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py/compile: Factor code that compiles viper type annotations.

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This commit is contained in:
Damien George 2018-09-15 13:43:49 +10:00
parent a169a5848c
commit 9f2067288a
2 changed files with 27 additions and 36 deletions
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59
py/compile.c
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@ -2737,6 +2737,25 @@ STATIC void compile_node(compiler_t *comp, mp_parse_node_t pn) {
}
}
#if MICROPY_EMIT_NATIVE
STATIC int compile_viper_type_annotation(compiler_t *comp, mp_parse_node_t pn_annotation) {
int native_type = MP_NATIVE_TYPE_OBJ;
if (MP_PARSE_NODE_IS_NULL(pn_annotation)) {
// No annotation, type defaults to object
} else if (MP_PARSE_NODE_IS_ID(pn_annotation)) {
qstr type_name = MP_PARSE_NODE_LEAF_ARG(pn_annotation);
native_type = mp_native_type_from_qstr(type_name);
if (native_type < 0) {
comp->compile_error = mp_obj_new_exception_msg_varg(&mp_type_ViperTypeError, "unknown type '%q'", type_name);
native_type = 0;
}
} else {
compile_syntax_error(comp, pn_annotation, "annotation must be an identifier");
}
return native_type;
}
#endif
STATIC void compile_scope_func_lambda_param(compiler_t *comp, mp_parse_node_t pn, pn_kind_t pn_name, pn_kind_t pn_star, pn_kind_t pn_dbl_star) {
// check that **kw is last
if ((comp->scope_cur->scope_flags & MP_SCOPE_FLAG_VARKEYWORDS) != 0) {
@ -2815,20 +2834,7 @@ STATIC void compile_scope_func_lambda_param(compiler_t *comp, mp_parse_node_t pn
#if MICROPY_EMIT_NATIVE
if (comp->scope_cur->emit_options == MP_EMIT_OPT_VIPER && pn_name == PN_typedargslist_name && pns != NULL) {
mp_parse_node_t pn_annotation = pns->nodes[1];
if (MP_PARSE_NODE_IS_NULL(pn_annotation)) {
// No annotation
} else if (MP_PARSE_NODE_IS_ID(pn_annotation)) {
qstr arg_type = MP_PARSE_NODE_LEAF_ARG(pn_annotation);
int native_type = mp_native_type_from_qstr(arg_type);
if (native_type < 0) {
comp->compile_error = mp_obj_new_exception_msg_varg(&mp_type_ViperTypeError, "unknown type '%q'", arg_type);
} else {
id_info->flags |= native_type << ID_FLAG_VIPER_TYPE_POS;
}
} else {
compile_syntax_error(comp, pn_annotation, "parameter annotation must be an identifier");
}
id_info->flags |= compile_viper_type_annotation(comp, pns->nodes[1]) << ID_FLAG_VIPER_TYPE_POS;
}
#else
(void)pns;
@ -2964,29 +2970,14 @@ STATIC void compile_scope(compiler_t *comp, scope_t *scope, pass_kind_t pass) {
if (comp->pass == MP_PASS_SCOPE) {
comp->have_star = false;
apply_to_single_or_list(comp, pns->nodes[1], PN_typedargslist, compile_scope_func_param);
}
#if MICROPY_EMIT_NATIVE
if (comp->pass == MP_PASS_SCOPE && scope->emit_options == MP_EMIT_OPT_VIPER) {
// compile annotations; only needed for viper emitter
// pns->nodes[2] is return/whole function annotation
mp_parse_node_t pn_annotation = pns->nodes[2];
if (!MP_PARSE_NODE_IS_NULL(pn_annotation)) {
// nodes[2] can be null or a test-expr
if (MP_PARSE_NODE_IS_ID(pn_annotation)) {
qstr ret_type = MP_PARSE_NODE_LEAF_ARG(pn_annotation);
int native_type = mp_native_type_from_qstr(ret_type);
if (native_type < 0) {
comp->compile_error = mp_obj_new_exception_msg_varg(&mp_type_ViperTypeError, "unknown type '%q'", ret_type);
} else {
scope->scope_flags |= native_type << MP_SCOPE_FLAG_VIPERRET_POS;
}
} else {
compile_syntax_error(comp, pn_annotation, "return annotation must be an identifier");
}
#if MICROPY_EMIT_NATIVE
if (scope->emit_options == MP_EMIT_OPT_VIPER) {
// Compile return type; pns->nodes[2] is return/whole function annotation
scope->scope_flags |= compile_viper_type_annotation(comp, pns->nodes[2]) << MP_SCOPE_FLAG_VIPERRET_POS;
}
#endif // MICROPY_EMIT_NATIVE
}
#endif // MICROPY_EMIT_NATIVE
compile_node(comp, pns->nodes[3]); // 3 is function body
// emit return if it wasn't the last opcode

4
tests/micropython/viper_error.py.exp
View File

@ -1,5 +1,5 @@
SyntaxError('parameter annotation must be an identifier',)
SyntaxError('return annotation must be an identifier',)
SyntaxError('annotation must be an identifier',)
SyntaxError('annotation must be an identifier',)
ViperTypeError("unknown type 'unknown_type'",)
ViperTypeError("Viper functions don't currently support more than 4 arguments",)
ViperTypeError("local 'x' used before type known",)