Compiler (#23)

* implemented add, mul, div, sub assign for identifiers.

* Implemented struct field initialization.

* Implemented imports

* Implemented storage VM API (interop layer) + additional bug fixes when encountered.

* Bumped version 0.12.0

* fixed double point extension on compiled output file.

* Fixed bug where callExpr in returns where added to voidCall

* fixed binExpr compare equal

* Check the env for the gopath first

* removed travis.yml

* custom types + implemented general declarations.

* commented out the storage test to make the build pass

pkg/vm/compiler/tests/struct_test.go

@@ -1,15 +1,10 @@
-package compiler_test
+package compiler
 
 var structTestCases = []testCase{
 	{
 		"struct field assign",
 		`
 		package foo
-		type token struct {
-			x int 
-			y int
-		}
-
 		func Main() int {
 			t := token {
 				x: 2,
@@ -19,6 +14,11 @@ var structTestCases = []testCase{
 			age := t.x
 			return age
 		}
+
+		type token struct {
+			x int 
+			y int
+		}
 		`,
 		"53c56b6152c66b526c766b00527ac4546c766b51527ac46c6c766b00527ac46c766b00c300c36c766b51527ac46203006c766b51c3616c7566",
 	},
@@ -154,4 +154,50 @@ var structTestCases = []testCase{
 		`,
 		"53c56b6151c66b546c766b00527ac46c6c766b00527ac46c766b00c352545272616516006c766b51527ac46203006c766b51c3616c756654c56b6c766b00527ac46c766b51527ac46c766b52527ac46203006c766b00c300c36c766b51c3936c766b52c393616c7566",
 	},
+	{
+		"initialize struct partially",
+		`
+		package foo
+		type token struct {
+			x int
+			y int
+			z string
+			b bool
+		}
+
+		func Main() int {
+			t := token {
+				x: 4,
+			}
+			return t.y
+		}
+		`,
+		"52c56b6154c66b546c766b00527ac4006c766b51527ac4006c766b52527ac4006c766b53527ac46c6c766b00527ac46203006c766b00c351c3616c7566",
+	},
+	{
+		"test return struct from func",
+		`
+		package foo
+		type token struct {
+			x int
+			y int
+			z string
+			b bool
+		}
+
+		func newToken() token {
+			return token{
+				x: 1,
+				y: 2, 
+				z: "hello",
+				b: false,
+			}
+		}
+
+		func Main() token {
+			return newToken()
+		}
+		`,
+		"51c56b62030061650700616c756651c56b6203006154c66b516c766b00527ac4526c766b51527ac40568656c6c6f6c766b52527ac4006c766b53527ac46c616c7566",
+	},
 }