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lang: ast: move block parser state to separate header file

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this allows other parsers to specify what kind of token should end the
block.
This commit is contained in:
max 🍓
2024-11-28 16:56:25 +00:00
parent 6a765c4f2b
commit 7530dd36a2
2 changed files with 49 additions and 8 deletions
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45
lang/ast/block.c
View File

@@ -1,21 +1,17 @@
#include "ctx.h"
#include "node.h"
#include "block.h"
#include "iterate.h"
#include <blue/object/string.h>
#include <ivy/lang/lex.h>
#include <stdio.h>
struct block_parser_state {
struct parser_state s_base;
bool s_single_expr;
unsigned int s_terminator;
};
static struct token_parse_result parse_end(
struct ivy_parser *ctx, struct ivy_token *tok)
{
struct block_parser_state *state
= parser_get_state(ctx, struct class_parser_state);
= parser_get_state(ctx, struct block_parser_state);
struct ivy_ast_block_node *node
= (struct ivy_ast_block_node *)(state->s_base.s_node);
@@ -24,11 +20,28 @@ static struct token_parse_result parse_end(
return PARSE_RESULT(IVY_OK, 0);
}
static struct token_parse_result parse_bang(
struct ivy_parser* ctx, struct ivy_token* tok)
{
struct block_parser_state *state
= parser_get_state(ctx, struct block_parser_state);
struct ivy_ast_block_node *node
= (struct ivy_ast_block_node *)(state->s_base.s_node);
if (state->s_terminator != IVY_SYM_BANG) {
return PARSE_RESULT(IVY_ERR_BAD_SYNTAX, 0);
}
parser_pop_state(ctx, STATE_ADD_NODE_TO_PARENT);
return PARSE_RESULT(IVY_OK, PARSE_REPEAT_TOKEN);
}
static struct token_parse_result parse_expr_begin(
struct ivy_parser *ctx, struct ivy_token *tok)
{
struct block_parser_state *state
= parser_get_state(ctx, struct class_parser_state);
= parser_get_state(ctx, struct block_parser_state);
struct ivy_ast_block_node *node
= (struct ivy_ast_block_node *)(state->s_base.s_node);
@@ -52,14 +65,30 @@ static void init_state(struct ivy_parser *ctx, struct parser_state *sp)
struct class_parser_state *state = (struct class_parser_state *)sp;
}
static void collect_children(
struct ivy_ast_node *node, struct ivy_ast_node_iterator *iterator)
{
struct ivy_ast_block_node *block = (struct ivy_ast_block_node *)node;
b_queue_iterator it = {0};
b_queue_foreach(&it, &block->n_expr) {
struct ivy_ast_node *expr
= b_unbox(struct ivy_ast_node, it.entry, n_entry);
ast_node_iterator_enqueue_node(iterator, node, expr);
}
}
struct ast_node_type block_node_ops = {
.n_add_child = add_child,
.n_init_state = init_state,
.n_collect_children = collect_children,
.n_state_size = sizeof(struct block_parser_state),
.n_node_size = sizeof(struct ivy_ast_block_node),
.n_keyword_parsers = {
KW_PARSER(END, parse_end),
},
.n_symbol_parsers = {
SYM_PARSER(BANG, parse_bang),
},
.n_expr_parser = {
.expr_begin = parse_expr_begin,
},

12
lang/ast/block.h Normal file
View File

@@ -0,0 +1,12 @@
#ifndef _AST_BLOCK_H_
#define _AST_BLOCK_H_
#include "ctx.h"
struct block_parser_state {
struct parser_state s_base;
bool s_single_expr;
unsigned int s_terminator;
};
#endif