1 files changed, 50 insertions, 0 deletions
diff --git a/vm.h b/vm.h
new file mode 100644
index 0000000..2123c35
--- /dev/null
+++ b/vm.h
@@ -0,0 +1,50 @@
+/*
+ * vm.h - Source code for the BPEG virtual machine datatypes
+ */
+
+enum VMOpcode {
+    VM_EMPTY = 0,
+    VM_ANYCHAR = 1,
+    VM_STRING,
+    VM_RANGE,
+    VM_NOT,
+    VM_UPTO,
+    VM_UPTO_AND,
+    VM_REPEAT,
+    VM_BEFORE,
+    VM_AFTER,
+    VM_CAPTURE,
+    VM_OTHERWISE,
+    VM_CHAIN,
+    VM_REPLACE,
+    VM_REF,
+};
+
+typedef struct vm_op_s {
+    enum VMOpcode op;
+    const char *start, *end;
+    ssize_t len;
+    union {
+        const char *s;
+        struct {
+            char low, high;
+        } range;
+        struct {
+            ssize_t min, max;
+            struct vm_op_s *sep, *repeat_pat;
+        } repetitions;
+        struct {
+            struct vm_op_s *first, *second;
+        } multiple;
+        struct {
+            struct vm_op_s *replace_pat;
+            const char *replacement;
+        } replace;
+        struct {
+            struct vm_op_s *capture_pat;
+            char *name;
+        } capture;
+        struct vm_op_s *pat;
+    } args;
+} vm_op_t;
+