Add support for the Go programming language.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12108 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/go/unions_runme.go

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+// This is the union runtime testcase. It ensures that values within a
+// union embedded within a struct can be set and read correctly.
+
+package main
+
+import "./unions"
+
+func main() {
+	// Create new instances of SmallStruct and BigStruct for later use
+	small := unions.NewSmallStruct()
+	small.SetJill(200)
+
+	big := unions.NewBigStruct()
+	big.SetSmallstruct(small)
+	big.SetJack(300)
+
+	// Use SmallStruct then BigStruct to setup EmbeddedUnionTest.
+	// Ensure values in EmbeddedUnionTest are set correctly for each.
+	eut := unions.NewEmbeddedUnionTest()
+
+	// First check the SmallStruct in EmbeddedUnionTest
+	eut.SetNumber(1)
+	eut.GetUni().SetSmall(small)
+	Jill1 := eut.GetUni().GetSmall().GetJill()
+	if Jill1 != 200 {
+		panic("Runtime test1 failed")
+	}
+
+	Num1 := eut.GetNumber()
+	if Num1 != 1 {
+		panic("Runtime test2 failed")
+	}
+
+	// Secondly check the BigStruct in EmbeddedUnionTest
+	eut.SetNumber(2)
+	eut.GetUni().SetBig(big)
+	Jack1 := eut.GetUni().GetBig().GetJack()
+	if Jack1 != 300 {
+		panic("Runtime test3 failed")
+	}
+
+	Jill2 := eut.GetUni().GetBig().GetSmallstruct().GetJill()
+	if Jill2 != 200 {
+		panic("Runtime test4 failed")
+	}
+
+	Num2 := eut.GetNumber()
+	if Num2 != 2 {
+		panic("Runtime test5 failed")
+	}
+}