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Eli Bendersky

A developer revisits the classic 1988 "Let's Build a Compiler" tutorial by Jack Crenshaw, translating it from Pascal/Motorola 68000 assembly to Python/WebAssembly. The tutorial's enduring appeal lies in its step-by-step recursive-descent parser approach and early focus on code generation, though its syntax-directed translation strategy shows limitations in later parts when dealing with types. The modernized code repository provides an accessible way for today's developers to follow the original tutorial with contemporary technologies.

Revisiting "Let's Build a Compiler"

Insights - what makes this tutorial so special?