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lang: ast: implement parsing 'use' statements

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max 🍓
2024-11-25 16:49:07 +00:00
parent f1032f0c8e
commit dca0aba183
3 changed files with 112 additions and 1 deletions
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103
lang/ast/unit-import.c Normal file
View File

@@ -0,0 +1,103 @@
#include <blue/object/string.h>
#include <ivy/lang/lex.h>
#include <stdio.h>
#include "ctx.h"
#include "node.h"
struct unit_import_parser_state {
struct parser_state s_base;
int s_prev_token;
};
static enum ivy_status parse_dot(struct ivy_parser *ctx, struct ivy_token *tok)
{
struct unit_import_parser_state *state
= parser_get_state(ctx, struct unit_import_parser_state);
if (state->s_prev_token != IVY_TOK_IDENT) {
return IVY_ERR_BAD_SYNTAX;
}
state->s_prev_token = IVY_SYM_DOT;
return IVY_OK;
}
static enum ivy_status parse_ident(struct ivy_parser *ctx, struct ivy_token *tok)
{
struct unit_import_parser_state *state
= parser_get_state(ctx, struct unit_import_parser_state);
struct ivy_ast_unit_import_node *node = (struct ivy_ast_unit_import_node *)(state->s_base.s_node);
if (state->s_prev_token == IVY_TOK_IDENT) {
return IVY_ERR_BAD_SYNTAX;
}
b_queue_push_back(&node->n_ident, &tok->t_entry);
state->s_prev_token = IVY_TOK_IDENT;
return IVY_OK;
}
static enum ivy_status parse_linefeed(struct ivy_parser *ctx, struct ivy_token *tok)
{
struct unit_import_parser_state *state
= parser_get_state(ctx, struct unit_import_parser_state);
if (state->s_prev_token != IVY_TOK_IDENT) {
return IVY_ERR_BAD_SYNTAX;
}
parser_pop_state(ctx, STATE_ADD_NODE_TO_PARENT);
return IVY_OK;
}
static enum ivy_status add_child(
struct ivy_ast_node *parent, struct ivy_ast_node *child)
{
return IVY_ERR_NOT_SUPPORTED;
}
static void print(struct ivy_ast_node *node)
{
struct ivy_ast_unit_import_node *unit_import = (struct ivy_ast_unit_import_node *)node;
b_string *str = b_string_create();
b_queue_iterator it = {0};
b_queue_foreach (&it, &unit_import->n_ident) {
struct ivy_token *tok = b_unbox(struct ivy_token, it.entry, t_entry);
if (b_string_get_size(str, B_STRLEN_NORMAL) > 0) {
b_string_append_cstr(str, ".");
}
b_string_append_cstr(str, tok->t_str);
}
printf("%s(%s)\n", ivy_ast_node_type_to_string(node->n_type), b_string_ptr(str));
b_string_release(str);
}
static void init_state(struct parser_state *sp)
{
struct unit_import_parser_state *state
= (struct unit_import_parser_state *)sp;
state->s_prev_token = IVY_KW_PACKAGE;
}
struct ast_node_type unit_import_node_ops = {
.n_add_child = add_child,
.n_print = print,
.n_init_state = init_state,
.n_state_size = sizeof(struct unit_import_parser_state),
.n_node_size = sizeof(struct ivy_ast_unit_import_node),
.n_symbol_parsers = {
[IVY_SYM_DOT] = parse_dot,
},
.n_token_parsers = {
[IVY_TOK_IDENT] = parse_ident,
[IVY_TOK_LINEFEED] = parse_linefeed,
}
};

8
lang/ast/unit.c
View File

@@ -10,6 +10,13 @@ static enum ivy_status parse_package_keyword(
return IVY_OK;
}
static enum ivy_status parse_use_keyword(
struct ivy_parser *ctx, struct ivy_token *tok)
{
parser_push_state(ctx, IVY_AST_UNIT_IMPORT);
return IVY_OK;
}
static enum ivy_status add_child(
struct ivy_ast_node *parent, struct ivy_ast_node *child)
{
@@ -35,5 +42,6 @@ struct ast_node_type unit_node_ops = {
.n_node_size = sizeof(struct ivy_ast_unit_node),
.n_keyword_parsers = {
[IVY_KW_PACKAGE] = parse_package_keyword,
[IVY_KW_USE] = parse_use_keyword,
},
};