/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

//! This module contains conversion helpers between Servo and Gecko types
//! Ideally, it would be in geckolib itself, but coherence
//! forces us to keep the traits and implementations here
//!
//! FIXME(emilio): This file should generally just die.

#![allow(unsafe_code)]

use crate::gecko_bindings::structs::{nsresult, Matrix4x4Components};
use crate::stylesheets::RulesMutateError;
use crate::values::computed::transform::Matrix3D;

impl From<RulesMutateError> for nsresult {
    fn from(other: RulesMutateError) -> Self {
        match other {
            RulesMutateError::Syntax => nsresult::NS_ERROR_DOM_SYNTAX_ERR,
            RulesMutateError::IndexSize => nsresult::NS_ERROR_DOM_INDEX_SIZE_ERR,
            RulesMutateError::HierarchyRequest => nsresult::NS_ERROR_DOM_HIERARCHY_REQUEST_ERR,
            RulesMutateError::InvalidState => nsresult::NS_ERROR_DOM_INVALID_STATE_ERR,
        }
    }
}

impl<'a> From<&'a Matrix4x4Components> for Matrix3D {
    fn from(m: &'a Matrix4x4Components) -> Matrix3D {
        Matrix3D {
            m11: m[0],
            m12: m[1],
            m13: m[2],
            m14: m[3],
            m21: m[4],
            m22: m[5],
            m23: m[6],
            m24: m[7],
            m31: m[8],
            m32: m[9],
            m33: m[10],
            m34: m[11],
            m41: m[12],
            m42: m[13],
            m43: m[14],
            m44: m[15],
        }
    }
}

impl From<Matrix3D> for Matrix4x4Components {
    fn from(matrix: Matrix3D) -> Self {
        [
            matrix.m11, matrix.m12, matrix.m13, matrix.m14, matrix.m21, matrix.m22, matrix.m23,
            matrix.m24, matrix.m31, matrix.m32, matrix.m33, matrix.m34, matrix.m41, matrix.m42,
            matrix.m43, matrix.m44,
        ]
    }
}