Consistent formatting for Dawn/Tint.

This CL updates the clang format files to have a single shared format
between Dawn and Tint. The major changes are tabs are 4 spaces, lines
are 100 columns and namespaces are not indented.

Bug: dawn:1339
Change-Id: I4208742c95643998d9fd14e77a9cc558071ded39
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/87603
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/src/tint/transform/calculate_array_length.cc b/src/tint/transform/calculate_array_length.cc
index b2ba299..c2128c7 100644
--- a/src/tint/transform/calculate_array_length.cc
+++ b/src/tint/transform/calculate_array_length.cc
@@ -31,8 +31,7 @@
 #include "src/tint/utils/map.h"
 
 TINT_INSTANTIATE_TYPEINFO(tint::transform::CalculateArrayLength);
-TINT_INSTANTIATE_TYPEINFO(
-    tint::transform::CalculateArrayLength::BufferSizeIntrinsic);
+TINT_INSTANTIATE_TYPEINFO(tint::transform::CalculateArrayLength::BufferSizeIntrinsic);
 
 namespace tint::transform {
 
@@ -41,201 +40,189 @@
 /// ArrayUsage describes a runtime array usage.
 /// It is used as a key by the array_length_by_usage map.
 struct ArrayUsage {
-  ast::BlockStatement const* const block;
-  sem::Variable const* const buffer;
-  bool operator==(const ArrayUsage& rhs) const {
-    return block == rhs.block && buffer == rhs.buffer;
-  }
-  struct Hasher {
-    inline std::size_t operator()(const ArrayUsage& u) const {
-      return utils::Hash(u.block, u.buffer);
+    ast::BlockStatement const* const block;
+    sem::Variable const* const buffer;
+    bool operator==(const ArrayUsage& rhs) const {
+        return block == rhs.block && buffer == rhs.buffer;
     }
-  };
+    struct Hasher {
+        inline std::size_t operator()(const ArrayUsage& u) const {
+            return utils::Hash(u.block, u.buffer);
+        }
+    };
 };
 
 }  // namespace
 
-CalculateArrayLength::BufferSizeIntrinsic::BufferSizeIntrinsic(ProgramID pid)
-    : Base(pid) {}
+CalculateArrayLength::BufferSizeIntrinsic::BufferSizeIntrinsic(ProgramID pid) : Base(pid) {}
 CalculateArrayLength::BufferSizeIntrinsic::~BufferSizeIntrinsic() = default;
 std::string CalculateArrayLength::BufferSizeIntrinsic::InternalName() const {
-  return "intrinsic_buffer_size";
+    return "intrinsic_buffer_size";
 }
 
-const CalculateArrayLength::BufferSizeIntrinsic*
-CalculateArrayLength::BufferSizeIntrinsic::Clone(CloneContext* ctx) const {
-  return ctx->dst->ASTNodes().Create<CalculateArrayLength::BufferSizeIntrinsic>(
-      ctx->dst->ID());
+const CalculateArrayLength::BufferSizeIntrinsic* CalculateArrayLength::BufferSizeIntrinsic::Clone(
+    CloneContext* ctx) const {
+    return ctx->dst->ASTNodes().Create<CalculateArrayLength::BufferSizeIntrinsic>(ctx->dst->ID());
 }
 
 CalculateArrayLength::CalculateArrayLength() = default;
 CalculateArrayLength::~CalculateArrayLength() = default;
 
-bool CalculateArrayLength::ShouldRun(const Program* program,
-                                     const DataMap&) const {
-  for (auto* fn : program->AST().Functions()) {
-    if (auto* sem_fn = program->Sem().Get(fn)) {
-      for (auto* builtin : sem_fn->DirectlyCalledBuiltins()) {
-        if (builtin->Type() == sem::BuiltinType::kArrayLength) {
-          return true;
+bool CalculateArrayLength::ShouldRun(const Program* program, const DataMap&) const {
+    for (auto* fn : program->AST().Functions()) {
+        if (auto* sem_fn = program->Sem().Get(fn)) {
+            for (auto* builtin : sem_fn->DirectlyCalledBuiltins()) {
+                if (builtin->Type() == sem::BuiltinType::kArrayLength) {
+                    return true;
+                }
+            }
         }
-      }
     }
-  }
-  return false;
+    return false;
 }
 
-void CalculateArrayLength::Run(CloneContext& ctx,
-                               const DataMap&,
-                               DataMap&) const {
-  auto& sem = ctx.src->Sem();
+void CalculateArrayLength::Run(CloneContext& ctx, const DataMap&, DataMap&) const {
+    auto& sem = ctx.src->Sem();
 
-  // get_buffer_size_intrinsic() emits the function decorated with
-  // BufferSizeIntrinsic that is transformed by the HLSL writer into a call to
-  // [RW]ByteAddressBuffer.GetDimensions().
-  std::unordered_map<const sem::Type*, Symbol> buffer_size_intrinsics;
-  auto get_buffer_size_intrinsic = [&](const sem::Type* buffer_type) {
-    return utils::GetOrCreate(buffer_size_intrinsics, buffer_type, [&] {
-      auto name = ctx.dst->Sym();
-      auto* type = CreateASTTypeFor(ctx, buffer_type);
-      auto* disable_validation = ctx.dst->Disable(
-          ast::DisabledValidation::kIgnoreConstructibleFunctionParameter);
-      ctx.dst->AST().AddFunction(ctx.dst->create<ast::Function>(
-          name,
-          ast::VariableList{
-              // Note: The buffer parameter requires the kStorage StorageClass
-              // in order for HLSL to emit this as a ByteAddressBuffer.
-              ctx.dst->create<ast::Variable>(
-                  ctx.dst->Sym("buffer"), ast::StorageClass::kStorage,
-                  ast::Access::kUndefined, type, true, false, nullptr,
-                  ast::AttributeList{disable_validation}),
-              ctx.dst->Param("result",
-                             ctx.dst->ty.pointer(ctx.dst->ty.u32(),
-                                                 ast::StorageClass::kFunction)),
-          },
-          ctx.dst->ty.void_(), nullptr,
-          ast::AttributeList{
-              ctx.dst->ASTNodes().Create<BufferSizeIntrinsic>(ctx.dst->ID()),
-          },
-          ast::AttributeList{}));
+    // get_buffer_size_intrinsic() emits the function decorated with
+    // BufferSizeIntrinsic that is transformed by the HLSL writer into a call to
+    // [RW]ByteAddressBuffer.GetDimensions().
+    std::unordered_map<const sem::Type*, Symbol> buffer_size_intrinsics;
+    auto get_buffer_size_intrinsic = [&](const sem::Type* buffer_type) {
+        return utils::GetOrCreate(buffer_size_intrinsics, buffer_type, [&] {
+            auto name = ctx.dst->Sym();
+            auto* type = CreateASTTypeFor(ctx, buffer_type);
+            auto* disable_validation =
+                ctx.dst->Disable(ast::DisabledValidation::kIgnoreConstructibleFunctionParameter);
+            ctx.dst->AST().AddFunction(ctx.dst->create<ast::Function>(
+                name,
+                ast::VariableList{
+                    // Note: The buffer parameter requires the kStorage StorageClass
+                    // in order for HLSL to emit this as a ByteAddressBuffer.
+                    ctx.dst->create<ast::Variable>(ctx.dst->Sym("buffer"),
+                                                   ast::StorageClass::kStorage,
+                                                   ast::Access::kUndefined, type, true, false,
+                                                   nullptr, ast::AttributeList{disable_validation}),
+                    ctx.dst->Param("result", ctx.dst->ty.pointer(ctx.dst->ty.u32(),
+                                                                 ast::StorageClass::kFunction)),
+                },
+                ctx.dst->ty.void_(), nullptr,
+                ast::AttributeList{
+                    ctx.dst->ASTNodes().Create<BufferSizeIntrinsic>(ctx.dst->ID()),
+                },
+                ast::AttributeList{}));
 
-      return name;
-    });
-  };
+            return name;
+        });
+    };
 
-  std::unordered_map<ArrayUsage, Symbol, ArrayUsage::Hasher>
-      array_length_by_usage;
+    std::unordered_map<ArrayUsage, Symbol, ArrayUsage::Hasher> array_length_by_usage;
 
-  // Find all the arrayLength() calls...
-  for (auto* node : ctx.src->ASTNodes().Objects()) {
-    if (auto* call_expr = node->As<ast::CallExpression>()) {
-      auto* call = sem.Get(call_expr);
-      if (auto* builtin = call->Target()->As<sem::Builtin>()) {
-        if (builtin->Type() == sem::BuiltinType::kArrayLength) {
-          // We're dealing with an arrayLength() call
+    // Find all the arrayLength() calls...
+    for (auto* node : ctx.src->ASTNodes().Objects()) {
+        if (auto* call_expr = node->As<ast::CallExpression>()) {
+            auto* call = sem.Get(call_expr);
+            if (auto* builtin = call->Target()->As<sem::Builtin>()) {
+                if (builtin->Type() == sem::BuiltinType::kArrayLength) {
+                    // We're dealing with an arrayLength() call
 
-          // A runtime-sized array can only appear as the store type of a
-          // variable, or the last element of a structure (which cannot itself
-          // be nested). Given that we require SimplifyPointers, we can assume
-          // that the arrayLength() call has one of two forms:
-          //   arrayLength(&struct_var.array_member)
-          //   arrayLength(&array_var)
-          auto* arg = call_expr->args[0];
-          auto* address_of = arg->As<ast::UnaryOpExpression>();
-          if (!address_of || address_of->op != ast::UnaryOp::kAddressOf) {
-            TINT_ICE(Transform, ctx.dst->Diagnostics())
-                << "arrayLength() expected address-of, got "
-                << arg->TypeInfo().name;
-          }
-          auto* storage_buffer_expr = address_of->expr;
-          if (auto* accessor =
-                  storage_buffer_expr->As<ast::MemberAccessorExpression>()) {
-            storage_buffer_expr = accessor->structure;
-          }
-          auto* storage_buffer_sem =
-              sem.Get<sem::VariableUser>(storage_buffer_expr);
-          if (!storage_buffer_sem) {
-            TINT_ICE(Transform, ctx.dst->Diagnostics())
-                << "expected form of arrayLength argument to be &array_var or "
-                   "&struct_var.array_member";
-            break;
-          }
-          auto* storage_buffer_var = storage_buffer_sem->Variable();
-          auto* storage_buffer_type = storage_buffer_sem->Type()->UnwrapRef();
+                    // A runtime-sized array can only appear as the store type of a
+                    // variable, or the last element of a structure (which cannot itself
+                    // be nested). Given that we require SimplifyPointers, we can assume
+                    // that the arrayLength() call has one of two forms:
+                    //   arrayLength(&struct_var.array_member)
+                    //   arrayLength(&array_var)
+                    auto* arg = call_expr->args[0];
+                    auto* address_of = arg->As<ast::UnaryOpExpression>();
+                    if (!address_of || address_of->op != ast::UnaryOp::kAddressOf) {
+                        TINT_ICE(Transform, ctx.dst->Diagnostics())
+                            << "arrayLength() expected address-of, got " << arg->TypeInfo().name;
+                    }
+                    auto* storage_buffer_expr = address_of->expr;
+                    if (auto* accessor = storage_buffer_expr->As<ast::MemberAccessorExpression>()) {
+                        storage_buffer_expr = accessor->structure;
+                    }
+                    auto* storage_buffer_sem = sem.Get<sem::VariableUser>(storage_buffer_expr);
+                    if (!storage_buffer_sem) {
+                        TINT_ICE(Transform, ctx.dst->Diagnostics())
+                            << "expected form of arrayLength argument to be &array_var or "
+                               "&struct_var.array_member";
+                        break;
+                    }
+                    auto* storage_buffer_var = storage_buffer_sem->Variable();
+                    auto* storage_buffer_type = storage_buffer_sem->Type()->UnwrapRef();
 
-          // Generate BufferSizeIntrinsic for this storage type if we haven't
-          // already
-          auto buffer_size = get_buffer_size_intrinsic(storage_buffer_type);
+                    // Generate BufferSizeIntrinsic for this storage type if we haven't
+                    // already
+                    auto buffer_size = get_buffer_size_intrinsic(storage_buffer_type);
 
-          // Find the current statement block
-          auto* block = call->Stmt()->Block()->Declaration();
+                    // Find the current statement block
+                    auto* block = call->Stmt()->Block()->Declaration();
 
-          auto array_length = utils::GetOrCreate(
-              array_length_by_usage, {block, storage_buffer_var}, [&] {
-                // First time this array length is used for this block.
-                // Let's calculate it.
+                    auto array_length =
+                        utils::GetOrCreate(array_length_by_usage, {block, storage_buffer_var}, [&] {
+                            // First time this array length is used for this block.
+                            // Let's calculate it.
 
-                // Construct the variable that'll hold the result of
-                // RWByteAddressBuffer.GetDimensions()
-                auto* buffer_size_result = ctx.dst->Decl(
-                    ctx.dst->Var(ctx.dst->Sym(), ctx.dst->ty.u32(),
-                                 ast::StorageClass::kNone, ctx.dst->Expr(0u)));
+                            // Construct the variable that'll hold the result of
+                            // RWByteAddressBuffer.GetDimensions()
+                            auto* buffer_size_result = ctx.dst->Decl(
+                                ctx.dst->Var(ctx.dst->Sym(), ctx.dst->ty.u32(),
+                                             ast::StorageClass::kNone, ctx.dst->Expr(0u)));
 
-                // Call storage_buffer.GetDimensions(&buffer_size_result)
-                auto* call_get_dims = ctx.dst->CallStmt(ctx.dst->Call(
-                    // BufferSizeIntrinsic(X, ARGS...) is
-                    // translated to:
-                    //  X.GetDimensions(ARGS..) by the writer
-                    buffer_size, ctx.Clone(storage_buffer_expr),
-                    ctx.dst->AddressOf(
-                        ctx.dst->Expr(buffer_size_result->variable->symbol))));
+                            // Call storage_buffer.GetDimensions(&buffer_size_result)
+                            auto* call_get_dims = ctx.dst->CallStmt(ctx.dst->Call(
+                                // BufferSizeIntrinsic(X, ARGS...) is
+                                // translated to:
+                                //  X.GetDimensions(ARGS..) by the writer
+                                buffer_size, ctx.Clone(storage_buffer_expr),
+                                ctx.dst->AddressOf(
+                                    ctx.dst->Expr(buffer_size_result->variable->symbol))));
 
-                // Calculate actual array length
-                //                total_storage_buffer_size - array_offset
-                // array_length = ----------------------------------------
-                //                             array_stride
-                auto name = ctx.dst->Sym();
-                const ast::Expression* total_size =
-                    ctx.dst->Expr(buffer_size_result->variable);
-                const sem::Array* array_type = nullptr;
-                if (auto* str = storage_buffer_type->As<sem::Struct>()) {
-                  // The variable is a struct, so subtract the byte offset of
-                  // the array member.
-                  auto* array_member_sem = str->Members().back();
-                  array_type = array_member_sem->Type()->As<sem::Array>();
-                  total_size =
-                      ctx.dst->Sub(total_size, array_member_sem->Offset());
-                } else if (auto* arr = storage_buffer_type->As<sem::Array>()) {
-                  array_type = arr;
-                } else {
-                  TINT_ICE(Transform, ctx.dst->Diagnostics())
-                      << "expected form of arrayLength argument to be "
-                         "&array_var or &struct_var.array_member";
-                  return name;
+                            // Calculate actual array length
+                            //                total_storage_buffer_size - array_offset
+                            // array_length = ----------------------------------------
+                            //                             array_stride
+                            auto name = ctx.dst->Sym();
+                            const ast::Expression* total_size =
+                                ctx.dst->Expr(buffer_size_result->variable);
+                            const sem::Array* array_type = nullptr;
+                            if (auto* str = storage_buffer_type->As<sem::Struct>()) {
+                                // The variable is a struct, so subtract the byte offset of
+                                // the array member.
+                                auto* array_member_sem = str->Members().back();
+                                array_type = array_member_sem->Type()->As<sem::Array>();
+                                total_size = ctx.dst->Sub(total_size, array_member_sem->Offset());
+                            } else if (auto* arr = storage_buffer_type->As<sem::Array>()) {
+                                array_type = arr;
+                            } else {
+                                TINT_ICE(Transform, ctx.dst->Diagnostics())
+                                    << "expected form of arrayLength argument to be "
+                                       "&array_var or &struct_var.array_member";
+                                return name;
+                            }
+                            uint32_t array_stride = array_type->Size();
+                            auto* array_length_var = ctx.dst->Decl(ctx.dst->Let(
+                                name, ctx.dst->ty.u32(), ctx.dst->Div(total_size, array_stride)));
+
+                            // Insert the array length calculations at the top of the block
+                            ctx.InsertBefore(block->statements, block->statements[0],
+                                             buffer_size_result);
+                            ctx.InsertBefore(block->statements, block->statements[0],
+                                             call_get_dims);
+                            ctx.InsertBefore(block->statements, block->statements[0],
+                                             array_length_var);
+                            return name;
+                        });
+
+                    // Replace the call to arrayLength() with the array length variable
+                    ctx.Replace(call_expr, ctx.dst->Expr(array_length));
                 }
-                uint32_t array_stride = array_type->Size();
-                auto* array_length_var = ctx.dst->Decl(
-                    ctx.dst->Let(name, ctx.dst->ty.u32(),
-                                 ctx.dst->Div(total_size, array_stride)));
-
-                // Insert the array length calculations at the top of the block
-                ctx.InsertBefore(block->statements, block->statements[0],
-                                 buffer_size_result);
-                ctx.InsertBefore(block->statements, block->statements[0],
-                                 call_get_dims);
-                ctx.InsertBefore(block->statements, block->statements[0],
-                                 array_length_var);
-                return name;
-              });
-
-          // Replace the call to arrayLength() with the array length variable
-          ctx.Replace(call_expr, ctx.dst->Expr(array_length));
+            }
         }
-      }
     }
-  }
 
-  ctx.Clone();
+    ctx.Clone();
 }
 
 }  // namespace tint::transform