Add asm parser

go/asm/asm.go

@@ -7,8 +7,11 @@ import (
 
 	"github.com/alecthomas/participle/v2"
 	"github.com/alecthomas/participle/v2/lexer"
+
+	"git.defalsify.org/festive/vm"
 )
 
+
 type Asm struct {
 	Instructions []*Instruction `@@*`
 }
@@ -112,7 +115,8 @@ func Parse(s string, w io.Writer) (int, error) {
 	rd := strings.NewReader(s)
 	ast, err := asmParser.Parse("file", rd)
 	for i, v := range ast.Instructions {
-		fmt.Printf("%v %v\n", i, v)
+		op := vm.OpcodeIndex[v.OpCode]
+		fmt.Printf("%v (%v) %v\n", i, op, v)
 	}
 	return 0, err
 }

go/vm/opcodes.go

@@ -38,4 +38,21 @@ var (
 		MNEXT: "MNEXT",
 		MPREV: "MPREV",
 	}
+
+	OpcodeIndex = map[string]Opcode {
+		"NOOP": NOOP,
+		"CATCH": CATCH,
+		"CROAK": CROAK,
+		"LOAD": LOAD,
+		"RELOAD": RELOAD,
+		"MAP": MAP,
+		"MOVE": MOVE,
+		"HALT": HALT,
+		"INCMP": INCMP,
+		"MSIZE": MSIZE,
+		"MOUT": MOUT,
+		"MNEXT": MNEXT,
+		"MPREV": MPREV,
+	}
+
 )