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9 Commits

Author SHA1 Message Date
Timothy Sample 87229e4b3a Add arithmetic expansion. 
* gash/arithmetic.scm: New file.
* Makefile.am (SOURCES): Add it.
* gash/lexer.scm (get-arithmetic-expansion): New procedure.
(get-expansion): Check for "$((" and use the new procedure to read an
arithmetic expansion.
* gash/eval.scm (word->qword): Handle '<sh-arithmetic>'.
* tests/unit/eval.scm: Add tests.
* tests/spec/Makefile.am (TESTS): Add 'arith'.
* tests/spec/oil.scm: Patch seven of its tests and filter out fifteen
others.
* doc/gash.texi, doc/syntax.txt: Add '<sh-arithmetic>' syntax.
 2021-05-26 13:16:50 -04:00
Timothy Sample d3244e0ec0 Move evaluation code from 'word' to 'eval'. 
This adjustment paves the way for writing a compiler.

* gash/word.scm (eval-cmd-sub, string-not-null?, word->qword,
expand-word): Move these...
* gash/eval.scm: ...to this module.
* tests/unit/word.scm: Adjust qword tests to use 'expand-qword', and
move non-qword (evaluation) tests to...
* tests/unit/eval.scm: ...this new file, adjusting them to use
'eval-word'.
* Makefile.am (UNIT_TESTS): Add the new file.
 2021-04-19 15:11:27 -04:00
Timothy Sample 8cbb4803c8 Reset status on empty commands. 
* gash/eval.scm (exp->thunk, exps->thunk): When the expression has
value '#f', reset the status.
 2020-03-30 23:36:42 -04:00
Timothy Sample a0b6189cf3 Add basic support for asynchronous commands. 
* gash/environment.scm (*last-job*): New variable.
(get-last-job): New procedure.
(set-last-job!): New procedure.
(reap-child-processes!): New procedure.
* gash/eval.scm (eval-sh): Handle '<sh-async>'.
* gash/gash.scm (main): Reap child processes.
* gash/repl.scm (run-repl): Likewise.
* gash/shell.scm (sh:async): New procedure.
* gash/word.scm (parameter-ref): Handle "!".
 2020-03-17 17:15:36 -04:00
Timothy Sample 7fee72f5c7 Reset exit status on assignment. 
* gash/eval.scm (eval-word): Add 'on-command-substitution' keyword.
(eval-sh): On '<sh-set!>' reset the exit status unless a command
substitution has occurred.
* tests/assignments.org: Add tests.
 2019-12-08 12:18:31 -05:00
Timothy Sample 878b9c3dca Add support for Guile 2.0.9. 
* gash/compat.scm: New file.
* gash/compat/hash-table.scm: New file.
* Makefile.am: Add them.
* .dir-locals.scm: Add indentation for 'if-guile-version-below'.
* guix.scm (guile-2.0.9): New variable.
* gash/built-ins/echo.scm (escape->control): Use '#\esc'.
* gash/environment.scm: Use '(gash compat hash-table)'.
* gash/built-ins/break.scm,
gash/built-ins/cd.scm,
gash/built-ins/command.scm,
gash/built-ins/continue.scm,
gash/built-ins/dot.scm,
gash/built-ins/exec.scm,
gash/built-ins/exit.scm,
gash/built-ins/pwd.scm,
gash/built-ins/return.scm,
gash/built-ins/set.scm,
gash/built-ins/shift.scm,
gash/built-ins/trap.scm,
gash/built-ins/type.scm,
gash/built-ins/umask.scm,
gash/eval.scm,
tests/unit/automake.scm: Use '(gash compat)'.

squash! Add support for Guile 2.0.9.
 2019-05-20 18:07:47 -04:00
Jan Nieuwenhuizen 7640a09382 Support redirects with empty commands. 
* gash/eval.scm (exp->thunk): Return 'noop' if 'exp' is '#f'.
* tests/50-redirect-clobber.sh: New file.
* tests/50-redirect-clobber.stdout: New file.
* Makefile.am (FULL_TESTS): Add tests/50-redirect-clobber.sh.

Co-authored-by: Timothy Sample <samplet@ngyro.com>
 2019-05-20 01:18:36 -04:00
Timothy Sample 50473ac9d4 Add copyright sign to headers. 
* gash/built-ins/*, gash/environment.scm, gash/eval.scm,
gash/lexer.scm, gash/parser.scm, gash/repl.scm, gash/word.scm,
tests/unit/*, tools/coverage.in: Add copyright sign to headers.
 2019-05-20 01:18:22 -04:00
Timothy Sample 1bd92e2893 Remove (almost) all references to Geesh. 
gash/environment.scm: Remove file.
geesh/*: Move these files into the 'gash' folder and replace all
instances of the word 'geesh'.
scripts/geesh.in: Remove file.
HACKING, INSTALL, Makefile.am, configure.ac, guix.scm,
tests/bootstrap/bash-without-bash.scm, tests/spec/Makefile.am,
tests/spec/check-spec, tests/spec/oil.scm, tests/unit/*,
tools/coverage.in: Replace all instances of the word 'geesh'.

Co-authored-by: Jan Nieuwenhuizen <janneke@gnu.org>
 2019-05-20 01:17:40 -04:00