add: added projectsHEADmain

1 files changed, 128 insertions, 0 deletions

diff --git a/42sh/src/parser/parser_lists.c b/42sh/src/parser/parser_lists.c
new file mode 100644
index 0000000..4b5e204
--- /dev/null
+++ b/42sh/src/parser/parser_lists.c
@@ -0,0 +1,128 @@
+#include <err.h>
+#include <stdio.h>
+
+#include "parser/parser_functions.h"
+#include "parser/parser_utils.h"
+
+struct ast *parse_list(struct lexer *lexer, enum parser_state *state)
+{
+    struct ast *node = parse_and_or(lexer, state);
+    struct ast *ast_list = NULL;
+
+    // Who forgot to check that node can be NULL, I sure did
+    if (node == NULL)
+    {
+        QUICK_CLEANUP
+    }
+
+    struct token next = lexer_peek(lexer);
+
+    size_t i = 0;
+
+    if (next.type == TOKEN_SEMICOLON)
+    {
+        ast_list = ast_create(AST_LIST);
+
+        if (ast_list == NULL)
+        {
+            cleanup(node, state);
+            return NULL;
+        }
+
+        set_left(ast_list, node);
+        i++;
+    }
+
+    // If we enter this loop, this means we have a list of more than 1 element
+    while (next.type == TOKEN_SEMICOLON)
+    {
+        lexer_pop(lexer);
+        next = lexer_peek(lexer);
+
+        // Case where we have only one ';', meaning it is the end of the list
+        if (next.type == TOKEN_EOF || next.type == TOKEN_NEWLINE)
+        {
+            // set_right(ast_list, NULL);
+            return ast_list;
+        }
+
+        struct ast *right = parse_and_or(lexer, state);
+        set_i(ast_list, right, i);
+        i++;
+
+        // Was checking if right was NULL, but in that case state is ERROR
+        // and error_check will catch it
+
+        next = lexer_peek(lexer);
+        if (error_check(ast_list, state, next))
+        {
+            return NULL;
+        }
+    }
+
+    return (ast_list == NULL) ? node : ast_list;
+}
+
+struct ast *parse_compound_list(struct lexer *lexer, enum parser_state *state)
+{
+    clean_cons_tokens(TOKEN_NEWLINE, lexer);
+
+    struct ast *node = parse_and_or(lexer, state);
+    struct ast *ast_lst = NULL;
+
+    struct token next = lexer_peek(lexer);
+
+    if (error_check(node, state, next))
+    {
+        return NULL;
+    }
+
+    size_t i = 0;
+
+    while (next.type == TOKEN_SEMICOLON || next.type == TOKEN_NEWLINE)
+    {
+        lexer_pop(lexer);
+
+        clean_cons_tokens(TOKEN_NEWLINE, lexer);
+        next = lexer_peek(lexer);
+
+        // This condition might need to be expanded in the future
+        // But I don't know if there is a better way to do this
+        if (next.type == TOKEN_THEN || next.type == TOKEN_FI
+            || next.type == TOKEN_ELSE || next.type == TOKEN_ELIF
+            || next.type == TOKEN_DO || next.type == TOKEN_DONE
+            || next.type == TOKEN_CURLY_RIGHT || next.type == TOKEN_PAR_LEFT)
+        {
+            return (ast_lst == NULL) ? node : ast_lst;
+        }
+
+        if (ast_lst == NULL)
+        {
+            ast_lst = ast_create(AST_LIST);
+            if (ast_lst == NULL)
+            {
+                cleanup(node, state);
+                return NULL;
+            }
+
+            set_left(ast_lst, node);
+            i++;
+        }
+
+        next = lexer_peek(lexer);
+
+        struct ast *right = parse_and_or(lexer, state);
+
+        // Can put the i++ in the set_i function but I'm too scared
+        set_i(ast_lst, right, i);
+        i++;
+
+        next = lexer_peek(lexer);
+        if (error_check(ast_lst, state, next))
+        {
+            return NULL;
+        }
+    }
+
+    return (ast_lst == NULL) ? node : ast_lst;
+}