60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#ifndef LIBCUBESCRIPT_VM_HH
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#define LIBCUBESCRIPT_VM_HH
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#include <cubescript/cubescript.hh>
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#include "cs_std.hh"
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#include "cs_ident.hh"
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#include "cs_gen.hh"
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#include "cs_thread.hh"
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namespace cubescript {
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struct break_exception {
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};
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struct continue_exception {
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};
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template<typename F>
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static void call_with_args(thread_state &ts, F body) {
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if (!ts.callstack) {
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body();
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return;
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}
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valarray<ident_stack, MAX_ARGUMENTS> argstack{*ts.pstate};
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int argmask1 = ts.callstack->usedargs;
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for (int i = 0; argmask1; argmask1 >>= 1, ++i) {
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if (argmask1 & 1) {
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static_cast<alias_impl *>(ts.istate->identmap[i])->undo_arg(
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argstack[i]
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);
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}
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}
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ident_link *prevstack = ts.callstack->next;
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ident_link aliaslink = {
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ts.callstack->id, ts.callstack,
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prevstack ? prevstack->usedargs : ((1 << MAX_ARGUMENTS) - 1),
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prevstack ? prevstack->argstack : nullptr
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};
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ts.callstack = &aliaslink;
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call_with_cleanup(std::move(body), [&]() {
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if (prevstack) {
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prevstack->usedargs = aliaslink.usedargs;
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}
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ts.callstack = aliaslink.next;
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int argmask2 = ts.callstack->usedargs;
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for (int i = 0; argmask2; argmask2 >>= 1, ++i) {
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if (argmask2 & 1) {
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static_cast<alias_impl *>(ts.istate->identmap[i])->redo_arg(
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argstack[i]
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);
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}
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}
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});
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}
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} /* namespace cubescript */
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#endif /* LIBCUBESCRIPT_VM_HH */
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