CSC/ECE 517 Fall 2015/oss M1501 GSN

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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

<references/>

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