320 lines
8.2 KiB
Scheme
320 lines
8.2 KiB
Scheme
;;; The packages that scsh uses/defines.
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;;; Copyright (c) 1994 by Olin Shivers.
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;;; Note: field-reader package (fr.scm) and here docs use READ-LINE.
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;;; It is defined in rdelim.scm.
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;;; You link up a scsh package by defining a package named OS-DEPENDENT
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;;; that satisfies the interfaces for packages
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;;; buffered-io-flags
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;;; posix-fdflags
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;;; posix-errno
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;;; posix-signals
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;;; Anything else it provides should be specified in an interface called
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;;; os-extras-interface. See the scsh structure below.
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;;; Then the scsh structure can be instantiated.
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;;;
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;;; The architecture directories, like next/ and irix/ and so forth,
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;;; provide packages that can serve as the os-dependent package. E.g.,
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;;; the next-defs package, defined in next/packages.
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;;;
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;;; This whole mechanism would be better solved with a functor.
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;;; -Olin
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;;; The LET-OPT package for optional argument parsing & defaulting
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;;; is found in the let-opt.scm file.
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(define-structure error-package (export error warn)
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(open signals))
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(define-structure scsh-utilities scsh-utilities-interface
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(open bitwise error-package let-opt scheme)
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(files utilities))
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;;; This guy goes into the FOR-SYNTAX part of scsh's syntax exports.
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(define-structure scsh-syntax-helpers
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(export transcribe-extended-process-form)
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(open receiving ; receive
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error-package
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syntactic ; generated?
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scsh-utilities ; check-arg
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scheme
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)
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(files syntax-helpers))
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;;; The bufpol/{block, line, none} values
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(define-structure buffered-io-flags buffered-io-flags-interface
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(open defenum-package scheme)
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(files (machine bufpol)))
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(define-structure char-set-package char-set-interface
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(open error-package ascii scheme)
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(files char-set))
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(define-structures ((tty-flags tty-flags-interface)
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(scsh-internal-tty-flags scsh-internal-tty-flags-interface))
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(open scheme ascii bitwise)
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(files (machine tty-consts)))
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(define-structure scsh-version scsh-version-interface
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(open scheme)
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(files scsh-version))
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(define-structure partial-s48-ports
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(export current-input-port current-output-port
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newline
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error-output-port
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$current-input-port
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$current-output-port
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$error-output-port)
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(open ports))
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;;; The scsh-level-0 package is for implementation convenience.
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;;; The scsh startup and top-level modules need access to scsh
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;;; procedures, but they export procedures that are themselves
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;;; part of scsh. So scsh-level-0 is the core scsh stuff, which is
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;;; imported by these two modules. These modules all collectively
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;;; export the whole scsh enchilada.
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(define-structures
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((scsh-level-0
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(compound-interface posix-fdflags-interface
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posix-errno-interface
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posix-signals-interface
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sockets-network-interface ; Standard Network Interface
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os-extras-interface ; Extra stuff from OS.
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scsh-delimited-readers-interface
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scsh-errors-interface
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scsh-io-interface
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scsh-file-interface
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scsh-process-interface
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scsh-process-state-interface
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scsh-user/group-db-interface
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scsh-command-line-interface
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scsh-signals-interface
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scsh-environment-interface
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scsh-home-interface
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scsh-string-interface
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scsh-file-names-interface
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scsh-misc-interface
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scsh-high-level-process-interface
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scsh-time-interface ; new in 0.2
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scsh-sockets-interface ; new in 0.3
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tty-interface ; new in 0.4
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scsh-version-interface
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char-set-interface
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signal-handler-interface
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;; This stuff would probably be better off kept
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;; in separate modules, but we'll toss it in for now.
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(interface-of ascii) ; char<->ascii
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string-ports-interface
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))
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(scsh-level-0-internals (export set-command-line-args!
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init-scsh-hindbrain
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init-scsh-vars))
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(scsh-regexp-package scsh-regexp-interface))
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(for-syntax (open scsh-syntax-helpers scheme))
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(open externals
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structure-refs
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cig-aux
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receiving
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defrec-package
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define-foreign-syntax
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formats
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os-dependent ; OS dependent stuff
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buffered-io-flags ; stdio dependent
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ascii
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records
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extended-ports
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partial-s48-ports
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; ports
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build
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bigbit
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bitwise
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signals
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conditions
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scsh-utilities
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handle
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fluids
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weak
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; scsh-regexp-package
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; scsh-regexp-internals
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char-set-package
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scsh-version
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tty-flags
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scsh-internal-tty-flags ; Not exported
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let-opt ; optional-arg parsing & defaulting
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interrupts ; signal handler code
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scheme
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)
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(access command-processor
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escapes
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ports ; S48's force-output
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formats
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records ; I don't think this is necessary. !!!
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scheme) ; For accessing the normal I/O operators.
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(begin (define set-batch-mode?!
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(structure-ref command-processor set-batch-mode?!))
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(define with-continuation (structure-ref escapes with-continuation)))
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(files syntax
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syscalls
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select
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fname
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stringcoll
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scsh-condition
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rw
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newports
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fdports
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procobj ; New in release 0.4.
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(machine waitcodes) ; OS dependent code.
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filesys
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fileinfo
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glob
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filemtch
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time ; New in release 0.2.
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(machine time_dep)
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network ; New in release 0.3.
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endian ; New in release 0.4.
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flock ; New in release 0.4.
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tty ; New in release 0.4.
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pty ; New in release 0.4.
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sighandlers ; New in release 0.5.
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scsh
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re
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rdelim
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))
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(define-structure defrec-package (export (define-record :syntax))
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(open records scheme)
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(for-syntax (open scheme error-package receiving))
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(files defrec))
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(define-structure defenum-package (export (define-enum-constant :syntax)
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(define-enum-constants :syntax))
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(open scheme)
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(files enumconst))
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;;; This code opens so many modules of gruesome, low-level S48 internals
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;;; that these two modules are segregated into separate packages, each
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;;; exporting just two definitions.
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(define-structure scsh-startup-package (export dump-scsh-program dump-scsh)
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(open scsh-level-0-internals ; init-scsh-* set-command-line-args!
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scsh-level-0 ; error-output-port command-line-arguments
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scsh-top-package ; parse-switches-and-execute
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handle ; with-handler
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command-processor ; user-context
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write-images ; write-image
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build-internals ; simple-condition-handler
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low-level ; flush-the-symbol-table!
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command-processor ; command-output
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filenames ; translate
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scheme-level-2-internal ; usual-resumer
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scheme)
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(files startup))
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(define-structure scsh-top-package (export parse-switches-and-execute repl)
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(open command-processor
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ensures-loaded
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environments
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error-package
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evaluation
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extended-ports
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interfaces
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interrupts
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package-commands-internal
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package-mutation
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packages
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receiving
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scsh-version
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scsh-level-0 ; with-current-input-port error-output-port
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; with-current-output-port exit
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scsh-level-0-internals ; set-command-line-args! init-scsh-vars
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scheme)
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(files top meta-arg))
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(define-structure field-reader-package scsh-field-reader-interface
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(open receiving ; receive
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char-set-package
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scsh-utilities
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error-package ; error
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scsh-level-0 ; delimited readers
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scsh-regexp-package
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let-opt ; optional-arg parsing & defaulting
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scheme
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)
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(files fr))
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(define-structures
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((awk-expander-package (export expand-awk))
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(awk-support-package (export next-range next-:range
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next-range: next-:range:)))
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(open receiving ; receive
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scsh-utilities
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error-package ; error
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scsh-regexp-package
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scheme
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)
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(files awk))
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(define-structure awk-package awk-interface
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(open awk-support-package scsh-regexp-package receiving scheme)
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(for-syntax (open awk-expander-package scheme))
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(begin (define-syntax awk expand-awk)))
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(define-structure scsh
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(compound-interface (interface-of scsh-level-0)
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(interface-of scsh-startup-package)
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scsh-regexp-interface
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scsh-field-reader-interface ; new in 0.3
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; scsh-dbm-interface
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(export repl)
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awk-interface)
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(open structure-refs
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scsh-level-0
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scsh-level-0-internals
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scsh-regexp-package
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scsh-startup-package
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; dbm
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awk-package
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field-reader-package
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scheme)
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(access scsh-top-package)
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(begin (define repl (structure-ref scsh-top-package repl))))
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(define-structure scsh-here-string-hax (export)
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(open reading
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receiving
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scsh ; Just need the delimited readers.
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features ; make-immutable!
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scheme)
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(files here))
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(define-structure test-package (export test-proc)
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(open scsh-regexp-package scheme)
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(begin (define (test-proc p)
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(regexp-substitute p
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(string-match "(foo)(.*)(bar)" "Hello foo Olin bar quux")
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'post 3 1 2 'pre))))
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