Amy Compiler

Extension

Improve string support

Report can be seen by clicking here or by navigating to report/report.pdf

Slides from the presentation can be seen by clicking here or by navigating to slides/CLP-G07-3.5.pdf

Final grade: 20/20

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Run the compiler and execute the output

1. Requirements

   • Node.js v12 or later
   • Wat2Wasm
   
   

2. Clone the repository and move the downloaded wat2wasm to <root of the project>/bin/
   

3. Run the following command in order to install the required packets

   ~/$                 npm install
   

   
   

4. Generate WebAssembly bytecode for amy source files (with sbt) run [LIBFILES ...] [REQUIRED_FILES ...] Main.amy [--charset=CHARSET]
   

   ~/cs320-group07$    sbt
   sbt:epfl-amyc>      run ./library/Std.amy ./examples/Hello.amy
   

   
   

5. Run the compiler output node ./wasmout/Main.js
   

   ~/cs320-group07$        node ./wasmout/Hello.js
   Hello World!
   

Examples

You will find generic examples in the /examples folder and examples more specific to the extension we proposed in the /extension-examples folder. The same process as above applies for running the programs. Programs in extension-examples need the following libraries: ./library/Std.amy ./library/StringImpl.amy. More dependencies can be required, see table below.

Program	Description
Hotel.amy	Small program for hotel room reservation. Requires ./library/List.amy and ./library/Option.amy.
NamePrinter.amy	Asks for user's last name. Formats it by stripping and capitalizing it then outputs it to the console.
HelloChars.amy	Declares two Char, checks for equality and ouputs the result. Then transforms them to string, concatenate them and output the result.
EscapeChars.amy	Declares two escape sequence characters and outputs them. Uncommenting the commented out "invalidEscapeChar" will generate an error in the parsing phase.
StringOps.amy	Demonstration of length, equals, charAt, substring, strip, toLowerCase and indexOf.
StringNewLine.amy	Demonstration of a string that is split into two lines with the new-line character.
IndexOf.amy	Demonstration of indexOf.
UpperCase.amy	Demonstration of toUpperCase.
More examples	Which are also available in the extension-examples folder.

Contributors

Edouard Michelin

Suhas Shankar