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Add #no_type_assert and #type_assert to disable implicit type assertions with x.(T)

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gingerBill
2022-01-27 16:08:47 +00:00
parent 16786aac78
commit 24e7356825
8 changed files with 144 additions and 48 deletions
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src/llvm_backend_expr.cpp
+43 -33
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@@ -2768,28 +2768,30 @@ lbValue lb_build_unary_and(lbProcedure *p, Ast *expr) {
Type *src_type = type_deref(v.type);
Type *dst_type = type;
lbValue src_tag = {};
lbValue dst_tag = {};
if (is_type_union_maybe_pointer(src_type)) {
src_tag = lb_emit_comp_against_nil(p, Token_NotEq, v);
dst_tag = lb_const_bool(p->module, t_bool, true);
} else {
src_tag = lb_emit_load(p, lb_emit_union_tag_ptr(p, v));
dst_tag = lb_const_union_tag(p->module, src_type, dst_type);
if ((p->state_flags & StateFlag_no_type_assert) == 0) {
lbValue src_tag = {};
lbValue dst_tag = {};
if (is_type_union_maybe_pointer(src_type)) {
src_tag = lb_emit_comp_against_nil(p, Token_NotEq, v);
dst_tag = lb_const_bool(p->module, t_bool, true);
} else {
src_tag = lb_emit_load(p, lb_emit_union_tag_ptr(p, v));
dst_tag = lb_const_union_tag(p->module, src_type, dst_type);
}
lbValue ok = lb_emit_comp(p, Token_CmpEq, src_tag, dst_tag);
auto args = array_make<lbValue>(permanent_allocator(), 6);
args[0] = ok;
args[1] = lb_find_or_add_entity_string(p->module, get_file_path_string(pos.file_id));
args[2] = lb_const_int(p->module, t_i32, pos.line);
args[3] = lb_const_int(p->module, t_i32, pos.column);
args[4] = lb_typeid(p->module, src_type);
args[5] = lb_typeid(p->module, dst_type);
lb_emit_runtime_call(p, "type_assertion_check", args);
}
lbValue ok = lb_emit_comp(p, Token_CmpEq, src_tag, dst_tag);
auto args = array_make<lbValue>(permanent_allocator(), 6);
args[0] = ok;
args[1] = lb_find_or_add_entity_string(p->module, get_file_path_string(pos.file_id));
args[2] = lb_const_int(p->module, t_i32, pos.line);
args[3] = lb_const_int(p->module, t_i32, pos.column);
args[4] = lb_typeid(p->module, src_type);
args[5] = lb_typeid(p->module, dst_type);
lb_emit_runtime_call(p, "type_assertion_check", args);
lbValue data_ptr = v;
return lb_emit_conv(p, data_ptr, tv.type);
} else if (is_type_any(t)) {
@@ -2797,23 +2799,23 @@ lbValue lb_build_unary_and(lbProcedure *p, Ast *expr) {
if (is_type_pointer(v.type)) {
v = lb_emit_load(p, v);
}
lbValue data_ptr = lb_emit_struct_ev(p, v, 0);
lbValue any_id = lb_emit_struct_ev(p, v, 1);
lbValue id = lb_typeid(p->module, type);
if ((p->state_flags & StateFlag_no_type_assert) == 0) {
lbValue any_id = lb_emit_struct_ev(p, v, 1);
lbValue id = lb_typeid(p->module, type);
lbValue ok = lb_emit_comp(p, Token_CmpEq, any_id, id);
auto args = array_make<lbValue>(permanent_allocator(), 6);
args[0] = ok;
lbValue ok = lb_emit_comp(p, Token_CmpEq, any_id, id);
auto args = array_make<lbValue>(permanent_allocator(), 6);
args[0] = ok;
args[1] = lb_find_or_add_entity_string(p->module, get_file_path_string(pos.file_id));
args[2] = lb_const_int(p->module, t_i32, pos.line);
args[3] = lb_const_int(p->module, t_i32, pos.column);
args[1] = lb_find_or_add_entity_string(p->module, get_file_path_string(pos.file_id));
args[2] = lb_const_int(p->module, t_i32, pos.line);
args[3] = lb_const_int(p->module, t_i32, pos.column);
args[4] = any_id;
args[5] = id;
lb_emit_runtime_call(p, "type_assertion_check", args);
args[4] = any_id;
args[5] = id;
lb_emit_runtime_call(p, "type_assertion_check", args);
}
return lb_emit_conv(p, data_ptr, tv.type);
} else {
@@ -2843,6 +2845,14 @@ lbValue lb_build_expr(lbProcedure *p, Ast *expr) {
out &= ~StateFlag_bounds_check;
}
if (in & StateFlag_type_assert) {
out |= StateFlag_type_assert;
out &= ~StateFlag_no_type_assert;
} else if (in & StateFlag_no_type_assert) {
out |= StateFlag_no_type_assert;
out &= ~StateFlag_type_assert;
}
p->state_flags = out;
}