Add rules for stdin

Author: lucic71

rules/stdio/ir_refcount.json

@@ -202,6 +202,17 @@
       "is_refcount_pointer": true
     }
   },
+  "f10": {
+    "body": [
+      {
+        "text": "libcc2rs::cin()"
+      }
+    ],
+    "return_type": {
+      "type": "Ptr<::std::fs::File>",
+      "is_refcount_pointer": true
+    }
+  },
   "f2": {
     "body": [
       {

rules/stdio/ir_unsafe.json

@@ -253,6 +253,17 @@
       "is_unsafe_pointer": true
     }
   },
+  "f10": {
+    "body": [
+      {
+        "text": "libcc2rs::cin_unsafe()"
+      }
+    ],
+    "return_type": {
+      "type": "*mut ::std::fs::File",
+      "is_unsafe_pointer": true
+    }
+  },
   "f2": {
     "body": [
       {

rules/stdio/tgt_refcount.rs

@@ -125,3 +125,7 @@ fn f8() -> Ptr<::std::fs::File> {
 fn f9() -> Ptr<::std::fs::File> {
     libcc2rs::cerr()
 }
+
+fn f10() -> Ptr<::std::fs::File> {
+    libcc2rs::cin()
+}

rules/stdio/tgt_unsafe.rs

@@ -130,3 +130,7 @@ unsafe fn f8() -> *mut ::std::fs::File {
 unsafe fn f9() -> *mut ::std::fs::File {
     libcc2rs::cerr_unsafe()
 }
+
+unsafe fn f10() -> *mut ::std::fs::File {
+    libcc2rs::cin_unsafe()
+}