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;;; RUST DSL |
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(in-package :demo) |
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(defvar *cargo-target* #p"/Users/ellis/dev/otom8/demo/target/") |
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(defvar *rs-macros* nil) |
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(defun rs-mod-form (crate &optional mods pub) |
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"Generate a basic mod form (CRATE . [MODS] [PUB])" |
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`(,crate ,mods ,pub)) |
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(defmacro with-rs-env (imports &body body) |
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"Generate an environment for use within a Rust generator macro." |
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`(let ((imports ,(mapcar #'rs-mod-form imports))) |
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(format nil "~A~&~A" imports ',body))) |
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(defun rs-use (crate &optional mods pub) |
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"Generate a single Rust use statement." |
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(concatenate |
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'string |
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(if pub "pub " "") |
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"use " crate "::{" |
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(cond |
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((consp mods) |
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(reduce |
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(lambda (x y) (format nil "~A,~A" x y)) |
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mods)) |
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(t mods)) |
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"};")) |
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(defun rs-mod (mod &optional pub) |
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"Generate a single Rust mod statement." |
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(concatenate |
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'string |
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(if pub "pub " "") |
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"mod " mod ";")) |
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(defun rs-imports (&rest imports) |
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"Generate a string of Rust 'use' statements." |
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(cond |
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((consp imports) |
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(mapcar (lambda (x) (apply #'rs-use (apply #'rs-mod-form x))) imports)) |
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(t imports))) |
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(defmacro rs-extern-c-fn (name args &optional pub unsafe no-mangle &body body) |
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"Generate a Rust extern 'C' fn." |
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`(concatenate |
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'string |
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,(when no-mangle (format nil "#[no_mangle]~&")) |
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,(when pub "pub ") |
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,(when unsafe "unsafe ") |
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"extern \"C\" fn " ,name "(" |
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,(cond |
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((consp args) (reduce (lambda (x y) (format nil "~A,~A" x y)) args)) |
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(t args)) |
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")" "{" ,@body "}")) |
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(defun rs-obj-impl (obj) |
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"Implement Objective for give OBJ." |
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(format nil "impl Objective for ~A {};" obj)) |
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;; (defun rs-macroexpand-1 (form &optional env)) |
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;; (defun rs-macroexpand (env &rest body) |
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;; "Cbindgen is quite the menace and really doesn't like our macros used |
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;; to generate C FFI bindings. To compensate for this, we use a tool |
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;; called cargo-expand by the most excellent dtolnay which expands Rust |
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;; macros. The expansions are assembled into an equivalent Rust source |
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;; file which cbindgen won't get stuck in an infinite compile loop on.") |
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;;; |