369 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Factor
		
	
	
		
			Executable File
		
	
			
		
		
	
	
			369 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Factor
		
	
	
		
			Executable File
		
	
! Copyright (C) 2004, 2011 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: alien.strings slots arrays definitions generic hashtables
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summary io kernel math namespaces make prettyprint
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prettyprint.config sequences assocs sequences.private strings
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io.styles io.pathnames vectors words system splitting
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math.parser classes.mixin classes.tuple continuations
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continuations.private combinators generic.math classes.builtin
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classes compiler.units generic.standard generic.single vocabs
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init kernel.private io.encodings accessors math.order
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destructors source-files parser classes.tuple.parser
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effects.parser lexer generic.parser strings.parser vocabs.loader
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vocabs.parser source-files.errors grouping ;
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IN: debugger
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GENERIC: error-help ( error -- topic )
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M: object error-help drop f ;
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M: tuple error-help class-of ;
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M: source-file-error error-help error>> error-help ;
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GENERIC: error. ( error -- )
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M: object error. short. ;
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M: string error. print ;
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: traceback-link. ( continuation -- )
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    "[" write [ "Traceback" ] dip write-object "]" print ;
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: :s ( -- )
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    error-continuation get data>> stack. ;
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: :r ( -- )
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    error-continuation get retain>> stack. ;
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: :c ( -- )
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    error-continuation get call>> callstack. ;
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: :get ( variable -- value )
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    error-continuation get name>> assoc-stack ;
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: :res ( n -- * )
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    1 - restarts get-global nth f restarts set-global
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    continue-restart ;
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: :1 ( -- * ) 1 :res ;
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: :2 ( -- * ) 2 :res ;
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: :3 ( -- * ) 3 :res ;
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: restart. ( restart n -- )
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    [
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        1 + dup 3 <= [ ":" % # "      " % ] [ # " :res  " % ] if
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        name>> %
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    ] "" make print ;
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: restarts. ( -- )
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    restarts get [
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        nl
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        "The following restarts are available:" print
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        nl
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        [ restart. ] each-index
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    ] unless-empty ;
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: print-error ( error -- )
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    [ error. flush ] curry
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    [ [ "Error in print-error!" print drop ] with-global ]
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    recover ;
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: :error ( -- )
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    error get print-error ;
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: print-error-and-restarts ( error -- )
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    print-error
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    restarts.
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    nl
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    "Type :help for debugging help." print flush ;
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: try ( quot -- )
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    [ print-error-and-restarts ] recover ; inline
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: expired-error. ( obj -- )
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    "Object did not survive image save/load: " write third . ;
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: io-error. ( error -- )
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    "I/O error #" write third . ;
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: type-check-error. ( obj -- )
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    "Type check error" print
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    "Object: " write dup fourth short.
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    "Object type: " write dup fourth class-of .
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    "Expected type: " write third type>class . ;
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: divide-by-zero-error. ( obj -- )
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    "Division by zero" print drop ;
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HOOK: signal-error. os ( obj -- )
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: array-size-error. ( obj -- )
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    "Invalid array size: " write dup third .
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    "Maximum: " write fourth 1 - . ;
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: c-string-error. ( obj -- )
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    "Cannot convert to C string: " write third . ;
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: ffi-error. ( obj -- )
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    "FFI error" print drop ;
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: undefined-symbol-error. ( obj -- )
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    "Cannot resolve C library function" print
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    "Symbol: " write dup third symbol>string print
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    "Library: " write fourth .
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    "You are probably missing a library or the library path is wrong." print
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    "See http://concatenative.org/wiki/view/Factor/Requirements" print ;
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: stack-underflow. ( obj name -- )
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    write " stack underflow" print drop ;
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: stack-overflow. ( obj name -- )
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    write " stack overflow" print drop ;
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: datastack-underflow. ( obj -- ) "Data" stack-underflow. ;
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: datastack-overflow. ( obj -- ) "Data" stack-overflow. ;
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: retainstack-underflow. ( obj -- ) "Retain" stack-underflow. ;
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: retainstack-overflow. ( obj -- ) "Retain" stack-overflow. ;
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: callstack-underflow. ( obj -- ) "Call" stack-underflow. ;
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: callstack-overflow. ( obj -- ) "Call" stack-overflow. ;
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: memory-error. ( error -- )
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    "Memory protection fault at address " write third .h ;
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: primitive-error. ( error -- ) 
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    "Unimplemented primitive" print drop ;
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: fp-trap-error. ( error -- )
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    "Floating point trap" print drop ;
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: interrupt-error. ( error -- )
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    "Interrupt" print drop ;
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PREDICATE: vm-error < array
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    {
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        { [ dup empty? ] [ drop f ] }
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        { [ dup first "kernel-error" = not ] [ drop f ] }
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        [ second 0 18 between? ]
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    } cond ;
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: vm-errors ( error -- n errors )
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    second {
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        { 0  [ expired-error.          ] }
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        { 1  [ io-error.               ] }
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        { 2  [ primitive-error.        ] }
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        { 3  [ type-check-error.       ] }
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        { 4  [ divide-by-zero-error.   ] }
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        { 5  [ signal-error.           ] }
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        { 6  [ array-size-error.       ] }
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        { 7  [ c-string-error.         ] }
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        { 8  [ ffi-error.              ] }
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        { 9  [ undefined-symbol-error. ] }
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        { 10 [ datastack-underflow.    ] }
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        { 11 [ datastack-overflow.     ] }
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        { 12 [ retainstack-underflow.  ] }
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        { 13 [ retainstack-overflow.   ] }
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        { 14 [ callstack-underflow.    ] }
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        { 15 [ callstack-overflow.     ] }
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        { 16 [ memory-error.           ] }
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        { 17 [ fp-trap-error.          ] }
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        { 18 [ interrupt-error.        ] }
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    } ; inline
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M: vm-error summary drop "VM error" ;
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M: vm-error error. dup vm-errors case ;
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M: vm-error error-help vm-errors at first ;
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M: no-method summary
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    drop "No suitable method" ;
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M: no-method error.
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    "Generic word " write
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    dup generic>> pprint
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    " does not define a method for the " write
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    dup object>> class-of pprint
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    " class." print
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    "Dispatching on object: " write object>> short. ;
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M: bad-slot-value summary drop "Bad store to specialized slot" ;
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M: bad-slot-name summary drop "Bad slot name in object literal" ;
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M: no-math-method summary
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    drop "No suitable arithmetic method" ;
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M: no-next-method summary
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    drop "Executing call-next-method from least-specific method" ;
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M: inconsistent-next-method summary
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    drop "Executing call-next-method with inconsistent parameters" ;
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M: check-method-error summary
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    drop "Invalid parameters for create-method" ;
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M: not-a-tuple summary
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    drop "Not a tuple" ;
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M: bad-superclass summary
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    drop "Tuple classes can only inherit from non-final tuple classes" ;
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M: bad-initial-value summary
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    drop "Incompatible initial value" ;
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M: no-cond summary
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    drop "Fall-through in cond" ;
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M: no-case summary
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    drop "Fall-through in case" ;
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M: slice-error summary
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    drop "Cannot create slice" ;
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M: bounds-error summary drop "Sequence index out of bounds" ;
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M: groups-error summary drop "Non positive group size" ;
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M: condition error. error>> error. ;
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M: condition summary error>> summary ;
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M: condition error-help error>> error-help ;
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M: assert summary drop "Assertion failed" ;
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M: assert-sequence summary drop "Assertion failed" ;
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M: assert-sequence error.
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    standard-table-style [
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        [ "=== Expected:" print expected>> stack. ]
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        [ "=== Got:" print got>> stack. ] bi
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    ] tabular-output ;
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M: immutable summary drop "Sequence is immutable" ;
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M: redefine-error error.
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    "Re-definition of " write
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    def>> . ;
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M: undefined-word summary
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    word>> undefined-word?
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    "Cannot execute a deferred word before it has been defined"
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    "Cannot execute a word before it has been compiled"
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    ? ;
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M: no-compilation-unit error.
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    "Attempting to define " write
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    definition>> pprint
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    " outside of a compilation unit" print ;
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M: no-vocab summary
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    drop "Vocabulary does not exist" ;
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M: encode-error summary drop "Character encoding error" ;
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M: decode-error summary drop "Character decoding error" ;
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M: bad-create summary drop "Bad parameters to create" ;
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M: cannot-be-inline summary drop "This type of word cannot be inlined" ;
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M: attempt-all-error summary drop "Nothing to attempt" ;
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M: already-disposed summary drop "Attempting to operate on disposed object" ;
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M: no-current-vocab-error summary
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    drop "Not in a vocabulary; IN: form required" ;
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M: no-word-error summary
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    name>>
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    "No word named “"
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    "” found in current vocabulary search path" surround ;
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M: no-word-error error. summary print ;
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M: no-word-in-vocab summary
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    [ vocab>> ] [ word>> ] bi
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    [ "No word named “" % % "” found in “" % % "” vocabulary" % ] "" make ;
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M: no-word-in-vocab error. summary print ;
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M: ambiguous-use-error summary
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    words>> first name>>
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    "More than one vocabulary defines a word named “" "”" surround ;
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M: ambiguous-use-error error. summary print ;
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M: staging-violation summary
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    drop
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    "A parsing word cannot be used in the same file it is defined in." ;
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M: bad-number summary
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    drop "Bad number literal" ;
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M: duplicate-slot-names summary
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    drop "Duplicate slot names" ;
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M: invalid-slot-name summary
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    drop "Invalid slot name" ;
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M: bad-inheritance summary
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    drop "Circularity in inheritance chain" ;
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M: not-in-a-method-error summary
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    drop "call-next-method can only be called in a method definition" ;
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M: version-control-merge-conflict summary
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    drop "Version control merge conflict in source code" ;
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GENERIC: expected>string ( obj -- str )
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M: f expected>string drop "end of input" ;
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M: word expected>string name>> ;
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M: string expected>string ;
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M: unexpected error.
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    "Expected " write
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    dup want>> expected>string write
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    " but got " write
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    got>> expected>string print ;
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M: lexer-error error.
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    [ lexer-dump ] [ error>> error. ] bi ;
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M: lexer-error summary
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    error>> summary ;
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M: lexer-error compute-restarts
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    error>> compute-restarts ;
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M: lexer-error error-help
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    error>> error-help ;
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M: bad-effect summary
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    drop "Bad stack effect declaration" ;
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M: invalid-row-variable summary
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    drop "Stack effect row variables can only occur as the first input or output" ;
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M: row-variable-can't-have-type summary
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    drop "Stack effect row variables cannot have a declared type" ;
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M: bad-escape error.
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    "Bad escape code: \\" write
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    char>> 1string print ;
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M: bad-literal-tuple summary drop "Bad literal tuple" ;
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M: check-mixin-class-error summary drop "Not a mixin class" ;
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M: not-found-in-roots summary
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    path>> "Cannot resolve vocab: " prepend ;
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M: wrong-values summary drop "Quotation's stack effect does not match call site" ;
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M: stack-effect-omits-dashes summary drop "Stack effect must contain “--”" ;
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{ "threads" "debugger" } "debugger.threads" require-when
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