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This commit is contained in:
Kartik K. Agaram 2017-09-01 01:50:32 -07:00
parent 7d07cd1de8
commit 4856c70107
1 changed files with 6 additions and 3 deletions
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9
076continuation.cc
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@ -93,8 +93,8 @@ case CALL_WITH_CONTINUATION_MARK: {
}
:(before "End Primitive Recipe Implementations")
case CALL_WITH_CONTINUATION_MARK: {
// like call, but mark the current call as a 'reset' call before pushing the
// next one on it
// like call, but mark the current call as a 'base of continuation' call
// before pushing the next one on it
if (Trace_stream) {
++Trace_stream->callstack_depth;
trace("trace") << "delimited continuation; incrementing callstack depth to " << Trace_stream->callstack_depth << end();
@ -136,7 +136,10 @@ case RETURN_CONTINUATION_UNTIL_MARK: {
call_stack::iterator find_base_of_continuation(call_stack& c); // manual prototype containing '::'
call_stack::iterator base = find_base_of_continuation(Current_routine->calls);
if (base == Current_routine->calls.end()) {
raise << maybe(current_recipe_name()) << "couldn't find a 'reset' call to jump out to\n" << end();
raise << maybe(current_recipe_name()) << "couldn't find a 'call-with-continuation-mark' to return to\n" << end();
raise << maybe(current_recipe_name()) << "call stack:\n" << end();
for (call_stack::iterator p = Current_routine->calls.begin(); p != Current_routine->calls.end(); ++p)
raise << maybe(current_recipe_name()) << " " << get(Recipe, p->running_recipe).name << '\n' << end();
break;
}
Delimited_continuation[Next_delimited_continuation_id] = call_stack(Current_routine->calls.begin(), base);