From a93fdfedf36dcb909d90cbf963b087c5873bec1d Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Tue, 16 Jul 2019 21:06:17 +0300
Subject: Merge `rustc_allocator` into `libsyntax_ext`

---
 src/libsyntax/ext/allocator.rs | 53 ++++++++++++++++++++++++++++++++++++++++++
 src/libsyntax/lib.rs           |  1 +
 2 files changed, 54 insertions(+)
 create mode 100644 src/libsyntax/ext/allocator.rs

(limited to 'src/libsyntax')

diff --git a/src/libsyntax/ext/allocator.rs b/src/libsyntax/ext/allocator.rs
new file mode 100644
index 00000000000..f2c6bf27cee
--- /dev/null
+++ b/src/libsyntax/ext/allocator.rs
@@ -0,0 +1,53 @@
+#[derive(Clone, Copy)]
+pub enum AllocatorKind {
+    Global,
+    DefaultLib,
+    DefaultExe,
+}
+
+impl AllocatorKind {
+    pub fn fn_name(&self, base: &str) -> String {
+        match *self {
+            AllocatorKind::Global => format!("__rg_{}", base),
+            AllocatorKind::DefaultLib => format!("__rdl_{}", base),
+            AllocatorKind::DefaultExe => format!("__rde_{}", base),
+        }
+    }
+}
+
+pub enum AllocatorTy {
+    Layout,
+    Ptr,
+    ResultPtr,
+    Unit,
+    Usize,
+}
+
+pub struct AllocatorMethod {
+    pub name: &'static str,
+    pub inputs: &'static [AllocatorTy],
+    pub output: AllocatorTy,
+}
+
+pub static ALLOCATOR_METHODS: &[AllocatorMethod] = &[
+    AllocatorMethod {
+        name: "alloc",
+        inputs: &[AllocatorTy::Layout],
+        output: AllocatorTy::ResultPtr,
+    },
+    AllocatorMethod {
+        name: "dealloc",
+        inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout],
+        output: AllocatorTy::Unit,
+    },
+    AllocatorMethod {
+        name: "realloc",
+        inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Usize],
+        output: AllocatorTy::ResultPtr,
+    },
+    AllocatorMethod {
+        name: "alloc_zeroed",
+        inputs: &[AllocatorTy::Layout],
+        output: AllocatorTy::ResultPtr,
+    },
+];
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 3dea1977c4d..e3bc72335ab 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -165,6 +165,7 @@ pub mod print {
 
 pub mod ext {
     pub use syntax_pos::hygiene;
+    pub mod allocator;
     pub mod base;
     pub mod build;
     pub mod derive;
-- 
cgit 1.4.1-3-g733a5