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lang: codegen: implement while-loop code generation

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max 🍓
2025-09-08 16:26:12 +01:00
parent 8425e2db4b
commit c442e53ffe
3 changed files with 179 additions and 0 deletions
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2
lang/codegen/generator.c
View File

@@ -13,6 +13,7 @@ extern const struct code_generator return_generator;
extern const struct code_generator cond_generator;
extern const struct code_generator cond_group_generator;
extern const struct code_generator for_loop_generator;
extern const struct code_generator while_loop_generator;
static const struct code_generator *code_generators[] = {
[CODE_GENERATOR_UNIT] = &unit_generator,
@@ -26,6 +27,7 @@ static const struct code_generator *code_generators[] = {
[CODE_GENERATOR_COND] = &cond_generator,
[CODE_GENERATOR_COND_GROUP] = &cond_group_generator,
[CODE_GENERATOR_FOR_LOOP] = &for_loop_generator,
[CODE_GENERATOR_WHILE_LOOP] = &while_loop_generator,
};
static const size_t nr_code_generators
= sizeof code_generators / sizeof code_generators[0];

23
lang/codegen/unit.c
View File

@@ -120,6 +120,28 @@ static struct code_generator_result gen_for_loop(
return CODEGEN_RESULT_OK(CODEGEN_R_REPEAT_NODE);
}
static struct code_generator_result gen_while_loop(
struct ivy_codegen *gen, struct code_generator_state *state,
struct ivy_ast_node *node, size_t depth)
{
struct unit_codegen_state *unit = (struct unit_codegen_state *)state;
struct mie_builder *builder = gen->c_builder;
struct mie_func *current = mie_builder_get_current_func(builder);
enum ivy_status status = IVY_OK;
if (!current || current != unit->s_immediate) {
status = switch_to_immediate_func(gen, unit, ENSURE_OPEN_BLOCK);
}
if (status != IVY_OK) {
return CODEGEN_RESULT_ERR(status);
}
codegen_push_generator(
gen, CODE_GENERATOR_WHILE_LOOP, CODEGEN_F_IGNORE_RESULT, NULL);
return CODEGEN_RESULT_OK(CODEGEN_R_REPEAT_NODE);
}
static void serialise_package_name(b_queue *parts, b_stringstream *out)
{
b_stringstream_add(out, "_ZN");
@@ -274,6 +296,7 @@ struct code_generator unit_generator = {
.g_node_generators = {
NODE_CODEGEN(RETURN, gen_return),
NODE_CODEGEN(FOR_LOOP, gen_for_loop),
NODE_CODEGEN(WHILE_LOOP, gen_while_loop),
NODE_CODEGEN(UNIT_PACKAGE, gen_unit_package),
NODE_CODEGEN(UNIT_IMPORT, gen_unit_import),
},

154
lang/codegen/while-loop.c Normal file
View File

@@ -0,0 +1,154 @@
#include "codegen.h"
#include <mie/ir/block.h>
#include <mie/ir/func.h>
#include <mie/ir/module.h>
struct while_codegen_state {
struct code_generator_state s_base;
struct mie_value *s_cond_value;
struct {
struct mie_block *b_cond;
struct mie_block *b_body;
struct mie_block *b_end;
} s_blocks;
};
static struct code_generator_result gen_expr(
struct ivy_codegen *gen, struct code_generator_state *state,
struct ivy_ast_node *node, size_t depth)
{
struct while_codegen_state *while_loop
= (struct while_codegen_state *)state;
if (!while_loop->s_cond_value) {
mie_builder_br(gen->c_builder, while_loop->s_blocks.b_cond);
struct mie_func *func
= mie_builder_get_current_func(gen->c_builder);
mie_func_insert_block(func, while_loop->s_blocks.b_cond, NULL);
mie_builder_set_insert_point(
gen->c_builder, while_loop->s_blocks.b_cond);
}
codegen_push_generator(gen, CODE_GENERATOR_EXPR, 0, NULL);
return CODEGEN_RESULT_OK(CODEGEN_R_REPEAT_NODE);
}
static struct code_generator_result gen_while_loop(
struct ivy_codegen *gen, struct code_generator_state *state,
struct ivy_ast_node *node, size_t depth)
{
return CODEGEN_RESULT_OK(0);
}
static struct code_generator_result gen_block(
struct ivy_codegen *gen, struct code_generator_state *state,
struct ivy_ast_node *node, size_t depth)
{
struct while_codegen_state *while_loop
= (struct while_codegen_state *)state;
struct mie_func *func = mie_builder_get_current_func(gen->c_builder);
// mie_builder_br(gen->c_builder, while_loop->s_blocks.b_cond);
// mie_func_insert_block(func, while_loop->s_blocks.b_cond, NULL);
// mie_builder_set_insert_point(gen->c_builder, while_loop->s_blocks.b_cond);
codegen_push_generator(gen, CODE_GENERATOR_BLOCK, 0, NULL);
return CODEGEN_RESULT_OK(CODEGEN_R_REPEAT_NODE);
}
static enum ivy_status state_init(
struct ivy_codegen *gen, struct code_generator_state *state,
uintptr_t argv, void *argp)
{
struct while_codegen_state *while_loop
= (struct while_codegen_state *)state;
struct mie_func *func = mie_builder_get_current_func(gen->c_builder);
while_loop->s_blocks.b_cond = mie_func_create_block(func, "while.cond");
while_loop->s_blocks.b_body = mie_func_create_block(func, "while.body");
while_loop->s_blocks.b_end = mie_func_create_block(func, "while.end");
state->s_loop_break_target = while_loop->s_blocks.b_end;
state->s_loop_repeat_target = while_loop->s_blocks.b_cond;
return IVY_OK;
}
static enum ivy_status gen_cond_branch(
struct ivy_codegen *gen, struct while_codegen_state *while_loop)
{
struct mie_func *func = mie_builder_get_current_func(gen->c_builder);
mie_builder_br_if(
gen->c_builder, while_loop->s_cond_value,
while_loop->s_blocks.b_body, while_loop->s_blocks.b_end);
return IVY_OK;
}
static enum ivy_status gen_body(
struct ivy_codegen *gen, struct while_codegen_state *while_loop)
{
struct mie_func *func = mie_builder_get_current_func(gen->c_builder);
mie_func_insert_block(func, while_loop->s_blocks.b_body, NULL);
mie_builder_set_insert_point(gen->c_builder, while_loop->s_blocks.b_body);
return IVY_OK;
}
static enum ivy_status gen_end_block(
struct ivy_codegen *gen, struct while_codegen_state *while_loop)
{
mie_builder_br(gen->c_builder, while_loop->s_blocks.b_cond);
struct mie_func *func = mie_builder_get_current_func(gen->c_builder);
mie_func_insert_block(func, while_loop->s_blocks.b_end, NULL);
mie_builder_set_insert_point(gen->c_builder, while_loop->s_blocks.b_end);
return IVY_OK;
}
static enum ivy_status state_fini(
struct ivy_codegen *gen, struct code_generator_state *state,
struct code_generator_value *result)
{
struct while_codegen_state *while_loop
= (struct while_codegen_state *)state;
gen_end_block(gen, while_loop);
return IVY_OK;
}
static struct code_generator_result value_received(
struct ivy_codegen *gen, struct code_generator_state *state,
struct code_generator_value *value)
{
struct while_codegen_state *while_loop
= (struct while_codegen_state *)state;
struct mie_func *func = mie_builder_get_current_func(gen->c_builder);
if (!while_loop->s_cond_value) {
while_loop->s_cond_value
= code_generator_value_get_mie_value(value);
gen_cond_branch(gen, while_loop);
gen_body(gen, while_loop);
return CODEGEN_RESULT_OK(0);
}
return CODEGEN_RESULT_OK(0);
}
struct code_generator while_loop_generator = {
.g_type = CODE_GENERATOR_WHILE_LOOP,
.g_state_size = sizeof(struct while_codegen_state),
.g_state_init = state_init,
.g_state_fini = state_fini,
.g_value_received = value_received,
.g_expr_generator = gen_expr,
.g_node_generators = {
NODE_CODEGEN(WHILE_LOOP, gen_while_loop),
NODE_CODEGEN(BLOCK, gen_block),
},
};