Implement translation for PM_ASSOC_SPLAT_NODE

Author: egiurleo

parser/prism/Translator.cc

@@ -66,6 +66,14 @@ std::unique_ptr<parser::Node> Translator::translate(pm_node_t *node) {
 
             return make_unique<parser::Pair>(parser.translateLocation(loc), std::move(key), std::move(value));
         }
+        case PM_ASSOC_SPLAT_NODE: {
+            auto assocSplatNode = reinterpret_cast<pm_assoc_splat_node *>(node);
+            pm_location_t *loc = &assocSplatNode->base.location;
+
+            auto value = translate(assocSplatNode->value);
+
+            return make_unique<parser::Kwsplat>(parser.translateLocation(loc), std::move(value));
+        }
         case PM_BEGIN_NODE: {
             auto beginNode = reinterpret_cast<pm_begin_node *>(node);
             auto loc = &beginNode->base.location;
@@ -743,7 +751,6 @@ std::unique_ptr<parser::Node> Translator::translate(pm_node_t *node) {
         case PM_ALIAS_METHOD_NODE:
         case PM_ALTERNATION_PATTERN_NODE:
         case PM_ARRAY_PATTERN_NODE:
-        case PM_ASSOC_SPLAT_NODE:
         case PM_BACK_REFERENCE_READ_NODE:
         case PM_BLOCK_LOCAL_VARIABLE_NODE:
         case PM_CALL_AND_WRITE_NODE:

test/prism_regression/assoc_splat.parse-tree.exp

@@ -0,0 +1,59 @@
+Begin {
+  stmts = [
+    Hash {
+      kwargs = false
+      pairs = [
+        Kwsplat {
+          expr = Send {
+            receiver = NULL
+            method = <U foo>
+            args = [
+            ]
+          }
+        }
+      ]
+    }
+    Hash {
+      kwargs = false
+      pairs = [
+        Pair {
+          key = Symbol {
+            val = <U a>
+          }
+          value = Integer {
+            val = "1"
+          }
+        }
+        Kwsplat {
+          expr = Send {
+            receiver = NULL
+            method = <U foo>
+            args = [
+            ]
+          }
+        }
+      ]
+    }
+    Hash {
+      kwargs = false
+      pairs = [
+        Kwsplat {
+          expr = Send {
+            receiver = NULL
+            method = <U foo>
+            args = [
+            ]
+          }
+        }
+        Pair {
+          key = Symbol {
+            val = <U a>
+          }
+          value = Integer {
+            val = "1"
+          }
+        }
+      ]
+    }
+  ]
+}

test/prism_regression/assoc_splat.rb

@@ -0,0 +1,7 @@
+# typed: false
+
+{ **foo }
+
+# with other hash keys
+{ a: 1, **foo }
+{ **foo, a: 1 }