The R13B03 release.OTP_R13B03

1 files changed, 53 insertions, 0 deletions

diff --git a/lib/xmerl/src/xmerl_xpath_lib.erl b/lib/xmerl/src/xmerl_xpath_lib.erl
new file mode 100644
index 0000000000..cfd0e36667
--- /dev/null
+++ b/lib/xmerl/src/xmerl_xpath_lib.erl
@@ -0,0 +1,53 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2008-2009. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%
+
+%%
+-module(xmerl_xpath_lib).
+
+-include("xmerl.hrl").
+
+-export([eval/3]).
+
+-define(string(X), #xmlObj{type = string,
+			   value = X}).
+-define(number(X), #xmlObj{type = number,
+			   value = X}).
+
+
+eval(primary_expr,PrimExpr,C) ->
+    primary_expr(PrimExpr, C);
+eval(predicate,Pred,C) ->
+    xmerl_xpath_pred:eval(Pred,C).
+
+primary_expr({number, N}, _C) ->
+    ?number(N);
+primary_expr({literal, S}, _C) ->
+    ?string(S);
+primary_expr({function_call, F, Args}, C) ->
+    case xmerl_xpath_pred:core_function(F) of
+	{true, F1} ->
+	    xmerl_xpath_pred:F1(C, Args);
+	true ->
+	    xmerl_xpath_pred:F(C, Args);
+	false ->
+	    %% here, we should look up the function in the context provided 
+	    %% by the caller, but we haven't figured this out yet.
+	    exit({not_a_core_function, F})
+    end.
+