May 2015
Intermediate to advanced
296 pages
5h 10m
English
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Chapter 2. Steps in Writing a Frontend
In this chapter, we will cover the following recipes:
- Defining a TOY language
- Implementing a lexer
- Defining Abstract Syntax Tree
- Implementing a parser
- Parsing simple expressions
- Parsing binary expressions
- Invoking a driver for parsing
- Running lexer and parser on our TOY language
- Defining IR code generation methods for each AST class
- Generating IR code for expressions
- Generating IR code for functions
- Adding IR optimization support
Introduction
In this chapter, you will get to know about how to write a frontend for a language. By making use of a custom-defined TOY language, you will have recipes on how to write a lexer and a parser, and how to generate IR code from the Abstract Syntax Tree (AST) generated by the frontend. ...
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