Working...

Source/InstructionTable.rs

@@ -0,0 +1,45 @@
+use crate::Instruction;
+use crate::Instructions::*;
+use crate::Operations::*;
+use crate::Payload::PayloadType;
+use crate::Types::Byte;
+use std::collections::HashMap;
+
+pub struct InstructionTable {
+    table: HashMap<Byte, Instruction>,
+}
+
+impl Default for InstructionTable {
+    fn default() -> Self {
+        Self {
+            table: HashMap::new(),
+        }
+    }
+}
+
+impl InstructionTable {
+    #[inline]
+    pub fn New() -> Self {
+        let mut table = InstructionTable::default();
+
+        table.Insert(Instruction::New(NOP, "nop", PayloadType::Nothing, Nothing));
+        table.Insert(Instruction::New(HLT, "hlt", PayloadType::Nothing, Halt));
+
+        table
+    }
+
+    #[inline]
+    pub fn IsEmpty(&self) -> bool {
+        self.table.is_empty()
+    }
+
+    #[inline]
+    pub fn Get(&self, code: Byte) -> Option<&Instruction> {
+        self.table.get(&code)
+    }
+
+    #[inline]
+    pub fn Insert(&mut self, instr: Instruction) {
+        self.table.insert(instr.code, instr);
+    }
+}