Sync from upstream.

This sync simply re-runs the sync from ag/17226641, but with a fix in
the export script that will prevent
proto/icing/query/list_filter/syntax.proto from being exported.

Change-Id: Iffbb68b6be93410350859ebeae4737518804ae7f

1 files changed, 0 insertions, 132 deletions

diff --git a/proto/icing/query/list_filter/syntax.proto b/proto/icing/query/list_filter/syntax.proto
deleted file mode 100644
index df580a4..0000000
--- a/proto/icing/query/list_filter/syntax.proto
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright (C) 2021 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-syntax = "proto3";
-
-package icing.lib;
-
-import "google/protobuf/duration.proto";
-import "google/protobuf/struct.proto";
-import "google/protobuf/timestamp.proto";
-
-// A representation of the abstract syntax of the Common Expression Language.
-// (-- See go/api-expr for the language design. --)
-
-// An abstract representation of a common expression.
-//
-// Expressions are abstractly represented as a collection of identifiers,
-// select statements, function calls, literals, and comprehensions. All
-// operators with the exception of the '.' operator are modelled as function
-// calls. This makes it easy to represent new operators into the existing AST.
-//
-// All references within expressions must resolve to a [Decl][] provided at
-// type-check for an expression to be valid. A reference may either be a bare
-// identifier `name` or a qualified identifier `google.api.name`. References
-// may either refer to a value or a function declaration.
-//
-// For example, the expression `google.api.name.startsWith('expr')` references
-// the declaration `google.api.name` within a [Expr.Select][] expression, and
-// the function declaration `startsWith`.
-message Expr {
-  // An identifier expression. e.g. `request`.
-  message Ident {
-    // Required. Holds a single, unqualified identifier, possibly preceded by a
-    // '.'.
-    //
-    // Qualified names are represented by the [Expr.Select][] expression.
-    string name = 1;
-  }
-
-  // A field selection expression. e.g. `request.auth`.
-  message Select {
-    // Required. The target of the selection expression.
-    //
-    // For example, in the select expression `request.auth`, the `request`
-    // portion of the expression is the `operand`.
-    Expr operand = 1;
-
-    // Required. The name of the field to select.
-    //
-    // For example, in the select expression `request.auth`, the `auth` portion
-    // of the expression would be the `field`.
-    string field = 2;
-
-    // Whether the select is to be interpreted as a field presence test.
-    //
-    // This results from the macro `has(request.auth)`.
-    bool test_only = 3;
-  }
-
-  // A call expression, including calls to predefined functions and operators.
-  //
-  // For example, `value == 10`, `size(map_value)`.
-  // (-- TODO(b/65054543): Convert built-in globals to instance methods --)
-  message Call {
-    // The target of an method call-style expression. For example, `x` in
-    // `x.f()`.
-    Expr target = 1;
-
-    // Required. The name of the function or method being called.
-    string function = 2;
-
-    // The arguments.
-    repeated Expr args = 3;
-  }
-
-  // Required. An id assigned to this node by the parser which is unique in a
-  // given expression tree. This is used to associate type information and other
-  // attributes to a node in the parse tree.
-  int64 id = 2;
-
-  // Required. Variants of expressions.
-  oneof expr_kind {
-    // A constant expression.
-    Constant const_expr = 3;
-
-    // An identifier expression.
-    Ident ident_expr = 4;
-
-    // A field selection expression, e.g. `request.auth`.
-    Select select_expr = 5;
-
-    // A call expression, including calls to predefined functions and operators.
-    Call call_expr = 6;
-  }
-}
-
-// Represents a primitive literal.
-//
-// This is similar as the primitives supported in the well-known type
-// `google.protobuf.Value`, but richer so it can represent CEL's full range of
-// primitives.
-//
-// Lists and structs are not included as constants as these aggregate types may
-// contain [Expr][] elements which require evaluation and are thus not constant.
-//
-// Examples of constants include: `"hello"`, `b'bytes'`, `1u`, `4.2`, `-2`,
-// `true`, `null`.
-message Constant {
-  // Required. The valid constant kinds.
-  oneof constant_kind {
-    google.protobuf.NullValue null_value = 1;       // null value.
-    bool bool_value = 2;                            // boolean value.
-    int64 int64_value = 3;                          // int64 value.
-    uint64 uint64_value = 4;                        // uint64 value.
-    double double_value = 5;                        // double value.
-    string string_value = 6;                        // string value.
-    bytes bytes_value = 7;                          // bytes value.
-    google.protobuf.Duration duration_value = 8;    // protobuf.Duration value.
-    google.protobuf.Timestamp timestamp_value = 9;  // protobuf.Timestamp value.
-  }
-}