refactors to code generation

internal/gen/godata.go

@@ -0,0 +1,61 @@
+package gen
+
+import (
+	"github.com/mmcloughlin/avo/internal/inst"
+)
+
+type godata struct {
+}
+
+func NewGoData() Interface {
+	return GoFmt(godata{})
+}
+
+func (g godata) Generate(is []*inst.Instruction) ([]byte, error) {
+	p := &printer{}
+
+	p.Printf("package inst\n\n")
+
+	p.Printf("var Instructions = []Instruction{\n")
+
+	for _, i := range is {
+		p.Printf("{\n")
+
+		p.Printf("Opcode: %#v,\n", i.Opcode)
+		p.Printf("Summary: %#v,\n", i.Summary)
+
+		p.Printf("Forms: []Form{\n")
+		for _, f := range i.Forms {
+			p.Printf("{\n")
+
+			if f.ISA != nil {
+				p.Printf("ISA: %#v,\n", f.ISA)
+			}
+
+			if f.Operands != nil {
+				p.Printf("Operands: []Operand{\n")
+				for _, op := range f.Operands {
+					p.Printf("{Type: %#v, Action: %#v},\n", op.Type, op.Action)
+				}
+				p.Printf("},\n")
+			}
+
+			if f.ImplicitOperands != nil {
+				p.Printf("ImplicitOperands: []ImplicitOperand{\n")
+				for _, op := range f.ImplicitOperands {
+					p.Printf("{Register: %#v, Action: %#v},\n", op.Register, op.Action)
+				}
+				p.Printf("},\n")
+			}
+
+			p.Printf("},\n")
+		}
+		p.Printf("},\n")
+
+		p.Printf("},\n")
+	}
+
+	p.Printf("}\n")
+
+	return p.Result()
+}