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| author | dos-reis <gdr@axiomatics.org> | 2011-04-30 22:35:55 +0000 |
|---|---|---|
| committer | dos-reis <gdr@axiomatics.org> | 2011-04-30 22:35:55 +0000 |
| commit | 07fcfb463c0ea0ef40cc8886ee12c4dd20d9d759 (patch) | |
| tree | 53c657a088647774a6387fc010ee7097f1bd7b26 /src/interp/ptrees.boot | |
| parent | 42cf0984b569e49060252e536c0c7e7aee469873 (diff) | |
| download | open-axiom-07fcfb463c0ea0ef40cc8886ee12c4dd20d9d759.tar.gz | |
* boot/ast.boot (bfAppend): Write in full.
* interp/ptrees.boot (pfAppend): Likewise.
Diffstat (limited to 'src/interp/ptrees.boot')
| -rw-r--r-- | src/interp/ptrees.boot | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/interp/ptrees.boot b/src/interp/ptrees.boot index cbd4ac4f..4ec6f7e5 100644 --- a/src/interp/ptrees.boot +++ b/src/interp/ptrees.boot @@ -1,6 +1,6 @@ -- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. -- All rights reserved. --- Copyright (C) 2007-2010, Gabriel Dos Reis. +-- Copyright (C) 2007-2011, Gabriel Dos Reis. -- All rights reserved. -- -- Redistribution and use in source and binary forms, with or without @@ -60,7 +60,15 @@ structure %Ast == --% SPECIAL NODES pfListOf x == pfTree('listOf,x) pfListOf? x == pfAbSynOp?(x,'listOf) -pfAppend list == apply(function append,list) +pfAppend ls == + ls isnt [l,:ls] => nil + r := copyList l + p := r + repeat + ls isnt [l,:ls] => return r + l = nil => nil + lastNode(p).rest := copyList l + p := rest p pfNothing () == pfTree('nothing, []) pfNothing? form == pfAbSynOp?(form, 'nothing) |