Add a bunch of build hacks.

Author: nsf

decl.go

@@ -130,7 +130,7 @@ func ast_decl_class(d ast.Decl) decl_class {
 		case token.CONST:
 			return decl_const
 		case token.TYPE:
-			if t.Specs[0].(*ast.TypeSpec).Assign != 0 {
+			if isAliasTypeSpec(t.Specs[0].(*ast.TypeSpec)) {
 				return decl_type_alias
 			} else {
 				return decl_type

package_bin.go

@@ -213,14 +213,8 @@ func (p *gc_bin_parser) obj(tag int) {
 		pkg, name := p.qualifiedName()
 		typ := p.typ("")
 		p.callback(pkg, &ast.GenDecl{
-			Tok: token.TYPE,
-			Specs: []ast.Spec{
-				&ast.TypeSpec{
-					Name:   ast.NewIdent(name),
-					Assign: 1, // fake, but gocode only cares if it's there or not
-					Type:   typ,
-				},
-			},
+			Tok:   token.TYPE,
+			Specs: []ast.Spec{typeAliasSpec(name, typ)},
 		})
 
 	case typeTag:

pre_go17.go

@@ -1,4 +1,4 @@
-// +build !go1.7
+// +build !go1.7,!go1.8
 
 package main
 

type_alias_build_hack_18.go

@@ -0,0 +1,18 @@
+// +build !go1.9
+
+package main
+
+import (
+	"go/ast"
+)
+
+func typeAliasSpec(name string, typ ast.Expr) *ast.TypeSpec {
+	return &ast.TypeSpec{
+		Name: ast.NewIdent(name),
+		Type: typ,
+	}
+}
+
+func isAliasTypeSpec(t *ast.TypeSpec) bool {
+	return false
+}

type_alias_build_hack_19.go

@@ -0,0 +1,19 @@
+// +build go1.9
+
+package main
+
+import (
+	"go/ast"
+)
+
+func typeAliasSpec(name string, typ ast.Expr) *ast.TypeSpec {
+	return &ast.TypeSpec{
+		Name:   ast.NewIdent(name),
+		Assign: 1,
+		Type:   typ,
+	}
+}
+
+func isAliasTypeSpec(t *ast.TypeSpec) bool {
+	return t.Assign != 0
+}