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[diderot] Annotation of /branches/vis12/src/compiler/IL/exit-kind.sml
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Annotation of /branches/vis12/src/compiler/IL/exit-kind.sml

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Revision 1115 - (view) (download)
Original Path: trunk/src/compiler/IL/exit-kind.sml

1 : jhr 1115 (* exit-kind.sml
2 :     *
3 :     * COPYRIGHT (c) 2011 The Diderot Project (http://diderot-language.cs.uchicago.edu)
4 :     * All rights reserved.
5 :     *
6 :     * The CFG representation has different kinds of exits, depending on the
7 :     * context and operation.
8 :     *)
9 :    
10 :     structure ExitKind =
11 :     struct
12 :    
13 :     datatype kind
14 :     = FRAGMENT (* exit node in a CFG fragment that is going to be embedded in *)
15 :     (* other code *)
16 :     | RETURN (* return from function/method *)
17 :     | ACTIVE (* normal return from update method *)
18 :     | STABILIZE (* stabilize in update method *)
19 :     | DIE (* die in update method *)
20 :    
21 :     fun toString FRAGMENT = "FRAGMENT"
22 :     | toString RETURN = "RETURN"
23 :     | toString ACTIVE = "ACTIVE"
24 :     | toString STABILIZE = "STABILIZE"
25 :     | toString DIE = "DIE"
26 :    
27 :     end

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