banger commit

src/vm.h

@@ -0,0 +1,116 @@
+#ifndef NOOM_VM
+#define NOOM_VM
+
+#include "types.h"
+
+// Defines values, threads, bullshit, idc
+
+typedef enum noomV_ObjTag {
+	NOOMV_OSTR,
+	NOOMV_OFUNC,
+	NOOMV_OCLOSURE,
+	NOOMV_OTABLE,
+	NOOMV_OUSERDATA,
+	NOOMV_OPOINTER,
+} noomV_ObjTag;
+
+typedef struct noomV_Object {
+	noomV_ObjTag tag;
+	bool marked;
+	struct noomV_Object *next;
+	struct noomV_Object *nextGray;
+} noomV_Object;
+
+typedef enum noomV_ValueTag {
+	NOOMV_VNIL,
+	NOOMV_VBOOL,
+	NOOMV_VINT,
+	NOOMV_VNUM,
+	NOOMV_VLUSER,
+	NOOMV_VCFUNC,
+	NOOMV_VOBJ,
+} noomV_ValueTag;
+
+typedef struct noomV_Value {
+	noomV_ValueTag tag;
+	union {
+		noom_bool_t boolean;
+		noom_int_t integer;
+		noom_float_t number;
+		noomV_Object *obj;
+	};
+} noomV_Value;
+
+typedef struct noomV_String {
+	noomV_Object obj;
+	noom_uint_t len;
+	// Includes NUL-terminator!
+	char data[];
+} noomV_String;
+
+typedef struct noomV_Table {
+	noomV_Object obj;
+	struct noomV_Table *meta;
+	noom_uint_t entries;
+	noomV_Value *entrydata;
+} noomV_Table;
+
+typedef struct noomV_Pointer {
+	noomV_Object obj;
+	noomV_Value value;
+} noomV_Pointer;
+
+typedef enum noomV_Opcode : unsigned char {
+	NOOMV_NOP,
+	// TODO: rest of ops
+} noomV_Opcode;
+
+typedef struct noomV_Inst {
+	noomV_Opcode op;
+	unsigned char A;
+	union {
+		struct {
+			unsigned char B;
+			unsigned char C;
+		};
+		short sD;
+		unsigned short uD;
+	};
+} noomV_Inst;
+
+typedef struct noomV_UpvalDesc {
+	char *name;
+	unsigned char idx;
+	noom_bool_t isStack;
+} noomV_UpvalDesc;
+
+typedef struct noomV_LocalDesc {
+	char *name;
+	unsigned char stackIdx;
+	// offset of first instruction where local exists
+	unsigned int pcStart;
+	// offset of first instruction where local is dropped
+	unsigned int pcEnd;
+} noomV_LocalDesc;
+
+typedef struct noomV_Function {
+	noomV_Object obj;
+	// source location string
+	noomV_String *chunkname;
+	noomV_Inst *code;
+	noomV_Value *consts;
+	noomV_Function **protos;
+	noomV_UpvalDesc *upvals;
+	noomV_LocalDesc *locals;
+	unsigned int codesize;
+	unsigned int linedefined;
+	unsigned int lastlinedefined;
+	unsigned char argc;
+	unsigned char flags;
+	unsigned char constsize;
+	unsigned char protosize;
+	unsigned char upvalsize;
+	unsigned char localsize;
+} noomV_Function;
+
+#endif