CSC/ECE 517 Fall 2015/oss M1501 GSN

Report CSS errors to the devtools, both stored and live

[en.wikipedia.org/wiki/Cascading_Style_Sheets CSS] errors are reported to the Firefox developer tools in this project.

Introduction

Servo<ref>https://en.wikipedia.org/wiki/Servo_(layout_engine)</ref> is an experimental web browser layout engine. It is developed by Mozilla and written in Rust.It provides an API for hosting the engine within other software.

Rust

Rust<ref>https://en.wikipedia.org/wiki/Rust_(programming_language)</ref> is a programming language developed by Mozilla. It is used to design concurrent and safe systems.

Environment Setup<ref>https://github.com/servo/servo</ref>

Pre-requisites

On Debian-based Linuxes:

sudo apt-get install curl freeglut3-dev\
    libfreetype6-dev libgl1-mesa-dri libglib2.0-dev xorg-dev \
    gperf g++ cmake python-virtualenv python-pip \
    libssl-dev libbz2-dev libosmesa6-dev libxmu6 libxmu-dev libglu1-mesa-dev

On Fedora:

sudo dnf install curl freeglut-devel libtool gcc-c++ libXi-devel \
    freetype-devel mesa-libGL-devel glib2-devel libX11-devel libXrandr-devel gperf \
    fontconfig-devel cabextract ttmkfdir python python-virtualenv python-pip expat-devel \
    rpm-build openssl-devel cmake bzip2-devel libXcursor-devel libXmu-devel mesa-libOSMesa

Cloning servo

git clone https://github.com/servo/servo

Building Servo

cd servo
./mach build --dev
./mach run tests/html/about-mozilla.html

Project Description<ref>https://github.com/servo/servo/wiki/CSS-parse-error-reporting</ref>

We will be adding the capability of exposing CSS errors to Servo. We will be using Firefox remote developer tools to inspect and debug the code in Servo.

Program Flow

• Ensure that Servo can compile and run the given tests.
• Choose a website that is compatible with Servo and attach the remote developer tools to it.

Initial steps:

• Build Servo
• Attach remote developer tools
• Making initial changes and build Servo
• Generate css error messages
• Process error messages and retrieve cached messages
• Integrate and build again

Subsequent steps:

• Generate messages which communicate the errors to the script thread.
• Process the messages and provide support for caching them and sending them to the devtools server if it exists.
• Provide the functionality to retrieve the cached css error messages whenever requested.

References

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