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d51406fe87
* libguile/vm-engine.c (vm_run): Add new error case, vm_error_not_enough_values. * libguile/vm-i-system.c (goto/nargs, call/nargs): So, in these cases, if we get too many values, we don't truncate the values like we do in the single-value continuation case, or in the mvbind case. What to do? I guess we either truncate them here, or only allow the correct number of values. Dunno. Mark the code as a fixme. (truncate-values): New instruction, for mv-bind: checks that the number of values on the stack is compatible with the number of bindings we have arranged for them, truncating if necessary. * module/language/scheme/translate.scm (custom-transformer-table): Compile receive as a primary form -- not so much because it is a primary form, but more to test the mv-bind machinery. Also it's more efficient, I think. * module/system/il/compile.scm (lift-variables!): New helper, factored out of `optimize'. (optimize): Add a few more cases. Adapt `lambda' optimization, which isn't much. I'm not happy with ghil as a mungeable language. Add a case for call-with-values with the second argument is a lambda: lift the lambda. Untested. (codegen): Refactor the push-bindings! code. Compile mv-bind. * module/system/il/ghil.scm (<ghil-mv-bind>): Add mv-bind construct, along with its procedures. * module/system/il/glil.scm (<glil-mv-bind>): Add mv-bind construct, different from the high-level one. It makes sense in the source, I think. * module/system/vm/assemble.scm (codegen): Assemble glil-mv-bind by pushing onto the bindings list, and actually push some code to truncate the values. |
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