diff options
Diffstat (limited to 'src/eval')
| -rw-r--r-- | src/eval/eval.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/eval/eval.c b/src/eval/eval.c new file mode 100644 index 0000000..a831237 --- /dev/null +++ b/src/eval/eval.c @@ -0,0 +1,82 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* eval.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: charles <charles@student.42.fr> +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2020/04/01 17:05:21 by charles #+# #+# */ +/* Updated: 2020/06/18 13:16:34 by nahaddac ### ########.fr */ +/* */ +/* ************************************************************************** */ + +/* +** \file eval.c +** \brief Evaluation of an AST +*/ + +/* #include "eval.h" */ + +/* #<{(| */ +/* ** \brief Evaluate a line */ +/* ** \param state State of the evaluation */ +/* ** \param line Line to evaluate */ +/* ** \return Last Executed command status or -1 on error */ +/* |)}># */ +/* */ +/* static int eval_line(void *param) */ +/* { */ +/* int status; */ +/* t_eval_state *state; */ +/* t_line *line; */ +/* int fd_in; */ +/* int fd_out; */ +/* */ +/* state = ((t_fork_param_line*)param)->state; */ +/* line = ((t_fork_param_line*)param)->line; */ +/* fd_in = ((t_fork_param_line*)param)->fd_in; */ +/* fd_out = ((t_fork_param_line*)param)->fd_out; */ +/* */ +/* #<{(| if (line->right == NULL) |)}># */ +/* #<{(| return (eval(state, line->left)); |)}># */ +/* */ +/* #<{(| if (line->sep == SEP_PIPE) |)}># */ +/* #<{(| pipe(state->p); |)}># */ +/* */ +/* if (line->left->tag == AST_LINE) */ +/* { */ +/* return (fork_wrap(fd_in, fd_out, param, &eval_line)); */ +/* } */ +/* if ((status = eval(fd_in, fd_out, state, line->left)) == -1) */ +/* return (-1); */ +/* if ((line->sep == SEP_AND && status != 0) || */ +/* (line->sep == SEP_OR && status == 0)) */ +/* return (status); */ +/* */ +/* return (eval(fd_in, fd_out, state, line->right)); */ +/* } */ +/* */ +/* #<{(| */ +/* ** \brief Evaluate an AST */ +/* ** \param state State of the evaluation */ +/* ** \param ast Abstract syntax tree to evaluate */ +/* ** \return Last command status or -1 on error */ +/* |)}># */ +/* */ +/* int eval(int fd_in, int fd_out, t_eval_state *state, t_ast *ast) */ +/* { */ +/* t_fork_param_line param; */ +/* */ +/* errno = 0; */ +/* if (ast->tag == TAG_LINE) */ +/* { */ +/* param.state = state; */ +/* param.line = &ast->line; */ +/* param.fd_in = fd_in; */ +/* param.fd_out = fd_out; */ +/* return (eval_line(¶m)); */ +/* } */ +/* if (ast->tag == TAG_CMD) */ +/* return (eval_cmd(fd_in, fd_out, state, &ast->cmd)); */ +/* return (-1); */ +/* } */ |