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| author | Johannes Hofmann <Johannes.Hofmann@gmx.de> | 2026-10-26 20:05:20 +0100 |
|---|---|---|
| committer | Johannes Hofmann <Johannes.Hofmann@gmx.de> | 2026-10-26 20:05:20 +0100 |
| commit | 375d87a9b0ec1cf2fffd705adb870c86144d2400 (patch) | |
| tree | 1e8e05e7cd58686628d0f4622622456613a42e4d /codegen/expr2rust.mac | |
| parent | 45425dd047b791fe63f13a46a3251c529cfffc94 (diff) | |
Replace the C++ implementation with the Rust port
The Rust port (formerly gipfel-rs) is now the official successor to the
FLTK/GSL C++ code base. This squashes the port into a single commit and
removes the C++ sources (they remain in the git history below).
Layout:
crates/gipfel-core headless core: hills, panorama geometry, projections
(maxima-generated derivatives), pure-Rust LM fit,
gipfel: JPEG comment + EXIF I/O, profiles, stitching
crates/gipfel-cli command-line tools (export, info, stitch, profiles)
crates/gipfel-app Cosmic DE (libcosmic) GUI, binary name `gipfel`
codegen/ maxima scripts + regen.sh for the projection code
tests/ golden files + C++ reference harnesses (historical)
The original README is kept for now; it will be updated to describe the
Rust build. gipfel.dat, AUTHORS, ChangeLog and NEWS are unchanged.
Diffstat (limited to 'codegen/expr2rust.mac')
| -rw-r--r-- | codegen/expr2rust.mac | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/codegen/expr2rust.mac b/codegen/expr2rust.mac new file mode 100644 index 0000000..e4e6be8 --- /dev/null +++ b/codegen/expr2rust.mac @@ -0,0 +1,31 @@ +/* + * Rust code generation for gipfel-rs. + * + * Port of gipfel's expr2c.mac (Copyright 2006-2009 Johannes Hofmann). + * Emits one Rust function per line (grep "^pub fn"); integer literals are + * converted to float literals by fixup.py afterwards. + */ + +load("stringproc")$ + +varsubst(v) := ssubst("_", "%", string(v))$ + +printdecl(vars) := ( + sprint("let mut", varsubst(first(vars)), ": f64 = 0.0;"), + for v in rest(vars) do sprint("let mut", varsubst(v), ": f64 = 0.0;"))$ + +printdef(expr) := sprint(varsubst(first(expr)), "=", varsubst(second(expr)), ";")$ + +block2rust(expr) := + if ?equal(op(expr), block) then ( + printdecl(first(expr)), + for d in reverse(rest(reverse(rest(expr)))) do printdef(d), + sprint("return", varsubst(last(expr)), ";")) + else + sprint("return", varsubst(expr), ";")$ + +expr2rust(funcname, argstr, expr) := ( + sprint("pub fn", funcname, "(", argstr, ") -> f64 {"), + block2rust(subst(pow, "^", optimize(expr))), + sprint("}", " +"))$ |