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py: Implement 'not' in compiler, and improve rt_is_true.

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This commit is contained in:
Damien George
2014-01-28 23:27:35 +00:00
parent b40892d266
commit e4b6a079b3
3 changed files with 26 additions and 17 deletions
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14
py/compile.c
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@@ -1912,7 +1912,21 @@ void compile_and_test(compiler_t *comp, mp_parse_node_struct_t *pns) {
void compile_not_test_2(compiler_t *comp, mp_parse_node_struct_t *pns) {
compile_node(comp, pns->nodes[0]);
#if MICROPY_EMIT_CPYTHON
EMIT_ARG(unary_op, RT_UNARY_OP_NOT);
#else
// eliminate use of NOT byte code
int l_load_false = comp_next_label(comp);
int l_done = comp_next_label(comp);
int stack_size = EMIT(get_stack_size);
EMIT_ARG(pop_jump_if_true, l_load_false);
EMIT_ARG(load_const_tok, MP_TOKEN_KW_TRUE);
EMIT_ARG(jump, l_done);
EMIT_ARG(label_assign, l_load_false);
EMIT_ARG(load_const_tok, MP_TOKEN_KW_FALSE);
EMIT_ARG(label_assign, l_done);
EMIT_ARG(set_stack_size, stack_size); // force stack size since it counts 1 pop and 2 pushes statically, but really it's 1 pop and 1 push dynamically
#endif
}
void compile_comparison(compiler_t *comp, mp_parse_node_struct_t *pns) {