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asm: implement an asm parser and emitter

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This commit is contained in:
max 🍓
2024-12-13 12:26:01 +00:00
parent 0a8d913fdd
commit 5fe1a21978
19 changed files with 1106 additions and 49 deletions
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157
asm/parse/selector.c Normal file
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#include "parse.h"
#include <ivy/selector.h>
#include <ivy/asm/bin.h>
#include <ivy/asm/assembler.h>
#include <ivy/asm/lex.h>
struct selector_parser_state {
struct parser_state s_base;
unsigned int s_prev_token;
unsigned int s_paren_depth;
struct ivy_asm_token *s_prev_label;
struct ivy_selector *s_sel;
};
static enum ivy_status init_state(
struct ivy_asm_parser *ctx, struct parser_state *s)
{
struct selector_parser_state *state = (struct selector_parser_state *)s;
state->s_prev_token = IVY_ASM_SYM_LEFT_PAREN;
return ivy_selector_create(&state->s_sel);
}
static enum ivy_status parse_ident(
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
{
struct selector_parser_state *state = (struct selector_parser_state *)asm_parser_get_state(ctx);
if (state->s_prev_token == IVY_ASM_TOK_LABEL && state->s_prev_label) {
ivy_selector_add_arg(state->s_sel, state->s_prev_label->t_str, tok->t_str);
ivy_asm_token_destroy(tok);
ivy_asm_token_destroy(state->s_prev_label);
state->s_prev_label = tok;
state->s_prev_token = IVY_ASM_TOK_LABEL;
return IVY_OK;
}
if (state->s_prev_token != IVY_ASM_SYM_LEFT_PAREN && state->s_prev_token != IVY_ASM_SYM_HYPHEN && state->s_prev_token != IVY_ASM_SYM_PLUS) {
return IVY_ERR_BAD_SYNTAX;
}
ivy_selector_set_name(state->s_sel, tok->t_str);
ivy_asm_token_destroy(tok);
state->s_prev_token = IVY_ASM_TOK_IDENT;
return IVY_OK;
}
static enum ivy_status parse_label(
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
{
struct selector_parser_state *state = (struct selector_parser_state *)asm_parser_get_state(ctx);
if (state->s_prev_token != IVY_ASM_SYM_LEFT_PAREN
&& state->s_prev_token != IVY_ASM_TOK_LABEL
&& state->s_prev_token != IVY_ASM_SYM_HYPHEN
&& state->s_prev_token != IVY_ASM_SYM_PLUS) {
return IVY_ERR_BAD_SYNTAX;
}
if (state->s_prev_label) {
ivy_selector_add_arg(state->s_sel, state->s_prev_label->t_str, NULL);
ivy_asm_token_destroy(state->s_prev_label);
state->s_prev_label = NULL;
}
state->s_prev_label = tok;
state->s_prev_token = IVY_ASM_TOK_LABEL;
return IVY_OK;
}
static enum ivy_status parse_hyphen(
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
{
struct selector_parser_state *state = (struct selector_parser_state *)asm_parser_get_state(ctx);
if (state->s_prev_token != IVY_ASM_SYM_LEFT_PAREN) {
return IVY_ERR_BAD_SYNTAX;
}
ivy_selector_set_recipient(state->s_sel, IVY_SEL_OBJECT);
state->s_prev_token = IVY_ASM_SYM_HYPHEN;
return IVY_OK;
}
static enum ivy_status parse_plus(
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
{
struct selector_parser_state *state = (struct selector_parser_state *)asm_parser_get_state(ctx);
if (state->s_prev_token != IVY_ASM_SYM_LEFT_PAREN) {
return IVY_ERR_BAD_SYNTAX;
}
ivy_selector_set_recipient(state->s_sel, IVY_SEL_CLASS);
state->s_prev_token = IVY_ASM_SYM_PLUS;
return IVY_OK;
}
static enum ivy_status parse_left_paren(
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
{
struct selector_parser_state *state = (struct selector_parser_state *)asm_parser_get_state(ctx);
if (state->s_prev_token != IVY_ASM_TOK_IDENT) {
return IVY_ERR_BAD_SYNTAX;
}
if (state->s_paren_depth > 0) {
return IVY_ERR_BAD_SYNTAX;
}
state->s_paren_depth++;
state->s_prev_token = IVY_ASM_SYM_LEFT_PAREN;
return IVY_OK;
}
static enum ivy_status parse_right_paren(
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
{
struct selector_parser_state *state = (struct selector_parser_state *)asm_parser_get_state(ctx);
if (state->s_prev_token != IVY_ASM_TOK_IDENT && state->s_prev_token != IVY_ASM_TOK_LABEL && state->s_prev_token != IVY_ASM_SYM_RIGHT_PAREN) {
return IVY_ERR_BAD_SYNTAX;
}
if (state->s_prev_label) {
ivy_selector_add_arg(state->s_sel, state->s_prev_label->t_str, NULL);
ivy_asm_token_destroy(state->s_prev_label);
state->s_prev_label = NULL;
}
if (state->s_paren_depth > 0) {
state->s_paren_depth--;
return IVY_OK;
}
asm_parser_pop_state(ctx, state->s_sel);
return IVY_OK;
}
struct parser_state_type selector_parser_state_type = {
.n_init_state = init_state,
.n_state_size = sizeof(struct selector_parser_state),
.n_token_parsers = {
TOK_PARSER(IDENT, parse_ident),
TOK_PARSER(LABEL, parse_label),
},
.n_symbol_parsers = {
SYM_PARSER(HYPHEN, parse_hyphen),
SYM_PARSER(PLUS, parse_plus),
SYM_PARSER(LEFT_PAREN, parse_left_paren),
SYM_PARSER(RIGHT_PAREN, parse_right_paren),
},
};