Bob Nystrom
2dc209e585
Implement the initial infrastructure for foreign classes in the Wren VM, including new opcodes (FOREIGN_CONSTRUCT, FOREIGN_CLASS), a WrenBindForeignClassFn callback type in the public API, and updated CLI vm.c to store and forward foreign binding callbacks via setForeignCallbacks(). The compiler now tracks whether a class is foreign via a new isForeign flag in ClassCompiler, emits CODE_FOREIGN_CONSTRUCT instead of CODE_CONSTRUCT for foreign class constructors, and errors on field definitions inside foreign classes. The debug dump and opcode header gain entries for the new opcodes, and wrenBindSuperclass handles the -1 numFields sentinel for foreign classes to prevent field inheritance from superclasses.
25 lines
460 B
C
25 lines
460 B
C
#include <string.h>
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#include "value.h"
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static WrenValue* value;
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static void setValue(WrenVM* vm)
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{
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value = wrenGetArgumentValue(vm, 1);
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}
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static void getValue(WrenVM* vm)
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{
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wrenReturnValue(vm, value);
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wrenReleaseValue(vm, value);
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}
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WrenForeignMethodFn valueBindMethod(const char* signature)
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{
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if (strcmp(signature, "static Api.value=(_)") == 0) return setValue;
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if (strcmp(signature, "static Api.value") == 0) return getValue;
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return NULL;
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}
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