py: Add MICROPY_DYNAMIC_COMPILER option to config compiler at runtime.
This new compile-time option allows to make the bytecode compiler
configurable at runtime by setting the fields in the mp_dynamic_compiler
structure. By using this feature, the compiler can generate bytecode
that targets any MicroPython runtime/VM, regardless of the host and
target compile-time settings.
Options so far that fall under this dynamic setting are:
- maximum number of bits that a small int can hold;
- whether caching of lookups is used in the bytecode;
- whether to use unicode strings or not (lexer behaviour differs, and
therefore generated string constants differ).
diff --git a/py/lexer.c b/py/lexer.c
index 89ecc38..76abedd 100644
--- a/py/lexer.c
+++ b/py/lexer.c
@@ -490,22 +490,25 @@
}
}
if (c != MP_LEXER_EOF) {
- #if MICROPY_PY_BUILTINS_STR_UNICODE
- if (c < 0x110000 && !is_bytes) {
- vstr_add_char(&lex->vstr, c);
- } else if (c < 0x100 && is_bytes) {
- vstr_add_byte(&lex->vstr, c);
- }
- #else
- // without unicode everything is just added as an 8-bit byte
- if (c < 0x100) {
- vstr_add_byte(&lex->vstr, c);
- }
- #endif
- else {
- // unicode character out of range
- // this raises a generic SyntaxError; could provide more info
- lex->tok_kind = MP_TOKEN_INVALID;
+ if (MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC) {
+ if (c < 0x110000 && !is_bytes) {
+ vstr_add_char(&lex->vstr, c);
+ } else if (c < 0x100 && is_bytes) {
+ vstr_add_byte(&lex->vstr, c);
+ } else {
+ // unicode character out of range
+ // this raises a generic SyntaxError; could provide more info
+ lex->tok_kind = MP_TOKEN_INVALID;
+ }
+ } else {
+ // without unicode everything is just added as an 8-bit byte
+ if (c < 0x100) {
+ vstr_add_byte(&lex->vstr, c);
+ } else {
+ // 8-bit character out of range
+ // this raises a generic SyntaxError; could provide more info
+ lex->tok_kind = MP_TOKEN_INVALID;
+ }
}
}
} else {