Fixes #20: Support non-builtin types for maps.

gen/decoder.go

@@ -113,13 +113,13 @@ func (g *Generator) genTypeDecoder(t reflect.Type, out string, indent int) error
 		fmt.Fprintln(g.out, ws+"} else {")
 		fmt.Fprintln(g.out, ws+"  in.Delim('{')")
 		fmt.Fprintln(g.out, ws+"  if !in.IsDelim('}') {")
-		fmt.Fprintln(g.out, ws+"  "+out+" = make("+g.getType(t)+")")
+		fmt.Fprintln(g.out, ws+"  "+out+" = make(map["+g.getType(t.Key())+"]"+g.getType(t.Elem())+")")
 		fmt.Fprintln(g.out, ws+"  } else {")
 		fmt.Fprintln(g.out, ws+"  "+out+" = nil")
 		fmt.Fprintln(g.out, ws+"  }")
 
 		fmt.Fprintln(g.out, ws+"  for !in.IsDelim('}') {")
-		fmt.Fprintln(g.out, ws+"    key := in.String()")
+		fmt.Fprintln(g.out, ws+"    key := "+g.getType(t.Key())+"(in.String())")
 		fmt.Fprintln(g.out, ws+"    in.WantColon()")
 		fmt.Fprintln(g.out, ws+"    var "+tmpVar+" "+g.getType(elem))
 

gen/encoder.go

@@ -99,7 +99,7 @@ func (g *Generator) genTypeEncoder(t reflect.Type, in string, indent int) error
 		fmt.Fprintln(g.out, ws+"  for "+tmpVar+"_name, "+tmpVar+"_value := range "+in+" {")
 		fmt.Fprintln(g.out, ws+"    if !"+tmpVar+"_first { out.RawByte(',') }")
 		fmt.Fprintln(g.out, ws+"    "+tmpVar+"_first = false")
-		fmt.Fprintln(g.out, ws+"    out.String("+tmpVar+"_name)")
+		fmt.Fprintln(g.out, ws+"    out.String(string("+tmpVar+"_name))")
 		fmt.Fprintln(g.out, ws+"    out.RawByte(':')")
 
 		g.genTypeEncoder(t.Elem(), tmpVar+"_value", indent+2)

tests/data.go

@@ -374,19 +374,26 @@ var excludedFieldValue = ExcludedField{
 }
 var excludedFieldString = `{"process":true}`
 
+type Str string
+
 type Maps struct {
 	Map          map[string]string
 	InterfaceMap map[string]interface{}
 	NilMap       map[string]string
+
+	CustomMap map[Str]Str
 }
 
 var mapsValue = Maps{
 	Map:          map[string]string{"A": "b"}, // only one item since map iteration is randomized
 	InterfaceMap: map[string]interface{}{"G": float64(1)},
+
+	CustomMap: map[Str]Str{"c": "d"},
 }
 
 var mapsString = `{` +
 	`"Map":{"A":"b"},` +
 	`"InterfaceMap":{"G":1},` +
-	`"NilMap":null` +
+	`"NilMap":null,` +
+	`"CustomMap":{"c":"d"}` +
 	`}`