Pragma, libluacomp

Author: lunaboards-dev

make_release.lua

@@ -10,9 +10,11 @@ os.execute("rm -rf build")
 os.execute("mkdir build")
 for i=1, #luaexec do
 	os.execute("luacomp -xlua"..luaexec[i].." -mluamin -O build/luacomp-"..luaexec[i].." src/init.lua")
-	os.execute("luacomp -xlua"..luaexec[i].." -mnone -O build/luacomp-static-"..luaexec[i].." src/staticinit.lua")
+	--os.execute("luacomp -xlua"..luaexec[i].." -mnone -O build/luacomp-static-"..luaexec[i].." src/staticinit.lua")
 	os.execute("chmod +x build/luacomp-"..luaexec[i])
-	os.execute("chmod +x build/luacomp-static-"..luaexec[i])
+	--os.execute("chmod +x build/luacomp-static-"..luaexec[i])
 end
 
+os.execute("LIBLUACOMP=y luacomp -O build/libluacomp.lua src/libluacomp.lua")
+
 os.execute("cp -v build/luacomp-".._VERSION:sub(5).." luacomp")

src/application.lua

@@ -2,24 +2,7 @@
 -- License, v. 2.0. If a copy of the MPL was not distributed with this
 -- file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
-local function dprint(...)
-	local args = {...}
-	for i=1, #args do
-		args[i] = tostring(args[i])
-	end
-	if (false) then
-		io.stderr:write("DEBUG\t"..table.concat(args,"\t"),"\n")
-	end
-end
-
-local stat = require("posix.sys.stat")
-local dirent = require("posix.dirent")
-
---#include "src/shell_var.lua"
---#include "src/luacomp_vars.lua"
 --#include "src/libluacomp.lua"
---#include "src/directive_provider.lua"
---#include "src/cfg/minifier_providers.lua"
 
 local parser = argparse(arg[0]:match("[^/]+$"), "LuaComp v"..LUACOMP_VERSION.."\nA preprocessor+postprocessor written in Lua.")
 parser:argument("input", "Input file (- for STDIN)")

src/directive_provider.lua

@@ -11,6 +11,7 @@
 --#include "src/directives/loadmod.lua"
 --#include "src/directives/error.lua"
 --#include "src/directives/warning.lua"
+--#include "src/directives/pragma.lua"
 
 setmetatable(directives, {__index=function(t, i)
    for i=1, #directive_paths do

src/directives/include.lua

@@ -2,14 +2,29 @@
 -- License, v. 2.0. If a copy of the MPL was not distributed with this
 -- file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
-function directives.include(env, file)
+function directives.include(env, file, asmod)
 	local sr, err = stat.stat(file)
 	if not sr then return false, err end
 	--[[local f = io.open(file, "r")
 	local fast = mkast(f, file)
 	fast.file = file
 	local code = generate(fast)
 	env.code = env.code .. code .. "\n"]]
-	env.code = env.code .. luacomp.process_file(file, file) .. "\n"
+	if asmod then env.code = env.code .. "local "..asmod.." = (function()\n" end
+	if env.pragmas.include_file_name == "y" then
+		env.code = env.code .. "-- " .. file .. "\n"
+	end
+	local code = luacomp.process_file(file, file) .. "\n"
+	if env.pragmas.prefix_local_file_numbers == "y" then
+		local newcode = ""
+		local i = 1
+		for match in code:gmatch("[^\n]*") do
+			newcode = newcode .. "--[["..i.."]] "..match.."\n"
+			i = i + 1
+		end
+		code = newcode
+	end
+	env.code = env.code .. code
+	if asmod then env.code = env.code .. "end)()\n" end
 	return true
 end

src/directives/pragma.lua

@@ -0,0 +1,11 @@
+-- This Source Code Form is subject to the terms of the Mozilla Public
+-- License, v. 2.0. If a copy of the MPL was not distributed with this
+-- file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+function directives.pragma(env, key, value)
+	if not env.pragmas[key] then
+		return nil, "unknown pragma "..key
+	end
+	env.pragmas[key] = value
+	return true
+end

src/directives/warning.lua

@@ -1,3 +1,7 @@
+-- This Source Code Form is subject to the terms of the Mozilla Public
+-- License, v. 2.0. If a copy of the MPL was not distributed with this
+-- file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
 function directives.warning(env, msg)
 	lc_warning(env.fname, msg)
 	return true

src/generator2.lua

@@ -41,7 +41,16 @@ do
 	end
 
 	function generator.run_gcode(fname, gcode)
-		local env = {code = "", fname=fname}
+		fname = fname or "(unknown)"
+		local env = {
+			code = "",
+			fname = fname,
+			pragmas = {
+				include_file_name = "n",
+				prefix_local_file_numbers = "n",
+				wrap_includes = "n"
+			}
+		}
 		local fenv = {}
 		for k, v in pairs(_G) do
 			fenv[k] = v
@@ -51,7 +60,7 @@ do
 		function fenv.call_directive(dname, ...)
 			if not directives[dname] then lc_error("@[{_GENERATOR.fname}]", "invalid directive "..dname) end
 			local r, er = directives[dname](env, ...)
-			if not r then lc_error("@[{_GENERATOR.fname}]", er) end
+			if not r then lc_error("directive "..dname, er) end
 		end
 
 		function fenv.write_out(code)

src/libluacomp.lua

@@ -3,14 +3,18 @@
 -- License, v. 2.0. If a copy of the MPL was not distributed with this
 -- file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
-local luacomp = {}
-
-if arg and arg[0] == "luacomp" then
-	_G.luacomp = luacomp
+local function dprint(...)
+	local args = {...}
+	for i=1, #args do
+		args[i] = tostring(args[i])
+	end
+	if (false) then
+		io.stderr:write("DEBUG\t"..table.concat(args,"\t"),"\n")
+	end
 end
 
-local directives = {}
-
+local stat = require("posix.sys.stat")
+local dirent = require("posix.dirent")
 local unistd = require("posix.unistd")
 
 local function lc_error(name, msg)
@@ -30,14 +34,26 @@ local function lc_warning(name, msg)
 	end
 end
 
+local luacomp = {}
+local directives = {}
+
+--#include "src/shell_var.lua"
+--#include "src/luacomp_vars.lua"
+--#include "src/directive_provider.lua"
+--#include "src/cfg/minifier_providers.lua"
+
+@[[if not svar.get("LIBLUACOMP") then]]
+_G.luacomp = luacomp
+@[[end]]
+
 function luacomp.error(msg)
-	local inf = debug.getinfo(1)
+	local inf = debug.getinfo(2)
 	local name = (inf and inf.short_src:match("[^/]+$"):gsub("^[=@]", "")) or "luacomp"
 	lc_error(name, msg)
 end
 
 function luacomp.warning(msg)
-	local inf = debug.getinfo(1)
+	local inf = debug.getinfo(2)
 	local name = (inf and inf.short_src:match("[^/]+$"):gsub("^[=@]", "")) or "luacomp"
 	lc_warning(name, msg)
 end
@@ -46,7 +62,9 @@ end
 --#include "src/generator2.lua"
 
 function luacomp.process_file(file, fname, dry)
+	@[[if not svar.get("LIBLUACOMP") then]]
 	io.stderr:write("PROC\t", fname, "\n")
+	@[[end]]
 	if type(file) == "string" then
 		file = io.open(file, "r")
 	end
@@ -64,4 +82,22 @@ function luacomp.process_string(str, name, dry)
 	end
 	--error("TODO: implement generation")
 	return generator.run_gcode(name, gcode)
-end
+end
+
+function luacomp.run_minifier(minifier, code)
+	local min = providers[minifier]
+	if not minifier then
+		lc_error("luacomp", "Postprocessor "..minifier.." not found!")
+		--io.stderr:write("ERROR: Postprocessor `"..args.minifier.."' not found!\n")
+		--os.exit(1)
+	end
+	local rcode, err = min(code)
+	if (not rcode) then
+		lc_error(args.minifier, "Postprocessor error:\n"..err)
+	end
+	return rcode
+end
+
+@[[if svar.get("LIBLUACOMP") then]]
+return luacomp
+@[[end]]

src/luacomp_vars.lua

@@ -10,6 +10,6 @@ end
 
 _sv("LUACOMP_V_MAJ", 2)
 _sv("LUACOMP_V_MIN", 0)
-_sv("LUACOMP_V_PAT", 2)
+_sv("LUACOMP_V_PAT", 3)
 _sv("LUACOMP_VERSION", LUACOMP_V_MAJ.."."..LUACOMP_V_MIN.."."..LUACOMP_V_PAT)
 _sv("LUACOMP_NAME", "LuaComp")

tests/asmod.lua

@@ -0,0 +1,2 @@
+--#include "mod.lua" "foo"
+foo()