[catapult] - Copy Telemetry's gsutilz over to third_party.

third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/protobuf_lexer.g

Index: third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/protobuf_lexer.g
diff --git a/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/protobuf_lexer.g b/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/protobuf_lexer.g
new file mode 100644
index 0000000000000000000000000000000000000000..be789b5881c5831d95433fb5ffee864978e13152
--- /dev/null
+++ b/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/protobuf_lexer.g
@@ -0,0 +1,153 @@
+/* !/usr/bin/env python
+ *
+ * Copyright 2011 Google Inc.
+ *
+ * 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.
+ */
+lexer grammar protobuf_lexer;
+
+tokens {
+    // Imaginary tree nodes.
+    ENUMS;
+    ENUM_DECL;
+    ENUM_DECLS;
+    EXTENSION_RANGE;
+    FIELD;
+    FIELDS;
+    FIELD_TYPE;
+    GROUP_MESSAGE;
+    IMPORTS;
+    MESSAGES;
+    NAME_ROOT;
+    OPTIONS;
+    OPTION_ID;
+    PROTO_FILE;
+    SERVICES;
+    USER_OPTION_ID;
+}
+
+// Basic keyword tokens.
+ENUM : 'enum';
+MESSAGE : 'message';
+IMPORT : 'import';
+OPTION : 'option';
+PACKAGE : 'package';
+RPC : 'rpc';
+SERVICE : 'service';
+RETURNS : 'returns';
+EXTEND : 'extend';
+EXTENSIONS : 'extensions';
+TO : 'to';
+GROUP : 'group';
+MAX : 'max';
+
+COMMENT
+    :   '//' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
+    |   '/*' ( options {greedy=false;} : . )* '*/' {$channel=HIDDEN;}
+    ;
+
+WS 
+    :   ( ' '
+        | '\t'
+        | '\r'
+        | '\n'
+        ) {$channel=HIDDEN;}
+    ;
+
+DATA_TYPE
+	:   'double'
+	|   'float'
+	|   'int32'
+	|   'int64'
+	|   'uint32'
+	|   'uint64'
+	|   'sint32'
+	|   'sint64'
+	|   'fixed32'
+	|   'fixed64'
+	|   'sfixed32'
+	|   'sfixed64'
+	|   'bool'
+	|   'string'
+	|   'bytes'
+	;
+
+LABEL
+	:   'required'
+	|   'optional'
+	|   'repeated'
+	;
+	
+BOOL
+	:   'true'
+	|   'false'
+	;
+
+ID
+    :   ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*
+    ;
+
+INT
+	:   '-'? ('0'..'9'+ | '0x' ('a'..'f'|'A'..'F'|'0'..'9')+ | 'inf')
+	|   'nan'
+	;
+	
+FLOAT
+    :   '-'? ('0'..'9')+ '.' ('0'..'9')* EXPONENT?
+    |   '-'? '.' ('0'..'9')+ EXPONENT?
+    |   '-'? ('0'..'9')+ EXPONENT
+    ;
+
+STRING
+    :   '"' ( STRING_INNARDS )* '"';
+
+fragment
+STRING_INNARDS
+	:   ESC_SEQ
+	|   ~('\\'|'"')
+	;
+
+fragment
+EXPONENT
+    :   ('e'|'E') ('+'|'-')? ('0'..'9')+ 
+    ;
+
+fragment
+HEX_DIGIT
+    :   ('0'..'9'|'a'..'f'|'A'..'F')
+    ;
+
+fragment
+ESC_SEQ 
+    :   '\\' ('a'|'b'|'t'|'n'|'f'|'r'|'v'|'\"'|'\''|'\\')
+    |   UNICODE_ESC
+    |   OCTAL_ESC
+    |   HEX_ESC
+    ;
+
+fragment
+OCTAL_ESC
+    :   '\\' ('0'..'3') ('0'..'7') ('0'..'7')
+    |   '\\' ('0'..'7') ('0'..'7')
+    |   '\\' ('0'..'7')
+    ;
+
+fragment
+HEX_ESC
+	:   '\\x' HEX_DIGIT HEX_DIGIT
+	;
+
+fragment
+UNICODE_ESC
+	:   '\\' 'u' HEX_DIGIT HEX_DIGIT HEX_DIGIT HEX_DIGIT
+	;