname: *css_qname, _value: *lwc_string, _match_: *bool) -> css_error {
unimpl("node_has_attribute_dashmatch")
}
pub extern fn node_has_attribute_includes(_pw: *c_void, _node: *c_void, _qname: *css_qname, _value: *lwc_string, _match_: *bool) -> css_error {
unimpl("node_has_attribute_includes")
}
pub extern fn node_has_attribute_prefix(_pw: *c_void, _node: *c_void, _qname: *css_qname, _value: *lwc_string, match_: *mut bool) -> css_error {
unimpl_warn("node_has_attribute_prefix");
unsafe {
*match_ = false;
CSS_OK
}
}
pub extern fn node_has_attribute_suffix(_pw: *c_void, _node: *c_void, _qname: *css_qname, _value: *lwc_string, _match_: *bool) -> css_error {
unimpl("node_has_attribute_suffix")
}
pub extern fn node_has_attribute_substring(_pw: *c_void, _node: *c_void, _qname: *css_qname, _value: *lwc_string, _match_: *bool) -> css_error {
unimpl("node_has_attribute_substring")
}
pub extern fn node_is_root(pw: *c_void, node: *c_void, match_: *mut bool) -> css_error {
enter("node_is_root");
(ph(pw).node_is_root)(node, match_)
}
pub extern fn node_count_siblings(_pw: *c_void, _node: *c_void, _same_name: bool, _after: bool, count: *mut int32_t) -> css_error {
unimpl_warn("node_count_siblings");
unsafe {
*count = 0;
CSS_OK
}
}
pub extern fn node_is_empty(_pw: *c_void, _node: *c_void, match_: *mut bool) -> css_error {
unimpl_warn("node_is_empty");
unsafe {
*match_ = true;
CSS_OK
}
}
pub extern fn node_is_link(pw: *c_void, node: *c_void, match_: *mut bool) -> css_error {
enter("node_is_link");
(ph(pw).node_is_link)(node, match_)
}
pub extern fn node_is_visited(pw: *c_void, node: *c_void, match_: *mut bool) -> css_error {
enter("node_is_visited");
(ph(pw).node_is_visited)(node, match_)
}
pub extern fn node_is_hover(_pw: *c_void, _node: *c_void, _match_: *bool) -> css_error {
unimpl_warn("node_is_hover");
CSS_OK
}
pub extern fn node_is_active(_pw: *c_void, _node: *c_void, match_: *mut bool) -> css_error {
unimpl_warn("node_is_active");
unsafe {
*match_ = false;
CSS_OK
}
}
pub extern fn node_is_focus(_pw: *c_void, _node: *c_void, _match_: *bool) -> css_error {
unimpl_warn("node_is_focus");
CSS_OK
}
pub extern fn node_is_enabled(_pw: *c_void, _node: *c_void, _match_: *bool) -> css_error {
unimpl("node_is_enabled")
}
pub extern fn node_is_disabled(_pw: *c_void, _node: *c_void, _match_: *bool) -> css_error {
unimpl("node_is_disabled")
}
pub extern fn node_is_checked(_pw: *c_void, _node: *c_void, _match_: *bool) -> css_error {
unimpl("node_is_checked")
}
pub extern fn node_is_target(_pw: *c_void, _node: *c_void, _match_: *bool) -> css_error {
unimpl("node_is_target")
}
pub extern fn node_is_lang(_pw: *c_void, _node: *c_void, _lang: *lwc_string, match_: *mut bool) -> css_error {
unimpl_warn("node_is_lang");
unsafe {
*match_ = false;
CSS_OK
}
}
pub extern fn node_presentational_hint(_pw: *c_void, _node: *c_void, _property: uint32_t, _hint: *css_hint) -> css_error {
enter("node_presentational_hint");
CSS_PROPERTY_NOT_SET
}
pub extern fn ua_default_for_property(pw: *c_void, property: uint32_t, hint: *mut css_hint) -> css_error {
enter("ua_default_for_property");
(ph(pw).ua_default_for_property)(property, hint)
}
pub extern fn compute_font_size(_pw: *c_void, parent: *css_hint, size: *mut css_hint) -> css_error {
enter("compute_font_size");
// FIXME: This should be merged with the one in rust-css, I think. --pcwalton
let parent_hint;
if parent.is_null() {
parent_hint = hint::CssHintLength(types::CssUnitPx(16 * 1024));
} else {
parent_hint = CssHint::new(properties::CssPropFontSize, parent);
}
parent_hint.write_to_ll(properties::CssPropFontSize, size);
CSS_OK
}
}
pub struct UntypedHandler<'self> {
node_name: &'self fn(node: *c_void, qname: *mut css_qname) -> css_error,
node_classes: &'self fn(node: *c_void, classes: *mut **lwc_string, n_classes: *mut uint32_t) -> css_error,
node_id: &'self fn(node: *c_void, id: *mut *lwc_string) -> css_error,
named_parent_node: &'self fn(node: *c_void, qname: *css_qname, parent: *mut *c_void) -> css_error,
parent_node: &'self fn(node: *c_void, parent: *mut *c_void) -> css_error,
node_has_class: &'self fn(node: *c_void, name: *lwc_string, match_: *mut bool) -> css_error,
node_has_id: &'self fn(node: *c_void, name: *lwc_string, match_: *mut bool) -> css_error,
named_ancestor_node: &'self fn(node: *c_void,
qname: *css_qname,
parent: *mut *c_void) -> css_error,
node_is_root: &'self fn(node: *c_void, match_: *mut bool) -> css_error,
node_is_link: &'self fn(node: *c_void, match_: *mut bool) -> css_error,
node_is_visited: &'self fn(node: *c_void, match_: *mut bool) -> css_error,
ua_default_for_property: &'self fn(property: uint32_t, hint: *mut css_hint) -> css_error,
}
priv fn with_untyped_handler<N: VoidPtrLike, H: CssSelectHandler<N>, R>(handler: &H, f: &fn(&UntypedHandler) -> R) -> R {
unsafe {
let untyped_handler = UntypedHandler {
node_name: |node: *c_void, qname: *mut css_qname| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let mut hlqname = handler.node_name(&hlnode);
write_ll_qname(&mut hlqname, qname);
CSS_OK
},
node_classes: |node: *c_void, classes: *mut **lwc_string, n_classes: *mut uint32_t| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let (a, b) = match handler.node_classes(&hlnode) {
Some(classes) => {
let class = classes.map(|e| e.raw_reffed());
let len = classes.len();
let size = (len * sys::size_of::<libc::intptr_t>()) as libc::size_t;
let mem = libc::malloc(size);
libc::memcpy(mem, vec::raw::to_ptr(class) as *libc::c_void, size);
(mem as **lwc_string, len as u32)
},
None => (null(), 0)
};
*classes = a;
*n_classes = b;
CSS_OK
},
node_id: |node: *c_void, id: *mut *lwc_string| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
*id = match handler.node_id(&hlnode) {
Some(id) => id.raw_reffed(),
None => null()
};
CSS_OK
},
named_parent_node: |node: *c_void, qname: *css_qname, parent: *mut *c_void| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let hlqname = ll_qname_to_hl_qname(qname);
*parent = match handler.named_parent_node(&hlnode, &hlqname) {
Some(p) => p.to_void_ptr(),
None => null()
};
CSS_OK
},
parent_node: |node: *c_void, parent: *mut *c_void| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let hlparent: Option<N> = handler.parent_node(&hlnode);
*parent = match hlparent {
Some(ref p) => p.to_void_ptr(),
None => null()
};
CSS_OK
},
node_has_class: |node: *c_void, name: *lwc_string, match_: *mut bool| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let hlname = from_lwc_string(name);
*match_ = handler.node_has_class(&hlnode, hlname);
CSS_OK
},
node_has_id: |node: *c_void, name: *lwc_string, match_: *mut bool| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let hlname = from_lwc_string(name);
*match_ = handler.node_has_id(&hlnode, hlname);
CSS_OK
},
named_ancestor_node: |node: *c_void,
qname: *css_qname,
parent: *mut *c_void| -> css_error {
let hlnode: N = VoidPtrLike::from_void_ptr(node);
let hlqname = ll_qname_to_hl_qname(qname);
*parent = match handler.named_ancestor_node(&hlnode, &hlqname) {
Some(p) => p.to_void_ptr(),
None => null()
};
CSS_OK
},
node_is_root: |node: *c_void, match_: *mut bool| -> css_error {
let hlnode = VoidPtrLike::from_void_ptr(node);
*match_ = handler.node_is_root(&hlnode);
CSS_OK
},
node_is_link: |node: *c_void, match_: *mut bool| -> css_error {
let hlnode = VoidPtrLike::from_void_ptr(node);
*match_ = handler.node_is_link(&hlnode);
CSS_OK
},
node_is_visited: |node: *c_void, match_: *mut bool| -> css_error {
let hlnode = VoidPtrLike::from_void_ptr(node);
*match_ = handler.node_is_visited(&hlnode);
CSS_OK
},
ua_default_for_property: |property: uint32_t, hint: *mut css_hint| -> css_error {
use properties::property_from_uint;