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Implement basic exception framework, and simple for loop.

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This commit is contained in:
Damien
2013-10-15 22:25:17 +01:00
parent 5dd455d06d
commit ce89a21ea4
9 changed files with 584 additions and 238 deletions
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40
py/compile.c
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@@ -16,6 +16,8 @@
// TODO need to mangle __attr names
#define MICROPY_EMIT_NATIVE (MICROPY_EMIT_X64 || MICROPY_EMIT_THUMB)
typedef enum {
PN_none = 0,
#define DEF_RULE(rule, comp, kind, arg...) PN_##rule,
@@ -853,16 +855,19 @@ static bool compile_built_in_decorator(compiler_t *comp, int name_len, py_parse_
}
qstr attr = PY_PARSE_NODE_LEAF_ARG(name_nodes[1]);
if (attr == comp->qstr_native) {
if (0) {
#if MICROPY_EMIT_NATIVE
} else if (attr == comp->qstr_native) {
*emit_options = EMIT_OPT_NATIVE_PYTHON;
} else if (attr == comp->qstr_viper) {
*emit_options = EMIT_OPT_VIPER;
#endif
#if MICROPY_EMIT_INLINE_THUMB
} else if (attr == comp->qstr_asm_thumb) {
*emit_options = EMIT_OPT_ASM_THUMB;
#endif
} else {
printf("SyntaxError: invalid micropython decorator\n");
printf("SyntaxError: invalid micropython decorator '%s'\n", qstr_str(attr));
}
return true;
@@ -1302,15 +1307,16 @@ void compile_while_stmt(compiler_t *comp, py_parse_node_struct_t *pns) {
int old_break_label = comp->break_label;
int old_continue_label = comp->continue_label;
int done_label = comp_next_label(comp);
int end_label = comp_next_label(comp);
int break_label = comp_next_label(comp);
int continue_label = comp_next_label(comp);
comp->break_label = break_label;
comp->continue_label = continue_label;
EMIT(setup_loop, end_label);
// compared to CPython, we have an optimised version of while loops
#if MICROPY_EMIT_CPYTHON
int done_label = comp_next_label(comp);
EMIT(setup_loop, break_label);
EMIT(label_assign, continue_label);
c_if_cond(comp, pns->nodes[0], false, done_label); // condition
compile_node(comp, pns->nodes[1]); // body
@@ -1318,21 +1324,27 @@ void compile_while_stmt(compiler_t *comp, py_parse_node_struct_t *pns) {
EMIT(jump, continue_label);
}
EMIT(label_assign, done_label);
// break/continue apply to outer loop (if any) in the else block
comp->break_label = old_break_label;
comp->continue_label = old_continue_label;
// CPython does not emit POP_BLOCK if the condition was a constant; don't undertand why
// this is a small hack to agree with CPython
if (!node_is_const_true(pns->nodes[0])) {
EMIT(pop_block);
}
#else
int top_label = comp_next_label(comp);
EMIT(jump, continue_label);
EMIT(label_assign, top_label);
compile_node(comp, pns->nodes[1]); // body
EMIT(label_assign, continue_label);
c_if_cond(comp, pns->nodes[0], true, top_label); // condition
#endif
// break/continue apply to outer loop (if any) in the else block
comp->break_label = old_break_label;
comp->continue_label = old_continue_label;
compile_node(comp, pns->nodes[2]); // else
EMIT(label_assign, break_label);
EMIT(label_assign, end_label);
}
void compile_for_stmt(compiler_t *comp, py_parse_node_struct_t *pns) {
@@ -1348,7 +1360,11 @@ void compile_for_stmt(compiler_t *comp, py_parse_node_struct_t *pns) {
comp->continue_label = for_label;
comp->break_label = break_label;
// I don't think our implementation needs SETUP_LOOP/POP_BLOCK for for-statements
#if MICROPY_EMIT_CPYTHON
EMIT(setup_loop, end_label);
#endif
compile_node(comp, pns->nodes[1]); // iterator
EMIT(get_iter);
EMIT(label_assign, for_label);
@@ -1365,7 +1381,9 @@ void compile_for_stmt(compiler_t *comp, py_parse_node_struct_t *pns) {
comp->break_label = old_break_label;
comp->continue_label = old_continue_label;
#if MICROPY_EMIT_CPYTHON
EMIT(pop_block);
#endif
compile_node(comp, pns->nodes[3]); // else (not tested)