Anthony Davis


In this book, we jump into a virtual machine, compiler and opcodes, without needing to read about parsing first. The language is already written, meaning you can dive into the source code of a working language right from the start (a scripting language called langur, written in Go). Discover how to develop some very useful features, such as multi-variable assignment, decoupling assignment, string interpolation, short-circuiting operators, for loops, scoped if expressions, and more. We review how opcodes make these things work in a stack-based virtual machine.
Chapters are as follows.
1: general overview
2: opcodes
3: the VM
4: running langur
5: little things
6: constants
7: retrieving non-constant values
8: operators
9: building things
10: declaration and assignment
11: user-defined functions
12: built-in functions
13: for loops
14: if / given expressions
15: exceptions
137 printed pages
Original publication



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