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Make env_node_t's destructor private

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Migrate responsibility for popping the environment into var_stack_t
This commit is contained in:
ridiculousfish 2017-01-26 11:20:09 -08:00
parent 61887c061b
commit 3525a9d7ee
1 changed files with 66 additions and 53 deletions
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119
src/env.cpp
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@ -60,11 +60,22 @@ bool g_use_posix_spawn = false; // will usually be set to true
/// Does the terminal have the "eat_newline_glitch".
bool term_has_xn = false;
/// List of all locale environment variable names.
static const wchar_t *const locale_variable[] = {
L"LANG", L"LANGUAGE", L"LC_ALL", L"LC_ADDRESS", L"LC_COLLATE",
L"LC_CTYPE", L"LC_IDENTIFICATION", L"LC_MEASUREMENT", L"LC_MESSAGES", L"LC_MONETARY",
L"LC_NAME", L"LC_NUMERIC", L"LC_PAPER", L"LC_TELEPHONE", L"LC_TIME",
NULL};
/// List of all curses environment variable names.
static const wchar_t *const curses_variable[] = {L"TERM", L"TERMINFO", L"TERMINFO_DIRS", NULL};
// Struct representing one level in the function variable stack.
// Only our variable stack should create these
// Only our variable stack should create and destroy these
class env_node_t {
friend struct var_stack_t;
env_node_t(bool is_new_scope) : new_scope(is_new_scope) {}
~env_node_t() {}
public:
@ -96,6 +107,7 @@ static pthread_mutex_t env_lock = PTHREAD_MUTEX_INITIALIZER;
static void mark_changed_exported();
static int local_scope_exports(env_node_t *n);
static void handle_locale(const wchar_t *env_var_name);
// A class wrapping up a variable stack
// Currently there is only one variable stack in fish,
@ -123,15 +135,61 @@ struct var_stack_t {
// Pushes a new node onto our stack
// Optionally creates a new scope for the node
void push(bool new_scope) {
env_node_t *node = new env_node_t(new_scope);
node->next = this->top;
this->top = node;
if (new_scope && local_scope_exports(this->top)) {
void push(bool new_scope);
// Pops the top node if it's not global
void pop();
};
void var_stack_t::push(bool new_scope) {
env_node_t *node = new env_node_t(new_scope);
node->next = this->top;
this->top = node;
if (new_scope && local_scope_exports(this->top)) {
mark_changed_exported();
}
}
void var_stack_t::pop() {
// Don't pop the global
if (this->top == this->global_env) {
debug(0, _(L"Tried to pop empty environment stack."));
sanity_lose();
return;
}
const wchar_t *locale_changed = NULL;
env_node_t *killme = this->top;
for (int i = 0; locale_variable[i]; i++) {
var_table_t::iterator result = killme->env.find(locale_variable[i]);
if (result != killme->env.end()) {
locale_changed = locale_variable[i];
break;
}
}
if (killme->new_scope) { //!OCLINT(collapsible if statements)
if (killme->exportv || local_scope_exports(killme->next)) {
mark_changed_exported();
}
}
};
this->top = this->top->next;
assert(this->top != NULL);
var_table_t::iterator iter;
for (iter = killme->env.begin(); iter != killme->env.end(); ++iter) {
const var_entry_t &entry = iter->second;
if (entry.exportv) {
mark_changed_exported();
break;
}
}
delete killme;
// TODO: move this to something general
if (locale_changed) handle_locale(locale_changed);
}
// Get the global variable stack
static var_stack_t &vars_stack() {
@ -174,16 +232,6 @@ static null_terminated_array_t<char> export_array;
static bool has_changed_exported = true;
static void mark_changed_exported() { has_changed_exported = true; }
/// List of all locale environment variable names.
static const wchar_t *const locale_variable[] = {
L"LANG", L"LANGUAGE", L"LC_ALL", L"LC_ADDRESS", L"LC_COLLATE",
L"LC_CTYPE", L"LC_IDENTIFICATION", L"LC_MEASUREMENT", L"LC_MESSAGES", L"LC_MONETARY",
L"LC_NAME", L"LC_NUMERIC", L"LC_PAPER", L"LC_TELEPHONE", L"LC_TIME",
NULL};
/// List of all curses environment variable names.
static const wchar_t *const curses_variable[] = {L"TERM", L"TERMINFO", L"TERMINFO_DIRS", NULL};
const var_entry_t *env_node_t::find_entry(const wcstring &key) {
const var_entry_t *result = NULL;
var_table_t::const_iterator where = env.find(key);
@ -981,42 +1029,7 @@ void env_push(bool new_scope) {
}
void env_pop() {
if (vars_stack().top != vars_stack().global_env) {
int i;
const wchar_t *locale_changed = NULL;
env_node_t *killme = vars_stack().top;
for (i = 0; locale_variable[i]; i++) {
var_table_t::iterator result = killme->env.find(locale_variable[i]);
if (result != killme->env.end()) {
locale_changed = locale_variable[i];
break;
}
}
if (killme->new_scope) { //!OCLINT(collapsible if statements)
if (killme->exportv || local_scope_exports(killme->next)) mark_changed_exported();
}
vars_stack().top = vars_stack().top->next;
var_table_t::iterator iter;
for (iter = killme->env.begin(); iter != killme->env.end(); ++iter) {
const var_entry_t &entry = iter->second;
if (entry.exportv) {
mark_changed_exported();
break;
}
}
delete killme;
if (locale_changed) handle_locale(locale_changed);
} else {
debug(0, _(L"Tried to pop empty environment stack."));
sanity_lose();
}
vars_stack().pop();
}
/// Function used with to insert keys of one table into a set::set<wcstring>.