add go resources

cpg-language-go/src/test/resources/golang/declare.go

@@ -0,0 +1,46 @@
+package main
+
+import "fmt"
+
+func main() {
+	// Declaring multiple variables in a block with initializer. This is one
+	// GenDecl with two ValueSpec specs and one "Name" and (initializer) "Value"
+	// each.
+	//
+	// We translate this into one DeclarationStatement with two
+	// VariableDeclaration nodes
+	var (
+		a int = 1
+		b int = 2
+	)
+
+	// Declaring multiple variables in a single line. This is one GenDecl with
+	// one ValueSpec spec which contains two "Names" and two "Values" which
+	// correspond to the respective initializer values. Note, that the number of
+	// values MUST match the number of names
+	//
+	// We translate this into one DeclarationStatement with two
+	// VariableDeclaration nodes
+	var c, d = 3, 4
+
+	// Short assignment using an assignment, where all variables were not
+	// defined before. This is an AssignStmt which has DEFINE as its token.
+	//
+	// We need to split this up into several nodes. First, we translate this
+	// into one (implicit) DeclarationStatement with two VariableDeclaration
+	// nodes. Afterwards we are parsing it as a regular assignment.
+	e, f := 5, 6
+
+	// Short assignment using an assignment, where one variable (f) was defined
+	// before in the local scope. This is an AssignStmt which has DEFINE as its
+	// token. From the AST we cannot differentiate this from the previous
+	// example and we need to do a (local) variable lookup here.
+	//
+	// Finally, We need to split this up into several nodes. First, we translate
+	// this into one (implicit) DeclarationStatement with one
+	// VariableDeclaration node. Afterwards we are parsing it as a regular
+	// assignment.
+	f, g := 7, 8
+
+	fmt.Printf("%d %d %d %d %d %d %d\n", a, b, c, d, e, f, g)
+}

cpg-language-go/src/test/resources/golang/slices.go

@@ -0,0 +1,21 @@
+package main
+
+import "fmt"
+
+func main() {
+    var a = []int{1,2,3}
+
+    // [1]
+    var b = a[:1]
+
+    // [2, 3]
+    var c = a[1:]
+
+    // [1]
+    var d = a[0:1]
+
+    // [1]
+    var e = a[0:1:1]
+
+    fmt.Printf("%v %v %v %v %v", a, b, c, d, e)
+}

cpg-language-go/src/test/resources/golang/type_constraints.go

@@ -0,0 +1,8 @@
+package main
+
+type MyStruct[T any] {}
+type MyInterface{}
+
+func main() {
+    _ := &MyStruct[MyInterface]{}
+}