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Record tag error message includes record name instead of only "userdata" #595

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merged 4 commits into from
Apr 7, 2024
Merged

Record tag error message includes record name instead of only "userdata" #595

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1784edb
record tag err msg includes record name
Vipul-Cariappa Apr 5, 2024
f06f29c
updated the failing test
Vipul-Cariappa Apr 7, 2024
e2ff586
implement code review suggestions
Vipul-Cariappa Apr 7, 2024
e23303f
removed `pallene_tag_name` and updated `pallene_type_tag` to work lik…
Vipul-Cariappa Apr 7, 2024
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4 changes: 1 addition & 3 deletions spec/execution_tests.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -1390,11 +1390,9 @@ function execution_tests.run(compile_file, backend, _ENV, only_compile)
end)

it("check record tags", function()
-- TODO: change this message to mention the relevant record types
-- instead of only saying "userdata"
run_test([[
local prim = test.make_prim(123)
assert_pallene_error("expected userdata but found userdata", test.get_x, prim)
assert_pallene_error("expected Foo but found Prim", test.get_x, prim)
]])
end)

Expand Down
30 changes: 16 additions & 14 deletions src/pallene/coder.lua
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Expand Up @@ -173,15 +173,15 @@ end

local function pallene_type_tag(typ)
local tag = typ._tag
if tag == "types.T.Nil" then return "LUA_TNIL"
elseif tag == "types.T.Boolean" then return "LUA_TBOOLEAN"
elseif tag == "types.T.Integer" then return "LUA_VNUMINT"
elseif tag == "types.T.Float" then return "LUA_VNUMFLT"
elseif tag == "types.T.String" then return "LUA_TSTRING"
elseif tag == "types.T.Function" then return "LUA_TFUNCTION"
elseif tag == "types.T.Array" then return "LUA_TTABLE"
elseif tag == "types.T.Table" then return "LUA_TTABLE"
elseif tag == "types.T.Record" then return "LUA_TUSERDATA"
if tag == "types.T.Nil" then return "nil"
elseif tag == "types.T.Boolean" then return "boolean"
elseif tag == "types.T.Integer" then return "integer"
elseif tag == "types.T.Float" then return "float"
elseif tag == "types.T.String" then return "string"
elseif tag == "types.T.Function" then return "function"
elseif tag == "types.T.Array" then return "table"
elseif tag == "types.T.Table" then return "table"
elseif tag == "types.T.Record" then return typ.name
elseif tag == "types.T.Any" then assert(false) -- 'Any' is not a type tag
else tagged_union.error(tag)
end
Expand Down Expand Up @@ -248,14 +248,14 @@ function Coder:get_stack_slot(typ, dst, slot, loc, description_fmt, ...)
check_tag = util.render([[
if (l_unlikely(!$test)) {
pallene_runtime_tag_check_error(L,
$file, $line, $expected_tag, rawtt($slot),
$file, $line, $expected_type, $slot,
${description_fmt}${opt_comma}${extra_args});
}
]], {
test = self:test_tag(typ, slot),
file = C.string(loc and loc.file_name or "<anonymous>"),
line = C.integer(loc and loc.line or 0),
expected_tag = pallene_type_tag(typ),
expected_type = C.string(pallene_type_tag(typ)),
slot = slot,
description_fmt = C.string(description_fmt),
opt_comma = (#extra_args == 0 and "" or ", "),
Expand Down Expand Up @@ -1771,11 +1771,13 @@ function Coder:generate_luaopen_function()
if tag == "coder.Constant.Metatable" then
is_upvalue_box = upv.typ.is_upvalue_box
if not is_upvalue_box then
table.insert(init_constants, [[
lua_newtable(L);
table.insert(init_constants, util.render([[
luaL_newmetatable(L, $type_name);
lua_pushstring(L, "__metatable");
lua_pushboolean(L, 0);
lua_settable(L, -3); ]])
lua_settable(L, -3); ]], {
type_name = C.string(upv.typ.name)
}))
end
elseif tag == "coder.Constant.String" then
table.insert(init_constants, util.render([[
Expand Down
22 changes: 11 additions & 11 deletions src/pallene/pallenelib.lua
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Expand Up @@ -47,7 +47,7 @@ return [==[
#define PALLENE_UNREACHABLE __builtin_unreachable()

/* Type tags */
static const char *pallene_tag_name(int raw_tag);
static const char *pallene_type_name(lua_State *L, const TValue *v);
static int pallene_is_truthy(const TValue *v);
static int pallene_is_record(const TValue *v, const TValue *meta_table);
static int pallene_bvalue(TValue *obj);
Expand All @@ -57,7 +57,8 @@ static void pallene_setbvalue(TValue *obj, int b);
static void pallene_barrierback_unboxed(lua_State *L, GCObject *p, GCObject *v);

/* Runtime errors */
static l_noret pallene_runtime_tag_check_error(lua_State *L, const char* file, int line, int expected_tag, int received_tag,const char *description_fmt, ...);
static l_noret pallene_runtime_tag_check_error(lua_State *L, const char* file, int line,
const char *expected_type_name, const TValue *received_type, const char *description_fmt, ...);
static l_noret pallene_runtime_arity_error(lua_State *L, const char *name, int expected, int received);
static l_noret pallene_runtime_divide_by_zero_error(lua_State *L, const char* file, int line);
static l_noret pallene_runtime_mod_by_zero_error(lua_State *L, const char* file, int line);
Expand Down Expand Up @@ -96,14 +97,14 @@ static TString *pallene_tostring(lua_State *L, const char* file, int line, TValu
static void pallene_io_write(lua_State *L, TString *str);


static const char *pallene_tag_name(int raw_tag)
static const char *pallene_type_name(lua_State *L, const TValue *v)
{
if (raw_tag == LUA_VNUMINT) {
if (rawtt(v) == LUA_VNUMINT) {
return "integer";
} else if (raw_tag == LUA_VNUMFLT) {
} else if (rawtt(v) == LUA_VNUMFLT) {
return "float";
} else {
return ttypename(novariant(raw_tag));
return luaT_objtypename(L, v);
}
}

Expand Down Expand Up @@ -147,13 +148,12 @@ static void pallene_runtime_tag_check_error(
lua_State *L,
const char* file,
int line,
int expected_tag,
int received_tag,
const char *expected_type_name,
const TValue *received_type,
const char *description_fmt,
...
){
const char *expected_type = pallene_tag_name(expected_tag);
const char *received_type = pallene_tag_name(received_tag);
const char *received_type_name = pallene_type_name(L, received_type);

/* This code is inspired by luaL_error */
luaL_where(L, 1);
Expand All @@ -170,7 +170,7 @@ static void pallene_runtime_tag_check_error(
va_end(argp);
}
lua_pushfstring(L, ", expected %s but found %s",
expected_type, received_type);
expected_type_name, received_type_name);
lua_concat(L, 5);
lua_error(L);
PALLENE_UNREACHABLE;
Expand Down
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