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refactor(build): don't use the preprocessor when generating headers

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Using the preprocessor before generating prototypes provides some
"niceties" but the places that rely on these are pretty few.
Vastly simplifying the BUILD SYSTEM is a better trade-off.

Unbalancing { } blocks due to the preprocessor is cringe anyway (think
of the tree-sitter trees!), write these in a different way.

Add some workarounds for plattform specific features.

INCLUDE_GENERATED_DECLARATIONS flag is now technically redundant,
but will be cleaned up in a follow-up PR as it is a big mess.
This commit is contained in:
bfredl
2025-08-01 12:26:52 +02:00
parent b4c092a092
commit 79c8159f41
24 changed files with 74 additions and 143 deletions
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24
src/gen/gen_declarations.lua
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@@ -71,17 +71,13 @@ end
--- @return string[] static
--- @return string[] non_static
--- @return boolean any_static
local function gen_declarations(fname, text)
local function gen_declarations(text)
local non_static = {} --- @type string[]
local static = {} --- @type string[]
local neededfile = fname:match('[^/]+$')
local curfile = nil
local any_static = false
for _, node in ipairs(grammar:match(text)) do
if node[1] == 'preproc' then
curfile = node.content:match('^%a* %d+ "[^"]-/?([^"/]+)"') or curfile
elseif node[1] == 'proto' and curfile == neededfile then
if node[1] == 'proto' then
local node_text = text:sub(node.pos, node.endpos - 1)
local declaration = process_decl(node_text)
@@ -102,31 +98,27 @@ end
local usage = [[
Usage:
gen_declarations.lua definitions.c static.h non-static.h definitions.i
gen_declarations.lua definitions.c static.h non-static.h
Generates declarations for a C file definitions.c, putting declarations for
static functions into static.h and declarations for non-static functions into
non-static.h. File `definitions.i' should contain an already preprocessed
version of definitions.c and it is the only one which is actually parsed,
definitions.c is needed only to determine functions from which file out of all
functions found in definitions.i are needed and to generate an IWYU comment.
non-static.h. Also generate an IWYU comment.
]]
local function main()
local fname = arg[1]
local static_fname = arg[2]
local non_static_fname = arg[3]
local preproc_fname = arg[4]
local static_basename = arg[5]
local static_basename = arg[4]
if fname == '--help' or #arg < 5 then
if fname == '--help' or #arg < 4 then
print(usage)
os.exit()
end
local text = assert(read_file(preproc_fname))
local text = assert(read_file(fname))
local static_decls, non_static_decls, any_static = gen_declarations(fname, text)
local static_decls, non_static_decls, any_static = gen_declarations(text)
local static = {} --- @type string[]
if fname:find('.*/src/nvim/.*%.h$') then