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/*
** ast.h for 42sh
**
** Made by Seblu
** Login <seblu@epita.fr>
**
** Started on Sun Jul 30 04:40:03 2006 Seblu
*/
#ifndef AST_H_
# define AST_H_
# include <sys/types.h>
# include <errno.h>
# include <stdlib.h>
# include <assert.h>
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/*
** If ast node
*/
typedef struct
{
ts_ast_node *cond;
ts_ast_node *cond_true;
ts_ast_node *cond_false;
} ts_if_node;
/*
** For ast node
*/
typedef struct
{
char *name;
ts_ast_node *values;
ts_ast_node *exec;
} ts_for_node;
/*
** Case ast node
*/
typedef struct
{
char *word;
//FIXME
struct s_case_item **items;
} ts_case_node;
/*
** While ast node
*/
typedef struct
{
ts_ast_node *cond;
ts_ast_node *exec;
} ts_while_node;
/*
** Enumerate different type of redirection
*/
typedef enum
{
R_LESS, /* < */
R_LESSAND, /* <& */
R_GREAT, /* > */
R_GREATAND, /* >& */
R_DGREAT, /* >> */
R_LESSGREAT, /* <> */
R_CLOBBER, /* >| */
R_DLESS, /* << */
R_DLESSDASH /* <<- */
} te_redir_type;
/*
** Redirection ast node
*/
typedef struct
{
te_redir_type type;
int fd;
char *string;
} ts_redir_node;
/*
** Command ast node
*/
typedef struct
{
char **argv;
char **prefix;
} ts_cmd_node;
/*
** Binary ast node
** Generic type, it's a contener !
** T_PIPE, T_SEP_* , T_AND, T_OR : binary operator
** T_BANG : unary operator but ts_bin_op with right pointer is always NULL
*/
typedef struct
{
ts_ast_node *left;
ts_ast_node *right;
} ts_bin_node;
/*
** Subshell ast node
*/
typedef struct
{
ts_ast_node *head;
} ts_subshell_node;
/*
** Funcdec node
*/
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{
char *name;
ts_ast_node *body;
} ts_funcdec_node;
/*
** Enumerate all node type
*/
typedef enum
{
T_IF,
T_FOR,
T_WHILE,
T_UNTIL,
T_CMD,
T_AND,
T_OR,
T_SUBSHELL,
T_FUNCDEC,
T_BANG,
T_PIPE,
T_SEP_AND,
T_SEP_SEMICOMMA,
T_CASE,
T_CASE_LIST,
T_LIST,
T_CL,
T_CASE_ITEM,
T_ITEM,
T_LINE,
T_WL,
T_END
} te_node_type;
/*
** This is a type for a node item
*/
typedef union
{
ts_if_node node_if;
ts_for_node node_for;
ts_case_node node_case;
ts_while_node node_while;
ts_while_node node_until;
ts_cmd_node node_cmd;
ts_subshell_node node_subshell;
ts_funcdec_node node_funcdec;
ts_bin_node node_bang;
ts_bin_node node_pipe;
ts_bin_node node_sep_semicomma;
ts_bin_node node_sep_and;
/* ts_case_item node_case_item; */
/* ts_wordlist node_wl; */
/* ts_case_list node_case_list; */
} tu_node_item;
/*
** Generic ast node type
*/
{
te_node_type type;
tu_node_item node;
};
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/* /\** */
/* ** structure wordlist ex : for var in wordlist do */
/* ** word : word */
/* ** next : next word finally Sexy NULL */
/* *\/ */
/* struct s_wordlist */
/* { */
/* char *word; */
/* struct s_wordlist *next; */
/* }; */
/* struct s_case_item */
/* { */
/* char **patterns; */
/* int allocated; */
/* int pos; */
/* }; */
/* struct s_item */
/* { */
/* struct s_wordlist *pl; */
/* struct s_ast *cmd_list; */
/* }; */
/* /\** */
/* ** temporary structure */
/* ** which contains prefix and */
/* ** suffix command informations */
/* ** argv word or assigment words terminated by NULL */
/* ** redirs redirection pointer */
/* ** pos position in argv array */
/* ** nb_arg_alloc positions allocated */
/* *\/ */
/* struct s_cmd_opt */
/* { */
/* char **argv; */
/* struct s_redir *redirs; */
/* int pos; */
/* int nb_arg_alloc; */
/* }; */
/* /\** */
/* ** create temporary structure */
/* ** in order to get prefix and */
/* ** suffix informations */
/* *\/ */
/* struct s_cmd_opt *tmp_create_cmdopt(struct s_cmd_opt *opt, */
/* struct s_redir *redir, */
/* char *arg); */
/* /\** */
/* ** add redirection to temporary */
/* ** structure s_redir */
/* *\/ */
/* struct s_redir *tmp_add_redir(struct s_redir *base, struct s_redir *nelt); */
/* /\** */
/* ** create temporary structure s_redir */
/* *\/ */
/* struct s_redir *tmp_create_redir(enum e_redir type, */
/* char *filename, */
/* int fd, */
/* struct s_redir *redir); */
/* /\* */
/* ** PLEASE NOTE */
/* ** Every time, any argument given so this functions must be on the heap, */
/* ** they are not copied. Don't forget to dup string, for function create_cmd, */
/* ** function add_redir and function create_for */
/* *\/ */
/* /\*! */
/* ** Create an and node */
/* ** */
/* ** @param lhs left hand side */
/* ** @param rhs right hand side */
/* ** */
/* ** @return new ast node */
/* *\/ */
/* struct s_ast *ast_create_and(struct s_ast *lhs, struct s_ast *rhs); */
/* /\*! */
/* ** Create an or node */
/* ** */
/* ** @param lhs left hand side */
/* ** @param rhs right hand side */
/* ** */
/* ** @return new ast node */
/* *\/ */
/* struct s_ast *ast_create_or(struct s_ast *lhs, struct s_ast *rhs); */
/* struct s_ast *ast_create_case_clause(char *word, */
/* struct s_ast *case_list); */
/* struct s_ast *ast_create_if(struct s_ast *cond, */
/* struct s_ast *positive, */
/* struct s_ast *negative); */
/* struct s_ast *ast_create_funcdec(char *name, struct s_ast *body); */
/* struct s_ast *ast_create_subshell(struct s_ast *cmd); */
/* struct s_ast *ast_create_for(char *varname, */
/* struct s_ast *value, */
/* struct s_ast *exec); */
/* /\** */
/* ** create cmd node */
/* *\/ */
/* struct s_ast *ast_create_cmd(struct s_cmd_opt *prefix, */
/* char *cmd, */
/* struct s_cmd_opt *suffix); */
/* /\* struct s_ast *ast_create_list(struct s_ast **item); *\/ */
/* struct s_ast *ast_create_until(struct s_ast *cond, */
/* struct s_ast *exec); */
/* struct s_ast *ast_create_while(struct s_ast *cond, */
/* struct s_ast *exec); */
/* /\** */
/* ** create pipe node */
/* *\/ */
/* struct s_ast *ast_create_pipe(struct s_ast *cmd1, */
/* struct s_ast *cmd2); */
/* /\** */
/* ** create shell structure */
/* *\/ */
/* struct s_42sh *ast_create_ast(struct s_42sh *shell, */
/* struct s_ast *ast); */
/* struct s_ast *ast_create_patterns(char *word, struct s_ast *case_item); */
/* struct s_ast *ast_create_case_list(struct s_ast *item, */
/* struct s_ast *case_list); */
/* struct s_ast *ast_create_wordlist(struct s_ast *wl, */
/* char *w); */
/* /\** */
/* ** change ast type : PIPE -> BANG_PIPE and CMD -> BANG_CMD */
/* *\/ */
/* struct s_ast *ast_create_bang(struct s_ast *ast); */
/* struct s_ast *ast_create_sep_op(struct s_ast *cmd1, */
/* enum e_type sep_op, */
/* struct s_ast *cmd2); */
/* /\* void ast_destruct_list(struct s_ast *node); *\/ */
/* void ast_destruct_cmd(struct s_ast *node); */
/* void ast_destruct_pipe(struct s_ast *node); */
/* void ast_destruct_redir(struct s_redir *red); */
/* /\* void ast_print(struct s_ast *ast); *\/ */
/* void ast_destruct_sep_op(struct s_ast *node); */
/* void ast_destruct_for(struct s_ast *node); */
/* void ast_destruct_until(struct s_ast *node); */
/* void ast_destruct_while(struct s_ast *node); */
/* void ast_destruct_if(struct s_ast *node); */
/* void ast_destruct(struct s_ast *node); */
/* void ast_destruct_bang(struct s_ast *node); */
/* void ast_destruct_wordlist(struct s_ast *node); */
/* void ast_destruct_case(struct s_ast *node); */
/* /\*! */
/* ** Destruct an and node */
/* ** */
/* ** @param node head of node to destruct */
/* *\/ */
/* void ast_destruct_and(struct s_ast *node); */
/* /\*! */
/* ** Destruct an or node */
/* ** */
/* ** @param node head of node to destruct */
/* *\/ */
/* void ast_destruct_or(struct s_ast *node); */
/* void ast_destruct_subshell(struct s_ast *node); */