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Changed some stuff

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Maix0 2024-06-29 16:15:09 +02:00
parent d81c14b930
commit 66a0625382
4 changed files with 312 additions and 137 deletions
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442
ast/src/from_node.c
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@ -6,7 +6,7 @@
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */ /* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2024/06/17 12:41:56 by maiboyer #+# #+# */ /* Created: 2024/06/17 12:41:56 by maiboyer #+# #+# */
/* Updated: 2024/06/29 15:04:55 by maiboyer ### ########.fr */ /* Updated: 2024/06/29 16:14:11 by maiboyer ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@ -386,62 +386,17 @@ void ast_set_term(t_ast_node *node, t_ast_terminator_kind term)
(void)(void_storage); (void)(void_storage);
} }
t_error ast_from_node(t_parse_node node, t_const_str input, t_ast_node *out); t_vec_ast *_vec_command(t_ast_command *val, t_usize i)
{
/* FUNCTION THAT ARE DONE */ if (i == 0)
return (&val->prefixes);
t_error build_sym__bare_dollar(t_parse_node self, t_const_str input, t_ast_node *out); if (i == 1)
t_error build_sym_command(t_parse_node self, t_const_str input, t_ast_node *out); return (&val->cmd_word);
t_error build_sym_command_name(t_parse_node self, t_const_str input, t_ast_node *out); if (i == 2)
t_error build_sym_comment(t_parse_node self, t_const_str input, t_ast_node *out); return (&val->suffixes_redirections);
t_error build_sym_list(t_parse_node self, t_const_str input, t_ast_node *out); me_abort("invalid index for i in _get_vec_command");
t_error build_sym_negated_command(t_parse_node self, t_const_str input, t_ast_node *out); return (NULL);
t_error build_sym_program(t_parse_node self, t_const_str input, t_ast_node *out); }
t_error build_sym_raw_string(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_string_content(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_subshell(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_variable_assignment(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_word(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_compound_statement(t_parse_node self, t_const_str input, t_ast_node *out);
/* FUNCTION THAT ARE NOT DONE */
t_error build_sym_arithmetic_binary_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_expansion(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_literal(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_parenthesized_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_postfix_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_ternary_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_unary_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_case_item(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_case_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_command_substitution(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_do_group(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_elif_clause(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_else_clause(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_expansion(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_expansion_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_expansion_regex(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_extglob_pattern(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_file_descriptor(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_file_redirect(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_for_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_function_definition(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_body(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_content(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_end(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_redirect(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_start(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_if_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_number(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_pipeline(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_redirected_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_regex(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_simple_expansion(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_simple_heredoc_body(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_while_statement(t_parse_node self, t_const_str input, t_ast_node *out);
#include <stdio.h>
void _add_negation(t_ast_node *node) void _add_negation(t_ast_node *node)
{ {
@ -459,6 +414,39 @@ void _add_negation(t_ast_node *node)
(*node)->data.variable_assignment.bang = true; (*node)->data.variable_assignment.bang = true;
} }
void _append_redirection(t_ast_node node, t_ast_node redirection)
{
t_vec_ast *vec;
vec = NULL;
if (!(redirection->kind == AST_FILE_REDIRECTION || redirection->kind == AST_HEREDOC_REDIRECTION))
return (ast_free(redirection));
if (node->kind == AST_CASE)
vec = &node->data.case_.suffixes_redirections;
if (node->kind == AST_COMMAND)
vec = &node->data.command.suffixes_redirections;
if (node->kind == AST_COMPOUND_STATEMENT)
vec = &node->data.compound_statement.suffixes_redirections;
if (node->kind == AST_FOR)
vec = &node->data.for_.suffixes_redirections;
if (node->kind == AST_IF)
vec = &node->data.if_.suffixes_redirections;
if (node->kind == AST_LIST)
vec = &node->data.list.suffixes_redirections;
if (node->kind == AST_PIPELINE)
vec = &node->data.pipeline.suffixes_redirections;
if (node->kind == AST_SUBSHELL)
vec = &node->data.subshell.suffixes_redirections;
if (node->kind == AST_UNTIL)
vec = &node->data.until.suffixes_redirections;
if (node->kind == AST_WHILE)
vec = &node->data.while_.suffixes_redirections;
if (vec != NULL)
vec_ast_push(vec, redirection);
else
ast_free(redirection);
}
t_ast_terminator_kind _select_term(t_const_str input, t_usize term_start_byte, t_usize term_end_byte) t_ast_terminator_kind _select_term(t_const_str input, t_usize term_start_byte, t_usize term_end_byte)
{ {
char term_start; char term_start;
@ -480,6 +468,235 @@ t_ast_terminator_kind _select_term(t_const_str input, t_usize term_start_byte, t
return (AST_TERM_NONE); return (AST_TERM_NONE);
} }
t_error ast_from_node(t_parse_node node, t_const_str input, t_ast_node *out);
/* FUNCTION THAT ARE DONE */
t_error build_sym__bare_dollar(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_command(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_command_name(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_comment(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_compound_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_list(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_negated_command(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_pipeline(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_program(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_raw_string(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_redirected_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_string_content(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_subshell(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_variable_assignment(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_while_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_word(t_parse_node self, t_const_str input, t_ast_node *out);
/* FUNCTION THAT ARE NOT DONE */
t_error build_sym_arithmetic_binary_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_literal(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_parenthesized_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_postfix_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_ternary_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_unary_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_case_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_case_item(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_if_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_elif_clause(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_else_clause(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_for_statement(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_function_definition(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_arithmetic_expansion(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_command_substitution(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_expansion(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_expansion_expression(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_expansion_regex(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_simple_expansion(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_redirect(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_file_redirect(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_extglob_pattern(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_file_descriptor(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_number(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_regex(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_simple_heredoc_body(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_body(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_content(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_end(t_parse_node self, t_const_str input, t_ast_node *out);
t_error build_sym_heredoc_start(t_parse_node self, t_const_str input, t_ast_node *out);
#include <stdio.h>
t_error build_sym_pipeline(t_parse_node self, t_const_str input, t_ast_node *out)
{
t_ast_node ret;
t_ast_node tmp;
t_usize i;
(void)(out);
(void)(input);
(void)(self);
if (out == NULL)
return (ERROR);
if (ts_node_grammar_symbol(self) != sym_pipeline)
return (ERROR);
ret = ast_alloc(AST_PIPELINE);
i = 0;
while (i < ts_node_named_child_count(self))
{
if (ast_from_node(ts_node_named_child(self, i), input, &tmp))
return (ast_free(ret), ERROR);
vec_ast_push(&ret->data.pipeline.statements, tmp);
i++;
}
return (*out = ret, NO_ERROR);
}
t_error build_sym_do_group(t_parse_node self, t_const_str input, t_ast_node *out)
{
t_ast_node ret;
t_ast_node tmp;
t_usize i;
t_ast_terminator_kind term;
(void)(out);
(void)(input);
(void)(self);
if (out == NULL)
return (ERROR);
if (ts_node_grammar_symbol(self) != sym_do_group)
return (ERROR);
ret = ast_alloc(AST_COMPOUND_STATEMENT);
i = 0;
while (i < ts_node_named_child_count(self))
{
if (ts_node_field_id_for_child(self, i) == field_terminator && ret->data.compound_statement.body.len != 0)
{
term = _select_term(input, ts_node_start_byte(ts_node_named_child(self, i)), ts_node_end_byte(ts_node_named_child(self, i)));
ast_set_term(&ret->data.compound_statement.body.buffer[ret->data.compound_statement.body.len - 1], term);
}
else
{
if (ast_from_node(ts_node_named_child(self, i), input, &tmp))
return (ast_free(ret), ERROR);
vec_ast_push(&ret->data.compound_statement.body, tmp);
}
i++;
}
return (*out = ret, NO_ERROR);
}
t_error build_sym_subshell(t_parse_node self, t_const_str input, t_ast_node *out)
{
t_ast_node ret;
t_ast_node tmp;
t_usize i;
t_ast_terminator_kind term;
(void)(out);
(void)(input);
(void)(self);
if (out == NULL)
return (ERROR);
if (ts_node_grammar_symbol(self) != sym_subshell)
return (ERROR);
ret = ast_alloc(AST_SUBSHELL);
// ret->data.subshell.body
i = 0;
while (i < ts_node_named_child_count(self))
{
if (ts_node_field_id_for_child(self, i) == field_terminator && ret->data.subshell.body.len != 0)
{
term = _select_term(input, ts_node_start_byte(ts_node_named_child(self, i)), ts_node_end_byte(ts_node_named_child(self, i)));
ast_set_term(&ret->data.subshell.body.buffer[ret->data.subshell.body.len - 1], term);
}
else
{
if (ast_from_node(ts_node_named_child(self, i), input, &tmp))
return (ast_free(ret), ERROR);
vec_ast_push(&ret->data.subshell.body, tmp);
}
i++;
}
return (*out = ret, NO_ERROR);
}
t_error build_sym_while_statement(t_parse_node self, t_const_str input, t_ast_node *out)
{
t_ast_node ret;
t_ast_node tmp;
t_usize i;
t_parse_node child;
t_ast_terminator_kind term;
(void)(out);
(void)(input);
(void)(self);
if (out == NULL)
return (ERROR);
if (ts_node_grammar_symbol(self) != sym_while_statement)
return (ERROR);
if (ts_node_named_child_count(self) != 1)
return (ERROR);
i = 0;
if (ts_node_grammar_symbol(ts_node_child(self, 0)) == anon_sym_until)
ret = ast_alloc(AST_UNTIL);
else if (ts_node_grammar_symbol(ts_node_child(self, 0)) == anon_sym_while)
ret = ast_alloc(AST_WHILE);
else
return (ERROR);
while (i < ts_node_named_child_count(self))
{
child = ts_node_named_child(self, i);
if (ast_from_node(child, input, &tmp))
return (ast_free(ret), ERROR);
if (ts_node_field_id_for_child(self, i) == field_stmt)
vec_ast_push(&ret->data.while_.condition, tmp);
if (ts_node_field_id_for_child(self, i) == field_terminator)
{
term = _select_term(input, ts_node_start_byte(ts_node_named_child(self, i)), ts_node_end_byte(ts_node_named_child(self, i)));
ast_set_term(&ret->data.while_.condition.buffer[ret->data.while_.condition.len - 1], term);
}
if (ts_node_field_id_for_child(self, i) == field_body)
vec_ast_push(&ret->data.while_.do_, tmp);
i++;
}
return (*out = ret, NO_ERROR);
}
t_error build_sym_redirected_statement(t_parse_node self, t_const_str input, t_ast_node *out)
{
t_ast_node ret;
t_ast_node tmp;
t_usize i;
(void)(out);
(void)(input);
(void)(self);
if (out == NULL)
return (ERROR);
if (ts_node_grammar_symbol(self) != sym_negated_command)
return (ERROR);
if (ts_node_named_child_count(self) != 1)
return (ERROR);
i = 0;
if (ast_from_node(ts_node_named_child(self, i++), input, &ret))
return (ERROR);
while (i < ts_node_named_child_count(self))
{
if (ast_from_node(ts_node_named_child(self, i++), input, &tmp))
return (ast_free(ret), ERROR);
_append_redirection(ret, tmp);
}
return (*out = ret, NO_ERROR);
}
t_error build_sym_negated_command(t_parse_node self, t_const_str input, t_ast_node *out) t_error build_sym_negated_command(t_parse_node self, t_const_str input, t_ast_node *out)
{ {
@ -537,41 +754,41 @@ t_error build_sym_compound_statement(t_parse_node self, t_const_str input, t_ast
return (*out = ret, NO_ERROR); return (*out = ret, NO_ERROR);
} }
t_error build_sym_subshell(t_parse_node self, t_const_str input, t_ast_node *out) // t_error build_sym_subshell(t_parse_node self, t_const_str input, t_ast_node *out)
{ // {
t_ast_node ret; // t_ast_node ret;
t_ast_node tmp; // t_ast_node tmp;
t_usize i; // t_usize i;
t_ast_terminator_kind term; // t_ast_terminator_kind term;
//
(void)(out); // (void)(out);
(void)(input); // (void)(input);
(void)(self); // (void)(self);
if (out == NULL) // if (out == NULL)
return (ERROR); // return (ERROR);
if (ts_node_grammar_symbol(self) != sym_subshell) // if (ts_node_grammar_symbol(self) != sym_subshell)
return (ERROR); // return (ERROR);
ret = ast_alloc(AST_SUBSHELL); // ret = ast_alloc(AST_SUBSHELL);
// ret->data.subshell.body // // ret->data.subshell.body
i = 0; // i = 0;
while (i < ts_node_named_child_count(self)) // while (i < ts_node_named_child_count(self))
{ // {
if (ts_node_field_id_for_child(self, i) == field_terminator && ret->data.subshell.body.len != 0) // if (ts_node_field_id_for_child(self, i) == field_terminator && ret->data.subshell.body.len != 0)
{ // {
term = _select_term(input, ts_node_start_byte(ts_node_named_child(self, i)), ts_node_end_byte(ts_node_named_child(self, i))); // term = _select_term(input, ts_node_start_byte(ts_node_named_child(self, i)), ts_node_end_byte(ts_node_named_child(self, i)));
//
ast_set_term(&ret->data.subshell.body.buffer[ret->data.subshell.body.len - 1], term); // ast_set_term(&ret->data.subshell.body.buffer[ret->data.subshell.body.len - 1], term);
} // }
else // else
{ // {
if (ast_from_node(ts_node_named_child(self, i), input, &tmp)) // if (ast_from_node(ts_node_named_child(self, i), input, &tmp))
return (ast_free(ret), ERROR); // return (ast_free(ret), ERROR);
vec_ast_push(&ret->data.subshell.body, tmp); // vec_ast_push(&ret->data.subshell.body, tmp);
} // }
i++; // i++;
} // }
return (*out = ret, NO_ERROR); // return (*out = ret, NO_ERROR);
} // }
t_error build_sym_comment(t_parse_node self, t_const_str input, t_ast_node *out) t_error build_sym_comment(t_parse_node self, t_const_str input, t_ast_node *out)
{ {
(void)(out); (void)(out);
@ -762,47 +979,6 @@ t_error build_sym_command_name(t_parse_node self, t_const_str input, t_ast_node
return (ast_from_node(ts_node_named_child(self, 0), input, out)); return (ast_from_node(ts_node_named_child(self, 0), input, out));
} }
t_vec_ast *_vec_command(t_ast_command *val, t_usize i)
{
if (i == 0)
return (&val->prefixes);
if (i == 1)
return (&val->cmd_word);
if (i == 2)
return (&val->suffixes_redirections);
me_abort("invalid index for i in _get_vec_command");
return (NULL);
}
void _append_redirection(t_ast_node node, t_ast_node redirection)
{
t_vec_ast *vec;
vec = NULL;
if (node->kind == AST_CASE)
vec = &node->data.case_.suffixes_redirections;
if (node->kind == AST_COMMAND)
vec = &node->data.command.suffixes_redirections;
if (node->kind == AST_COMPOUND_STATEMENT)
vec = &node->data.compound_statement.suffixes_redirections;
if (node->kind == AST_FOR)
vec = &node->data.for_.suffixes_redirections;
if (node->kind == AST_IF)
vec = &node->data.if_.suffixes_redirections;
if (node->kind == AST_LIST)
vec = &node->data.list.suffixes_redirections;
if (node->kind == AST_PIPELINE)
vec = &node->data.pipeline.suffixes_redirections;
if (node->kind == AST_SUBSHELL)
vec = &node->data.subshell.suffixes_redirections;
if (node->kind == AST_UNTIL)
vec = &node->data.until.suffixes_redirections;
if (node->kind == AST_WHILE)
vec = &node->data.while_.suffixes_redirections;
if (vec)
vec_ast_push(vec, redirection);
}
t_error build_sym_word(t_parse_node self, t_const_str input, t_ast_node *out) t_error build_sym_word(t_parse_node self, t_const_str input, t_ast_node *out)
{ {
t_ast_node ret; t_ast_node ret;

1
parser/nsrc/node.c
View file

@ -710,7 +710,6 @@ recur:
return ts_node__null(); return ts_node__null();
} }
static inline TSFieldId ts_node__field_id_from_language(TSNode self, uint32_t structural_child_index) static inline TSFieldId ts_node__field_id_from_language(TSNode self, uint32_t structural_child_index)
{ {
const TSFieldMapEntry *field_map, *field_map_end; const TSFieldMapEntry *field_map, *field_map_end;

1
parser/nsrc/scanner.c
View file

@ -250,7 +250,6 @@ static inline bool scan_bare_dollar(TSLexer *lexer)
while (iswspace(lexer->lookahead) && lexer->lookahead != '\n' && !lexer->eof(lexer)) while (iswspace(lexer->lookahead) && lexer->lookahead != '\n' && !lexer->eof(lexer))
skip(lexer); skip(lexer);
if (lexer->lookahead == '$') if (lexer->lookahead == '$')
{ {
advance(lexer); advance(lexer);

3
sources/node/node.c
View file

@ -6,7 +6,7 @@
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */ /* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2024/04/28 18:36:40 by maiboyer #+# #+# */ /* Created: 2024/04/28 18:36:40 by maiboyer #+# #+# */
/* Updated: 2024/06/19 13:38:50 by maiboyer ### ########.fr */ /* Updated: 2024/06/29 16:08:54 by maiboyer ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@ -52,6 +52,7 @@ t_node build_node(t_parse_node curr, t_const_str input)
out.input = input; out.input = input;
out.single_str = NULL; out.single_str = NULL;
out.field_str = NULL; out.field_str = NULL;
out.field = 0;
out.childs_count = ts_node_named_child_count(curr); out.childs_count = ts_node_named_child_count(curr);
if (out.childs_count == 0) if (out.childs_count == 0)
out.childs = NULL; out.childs = NULL;