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%%
%% %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.
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