59 lines
1.5 KiB
C++
59 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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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(state &cs, F body) {
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if (!cs.p_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{cs};
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int argmask1 = cs.p_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 *>(cs.p_state->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 = cs.p_callstack->next;
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ident_link aliaslink = {
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cs.p_callstack->id, cs.p_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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cs.p_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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cs.p_callstack = aliaslink.next;
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int argmask2 = cs.p_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 *>(cs.p_state->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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