91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
#include "parse.h"
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#include <ivy/asm/assembler.h>
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#include <ivy/asm/bin.h>
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#include <ivy/asm/lex.h>
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#include <ivy/ident.h>
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struct ident_parser_state {
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struct parser_state s_base;
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unsigned int s_prev_token;
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b_queue s_parts;
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};
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static void init_state(struct ivy_asm_parser *ctx, struct parser_state *s)
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{
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struct ident_parser_state *state = (struct ident_parser_state *)s;
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state->s_prev_token = IVY_ASM_SYM_LEFT_PAREN;
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}
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static enum ivy_status parse_ident(
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struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
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{
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struct ident_parser_state *state
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= (struct ident_parser_state *)asm_parser_get_state(ctx);
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if (state->s_prev_token != IVY_ASM_SYM_LEFT_PAREN
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&& state->s_prev_token != IVY_ASM_SYM_DOT) {
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return IVY_ERR_BAD_SYNTAX;
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}
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b_queue_push_back(&state->s_parts, &tok->t_entry);
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state->s_prev_token = IVY_ASM_TOK_IDENT;
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return IVY_OK;
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}
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static enum ivy_status parse_dot(
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struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
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{
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struct ident_parser_state *state
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= (struct ident_parser_state *)asm_parser_get_state(ctx);
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if (state->s_prev_token != IVY_ASM_TOK_IDENT) {
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return IVY_ERR_BAD_SYNTAX;
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}
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state->s_prev_token = IVY_ASM_SYM_DOT;
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return IVY_OK;
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}
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static enum ivy_status parse_right_paren(
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struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
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{
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struct ident_parser_state *state
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= (struct ident_parser_state *)asm_parser_get_state(ctx);
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if (state->s_prev_token != IVY_ASM_TOK_IDENT) {
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return IVY_ERR_BAD_SYNTAX;
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}
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struct ivy_ident *ident = ivy_ident_create();
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b_queue_iterator it = {0};
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b_queue_iterator_begin(&state->s_parts, &it);
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while (b_queue_iterator_is_valid(&it)) {
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struct ivy_asm_token *tok
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= b_unbox(struct ivy_asm_token, it.entry, t_entry);
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b_queue_iterator_erase(&it);
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ivy_ident_add_part(ident, tok->t_str);
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ivy_asm_token_destroy(tok);
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}
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asm_parser_pop_state(ctx, ident);
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return IVY_OK;
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}
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struct parser_state_type ident_parser_state_type = {
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.n_init_state = init_state,
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.n_state_size = sizeof(struct ident_parser_state),
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.n_token_parsers = {
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TOK_PARSER(IDENT, parse_ident),
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},
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.n_symbol_parsers = {
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SYM_PARSER(DOT, parse_dot),
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SYM_PARSER(RIGHT_PAREN, parse_right_paren),
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},
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};
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