Commit 39cf3285 authored by Damien's avatar Damien
Browse files

Oops: add emitpass1.c for new factorised emit code.

parent 826005c6
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "misc.h"
#include "lexer.h"
#include "machine.h"
#include "parse.h"
#include "compile.h"
#include "scope.h"
#include "runtime.h"
#include "emit.h"
struct _emit_t {
qstr qstr___class__;
scope_t *scope;
};
emit_t *emit_pass1_new(qstr qstr___class__) {
emit_t *emit = m_new(emit_t, 1);
emit->qstr___class__ = qstr___class__;
return emit;
}
void emit_pass1_free(emit_t *emit) {
m_free(emit);
}
static void emit_pass1_dummy(emit_t *emit) {
}
static void emit_pass1_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scope) {
assert(pass == PASS_1);
emit->scope = scope;
}
static void emit_pass1_end_pass(emit_t *emit) {
}
static void emit_pass1_load_id(emit_t *emit, qstr qstr) {
// name adding/lookup
bool added;
id_info_t *id = scope_find_or_add_id(emit->scope, qstr, &added);
if (added) {
if (strcmp(qstr_str(qstr), "AssertionError") == 0) {
id->kind = ID_INFO_KIND_GLOBAL_EXPLICIT;
// TODO how much of a hack is this?
} else if (strcmp(qstr_str(qstr), "super") == 0 && emit->scope->kind == SCOPE_FUNCTION) {
// special case, super is a global, and also counts as use of __class__
id->kind = ID_INFO_KIND_GLOBAL_EXPLICIT;
id_info_t *id2 = scope_find_local_in_parent(emit->scope, emit->qstr___class__);
if (id2 != NULL) {
id2 = scope_find_or_add_id(emit->scope, emit->qstr___class__, &added);
if (added) {
id2->kind = ID_INFO_KIND_FREE;
scope_close_over_in_parents(emit->scope, emit->qstr___class__);
}
}
} else {
id_info_t *id2 = scope_find_local_in_parent(emit->scope, qstr);
if (id2 != NULL && (id2->kind == ID_INFO_KIND_LOCAL || id2->kind == ID_INFO_KIND_CELL || id2->kind == ID_INFO_KIND_FREE)) {
id->kind = ID_INFO_KIND_FREE;
scope_close_over_in_parents(emit->scope, qstr);
} else {
id->kind = ID_INFO_KIND_GLOBAL_IMPLICIT;
}
}
}
}
static id_info_t *get_id_for_modification(scope_t *scope, qstr qstr) {
// name adding/lookup
bool added;
id_info_t *id = scope_find_or_add_id(scope, qstr, &added);
if (added) {
if (scope->kind == SCOPE_MODULE || scope->kind == SCOPE_CLASS) {
id->kind = ID_INFO_KIND_GLOBAL_IMPLICIT;
} else {
id->kind = ID_INFO_KIND_LOCAL;
}
} else if (scope->kind >= SCOPE_FUNCTION && scope->kind <= SCOPE_GEN_EXPR && id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
// rebind as a local variable
id->kind = ID_INFO_KIND_LOCAL;
}
assert(id != NULL); // TODO can this ever fail?
return id;
}
static void emit_pass1_store_id(emit_t *emit, qstr qstr) {
get_id_for_modification(emit->scope, qstr);
}
static void emit_pass1_delete_id(emit_t *emit, qstr qstr) {
get_id_for_modification(emit->scope, qstr);
}
const emit_method_table_t emit_pass1_method_table = {
(void*)emit_pass1_dummy,
emit_pass1_start_pass,
emit_pass1_end_pass,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
emit_pass1_load_id,
emit_pass1_store_id,
emit_pass1_delete_id,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
(void*)emit_pass1_dummy,
};
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