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Build a WebAssembly Language for Fun and Profit: Parsing

Blog post from Courier

Post Details
Company
Date Published
Author
Andrew Youngwerth
Word Count
1,750
Company Posts That Month
5
Language
English
Hacker News Points
4
Post removed?
No
Summary

The parser takes a stream of tokens generated by the lexer, organizes them into an abstract syntax tree (AST), and converts it into a logical hierarchy that can be translated into machine code. The AST is represented as a tree-like data structure where each node represents a "node" in the language. The parser defines several types, including IntNode, FloatNode, IdentifierNode, TypedIdentifierNode, and BlockNode, which are used to define the structure of the AST. The parser also defines functions to consume tokens, parse blocks, and parse expressions, which work together to build the AST. The final output is a BlockNode that acts as the root of the tree, representing the compiled code.

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