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Compiler and codegen

What the front doors run: the rustc invocation, the compiler's diagnostics read as data, and the ccall expressions generated from the FFI manifest.

Compiler (src/compiler.jl)

Modules = [RustCall]
Pages = [joinpath("src", "compiler.jl")]

rustc diagnostics (src/rustc_json.jl)

rustc --error-format=json output, read as data. This is what lets @irust ask the compiler for a snippet's type instead of guessing it from the source (#348).

Modules = [RustCall]
Pages = [joinpath("src", "rustc_json.jl")]

Code generation (src/codegen.jl)

Modules = [RustCall]
Pages = [joinpath("src", "codegen.jl")]

Names the generated code uses (src/emitted_names.jl)

A generated module binds the crate's items under their own names, so the code it emits reaches Base, Core, RustCall and PythonCall only through names no Rust identifier can spell: a GlobalRef in @rust_crate and the PyO3 host, a rustcall′Base / rustcall′RustCall alias in a file written by write_bindings_to_file (#528).

Modules = [RustCall]
Pages = [joinpath("src", "emitted_names.jl")]