/tutorial/ace/example1.ace

 1-- An ACE file defines the environment for a project, together with its root
 2-- class and initial creation procedure.
 3--
 4-- ACE is an abbreviation of Assembly of Classes in Eiffel.
 5--
 6-- Use of an ACE file obviates the need for specifying many options on the
 7-- command line and ensures consistency between successive compilations or
 8-- other operations on the project. Such consistency makes it easier to test
 9-- and debug, since changes from one compilation to the next are guaranteed to
10-- be limited to coding changes rather than to changes in the compilation
11-- environment.
12--
13-- To launch the compilation with this ACE file, just type:
14--
15--               compile example1.ace
16--
17-- This is a very simple example with the most basic ACE file.
18--
19system
20       -- The system section is introduced by the keyword system followed by
21       -- the name to be given to the executable program which will be produced
22       -- by a compilation. The system name should be enclosed in double
23       -- quotes.
24   "hello"
25
26root
27       -- The root section defines the root class of the system and the initial
28       -- creation procedure. The creation procedure is the routine which is
29       -- executed first when the executable program is run; it is equivalent
30       -- to main() in a C program. This procedure must be a procedure in the
31       -- root class and must be declared as a creation procedure in that
32       -- class.
33   HELLO_WORLD: main
34
35cluster
36       -- The cluster section is introduced by the keyword cluster and defines
37       -- an ordered list of clusters. Roughly speaking, a cluster can be
38       -- considered as a directory in which Eiffel source files are to be
39       -- searched for. The order of this list of clusters is important because
40       -- clusters are considered sequentially when searching for an Eiffel
41       -- source file. The first class file found in the search is the one that
42       -- will be used.  Also note that one may only use the / character as the
43       -- directory separator.
44   "${path_tutorial}"
45   "${path_liberty_core}/loadpath.se"
46end