The MicroPython Core Runtime¶

This section decribes the core interpreter implementation.

The Grammar¶

A reference of py/grammar.h.

The Lexer¶

A reference of py/lexer.c, py/lexer.h.

The Parser¶

A reference of py/parse.c, py/parse.h.

The Compiler¶

The subsection details the compiler implementation, any intermediate representations and optimizations done. It also includes how bytecode and native code is emitted, memory management (GC) and type checking.

A reference of py/compile.c, py/compile.h.

Emitting Bytecode¶

Emitting Native Code¶

Type Checking¶

Memory Management¶

Optimizations¶

String Interning¶

Open Addressing¶

Linear Probing¶

Support for C Modules¶

Writing Tests¶

Adding a Core Module¶

The Public API¶

A reference of runtime.h and obj.h.

The Dynamically Loaded Modules¶

A reference of dynruntime.h.

What really Happens when you run a MicroPython Program¶

For example, what all happens where in the code when you do something like “import foo; foo.bar()”. Suggested by @tve