Bash-4.4 patch 4

[thirdparty/bash.git] / variables.h

diff --git a/variables.h b/variables.h
index 7041ca94d562a6ce1238be78c45a7e09668eaa69..25c9ae072a15fdffe0491d12c8d057bb5282a607 100644 (file)
--- a/variables.h
+++ b/variables.h
@@ -1,6 +1,6 @@
 /* variables.h -- data structures for shell variables. */
 
-/* Copyright (C) 1987-2010 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2015 Free Software Foundation, Inc.
 
    This file is part of GNU Bash, the Bourne Again SHell.
 
@@ -112,8 +112,9 @@ typedef struct _vlist {
 #define att_uppercase  0x0000100       /* word converted to uppercase on assignment */
 #define att_lowercase  0x0000200       /* word converted to lowercase on assignment */
 #define att_capcase    0x0000400       /* word capitalized on assignment */
+#define att_nameref    0x0000800       /* word is a name reference */
 
-#define user_attrs     (att_exported|att_readonly|att_integer|att_local|att_trace|att_uppercase|att_lowercase|att_capcase)
+#define user_attrs     (att_exported|att_readonly|att_integer|att_local|att_trace|att_uppercase|att_lowercase|att_capcase|att_nameref)
 
 #define attmask_user   0x0000fff
 
@@ -144,6 +145,7 @@ typedef struct _vlist {
 #define uppercase_p(var)       ((((var)->attributes) & (att_uppercase)))
 #define lowercase_p(var)       ((((var)->attributes) & (att_lowercase)))
 #define capcase_p(var)         ((((var)->attributes) & (att_capcase)))
+#define nameref_p(var)         ((((var)->attributes) & (att_nameref)))
 
 #define invisible_p(var)       ((((var)->attributes) & (att_invisible)))
 #define non_unsettable_p(var)  ((((var)->attributes) & (att_nounset)))
@@ -154,20 +156,28 @@ typedef struct _vlist {
 
 #define tempvar_p(var)         ((((var)->attributes) & (att_tempvar)))
 
+/* Variable names: lvalues */
+#define name_cell(var)         ((var)->name)
+
 /* Acessing variable values: rvalues */
 #define value_cell(var)                ((var)->value)
 #define function_cell(var)     (COMMAND *)((var)->value)
 #define array_cell(var)                (ARRAY *)((var)->value)
 #define assoc_cell(var)                (HASH_TABLE *)((var)->value)
+#define nameref_cell(var)      ((var)->value)          /* so it can change later */
+
+#define NAMEREF_MAX    8       /* only 8 levels of nameref indirection */
 
-#define var_isnull(var)                ((var)->value == 0)
 #define var_isset(var)         ((var)->value != 0)
+#define var_isunset(var)       ((var)->value == 0)
+#define var_isnull(var)                ((var)->value && *(var)->value == 0)
 
 /* Assigning variable values: lvalues */
 #define var_setvalue(var, str) ((var)->value = (str))
 #define var_setfunc(var, func) ((var)->value = (char *)(func))
 #define var_setarray(var, arr) ((var)->value = (char *)(arr))
 #define var_setassoc(var, arr) ((var)->value = (char *)(arr))
+#define var_setref(var, str)   ((var)->value = (str))
 
 /* Make VAR be auto-exported. */
 #define set_auto_export(var) \
@@ -205,6 +215,12 @@ typedef struct _vlist {
              (var)->exportstr = (char *)NULL; \
            } \
        } while (0)
+
+#define ifsname(s)     ((s)[0] == 'I' && (s)[1] == 'F' && (s)[2] == 'S' && (s)[3] == '\0')
+
+/* Special value for nameref with invalid value for creation or assignment */
+extern SHELL_VAR nameref_invalid_value;
+#define INVALID_NAMEREF_VALUE  (void *)&nameref_invalid_value
        
 /* Stuff for hacking variables. */
 typedef int sh_var_map_func_t __P((SHELL_VAR *));
@@ -233,12 +249,25 @@ extern SHELL_VAR *var_lookup __P((const char *, VAR_CONTEXT *));
 extern SHELL_VAR *find_function __P((const char *));
 extern FUNCTION_DEF *find_function_def __P((const char *));
 extern SHELL_VAR *find_variable __P((const char *));
-extern SHELL_VAR *find_variable_internal __P((const char *, int));
-extern SHELL_VAR *find_tempenv_variable __P((const char *));
+extern SHELL_VAR *find_variable_noref __P((const char *));
+extern SHELL_VAR *find_variable_last_nameref __P((const char *, int));
+extern SHELL_VAR *find_global_variable_last_nameref __P((const char *, int));
+extern SHELL_VAR *find_variable_nameref __P((SHELL_VAR *));
+extern SHELL_VAR *find_variable_nameref_for_create __P((const char *, int));
+extern SHELL_VAR *find_variable_nameref_for_assignment __P((const char *, int));
+/*extern SHELL_VAR *find_variable_internal __P((const char *, int));*/
+extern SHELL_VAR *find_variable_tempenv __P((const char *));
+extern SHELL_VAR *find_variable_notempenv __P((const char *));
 extern SHELL_VAR *find_global_variable __P((const char *));
+extern SHELL_VAR *find_global_variable_noref __P((const char *));
+extern SHELL_VAR *find_shell_variable __P((const char *));
+extern SHELL_VAR *find_tempenv_variable __P((const char *));
+extern SHELL_VAR *find_variable_no_invisible __P((const char *));
+extern SHELL_VAR *find_variable_for_assignment __P((const char *));
 extern SHELL_VAR *copy_variable __P((SHELL_VAR *));
 extern SHELL_VAR *make_local_variable __P((const char *));
 extern SHELL_VAR *bind_variable __P((const char *, char *, int));
+extern SHELL_VAR *bind_global_variable __P((const char *, char *, int));
 extern SHELL_VAR *bind_function __P((const char *, COMMAND *));
 
 extern void bind_function_def __P((const char *, FUNCTION_DEF *));
@@ -273,8 +302,12 @@ extern SHELL_VAR *bind_var_to_int __P((char *, intmax_t));
 extern int assign_in_env __P((WORD_DESC *, int));
 
 extern int unbind_variable __P((const char *));
+extern int check_unbind_variable __P((const char *));
+extern int unbind_nameref __P((const char *));
+extern int unbind_variable_noref __P((const char *));
 extern int unbind_func __P((const char *));
 extern int unbind_function_def __P((const char *));
+extern int delete_var __P((const char *, VAR_CONTEXT *));
 extern int makunbound __P((const char *, VAR_CONTEXT *));
 extern int kill_local_variable __P((const char *));
 extern void delete_all_variables __P((HASH_TABLE *));
@@ -303,6 +336,7 @@ extern void dispose_used_env_vars __P((void));
 extern void dispose_function_env __P((void));
 extern void dispose_builtin_env __P((void));
 extern void merge_temporary_env __P((void));
+extern void flush_temporary_env __P((void));
 extern void merge_builtin_env __P((void));
 extern void kill_all_local_variables __P((void));
 
@@ -313,6 +347,7 @@ extern void set_func_auto_export __P((const char *));
 
 extern void sort_variables __P((SHELL_VAR **));
 
+extern int chkexport __P((char *));
 extern void maybe_make_export_env __P((void));
 extern void update_export_env_inplace __P((char *, int, char *));
 extern void put_command_name_into_env __P((char *));
@@ -326,7 +361,7 @@ extern void print_var_function __P((SHELL_VAR *));
 
 #if defined (ARRAY_VARS)
 extern SHELL_VAR *make_new_array_variable __P((char *));
-extern SHELL_VAR *make_local_array_variable __P((char *));
+extern SHELL_VAR *make_local_array_variable __P((char *, int));
 
 extern SHELL_VAR *make_new_assoc_variable __P((char *));
 extern SHELL_VAR *make_local_assoc_variable __P((char *));
@@ -354,6 +389,7 @@ extern void sv_ifs __P((char *));
 extern void sv_path __P((char *));
 extern void sv_mail __P((char *));
 extern void sv_funcnest __P((char *));
+extern void sv_execignore __P((char *));
 extern void sv_globignore __P((char *));
 extern void sv_ignoreeof __P((char *));
 extern void sv_strict_posix __P((char *));
@@ -361,6 +397,7 @@ extern void sv_optind __P((char *));
 extern void sv_opterr __P((char *));
 extern void sv_locale __P((char *));
 extern void sv_xtracefd __P((char *));
+extern void sv_shcompat __P((char *));
 
 #if defined (READLINE)
 extern void sv_comp_wordbreaks __P((char *));
@@ -383,8 +420,12 @@ extern void sv_histchars __P((char *));
 extern void sv_histtimefmt __P((char *));
 #endif /* HISTORY */
 
-#if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
+#if defined (HAVE_TZSET)
 extern void sv_tz __P((char *));
 #endif
 
+#if defined (JOB_CONTROL)
+extern void sv_childmax __P((char *));
+#endif
+
 #endif /* !_VARIABLES_H_ */