Add current saphire build system and auto-completion code
This commit is contained in:
TSnake41
parent
1c94c52802
commit
37ef1b240c
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@ -0,0 +1,203 @@
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--[[
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Saphire-based build system for raylib-lua
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Copyright (C) 2021 Astie Teddy
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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]]
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local saphire = require "saphire"
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local los = require "los"
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local cc = os.getenv "CC" or "cc"
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local ar = os.getenv "AR" or "ar"
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local windres = os.getenv "WINDRES" or "windres"
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-- TODO: Use current lua interpreter
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local lua = "luajit"--os.getenv "LUA" or "luajit\\src\\luajit"
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local lua_ready = os.getenv "LUA" or false
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local cflags = os.getenv "CFLAGS" or "-O2 -s"
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local ldflags = os.getenv "LDFLAGS" or "-O2 -s -lm"
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local windres = os.getenv "WINDRES" or "windres"
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local modules = "raymath rlgl easings gestures physac raygui"
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cflags = cflags .. " -Iluajit/src -Iraygui/src -Iraylib/src"
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ldflags = ldflags .. " luajit/src/libluajit.a raylib/src/libraylib.a luajit/src/libluajit.a"
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local exe_ldflags = ""
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if los.type() == "linux" then
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ldflags = ldflags .. " -ldl -pthread"
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elseif los.type() == "win32" then
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ldflags = ldflags .. " -lopengl32 -lgdi32 -lwinmm -static "
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exe_ldflags = exe_ldflags .. "src/res/icon.res"
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end
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local function build_c(src, obj, name, flags)
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if saphire.targets.clean then
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return {
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command = "rm -f " .. obj,
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name = name
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}
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end
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return {
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command = string.format("%s -c -o %s %s %s %s", cc, obj, src, flags or "", cflags),
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name = name,
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display = obj
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}
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end
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local function build_a(objs, lib, name)
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if saphire.targets.clean then
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return {
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command = "rm -f " .. lib,
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name = name
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}
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end
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return {
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command = string.format("%s rcs %s %s", ar, lib, table.concat(objs, " ")),
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name = name
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}
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end
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local function build_e(files, output, name, flags)
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if saphire.targets.clean then
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return {
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command = "rm -f " .. output,
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name = name
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}
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end
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return {
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command = string.format("%s -o %s %s %s %s %s",
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cc, output, table.concat(files, " "), flags or "", ldflags, exe_ldflags),
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name = name,
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display = string.format("%s -o %s", cc, output)
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}
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end
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local function build_res(src, output, name)
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if saphire.targets.clean then
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return {
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command = "rm -f " .. output,
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name = name
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}
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end
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return {
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command = string.format("%s %s -O coff %s", windres, src, output),
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name = name
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}
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end
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local function lua2c(files, output, name, dname)
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--while not lua_ready do
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-- coroutine.yield()
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--end
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if saphire.targets.clean then
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return {
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command = "rm -f " .. output,
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name = dname
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}
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end
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return {
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command = string.format("%s tools/lua2str.lua %s %s %s", lua, output, name, table.concat(files, " ")),
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name = dname
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}
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end
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saphire.do_multi({
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function () -- LuaJIT
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-- TODO: Improve LuaJIT building
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--saphire.do_subdir("luajit", true, "build/buildLuaJIT.lua")
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if saphire.targets.clean then
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saphire.do_single({
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command = "make -C luajit clean",
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name = "LuaJIT"
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}, true)
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else
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saphire.do_single({
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command = string.format("make -C luajit amalg CC=%s BUILDMODE=static MACOSX_DEPLOYMENT_TARGET=10.13", cc),
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name = "LuaJIT"
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}, true)
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end
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lua_ready = true
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end,
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function () -- Raylib
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saphire.do_subdir("raylib/src", true, "build/buildRaylib.lua")
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end,
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function () -- libraylua.a
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saphire.do_single(lua2c(
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{ "src/raylib.lua", "src/compat.lua", "src/raylua.lua" },
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"src/autogen/boot.c",
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"raylua_boot_lua",
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"libraylua.a"
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), true)
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if saphire.targets.clean then
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saphire.do_single({
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command = "rm -f src/autogen/bind.c",
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name = "libraylua.a"
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}, true)
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else
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saphire.do_single({
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command = string.format("%s tools/genbind.lua src/autogen/bind.c %s", lua, modules),
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name = "libraylua.a"
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}, true)
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end
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saphire.do_single(build_c("src/raylua.c", "src/raylua.o", "libraylua.a"), true)
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saphire.do_single(build_a({ "src/raylua.o" }, "libraylua.a", "libraylua.a"), true)
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end,
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function () -- src/raylua_builder.o
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saphire.do_single(lua2c({ "src/raylua_builder.lua" }, "src/autogen/builder.c", "raylua_builder_lua", "raylua_e"), true)
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saphire.do_single(build_c("src/raylua_builder.c", "src/raylua_builder.o", "raylua_e"), true)
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end,
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function () -- Ressources
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if los.type() == "win32" then
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saphire.do_single(build_res("src/res/icon.rc", "src/res/icon.res", "icon"), true)
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end
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end,
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function ()
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local entries = {
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{ "src/raylua_s.o", "src/raylua_s.c" },
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{ "src/raylua_e.o", "src/raylua_e.c" },
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{ "src/lib/miniz.o", "src/lib/miniz.c" },
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{ "src/raylua_self.o", "src/raylua_self.c" }
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}
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saphire.do_multi(saphire.map(entries, function(entry)
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return build_c(entry[2], entry[1], "raylua")
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end), true)
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end
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}, true)
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saphire.do_multi({
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-- raylua_s
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build_e({ "src/raylua_s.o", "libraylua.a" }, "raylua_s", "raylua_s"),
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-- raylua_e
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build_e({
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"src/raylua_e.o",
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"src/raylua_self.o",
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"src/raylua_builder.o",
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"src/lib/miniz.o",
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"libraylua.a"
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}, "raylua_e", "raylua_e")
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}, true)
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@ -0,0 +1,101 @@
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local saphire = require "saphire"
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local cc = os.getenv "CC" or "cc"
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local ar = os.getenv "AR" or "ar"
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local cflags = os.getenv "CFLAGS" or "-O2 -s"
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local ldflags = os.getenv "LDFLAGS" or "-O2 -s -lm"
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local include_paths = "-I. -Iexternal/glfw/include -Iexternal/glfw/deps/mingw"
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local los = require "los"
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local consts = {
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RAYLIB_VERSION = "3.7.0",
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RAYLIB_API_VERSION = "370",
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}
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local vars = saphire.map({
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{ "RAYLIB_LIBTYPE", "STATIC" },
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{ "RAYLIB_BUILD_MODE", "RELEASE" },
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{ "RAYLIB_LIB_NAME", "raylib" },
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{ "RAYLIB_RES_FILE", "./raylib.dll.rc.data" },
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{ "PLATFORM", "PLATFORM_DESKTOP" },
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{ "GRAPHICS", "GRAPHICS_API_OPENGL_33" },
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{ "USE_EXTERNAL_GLFW", "FALSE" },
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{ "USE_WAYLAND_DISPLAY", "FALSE" }
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}, function (v)
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return { v[1], os.getenv(v[1]) or v[2] }
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end)
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for i,v in ipairs(vars) do
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vars[v[1]] = v[2]
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end
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local function build_c(src, obj, flags)
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return {
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command = string.format("%s -fdiagnostics-color=always -c -o %s %s %s %s %s", cc, obj, src, flags or "", cflags, ldflags),
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name = "raylib",
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display = obj
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}
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end
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local function build_a(objs, lib)
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return {
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command = string.format("%s rcs %s %s", ar, lib, table.concat(objs, " ")),
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name = "raylib",
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lib = lib
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}
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end
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local function build_e(files, output, flags)
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return {
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command = string.format("%s -fdiagnostics-color=always -o %s %s %s %s", cc, output, table.concat(files, " "), flags or "", ldflags),
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name = "raylib",
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display = output
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}
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end
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local function build_res(src, output)
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return {
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command = string.format("%s %s -O coff %s", windres, src, output),
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name = "raylib"
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}
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end
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local objects = {
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-- ["obj.o"] = { src... }
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{ "rcore.o", { "rcore.c", "raylib.h", "rlgl.h", "utils.h", "raymath.h", "camera.h", "rgestures.h" } },
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{ "rglfw.o", { "rglfw.c", flags = os.getenv "GLFW_OSX" or "" } },
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{ "rshapes.o", { "rshapes.c", "raylib.h", "rlgl.h" } },
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{ "rtextures.o", { "rtextures.c", "raylib.h", "rlgl.h", "utils.h" } },
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{ "rtext.o", { "rtext.c", "raylib.h", "utils.h" } },
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{ "utils.o", { "utils.c", "utils.h" } },
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{ "rmodels.o", { "rmodels.c", "raylib.h", "rlgl.h", "raymath.h" } },
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{ "raudio.o", { "raudio.c", "raylib.h" } }
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}
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if saphire.targets.clean then
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saphire.do_multi(
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saphire.map(objects, function (obj_info)
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return {
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command = string.format("rm -f %s", obj_info[1])
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}
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end), true)
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else
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saphire.do_multi(
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saphire.map(objects, function (obj_info)
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return function()
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local obj, src = unpack(obj_info)
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saphire.do_recipe(src, obj, build_c(src[1], obj,
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table.concat({ "-D" .. vars.PLATFORM, "-D" .. vars.GRAPHICS, include_paths, src.flags }, " ")),
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true)
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end
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end), true)
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saphire.do_single(
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build_a(
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saphire.map(objects, function (obj) return obj[1] end),
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"libraylib.a"),
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true)
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end
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@ -0,0 +1,49 @@
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local saphire = require "saphire"
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local c = require "saphire-c"
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local cc = os.getenv "CC" or "cc"
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local ar = os.getenv "AR" or "ar"
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local cflags = os.getenv "CFLAGS" or "-O2 -s"
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local ldflags = os.getenv "LDFLAGS" or "-O2 -s -lm"
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local include_paths = "-I. -Iexternal/glfw/include -Iexternal/glfw/deps/mingw"
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local los = require "los"
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local consts = {
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RAYLIB_VERSION = "3.7.0",
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RAYLIB_API_VERSION = "370",
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}
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local vars = saphire.map({
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{ "RAYLIB_LIBTYPE", "STATIC" },
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{ "RAYLIB_BUILD_MODE", "RELEASE" },
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{ "RAYLIB_LIB_NAME", "raylib" },
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{ "RAYLIB_RES_FILE", "./raylib.dll.rc.data" },
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{ "PLATFORM", "PLATFORM_DESKTOP" },
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{ "GRAPHICS", "GRAPHICS_API_OPENGL_33" },
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{ "USE_EXTERNAL_GLFW", "FALSE" },
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{ "USE_WAYLAND_DISPLAY", "FALSE" }
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}, function (v)
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return { v[1], os.getenv(v[1]) or v[2] }
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end)
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for i,v in ipairs(vars) do
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vars[v[1]] = v[2]
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end
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local src = {
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-- ["obj.o"] = { src... }
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{ "rcore.o", { "rcore.c", "raylib.h", "rlgl.h", "utils.h", "raymath.h", "camera.h", "rgestures.h" } },
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{ "rglfw.o", { "rglfw.c", flags = os.getenv "GLFW_OSX" or "" } },
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{ "rshapes.o", { "rshapes.c", "raylib.h", "rlgl.h" } },
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{ "rtextures.o", { "rtextures.c", "raylib.h", "rlgl.h", "utils.h" } },
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{ "rtext.o", { "rtext.c", "raylib.h", "utils.h" } },
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{ "utils.o", { "utils.c", "utils.h" } },
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{ "rmodels.o", { "rmodels.c", "raylib.h", "rlgl.h", "raymath.h" } },
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{ "raudio.o", { "raudio.c", "raylib.h" } }
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}
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local objs = c.compile(src, table.concat({ "-D" .. vars.PLATFORM, "-D" .. vars.GRAPHICS, include_paths }, " "))
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local libraylib = c.lib("libraylib.a", objs)
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@ -0,0 +1,139 @@
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local json = require "json"
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local content = io.open(arg[1], "r"):read "*a"
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local t = json.decode(content)
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print "---@diagnostic disable"
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print "---raylib-lua binding"
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print "rl = {}"
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local ffi_type_list = {}
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local function luaify(t)
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-- strings
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for _,v in ipairs { "void %*", "char %*" } do
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if string.find(t, v) then
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return 'string|lightuserdata'
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end
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end
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for _,v in ipairs { "char" } do
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if string.find(t, v) then
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return "number|string[]"
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end
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end
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for _,v in ipairs { "int", "long", "float", "double" } do
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if string.find(t, v) then
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return "number"
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end
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end
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local t = t:gsub(" ", "_"):gsub("*", "_ptr"):gsub("__", "_")
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if t:find "_ptr" then
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t = t .. "|lightuserdata"
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end
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return t
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end
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for _,enum in ipairs(t.enums) do
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print("---@alias " .. enum.name)
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for _,v in pairs(enum.values) do
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print(string.format("---| '%s'", v.name))
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end
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if enum.description ~= "" then
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print("---" .. enum.description)
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end
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print ""
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for _,v in pairs(enum.values) do
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if v.description ~= "" then
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print("---" .. v.description)
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end
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print(string.format("rl.%s = %u", v.name, v.value))
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end
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end
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for _,struct in ipairs(t.structs) do
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print(string.format("---@class %s%s", struct.name,
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(struct.description ~= "") and string.format(" @ %s", struct.description) or ""))
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print(string.format("---@alias %s_ptr %s", struct.name, struct.name))
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print(string.format("---@alias %s_ptr_ptr %s", struct.name, struct.name))
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if struct.name == "Texture" then
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print "---@alias Texture2D Texture"
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end
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if struct.name == "RenderTexture" then
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print "---@alias RenderTexture2D RenderTexture"
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end
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ffi_type_list[#ffi_type_list+1] = struct.name
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for _,field in pairs(struct.fields) do
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for n in field.name:gmatch "([^, ]+),?" do
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local arraySize = n:match "%[(.-)%]"
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if arraySize then
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n = n:match("(%S-)%[.-%]")
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field.type = string.format("%s[]", luaify(field.type), arraySize)
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end
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print(string.format('---@field %s %s%s', n, luaify(field.type),
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(field.description ~= "") and string.format(" # %s", field.description) or ""))
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end
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end
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print(string.format('---Constructed using `rl.new("%s", ...)`', struct.name))
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print(string.format("local %s = {}", struct.name))
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end
|
||||
|
||||
for _,func in ipairs(t.functions) do
|
||||
local arraySize
|
||||
|
||||
local args = {}
|
||||
local vla = false
|
||||
|
||||
for i,param in ipairs(func.params or {}) do
|
||||
if param.name ~= "" then
|
||||
arraySize = param.name:match "%[(.-)%]"
|
||||
if arraySize then
|
||||
param.name = param.name:match("(%S-)%[.-%]")
|
||||
param.type = string.format("%s[%d]", param.type, arraySize)
|
||||
end
|
||||
|
||||
arraySize = param.name:match "%[(.-)%]"
|
||||
if arraySize then
|
||||
param.name = param.name:match("(%S-)%[.-%]")
|
||||
param.type = string.format("%s[%d]", luaify(param.type), arraySize)
|
||||
end
|
||||
|
||||
print(string.format('---@param %s %s', param.name, luaify(param.type)))
|
||||
|
||||
args[#args + 1] = param.name
|
||||
else
|
||||
vla = true
|
||||
end
|
||||
end
|
||||
|
||||
if func.returnType and func.returnType ~= "void" then
|
||||
print(string.format('---@return %s', luaify(func.returnType)))
|
||||
end
|
||||
|
||||
if vla then
|
||||
print "---@vararg any"
|
||||
end
|
||||
|
||||
if func.description ~= "" then
|
||||
print("---" .. func.description)
|
||||
end
|
||||
print(string.format("function rl.%s(%s%s) end", func.name, table.concat(args, ","), vla and ", ..." or ""))
|
||||
end
|
||||
|
||||
print "---Create a new variable of ffi type `t`"
|
||||
for i,t in ipairs(ffi_type_list) do
|
||||
print(string.format([[---@overload fun(t: '"%s"', ...): %s]], t, t))
|
||||
end
|
||||
print("function rl.new(...) end")
|
||||
|
|
@ -0,0 +1,388 @@
|
|||
--
|
||||
-- json.lua
|
||||
--
|
||||
-- Copyright (c) 2020 rxi
|
||||
--
|
||||
-- Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
-- this software and associated documentation files (the "Software"), to deal in
|
||||
-- the Software without restriction, including without limitation the rights to
|
||||
-- use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||
-- of the Software, and to permit persons to whom the Software is furnished to do
|
||||
-- so, subject to the following conditions:
|
||||
--
|
||||
-- The above copyright notice and this permission notice shall be included in all
|
||||
-- copies or substantial portions of the Software.
|
||||
--
|
||||
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
-- SOFTWARE.
|
||||
--
|
||||
|
||||
local json = { _version = "0.1.2" }
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
-- Encode
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
local encode
|
||||
|
||||
local escape_char_map = {
|
||||
[ "\\" ] = "\\",
|
||||
[ "\"" ] = "\"",
|
||||
[ "\b" ] = "b",
|
||||
[ "\f" ] = "f",
|
||||
[ "\n" ] = "n",
|
||||
[ "\r" ] = "r",
|
||||
[ "\t" ] = "t",
|
||||
}
|
||||
|
||||
local escape_char_map_inv = { [ "/" ] = "/" }
|
||||
for k, v in pairs(escape_char_map) do
|
||||
escape_char_map_inv[v] = k
|
||||
end
|
||||
|
||||
|
||||
local function escape_char(c)
|
||||
return "\\" .. (escape_char_map[c] or string.format("u%04x", c:byte()))
|
||||
end
|
||||
|
||||
|
||||
local function encode_nil(val)
|
||||
return "null"
|
||||
end
|
||||
|
||||
|
||||
local function encode_table(val, stack)
|
||||
local res = {}
|
||||
stack = stack or {}
|
||||
|
||||
-- Circular reference?
|
||||
if stack[val] then error("circular reference") end
|
||||
|
||||
stack[val] = true
|
||||
|
||||
if rawget(val, 1) ~= nil or next(val) == nil then
|
||||
-- Treat as array -- check keys are valid and it is not sparse
|
||||
local n = 0
|
||||
for k in pairs(val) do
|
||||
if type(k) ~= "number" then
|
||||
error("invalid table: mixed or invalid key types")
|
||||
end
|
||||
n = n + 1
|
||||
end
|
||||
if n ~= #val then
|
||||
error("invalid table: sparse array")
|
||||
end
|
||||
-- Encode
|
||||
for i, v in ipairs(val) do
|
||||
table.insert(res, encode(v, stack))
|
||||
end
|
||||
stack[val] = nil
|
||||
return "[" .. table.concat(res, ",") .. "]"
|
||||
|
||||
else
|
||||
-- Treat as an object
|
||||
for k, v in pairs(val) do
|
||||
if type(k) ~= "string" then
|
||||
error("invalid table: mixed or invalid key types")
|
||||
end
|
||||
table.insert(res, encode(k, stack) .. ":" .. encode(v, stack))
|
||||
end
|
||||
stack[val] = nil
|
||||
return "{" .. table.concat(res, ",") .. "}"
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
local function encode_string(val)
|
||||
return '"' .. val:gsub('[%z\1-\31\\"]', escape_char) .. '"'
|
||||
end
|
||||
|
||||
|
||||
local function encode_number(val)
|
||||
-- Check for NaN, -inf and inf
|
||||
if val ~= val or val <= -math.huge or val >= math.huge then
|
||||
error("unexpected number value '" .. tostring(val) .. "'")
|
||||
end
|
||||
return string.format("%.14g", val)
|
||||
end
|
||||
|
||||
|
||||
local type_func_map = {
|
||||
[ "nil" ] = encode_nil,
|
||||
[ "table" ] = encode_table,
|
||||
[ "string" ] = encode_string,
|
||||
[ "number" ] = encode_number,
|
||||
[ "boolean" ] = tostring,
|
||||
}
|
||||
|
||||
|
||||
encode = function(val, stack)
|
||||
local t = type(val)
|
||||
local f = type_func_map[t]
|
||||
if f then
|
||||
return f(val, stack)
|
||||
end
|
||||
error("unexpected type '" .. t .. "'")
|
||||
end
|
||||
|
||||
|
||||
function json.encode(val)
|
||||
return ( encode(val) )
|
||||
end
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
-- Decode
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
local parse
|
||||
|
||||
local function create_set(...)
|
||||
local res = {}
|
||||
for i = 1, select("#", ...) do
|
||||
res[ select(i, ...) ] = true
|
||||
end
|
||||
return res
|
||||
end
|
||||
|
||||
local space_chars = create_set(" ", "\t", "\r", "\n")
|
||||
local delim_chars = create_set(" ", "\t", "\r", "\n", "]", "}", ",")
|
||||
local escape_chars = create_set("\\", "/", '"', "b", "f", "n", "r", "t", "u")
|
||||
local literals = create_set("true", "false", "null")
|
||||
|
||||
local literal_map = {
|
||||
[ "true" ] = true,
|
||||
[ "false" ] = false,
|
||||
[ "null" ] = nil,
|
||||
}
|
||||
|
||||
|
||||
local function next_char(str, idx, set, negate)
|
||||
for i = idx, #str do
|
||||
if set[str:sub(i, i)] ~= negate then
|
||||
return i
|
||||
end
|
||||
end
|
||||
return #str + 1
|
||||
end
|
||||
|
||||
|
||||
local function decode_error(str, idx, msg)
|
||||
local line_count = 1
|
||||
local col_count = 1
|
||||
for i = 1, idx - 1 do
|
||||
col_count = col_count + 1
|
||||
if str:sub(i, i) == "\n" then
|
||||
line_count = line_count + 1
|
||||
col_count = 1
|
||||
end
|
||||
end
|
||||
error( string.format("%s at line %d col %d", msg, line_count, col_count) )
|
||||
end
|
||||
|
||||
|
||||
local function codepoint_to_utf8(n)
|
||||
-- http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=iws-appendixa
|
||||
local f = math.floor
|
||||
if n <= 0x7f then
|
||||
return string.char(n)
|
||||
elseif n <= 0x7ff then
|
||||
return string.char(f(n / 64) + 192, n % 64 + 128)
|
||||
elseif n <= 0xffff then
|
||||
return string.char(f(n / 4096) + 224, f(n % 4096 / 64) + 128, n % 64 + 128)
|
||||
elseif n <= 0x10ffff then
|
||||
return string.char(f(n / 262144) + 240, f(n % 262144 / 4096) + 128,
|
||||
f(n % 4096 / 64) + 128, n % 64 + 128)
|
||||
end
|
||||
error( string.format("invalid unicode codepoint '%x'", n) )
|
||||
end
|
||||
|
||||
|
||||
local function parse_unicode_escape(s)
|
||||
local n1 = tonumber( s:sub(1, 4), 16 )
|
||||
local n2 = tonumber( s:sub(7, 10), 16 )
|
||||
-- Surrogate pair?
|
||||
if n2 then
|
||||
return codepoint_to_utf8((n1 - 0xd800) * 0x400 + (n2 - 0xdc00) + 0x10000)
|
||||
else
|
||||
return codepoint_to_utf8(n1)
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
local function parse_string(str, i)
|
||||
local res = ""
|
||||
local j = i + 1
|
||||
local k = j
|
||||
|
||||
while j <= #str do
|
||||
local x = str:byte(j)
|
||||
|
||||
if x < 32 then
|
||||
decode_error(str, j, "control character in string")
|
||||
|
||||
elseif x == 92 then -- `\`: Escape
|
||||
res = res .. str:sub(k, j - 1)
|
||||
j = j + 1
|
||||
local c = str:sub(j, j)
|
||||
if c == "u" then
|
||||
local hex = str:match("^[dD][89aAbB]%x%x\\u%x%x%x%x", j + 1)
|
||||
or str:match("^%x%x%x%x", j + 1)
|
||||
or decode_error(str, j - 1, "invalid unicode escape in string")
|
||||
res = res .. parse_unicode_escape(hex)
|
||||
j = j + #hex
|
||||
else
|
||||
if not escape_chars[c] then
|
||||
decode_error(str, j - 1, "invalid escape char '" .. c .. "' in string")
|
||||
end
|
||||
res = res .. escape_char_map_inv[c]
|
||||
end
|
||||
k = j + 1
|
||||
|
||||
elseif x == 34 then -- `"`: End of string
|
||||
res = res .. str:sub(k, j - 1)
|
||||
return res, j + 1
|
||||
end
|
||||
|
||||
j = j + 1
|
||||
end
|
||||
|
||||
decode_error(str, i, "expected closing quote for string")
|
||||
end
|
||||
|
||||
|
||||
local function parse_number(str, i)
|
||||
local x = next_char(str, i, delim_chars)
|
||||
local s = str:sub(i, x - 1)
|
||||
local n = tonumber(s)
|
||||
if not n then
|
||||
decode_error(str, i, "invalid number '" .. s .. "'")
|
||||
end
|
||||
return n, x
|
||||
end
|
||||
|
||||
|
||||
local function parse_literal(str, i)
|
||||
local x = next_char(str, i, delim_chars)
|
||||
local word = str:sub(i, x - 1)
|
||||
if not literals[word] then
|
||||
decode_error(str, i, "invalid literal '" .. word .. "'")
|
||||
end
|
||||
return literal_map[word], x
|
||||
end
|
||||
|
||||
|
||||
local function parse_array(str, i)
|
||||
local res = {}
|
||||
local n = 1
|
||||
i = i + 1
|
||||
while 1 do
|
||||
local x
|
||||
i = next_char(str, i, space_chars, true)
|
||||
-- Empty / end of array?
|
||||
if str:sub(i, i) == "]" then
|
||||
i = i + 1
|
||||
break
|
||||
end
|
||||
-- Read token
|
||||
x, i = parse(str, i)
|
||||
res[n] = x
|
||||
n = n + 1
|
||||
-- Next token
|
||||
i = next_char(str, i, space_chars, true)
|
||||
local chr = str:sub(i, i)
|
||||
i = i + 1
|
||||
if chr == "]" then break end
|
||||
if chr ~= "," then decode_error(str, i, "expected ']' or ','") end
|
||||
end
|
||||
return res, i
|
||||
end
|
||||
|
||||
|
||||
local function parse_object(str, i)
|
||||
local res = {}
|
||||
i = i + 1
|
||||
while 1 do
|
||||
local key, val
|
||||
i = next_char(str, i, space_chars, true)
|
||||
-- Empty / end of object?
|
||||
if str:sub(i, i) == "}" then
|
||||
i = i + 1
|
||||
break
|
||||
end
|
||||
-- Read key
|
||||
if str:sub(i, i) ~= '"' then
|
||||
decode_error(str, i, "expected string for key")
|
||||
end
|
||||
key, i = parse(str, i)
|
||||
-- Read ':' delimiter
|
||||
i = next_char(str, i, space_chars, true)
|
||||
if str:sub(i, i) ~= ":" then
|
||||
decode_error(str, i, "expected ':' after key")
|
||||
end
|
||||
i = next_char(str, i + 1, space_chars, true)
|
||||
-- Read value
|
||||
val, i = parse(str, i)
|
||||
-- Set
|
||||
res[key] = val
|
||||
-- Next token
|
||||
i = next_char(str, i, space_chars, true)
|
||||
local chr = str:sub(i, i)
|
||||
i = i + 1
|
||||
if chr == "}" then break end
|
||||
if chr ~= "," then decode_error(str, i, "expected '}' or ','") end
|
||||
end
|
||||
return res, i
|
||||
end
|
||||
|
||||
|
||||
local char_func_map = {
|
||||
[ '"' ] = parse_string,
|
||||
[ "0" ] = parse_number,
|
||||
[ "1" ] = parse_number,
|
||||
[ "2" ] = parse_number,
|
||||
[ "3" ] = parse_number,
|
||||
[ "4" ] = parse_number,
|
||||
[ "5" ] = parse_number,
|
||||
[ "6" ] = parse_number,
|
||||
[ "7" ] = parse_number,
|
||||
[ "8" ] = parse_number,
|
||||
[ "9" ] = parse_number,
|
||||
[ "-" ] = parse_number,
|
||||
[ "t" ] = parse_literal,
|
||||
[ "f" ] = parse_literal,
|
||||
[ "n" ] = parse_literal,
|
||||
[ "[" ] = parse_array,
|
||||
[ "{" ] = parse_object,
|
||||
}
|
||||
|
||||
|
||||
parse = function(str, idx)
|
||||
local chr = str:sub(idx, idx)
|
||||
local f = char_func_map[chr]
|
||||
if f then
|
||||
return f(str, idx)
|
||||
end
|
||||
decode_error(str, idx, "unexpected character '" .. chr .. "'")
|
||||
end
|
||||
|
||||
|
||||
function json.decode(str)
|
||||
if type(str) ~= "string" then
|
||||
error("expected argument of type string, got " .. type(str))
|
||||
end
|
||||
local res, idx = parse(str, next_char(str, 1, space_chars, true))
|
||||
idx = next_char(str, idx, space_chars, true)
|
||||
if idx <= #str then
|
||||
decode_error(str, idx, "trailing garbage")
|
||||
end
|
||||
return res
|
||||
end
|
||||
|
||||
|
||||
return json
|
||||
File diff suppressed because it is too large
Load Diff
Loading…
Reference in New Issue