diff options
Diffstat (limited to 'src/boot/parser.boot')
| -rw-r--r-- | src/boot/parser.boot | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/boot/parser.boot b/src/boot/parser.boot index aa250b80..6e7a1efe 100644 --- a/src/boot/parser.boot +++ b/src/boot/parser.boot @@ -1,6 +1,6 @@ -- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. -- All rights reserved. --- Copyright (C) 2007-2009, Gabriel Dos Reis. +-- Copyright (C) 2007-2010, Gabriel Dos Reis. -- All rights reserved. -- -- Redistribution and use in source and binary forms, with or without @@ -48,14 +48,14 @@ module parser bpFirstToken()== $stok:= - null $inputStream => shoeTokConstruct("ERROR","NOMORE",shoeTokPosn $stok) + $inputStream = nil => shoeTokConstruct("ERROR","NOMORE",shoeTokPosn $stok) first $inputStream $ttok := shoeTokPart $stok true bpFirstTok()== $stok:= - null $inputStream => shoeTokConstruct("ERROR","NOMORE",shoeTokPosn $stok) + $inputStream = nil => shoeTokConstruct("ERROR","NOMORE",shoeTokPosn $stok) first $inputStream $ttok:=shoeTokPart $stok $bpParenCount>0 and $stok is ["KEY",:.] => @@ -294,14 +294,14 @@ bpListAndRecover(f)== if bpEqKey "BACKSET" then c := $inputStream - else if bpEqPeek "BACKTAB" or null $inputStream + else if bpEqPeek "BACKTAB" or $inputStream = nil then done := true else $inputStream := c bpGeneralErrorHere() bpRecoverTrap() - if bpEqPeek "BACKTAB" or null $inputStream + if bpEqPeek "BACKTAB" or $inputStream = nil then done:=true else bpNext() @@ -311,7 +311,7 @@ bpListAndRecover(f)== bpPush NREVERSE b bpMoveTo n== - null $inputStream => true + $inputStream = nil => true bpEqPeek "BACKTAB" => n=0 => true bpNextToken() @@ -522,7 +522,7 @@ bpExceptions()== bpSexpKey()== $stok is ["KEY",:.] and not bpExceptions()=> a := $ttok has SHOEINF - null a=> bpPush $ttok and bpNext() + a = nil => bpPush $ttok and bpNext() bpPush a and bpNext() false @@ -1064,7 +1064,7 @@ bpAssignLHS()== or true) bpChecknull()== a := bpPop1() - null a => bpTrap() + a = nil => bpTrap() bpPush a bpStruct()== |