Expression_Ptr Listize::operator()(Complex_Selector_Ptr sel)
{
List_Obj l = SASS_MEMORY_NEW(List, sel->pstate(), 2);
l->from_selector(true);
Compound_Selector_Obj head = sel->head();
if (head && !head->is_empty_reference())
{
Expression_Ptr hh = head->perform(this);
if (hh) l->append(hh);
}
std::string reference = ! sel->reference() ? ""
: sel->reference()->to_string();
switch(sel->combinator())
{
case Complex_Selector::PARENT_OF:
l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), ">"));
break;
case Complex_Selector::ADJACENT_TO:
l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), "+"));
break;
case Complex_Selector::REFERENCE:
l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), "/" + reference + "/"));
break;
case Complex_Selector::PRECEDES:
l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), "~"));
break;
case Complex_Selector::ANCESTOR_OF:
break;
}
Complex_Selector_Obj tail = sel->tail();
if (tail)
{
Expression_Obj tt = tail->perform(this);
if (List_Ptr ls = SASS_MEMORY_CAST(List, tt))
{ l->concat(ls); }
}
if (l->length() == 0) return 0;
return l.detach();
}
Expression_Ptr Listize::operator()(Selector_List_Ptr sel)
{
List_Obj l = SASS_MEMORY_NEW(List, sel->pstate(), sel->length(), SASS_COMMA);
l->from_selector(true);
for (size_t i = 0, L = sel->length(); i < L; ++i) {
if (!sel->at(i)) continue;
l->append(sel->at(i)->perform(this));
}
if (l->length()) return l.detach();
return SASS_MEMORY_NEW(Null, l->pstate());
}
void bind(std::string type, std::string name, Parameters_Obj ps, Arguments_Obj as, Context* ctx, Env* env, Eval* eval)
{
std::string callee(type + " " + name);
std::map<std::string, Parameter_Obj> param_map;
for (size_t i = 0, L = as->length(); i < L; ++i) {
if (auto str = SASS_MEMORY_CAST(String_Quoted, (*as)[i]->value())) {
// force optional quotes (only if needed)
if (str->quote_mark()) {
str->quote_mark('*');
}
}
}
// Set up a map to ensure named arguments refer to actual parameters. Also
// eval each default value left-to-right, wrt env, populating env as we go.
for (size_t i = 0, L = ps->length(); i < L; ++i) {
Parameter_Obj p = ps->at(i);
param_map[p->name()] = p;
// if (p->default_value()) {
// env->local_frame()[p->name()] = p->default_value()->perform(eval->with(env));
// }
}
// plug in all args; if we have leftover params, deal with it later
size_t ip = 0, LP = ps->length();
size_t ia = 0, LA = as->length();
while (ia < LA) {
Argument_Obj a = as->at(ia);
if (ip >= LP) {
// skip empty rest arguments
if (a->is_rest_argument()) {
if (List_Obj l = SASS_MEMORY_CAST(List, a->value())) {
if (l->length() == 0) {
++ ia; continue;
}
}
}
std::stringstream msg;
msg << "wrong number of arguments (" << LA << " for " << LP << ")";
msg << " for `" << name << "'";
return error(msg.str(), as->pstate());
}
Parameter_Obj p = ps->at(ip);
// If the current parameter is the rest parameter, process and break the loop
if (p->is_rest_parameter()) {
// The next argument by coincidence provides a rest argument
if (a->is_rest_argument()) {
// We should always get a list for rest arguments
if (List_Obj rest = SASS_MEMORY_CAST(List, a->value())) {
// create a new list object for wrapped items
List_Ptr arglist = SASS_MEMORY_NEW(List,
p->pstate(),
0,
rest->separator(),
true);
// wrap each item from list as an argument
for (Expression_Obj item : rest->elements()) {
if (Argument_Obj arg = SASS_MEMORY_CAST(Argument, item)) {
arglist->append(SASS_MEMORY_COPY(arg)); // copy
} else {
arglist->append(SASS_MEMORY_NEW(Argument,
item->pstate(),
&item,
"",
false,
false));
}
}
// assign new arglist to environment
env->local_frame()[p->name()] = arglist;
}
// invalid state
else {
throw std::runtime_error("invalid state");
}
} else if (a->is_keyword_argument()) {
// expand keyword arguments into their parameters
List_Ptr arglist = SASS_MEMORY_NEW(List, p->pstate(), 0, SASS_COMMA, true);
env->local_frame()[p->name()] = arglist;
Map_Obj argmap = SASS_MEMORY_CAST(Map, a->value());
for (auto key : argmap->keys()) {
std::string name = unquote(SASS_MEMORY_CAST(String_Constant, key)->value());
arglist->append(SASS_MEMORY_NEW(Argument,
key->pstate(),
argmap->at(key),
"$" + name,
false,
false));
}
} else {
// create a new list object for wrapped items
List_Obj arglist = SASS_MEMORY_NEW(List,
p->pstate(),
0,
SASS_COMMA,
true);
// consume the next args
while (ia < LA) {
// get and post inc
a = (*as)[ia++];
// maybe we have another list as argument
List_Obj ls = SASS_MEMORY_CAST(List, a->value());
// skip any list completely if empty
if (ls && ls->empty() && a->is_rest_argument()) continue;
Expression_Obj value = a->value();
if (Argument_Obj arg = SASS_MEMORY_CAST(Argument, value)) {
arglist->append(&arg);
}
// check if we have rest argument
else if (a->is_rest_argument()) {
// preserve the list separator from rest args
if (List_Obj rest = SASS_MEMORY_CAST(List, a->value())) {
arglist->separator(rest->separator());
for (size_t i = 0, L = rest->size(); i < L; ++i) {
Expression_Obj obj = rest->at(i);
arglist->append(SASS_MEMORY_NEW(Argument,
obj->pstate(),
&obj,
"",
false,
false));
}
}
// no more arguments
break;
}
// wrap all other value types into Argument
else {
arglist->append(SASS_MEMORY_NEW(Argument,
a->pstate(),
a->value(),
a->name(),
false,
false));
}
}
// assign new arglist to environment
env->local_frame()[p->name()] = &arglist;
}
// consumed parameter
++ip;
// no more paramaters
break;
}
// If the current argument is the rest argument, extract a value for processing
else if (a->is_rest_argument()) {
// normal param and rest arg
List_Obj arglist = SASS_MEMORY_CAST(List, a->value());
// empty rest arg - treat all args as default values
if (!arglist->length()) {
break;
} else {
if (arglist->length() > LP - ip && !ps->has_rest_parameter()) {
size_t arg_count = (arglist->length() + LA - 1);
std::stringstream msg;
msg << callee << " takes " << LP;
msg << (LP == 1 ? " argument" : " arguments");
msg << " but " << arg_count;
msg << (arg_count == 1 ? " was passed" : " were passed.");
deprecated_bind(msg.str(), as->pstate());
while (arglist->length() > LP - ip) {
arglist->elements().erase(arglist->elements().end() - 1);
}
}
}
// otherwise move one of the rest args into the param, converting to argument if necessary
Expression_Obj obj = arglist->at(0);
if (!(a = SASS_MEMORY_CAST(Argument, obj))) {
Expression_Ptr a_to_convert = &obj;
a = SASS_MEMORY_NEW(Argument,
a_to_convert->pstate(),
a_to_convert,
"",
false,
false);
}
arglist->elements().erase(arglist->elements().begin());
if (!arglist->length() || (!arglist->is_arglist() && ip + 1 == LP)) {
++ia;
}
} else if (a->is_keyword_argument()) {
Map_Obj argmap = SASS_MEMORY_CAST(Map, a->value());
for (auto key : argmap->keys()) {
std::string name = "$" + unquote(SASS_MEMORY_CAST(String_Constant, key)->value());
if (!param_map.count(name)) {
std::stringstream msg;
msg << callee << " has no parameter named " << name;
error(msg.str(), a->pstate());
}
env->local_frame()[name] = &argmap->at(&key);
}
++ia;
continue;
} else {
++ia;
}
if (a->name().empty()) {
if (env->has_local(p->name())) {
std::stringstream msg;
msg << "parameter " << p->name()
<< " provided more than once in call to " << callee;
error(msg.str(), a->pstate());
}
// ordinal arg -- bind it to the next param
env->local_frame()[p->name()] = &a->value();
++ip;
}
else {
// named arg -- bind it to the appropriately named param
if (!param_map.count(a->name())) {
std::stringstream msg;
msg << callee << " has no parameter named " << a->name();
error(msg.str(), a->pstate());
}
if (param_map[a->name()]->is_rest_parameter()) {
std::stringstream msg;
msg << "argument " << a->name() << " of " << callee
<< "cannot be used as named argument";
error(msg.str(), a->pstate());
}
if (env->has_local(a->name())) {
std::stringstream msg;
msg << "parameter " << p->name()
<< "provided more than once in call to " << callee;
error(msg.str(), a->pstate());
}
env->local_frame()[a->name()] = &a->value();
}
}
// EO while ia
// If we make it here, we're out of args but may have leftover params.
// That's only okay if they have default values, or were already bound by
// named arguments, or if it's a single rest-param.
for (size_t i = ip; i < LP; ++i) {
Parameter_Obj leftover = ps->at(i);
// cerr << "env for default params:" << endl;
// env->print();
// cerr << "********" << endl;
if (!env->has_local(leftover->name())) {
if (leftover->is_rest_parameter()) {
env->local_frame()[leftover->name()] = SASS_MEMORY_NEW(List,
leftover->pstate(),
0,
SASS_COMMA,
true);
}
else if (leftover->default_value()) {
Expression_Ptr dv = leftover->default_value()->perform(eval);
env->local_frame()[leftover->name()] = dv;
}
else {
// param is unbound and has no default value -- error
throw Exception::MissingArgument(as->pstate(), name, leftover->name(), type);
}
}
}
return;
}
Block_Ptr Cssize::debubble(Block_Ptr children, Statement_Ptr parent)
{
Has_Block_Obj previous_parent = 0;
std::vector<std::pair<bool, Block_Obj>> baz = slice_by_bubble(children);
Block_Obj result = SASS_MEMORY_NEW(Block, children->pstate());
for (size_t i = 0, L = baz.size(); i < L; ++i) {
bool is_bubble = baz[i].first;
Block_Obj slice = baz[i].second;
if (!is_bubble) {
if (!parent) {
result->append(slice);
}
else if (previous_parent) {
previous_parent->block()->concat(slice);
}
else {
previous_parent = Cast<Has_Block>(SASS_MEMORY_COPY(parent));
previous_parent->block(slice);
previous_parent->tabs(parent->tabs());
result->append(previous_parent);
}
continue;
}
for (size_t j = 0, K = slice->length(); j < K; ++j)
{
Statement_Ptr ss;
Statement_Obj stm = slice->at(j);
// this has to go now here (too bad)
Bubble_Obj node = Cast<Bubble>(stm);
Media_Block_Ptr m1 = NULL;
Media_Block_Ptr m2 = NULL;
if (parent) m1 = Cast<Media_Block>(parent);
if (node) m2 = Cast<Media_Block>(node->node());
if (!parent ||
parent->statement_type() != Statement::MEDIA ||
node->node()->statement_type() != Statement::MEDIA ||
(m1 && m2 && *m1->media_queries() == *m2->media_queries())
)
{
ss = node->node();
}
else
{
List_Obj mq = merge_media_queries(
Cast<Media_Block>(node->node()),
Cast<Media_Block>(parent)
);
if (!mq->length()) continue;
if (Media_Block* b = Cast<Media_Block>(node->node())) {
b->media_queries(mq);
}
ss = node->node();
}
if (!ss) continue;
ss->tabs(ss->tabs() + node->tabs());
ss->group_end(node->group_end());
Block_Obj bb = SASS_MEMORY_NEW(Block,
children->pstate(),
children->length(),
children->is_root());
bb->append(ss->perform(this));
Block_Obj wrapper_block = SASS_MEMORY_NEW(Block,
children->pstate(),
children->length(),
children->is_root());
Block_Ptr wrapper = flatten(bb);
wrapper_block->append(wrapper);
if (wrapper->length()) {
previous_parent = NULL;
}
if (wrapper_block) {
result->append(wrapper_block);
}
}
}
return flatten(result);
}
