! :folding=indent:collapseFolds=1:

! $Id$
!
! Copyright (C) 2004 Slava Pestov.
! 
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
! 
! 1. Redistributions of source code must retain the above copyright notice,
!    this list of conditions and the following disclaimer.
! 
! 2. Redistributions in binary form must reproduce the above copyright notice,
!    this list of conditions and the following disclaimer in the documentation
!    and/or other materials provided with the distribution.
! 
! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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IN: compiler
USE: inference
USE: errors
USE: hashtables
USE: kernel
USE: lists
USE: math
USE: namespaces
USE: parser
USE: prettyprint
USE: stdio
USE: strings
USE: unparser
USE: vectors
USE: words

: supported-cpu? ( -- ? )
    cpu "unknown" = not ;

: check-architecture ( -- )
    supported-cpu? [
        "Unsupported CPU; compiler disabled" throw
    ] unless ;

: compiling ( word -- word parameter )
    check-architecture
    "verbose-compile" get [
        "Compiling " write dup . flush
    ] when
    dup word-parameter ;

: (compile) ( word -- )
    #! Should be called inside the with-compiler scope.
    compiling dataflow optimize linearize simplify generate ;

: precompile ( word -- )
    #! Print linear IR of word.
    [
        word-parameter dataflow optimize linearize simplify [.]
    ] with-scope ;

: compile-postponed ( -- )
    compile-words get [
        uncons compile-words set (compile) compile-postponed
    ] when* ;

: compile ( word -- )
    [ postpone-word compile-postponed ] with-compiler ;

: compiled ( -- )
    #! Compile the most recently defined word.
    "compile" get [ word compile ] when ; parsing

: cannot-compile ( word error -- )
    "verbose-compile" get [
        "Cannot compile " write swap .
        default-error-handler
    ] [
        2drop
    ] ifte ;

: try-compile ( word -- )
    [ compile ] [ [ cannot-compile ] when* ] catch ;

: compile-all ( -- )
    #! Compile all words.
    [ try-compile ] each-word ;