66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#include "parse.h"
|
|
#include <ivy/ident.h>
|
|
#include <ivy/asm/bin.h>
|
|
#include <ivy/asm/assembler.h>
|
|
#include <ivy/asm/lex.h>
|
|
|
|
struct atom_parser_state {
|
|
struct parser_state s_base;
|
|
unsigned int s_prev_token;
|
|
|
|
struct ivy_asm_token *s_name;
|
|
};
|
|
|
|
static enum ivy_status init_state(
|
|
struct ivy_asm_parser *ctx, struct parser_state *s)
|
|
{
|
|
struct atom_parser_state *state = (struct atom_parser_state *)s;
|
|
state->s_prev_token = IVY_ASM_SYM_LEFT_PAREN;
|
|
return IVY_OK;
|
|
}
|
|
|
|
static enum ivy_status parse_ident(
|
|
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
|
|
{
|
|
struct atom_parser_state *state = (struct atom_parser_state *)asm_parser_get_state(ctx);
|
|
if (state->s_prev_token != IVY_ASM_SYM_LEFT_PAREN) {
|
|
return IVY_ERR_BAD_SYNTAX;
|
|
}
|
|
|
|
if (state->s_name) {
|
|
return IVY_ERR_BAD_SYNTAX;
|
|
}
|
|
|
|
state->s_name = tok;
|
|
state->s_prev_token = IVY_ASM_TOK_IDENT;
|
|
|
|
return IVY_OK;
|
|
}
|
|
|
|
static enum ivy_status parse_right_paren(
|
|
struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
|
|
{
|
|
struct atom_parser_state *state = (struct atom_parser_state *)asm_parser_get_state(ctx);
|
|
|
|
if (state->s_prev_token != IVY_ASM_TOK_IDENT) {
|
|
return IVY_ERR_BAD_SYNTAX;
|
|
}
|
|
|
|
if (!state->s_name) {
|
|
return IVY_ERR_BAD_SYNTAX;
|
|
}
|
|
|
|
asm_parser_pop_state(ctx, state->s_name);
|
|
return IVY_OK;
|
|
}
|
|
|
|
struct parser_state_type atom_parser_state_type = {
|
|
.n_init_state = init_state,
|
|
.n_state_size = sizeof(struct atom_parser_state),
|
|
.n_token_parsers = {
|
|
TOK_PARSER(IDENT, parse_ident),
|
|
},
|
|
.n_symbol_parsers = {
|
|
SYM_PARSER(RIGHT_PAREN, parse_right_paren),
|
|
},
|
|
}; |