guillm/42sh
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

style(parser): refactor parse_command

Browse source
This commit is contained in:
matteo 2026-01-28 12:21:57 +01:00
parent 51fc8a3330
commit efb0a6f148
1 changed files with 50 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

22
src/parser/grammar_basic.c
View file

@ -152,14 +152,15 @@ struct ast *parse_pipeline(struct lexer_context *ctx)
struct ast *parse_command(struct lexer_context *ctx)
{
struct token *token = PEEK_TOKEN();
struct ast *result = NULL;
if (is_first(*token, RULE_SIMPLE_COMMAND))
{
return parse_simple_command(ctx);
result = parse_simple_command(ctx);
}
else if (is_first(*token, RULE_SHELL_COMMAND))
{
return parse_shell_command(ctx);
parse_shell_command(ctx);
}
else
{
@ -201,13 +202,17 @@ struct ast *parse_simple_command(struct lexer_context *ctx)
}
}
if (token->type != TOKEN_WORD && !has_prefix)
if (token->type != TOKEN_WORD)
{
if (!has_prefix)
{
perror("Expected a command but got a different token type");
return err_simple_command(command_elements, redirections);
}
// we can have only prefixes askip
// else : only prefixes
}
else
{
if (token->type == TOKEN_WORD)
{
char *command = strdup(token->data);
@ -234,8 +239,7 @@ struct ast *parse_simple_command(struct lexer_context *ctx)
// TODO test this fix for the memory leaks
char *word = strdup(element_word->word);
ast_free(element_word);
command_elements =
list_append(command_elements, word);
command_elements = list_append(command_elements, word);
// end of fix
}
else if (ast_is_redir(element))
@ -245,7 +249,8 @@ struct ast *parse_simple_command(struct lexer_context *ctx)
}
else
{
perror("Internal error: unexpected return value from parse_element "
perror("Internal error: unexpected return value from "
"parse_element "
"in parse_simple_command");
return err_simple_command(command_elements, redirections);
}
@ -253,6 +258,7 @@ struct ast *parse_simple_command(struct lexer_context *ctx)
// Forward
token = PEEK_TOKEN();
}
}
// Result
struct ast *result = ast_create_command(command_elements, redirections);