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Diffstat (limited to 'src/parser/parser.c')
-rw-r--r--src/parser/parser.c74
1 files changed, 38 insertions, 36 deletions
diff --git a/src/parser/parser.c b/src/parser/parser.c
index cac820c..8d5a0aa 100644
--- a/src/parser/parser.c
+++ b/src/parser/parser.c
@@ -6,7 +6,7 @@
/* By: nahaddac <nahaddac@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/06/17 18:09:04 by nahaddac #+# #+# */
-/* Updated: 2020/10/09 13:58:05 by cacharle ### ########.fr */
+/* Updated: 2020/10/09 14:30:29 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
@@ -15,8 +15,8 @@
** \brief Parser
*/
-#include "parser.h"
#include "minishell.h"
+#include "parser.h"
static char *g_sep_str_lookup[] = {
[TAG_END] = ";",
@@ -24,10 +24,10 @@ static char *g_sep_str_lookup[] = {
[TAG_OR] = "||",
[TAG_PIPE] = "|",
[TAG_REDIR_IN] = "<",
- [TAG_REDIR_OUT] = ">",
[TAG_REDIR_APPEND] = ">>",
- [TAG_PARENT_OPEN] = "(",
[TAG_PARENT_CLOSE] = ")",
+ [TAG_REDIR_OUT] = ">",
+ [TAG_PARENT_OPEN] = "(",
};
/*
@@ -38,18 +38,17 @@ static char *g_sep_str_lookup[] = {
t_parsed *parse_redir(t_tok_lst *input, t_tok_lst **redirs)
{
+ t_parsed *ret;
+
tok_lst_push_back(redirs, tok_lst_uncons(&input));
- // FIXME big condition could be avoided with lexer not putting STICK
- // if the next tokens isn't a string
- while (input != NULL
- && input->tag & TAG_IS_STR && input->tag & TAG_STICK
- && input->next != NULL && input->next->tag & TAG_IS_STR)
+ while (input != NULL && input->tag & TAG_IS_STR && input->tag & TAG_STICK &&
+ input->next != NULL && input->next->tag & TAG_IS_STR)
tok_lst_push_back(redirs, tok_lst_uncons(&input));
if (input == NULL)
return (parsed_error("syntax error near unexpected token `newline'"));
if (!(input->tag & TAG_IS_STR))
{
- t_parsed *ret = parsed_error("syntax error near unexpected token `%s'", input->content);
+ ret = parsed_error("syntax error near unexpected token `%s'", input->content);
tok_lst_destroy(&input, free);
return (ret);
}
@@ -64,9 +63,9 @@ t_parsed *parse_cmd(t_tok_lst *input)
if (input->tag & TAG_IS_SEP || input->tag == TAG_PIPE || input->tag == TAG_PARENT_CLOSE)
{
- t_parsed *ret = parsed_error("syntax error near unexpected token `%s'", input->content);
+ tmp = parsed_error("syntax error near unexpected token `%s'", input->content);
tok_lst_destroy(&input, free);
- return (ret);
+ return (tmp);
}
if ((ast = ast_new(AST_CMD)) == NULL)
return (NULL);
@@ -87,7 +86,7 @@ t_parsed *parse_cmd(t_tok_lst *input)
free(tmp);
}
else
- break;
+ break ;
}
return (parsed_new(ast, input));
}
@@ -97,10 +96,10 @@ t_parsed *parse_pipeline(t_tok_lst *input)
t_parsed *expr;
t_parsed *tail;
t_ast *expr_ast;
+ t_ast *pipeline_ast;
expr = parse_expr(input);
- if (expr == NULL || expr->syntax_error ||
- expr->rest == NULL || expr->rest->tag != TAG_PIPE)
+ if (expr == NULL || expr->syntax_error || expr->rest == NULL || expr->rest->tag != TAG_PIPE)
return (expr);
tok_lst_pop_front(&expr->rest, free);
if (expr->rest == NULL)
@@ -118,7 +117,6 @@ t_parsed *parse_pipeline(t_tok_lst *input)
}
expr_ast = expr->ast;
free(expr);
- t_ast *pipeline_ast;
if (tail->ast->tag == AST_CMD || tail->ast->tag == AST_PARENT)
{
pipeline_ast = ast_new(AST_PIPELINE);
@@ -156,8 +154,8 @@ t_parsed *parse_op(t_tok_lst *input)
ast_destroy(left->ast);
tok_lst_destroy(&left->rest, free);
free(left);
- return (parsed_error("syntax error near unexpected token `%s'",
- g_sep_str_lookup[sep_tag]));
+ return (parsed_error(
+ "syntax error near unexpected token `%s'", g_sep_str_lookup[sep_tag]));
}
tok_lst_pop_front(&input, free);
if (input == NULL && sep_tag == TAG_END)
@@ -172,7 +170,7 @@ t_parsed *parse_op(t_tok_lst *input)
return (parsed_error("syntax error expected token"));
}
right = parse_op(input);
- if (right == NULL || right->syntax_error)
+ if (right == NULL || right->syntax_error)
{
ast_destroy(left->ast);
free(left);
@@ -196,19 +194,19 @@ t_parsed *parse_op(t_tok_lst *input)
t_parsed *parse_expr(t_tok_lst *input)
{
- t_parsed *parsed;
- t_parsed *tmp;
+ t_parsed *parsed;
+ t_parsed *tmp;
t_ast *ast;
- if (input->tag & TAG_PARENT_OPEN)
- {
+ if (input->tag & TAG_PARENT_OPEN)
+ {
tok_lst_pop_front(&input, free);
if (input == NULL)
return (parsed_error("syntax error expected token"));
parsed = parse_op(input);
- if (parsed == NULL || parsed->syntax_error)
+ if (parsed == NULL || parsed->syntax_error)
return (parsed);
- input = parsed->rest;
+ input = parsed->rest;
if (input == NULL || !(input->tag & TAG_PARENT_CLOSE))
{
ast_destroy(parsed->ast);
@@ -216,10 +214,10 @@ t_parsed *parse_expr(t_tok_lst *input)
return (parsed_error("syntax error expected token"));
}
tok_lst_pop_front(&input, free);
- if ((ast = ast_new(AST_PARENT)) == NULL)
+ if ((ast = ast_new(AST_PARENT)) == NULL)
return (NULL);
- ast->parent_ast = parsed->ast;
- parsed->ast = ast;
+ ast->parent_ast = parsed->ast;
+ parsed->ast = ast;
while (input != NULL && input->tag & TAG_IS_REDIR)
{
tmp = parse_redir(input, &parsed->ast->redirs);
@@ -228,26 +226,30 @@ t_parsed *parse_expr(t_tok_lst *input)
input = tmp->rest;
free(tmp);
}
- parsed->rest = input;
- return (parsed);
- }
- return (parse_cmd(input));
+ parsed->rest = input;
+ return (parsed);
+ }
+ return (parse_cmd(input));
}
t_parsed *parse(t_tok_lst *input)
{
+ t_parsed *parsed;
+ t_parsed *ret;
+
if (input == NULL)
return (NULL);
- t_parsed *parsed = parse_op(input);
+ parsed = parse_op(input);
if (parsed == NULL || parsed->syntax_error)
- return parsed;
+ return (parsed);
if (parsed->rest != NULL)
{
- t_parsed *ret = parsed_error("syntax error near unexpected token `%s'", parsed->rest->content);
+ ret = parsed_error(
+ "syntax error near unexpected token `%s'", parsed->rest->content);
tok_lst_destroy(&parsed->rest, free);
ast_destroy(parsed->ast);
free(parsed);
- return ret;
+ return (ret);
}
return (parsed);
}
generated by cgit (git 2.34.1) at 2026-05-16 07:02:13 +0000