From 599ca1ad890f7b8e1e3919f1727c21dad353f595 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 31 Jul 2018 20:44:54 +0300
Subject: dref-expr

---
 src/grammar.ron                   |  1 +
 src/parser/grammar/expressions.rs | 13 +++++++++++++
 src/syntax_kinds/generated.rs     |  2 ++
 3 files changed, 16 insertions(+)

(limited to 'src')

diff --git a/src/grammar.ron b/src/grammar.ron
index 564249200..aa01cb205 100644
--- a/src/grammar.ron
+++ b/src/grammar.ron
@@ -129,6 +129,7 @@ Grammar(
         "METHOD_CALL_EXPR",
         "FIELD_EXPR",
         "REF_EXPR",
+        "DEREF_EXPR",
         "STRUCT_LIT",
         "STRUCT_LIT_FIELD",
 
diff --git a/src/parser/grammar/expressions.rs b/src/parser/grammar/expressions.rs
index 5b18e2294..881d947ac 100644
--- a/src/parser/grammar/expressions.rs
+++ b/src/parser/grammar/expressions.rs
@@ -48,6 +48,7 @@ pub(super) fn expr(p: &mut Parser) {
 fn prefix_expr(p: &mut Parser) -> Option<CompletedMarker> {
     match p.current() {
         AMPERSAND => Some(ref_expr(p)),
+        STAR => Some(deref_expr(p)),
         _ => atom_expr(p),
     }
 }
@@ -66,6 +67,18 @@ fn ref_expr(p: &mut Parser) -> CompletedMarker {
     m.complete(p, REF_EXPR)
 }
 
+// test deref_expr
+// fn foo() {
+//     **&1;
+// }
+fn deref_expr(p: &mut Parser) -> CompletedMarker {
+    assert!(p.at(STAR));
+    let m = p.start();
+    p.bump();
+    expr(p);
+    m.complete(p, DEREF_EXPR)
+}
+
 fn atom_expr(p: &mut Parser) -> Option<CompletedMarker> {
     match literal(p) {
         Some(m) => return Some(m),
diff --git a/src/syntax_kinds/generated.rs b/src/syntax_kinds/generated.rs
index 655764528..a37fdea0b 100644
--- a/src/syntax_kinds/generated.rs
+++ b/src/syntax_kinds/generated.rs
@@ -120,6 +120,7 @@ pub enum SyntaxKind {
     METHOD_CALL_EXPR,
     FIELD_EXPR,
     REF_EXPR,
+    DEREF_EXPR,
     STRUCT_LIT,
     STRUCT_LIT_FIELD,
     EXTERN_BLOCK,
@@ -279,6 +280,7 @@ impl SyntaxKind {
             METHOD_CALL_EXPR => &SyntaxInfo { name: "METHOD_CALL_EXPR" },
             FIELD_EXPR => &SyntaxInfo { name: "FIELD_EXPR" },
             REF_EXPR => &SyntaxInfo { name: "REF_EXPR" },
+            DEREF_EXPR => &SyntaxInfo { name: "DEREF_EXPR" },
             STRUCT_LIT => &SyntaxInfo { name: "STRUCT_LIT" },
             STRUCT_LIT_FIELD => &SyntaxInfo { name: "STRUCT_LIT_FIELD" },
             EXTERN_BLOCK => &SyntaxInfo { name: "EXTERN_BLOCK" },
-- 
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