WIP.

4 files changed, 400 insertions, 0 deletions

diff --git a/BUILD b/BUILD
new file mode 100644
index 0000000..2dd5818
--- /dev/null
+++ b/BUILD
@@ -0,0 +1,183 @@
+load(":build_defs.bzl", "lua_cclibrary", "lua_library", "lua_binary")
+
+cc_library(
+    name = "upb",
+    srcs = [
+        "google/protobuf/descriptor.upb.c",
+        "upb/decode.c",
+        "upb/def.c",
+        "upb/encode.c",
+        "upb/handlers.c",
+        "upb/handlers-inl.h",
+        "upb/msg.c",
+        "upb/msgfactory.c",
+        "upb/port_def.inc",
+        "upb/port_undef.inc",
+        "upb/refcounted.c",
+        "upb/sink.c",
+        "upb/structdefs.int.h",
+        "upb/structs.int.h",
+        "upb/table.c",
+        "upb/table.int.h",
+        "upb/upb.c",
+    ],
+    hdrs = [
+        "google/protobuf/descriptor.upb.h",
+        "upb/decode.h",
+        "upb/def.h",
+        "upb/encode.h",
+        "upb/handlers.h",
+        "upb/msg.h",
+        "upb/msgfactory.h",
+        "upb/refcounted.h",
+        "upb/sink.h",
+        "upb/upb.h",
+    ],
+)
+
+cc_library(
+    name = "upb_descriptor",
+    srcs = [
+        "upb/descriptor/descriptor.upbdefs.c",
+        "upb/descriptor/reader.c",
+    ],
+    hdrs = [
+        "upb/descriptor/descriptor.upbdefs.h",
+        "upb/descriptor/reader.h",
+    ],
+    deps = [":upb"],
+)
+
+cc_library(
+    name = "upb_pb",
+    srcs = [
+        "upb/pb/compile_decoder.c",
+        "upb/pb/decoder.c",
+        "upb/pb/decoder.int.h",
+        "upb/pb/encoder.c",
+        "upb/pb/glue.c",
+        "upb/pb/textprinter.c",
+        "upb/pb/varint.c",
+        "upb/pb/varint.int.h",
+    ],
+    hdrs = [
+        "upb/pb/decoder.h",
+        "upb/pb/encoder.h",
+        "upb/pb/glue.h",
+        "upb/pb/textprinter.h",
+    ],
+    deps = [
+        ":upb",
+        ":upb_descriptor",
+    ],
+)
+
+cc_library(
+    name = "upb_json",
+    srcs = [
+        "upb/json/parser.c",
+        "upb/json/printer.c",
+    ],
+    hdrs = [
+        "upb/json/parser.h",
+        "upb/json/printer.h",
+    ],
+    deps = [":upb"],
+)
+
+lua_cclibrary(
+    name = "lua/upb_c",
+    srcs = [
+        "upb/bindings/lua/def.c",
+        "upb/bindings/lua/msg.c",
+        "upb/bindings/lua/upb.c",
+    ],
+    hdrs = [
+        "upb/bindings/lua/upb.h",
+    ],
+    deps = [
+        "upb",
+        "upb_pb",
+    ],
+)
+
+lua_library(
+    name = "lua/upb",
+    base = "upb/bindings/lua",
+    srcs = [
+        "upb/bindings/lua/upb.lua"
+    ],
+    luadeps = [
+        "lua/upb_c",
+    ],
+)
+
+lua_cclibrary(
+    name = "lua/upb/table_c",
+    srcs = [
+        "upb/bindings/lua/upb/table.c",
+    ],
+    luadeps = [
+        "lua/upb_c",
+    ],
+    deps = [
+        "upb",
+    ],
+)
+
+lua_library(
+    name = "lua/upb/table",
+    base = "upb/bindings/lua",
+    srcs = [
+        "upb/bindings/lua/upb/table.lua",
+    ],
+    luadeps = [
+        "lua/upb",
+        "lua/upb/table_c",
+    ],
+)
+
+lua_cclibrary(
+    name = "lua/upb/pb_c",
+    srcs = [
+        "upb/bindings/lua/upb/pb.c",
+    ],
+    luadeps = [
+        "lua/upb_c",
+    ],
+    deps = [
+        "upb_pb",
+    ],
+)
+
+lua_library(
+    name = "lua/upb/pb",
+    base = "upb/bindings/lua",
+    srcs = [
+        "upb/bindings/lua/upb/pb.lua",
+    ],
+    luadeps = [
+        "lua/upb",
+        "lua/upb/pb_c",
+    ],
+)
+
+lua_library(
+    name = "lua/upbc_lib",
+    base = "tools",
+    srcs = [
+        "tools/dump_cinit.lua",
+        "tools/make_c_api.lua",
+    ],
+    luadeps = [
+        "lua/upb",
+    ]
+)
+
+lua_binary(
+    name = "upbc",
+    main = "tools/upbc.lua",
+    luadeps = [
+        "lua/upbc_lib",
+    ]
+)
diff --git a/WORKSPACE b/WORKSPACE
new file mode 100644
index 0000000..b03116f
--- /dev/null
+++ b/WORKSPACE
@@ -0,0 +1,15 @@
+
+workspace(name = "upb")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "lua",
+    build_file = "//:lua.BUILD",
+    sha256 = "b9e2e4aad6789b3b63a056d442f7b39f0ecfca3ae0f1fc0ae4e9614401b69f4b",
+    strip_prefix = "lua-5.2.4",
+    urls = [
+        "https://mirror.bazel.build/www.lua.org/ftp/lua-5.2.4.tar.gz",
+        "https://www.lua.org/ftp/lua-5.2.4.tar.gz",
+    ],
+)
diff --git a/build_defs.bzl b/build_defs.bzl
new file mode 100644
index 0000000..6023bf6
--- /dev/null
+++ b/build_defs.bzl
@@ -0,0 +1,100 @@
+
+shell_find_runfiles = """
+  # --- begin runfiles.bash initialization ---
+  # Copy-pasted from Bazel's Bash runfiles library (tools/bash/runfiles/runfiles.bash).
+  set -euo pipefail
+  if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
+    if [[ -f "$0.runfiles_manifest" ]]; then
+      export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest"
+    elif [[ -f "$0.runfiles/MANIFEST" ]]; then
+      export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST"
+    elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
+      export RUNFILES_DIR="$0.runfiles"
+    fi
+  fi
+  if [[ -f "${RUNFILES_DIR:-/dev/null}/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
+    source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash"
+  elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
+    source "$(grep -m1 "^bazel_tools/tools/bash/runfiles/runfiles.bash " \
+              "$RUNFILES_MANIFEST_FILE" | cut -d ' ' -f 2-)"
+  else
+    echo >&2 "ERROR: cannot find @bazel_tools//tools/bash/runfiles:runfiles.bash"
+    exit 1
+  fi
+  # --- end runfiles.bash initialization ---
+"""
+
+def _librule(name):
+    return name + "_lib"
+
+def lua_cclibrary(name, srcs, hdrs = [], deps = [], luadeps = []):
+    lib_rule = name + "_lib"
+    so_rule = "lib" + name + ".so"
+    so_file = _remove_prefix(name, "lua/") + ".so"
+
+    native.cc_library(
+        name = _librule(name),
+        hdrs = hdrs,
+        srcs = srcs,
+        deps = deps + [_librule(dep) for dep in luadeps] + ["@lua//:liblua_headers"],
+    )
+
+    native.cc_binary(
+        name = so_rule,
+        linkshared = True,
+        deps = [_librule(name)],
+    )
+
+    native.genrule(
+        name = name + "_copy",
+        srcs = [":" + so_rule],
+        outs = [so_file],
+        cmd = "cp $< $@",
+    )
+
+    native.filegroup(
+        name = name,
+        data = [so_file],
+    )
+
+def _remove_prefix(str, prefix):
+    if not str.startswith(prefix):
+        fail("%s doesn't start with %s" % (str, prefix))
+    return str[len(prefix):]
+
+def lua_library(name, srcs, base, luadeps = []):
+    outs = [_remove_prefix(src, base + "/") for src in srcs]
+    native.genrule(
+        name = name + "_copy",
+        srcs = srcs,
+        outs = outs,
+        cmd = "cp $(SRCS) $(@D)",
+    )
+
+    native.filegroup(
+        name = name,
+        data = outs + luadeps,
+    )
+
+def lua_binary(name, main, luadeps=[]):
+    script = name + ".sh"
+
+    script_contents = (shell_find_runfiles + """
+BASE=$(dirname $(rlocation upb/upb_c.so))
+export LUA_CPATH="$BASE/?.so"
+export LUA_PATH="$BASE/?.lua"
+$(rlocation lua/lua) $(rlocation upb/tools/upbc.lua) "$@"
+""").replace("$", "$$")
+    print(native.repository_name())
+
+    native.genrule(
+        name = "gen_" + name,
+        outs = [script],
+        cmd = "(cat <<'HEREDOC'\n%s\nHEREDOC\n) > $@" % script_contents,
+    )
+    native.sh_binary(
+        name = name,
+        srcs = [script],
+        data = ["@lua//:lua", "@bazel_tools//tools/bash/runfiles", main] + luadeps,
+    )
+
diff --git a/lua.BUILD b/lua.BUILD
new file mode 100644
index 0000000..7be0b59
--- /dev/null
+++ b/lua.BUILD
@@ -0,0 +1,102 @@
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+cc_library(
+    name = "liblua_headers",
+    defines = ["LUA_USE_LINUX"],
+    hdrs = [
+        "src/lauxlib.h",
+        "src/lua.h",
+        "src/lua.hpp",
+        "src/luaconf.h",
+        "src/lualib.h",
+    ],
+    includes = ["src"],
+)
+
+cc_library(
+    name = "liblua",
+    srcs = [
+        "src/lapi.c",
+        "src/lapi.h",
+        "src/lauxlib.c",
+        "src/lauxlib.h",
+        "src/lbaselib.c",
+        "src/lbitlib.c",
+        "src/lcode.c",
+        "src/lcode.h",
+        "src/lcorolib.c",
+        "src/lctype.c",
+        "src/lctype.h",
+        "src/ldblib.c",
+        "src/ldebug.c",
+        "src/ldebug.h",
+        "src/ldo.c",
+        "src/ldo.h",
+        "src/ldump.c",
+        "src/lfunc.c",
+        "src/lfunc.h",
+        "src/lgc.c",
+        "src/lgc.h",
+        "src/linit.c",
+        "src/liolib.c",
+        "src/llex.c",
+        "src/llex.h",
+        "src/llimits.h",
+        "src/lmathlib.c",
+        "src/lmem.c",
+        "src/lmem.h",
+        "src/loadlib.c",
+        "src/lobject.c",
+        "src/lobject.h",
+        "src/lopcodes.c",
+        "src/lopcodes.h",
+        "src/loslib.c",
+        "src/lparser.c",
+        "src/lparser.h",
+        "src/lstate.c",
+        "src/lstate.h",
+        "src/lstring.c",
+        "src/lstring.h",
+        "src/lstrlib.c",
+        "src/ltable.c",
+        "src/ltable.h",
+        "src/ltablib.c",
+        "src/ltm.c",
+        "src/ltm.h",
+        "src/lundump.c",
+        "src/lundump.h",
+        "src/lvm.c",
+        "src/lvm.h",
+        "src/lzio.c",
+        "src/lzio.h",
+    ],
+    defines = ["LUA_USE_LINUX"],
+    hdrs = [
+        "src/lauxlib.h",
+        "src/lua.h",
+        "src/lua.hpp",
+        "src/luaconf.h",
+        "src/lualib.h",
+    ],
+    includes = ["src"],
+    linkopts = [
+        "-lm",
+        "-ldl",
+    ],
+)
+
+cc_binary(
+    name = "lua",
+    srcs = [
+        "src/lua.c",
+    ],
+    deps = [
+        ":liblua",
+    ],
+    linkopts = [
+        "-lreadline",
+        "-rdynamic",
+    ],
+)