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Author SHA1 Message Date
Ludovic Courtès
f65e2b1ec5 Honor and confine expansion-time side-effects to `current-reader'.
* module/language/scheme/spec.scm (scheme)[#:reader]: Honor the
  compilation environment's `current-reader'.

* module/system/base/compile.scm (*compilation-environment*): New
  fluid.
  (current-compilation-environment): New procedure.
  (make-compilation-module): Provide a fresh `current-reader' fluid.
  (read-and-compile): Set `*compilation-environment*' appropriately.
  (compile): Likewise.

* test-suite/tests/compiler.test (read-and-compile): New.
  ("current-reader"): New test prefix.
2009-09-20 22:29:47 +02:00
Ludovic Courtès
60c6a74095 Fix copyright in `(srfi srfi-4 gnu)'. 2009-09-20 22:29:28 +02:00
Ludovic Courtès
87c595c757 Compile in a fresh module by default.
* module/system/base/compile.scm (make-compilation-module,
  language-default-environment): New procedures.
  (read-and-compile, compile): Have ENV default to
  `(language-default-environment from)'.
  (compile-and-load): Compile in `(current-module)'.

* module/system/repl/common.scm (repl-compile): Explicitly compile in
  the current module so that macro definitions are visible.

* libguile/load.c (kw_env): New variable.
  (do_try_autocompile): Call `compile-file' with `#:env (current-module)'.

* test-suite/tests/compiler.test ("psyntax")["compile uses a fresh module by
  default", "compile-time definitions are isolated"]: New tests.
  ["compile in current module"]: Specify `#:env (current-module)'.
  ["redefinition"]: Adjust.

* test-suite/tests/bytevectors.test (c&e): Explicitly compile in the
  current module so that its imports are visible.
2009-09-20 21:54:41 +02:00
Neil Jerram
f564f4784f Remove deprecation warnings from the build
* module/srfi/srfi-35.scm: Remove explicit use of (ice-9 syncase).

* test-suite/tests/r5rs_pitfall.test: Same again.

* test-suite/tests/syncase.test: Remove "(ice-9 syncase) loads" test;
  syncase is always loaded now.
2009-09-17 01:18:14 +01:00
Ludovic Courtès
0a9a6d1422 "Document" the `set-module-eval-closure!' weak hash table glitch.
* module/ice-9/boot-9.scm (set-module-eval-closure!): Add link to an
  explanation.

* test-suite/tests/gc.test ("gc")["Unused modules are removed"]:
  Increase the `cleanup' loop.
2009-09-15 22:31:45 +02:00
Ludovic Courtès
756e8a3acf Merge libguile-i18n' into libguile'.
* GUILE-VERSION (LIBGUILE_I18N_MAJOR, LIBGUILE_I18N_INTERFACE_CURRENT,
  LIBGUILE_I18N_INTERFACE_REVISION, LIBGUILE_I18N_INTERFACE_AGE,
  LIBGUILE_I18N_INTERFACE): Remove.

* doc/ref/api-i18n.texi (i18n Introduction): Don't mention
  `libguile-i18n'.

* libguile.h: Include "libguile/i18n.h".

* libguile/Makefile.am (lib_LTLIBRARIES): Remove `libguile-i18n-v*'.
  (libguile_la_SOURCES): Add `i18n.c'.
  (libguile_i18n_v_*_SOURCES, libguile_i18n_v_*_CFLAGS,
  libguile_i18n_v_*_LIBADD, libguile_i18n_v_*_LDFLAGS): Remove.

* libguile/i18n.c (scm_bootstrap_i18n): New function.

* libguile/i18n.h (scm_nl_langinfo, scm_init_i18n): Made internal.
  (scm_bootstrap_i18n): New declaration.

* libguile/init.c (scm_i_init_guile): Invoke `scm_bootstrap_i18n ()'.

* module/ice-9/i18n.scm: Load from `libguile' instead of
  `libguile-i18n-v-0'.
2009-09-14 00:42:25 +02:00
Ludovic Courtès
87e0037091 Add λ' macro as an alternative to lambda'.
* module/ice-9/boot-9.scm (λ): New macro.

* NEWS: Update.
2009-09-11 00:05:48 +02:00
Ludovic Courtès
6dc797eee9 Merge branch 'master' into boehm-demers-weiser-gc
Conflicts:
	libguile/gc_os_dep.c
2009-09-09 22:39:49 +02:00
Andy Wingo
eebff6d7f1 fix compile-time bug compiling (+ "foo" " bar")
* module/language/tree-il/primitives.scm (+, -): Avoid calling exact? on
  non-numeric args.
2009-09-06 14:15:45 +02:00
Andy Wingo
7f7b85cbf6 fix nontail loops within loops
* module/language/tree-il/compile-glil.scm (flatten): Fix compilation of
  loops within loops in non-tail positions. Will add a test case soon,
  but one way to reproduce it was with the following function:

(define (test)
  (let lp ()
    (pk 'zero)
    (let ((fk (lambda ()
                (let ((fk2 (lambda () (pk 'two))))
                  (let ((fk3 (lambda () (if #t (pk 'three) (fk2)))))
                    (if #t
                        (fk3)
                        (fk2)))))))
      (pk 'one)
      (fk))
    (lp)))

One would expect to see a sequence of "zero one three", but in fact zero
only showed once.

This should fix simplex as well.
2009-09-01 18:07:29 +02:00
Ludovic Courtès
7af531508c Merge branch 'master' into boehm-demers-weiser-gc
Conflicts:
	libguile/Makefile.am
	libguile/bytevectors.c
	libguile/gc-card.c
	libguile/gc-mark.c
	libguile/programs.c
	libguile/srcprop.c
	libguile/srfi-14.c
	libguile/symbols.c
	libguile/threads.c
	libguile/unif.c
	libguile/vm.c
2009-08-28 19:16:46 +02:00
Neil Jerram
639bf3e507 Merge branch 'ossau-gds-dev'
Conflicts:

	THANKS
2009-08-27 22:52:20 +01:00
Neil Jerram
ba5f8bf4b1 Incorporate ice-9-debugger-extensions properly
i.e. put the extensions where they need to be, and delete
ice-9-debugger-extensions.scm.

* doc/ref/api-debug.texi (Single Stepping through a Procedure's Code):
  Change mentions of (ice-9 debugging ice-9-debugger-extensions)
  module to whatever is appropriate now (or just remove them).

* module/Makefile.am (NOCOMP_SOURCES): Remove
  ice-9-debugger-extensions.scm.

* module/ice-9/debugger.scm (debug-trap): Move here from
  ice-9-debugger-extensions.scm.

* module/ice-9/debugger/command-loop.scm ("continue", "finish",
  "step", "next"): Move here from ice-9-debugger-extensions.scm.

* module/ice-9/debugger/commands.scm (assert-continuable, continue,
  finish, step, next): Move here from ice-9-debugger-extensions.scm.

* module/ice-9/debugging/breakpoints.scm: Don't use
  ice-9-debugger-extensions module.

* module/ice-9/debugging/ice-9-debugger-extensions.scm: Removed.

* module/ice-9/debugging/trace.scm, module/ice-9/debugging/traps.scm:
  Remove more old version code.

* module/ice-9/debugging/traps.scm (guile-trap-features): Hardcoded as
  '(tweaking).
2009-08-27 22:21:20 +01:00
Neil Jerram
248ee86a0b Remove superfluous ice-9-debugger-extensions code for old Guile versions
* module/ice-9/debugging/ice-9-debugger-extensions.scm: Remove all
  code checking for version < 1.7, and move code for versions >= 1.7
  up to top level.  Comment out dummy mutex definitions for now, as
  I'm not sure how to rewrite them correctly for psyntax.
2009-08-27 21:58:12 +01:00
Daniel Kraft
ff81007918 Merge branch 'master' of git://git.savannah.gnu.org/guile into elisp 2009-08-27 19:26:04 +02:00
Daniel Kraft
9a9f123144 Support circular structures in elisp reader.
* module/language/elisp/lexer.scm: Recognize circular markers.
* module/language/elisp/parser.scm: Handle them correctly.
* test-suite/tests/elisp-reader.test: Check circular structure parsing.
2009-08-27 18:49:29 +02:00
Daniel Kraft
9e90010f07 Replaced generated elisp parser with hand-written one to fix source properties.
* module/language/elisp/parser.scm: Hand-written parser.
* test-suite/tests/elisp-reader.test: Test for source properties.
2009-08-27 17:15:57 +02:00
Daniel Kraft
15eeabfd53 Don't accept backquote/unquote/unquote-splicing any longer in elisp.
The real names \`, \, and \,@ should be used instead and are returned
now by the real reader.

* module/language/elisp/compile-tree-il.scm: Only accept correct names.
2009-08-27 16:19:03 +02:00
Andy Wingo
3bcf189ba0 Revert "eval is actually compile"
This reverts commit afe5e6baa7.
2009-08-27 01:25:52 +02:00
Daniel Kraft
98c2d75a15 Error in lexer when 'empty' symbol would have been read. 2009-08-26 22:03:01 +02:00
Daniel Kraft
e840cc6540 Parser for elisp and use it as reader.
* module/language/elisp/parser.scm: New parser file.
* module/language/elisp/lexer.scm: Fix lexer/1 and add unquote-splicing support.
* module/language/elisp/spec.scm: Use new elisp-reader.
* module/language/elisp/README: Document we've got a reader now.
* test-suite/tests/elisp-reader.test: Test the parser.
2009-08-26 21:36:37 +02:00
Daniel Kraft
ddb4364b1a get-lexer/1 for elisp that finishes after the first full expression is read.
* module/language/elisp/lexer.scm: Add get-lexer/1.
* test-suite/tests/elisp-reader.test: Test lexer/1.
2009-08-26 21:03:06 +02:00
Daniel Kraft
5b1ee3bef1 Character and string literal support for the elisp lexer.
* module/language/elisp/lexer.scm: Handle character and string literals.
* test-suite/tests/elisp-reader.test: Test it.
2009-08-26 19:48:06 +02:00
Daniel Kraft
25512a940b A first, rough lexer for elisp still missing some stuff.
* module/language/elisp/lexer.scm: New lexer file.
* test-suite/Makefile.am: Register elisp-reader.test as new test.
* test-suite/tests/elisp-reader.test: New test-case.
2009-08-26 14:32:48 +02:00
Andy Wingo
c6a1380bde Merge commit 'origin/master'
Conflicts:
	libguile/unif.c
2009-08-25 21:43:00 +02:00
Andy Wingo
108e18b18a Merge wip-array refactor, up to cd43fdc5b7
Conflicts:
	NEWS
	libguile/print.c
2009-08-25 18:04:02 +02:00
Michael Gran
889975e51a Add full Unicode capability to ports and the default reader
Ports are given two additional properties: a character encoding and
a conversion failure strategy.  These properties have getters and setters.
The new properties are used to convert any locale text to/from the
internal representation of strings.

If unspecified, ports use a default value. The default value of these
properties is held in a fluid.  The default character encoding can be
modified by calling setlocale.

ISO-8859-1 is treated specially.  Since it is a native encoding of
strings, it can be processed more quickly.  Source code is assumed to be
ISO-8859-1 unless otherwise specified.  The encoding of a source code
file can be given as 'coding: XXXXX' in a magic comment at the top of a
file.

The C functions that deal with encoding often use a null pointer
as shorthand for the native Latin-1 encoding, for efficiency's sake.

* test-suite/tests/encoding-iso88591.test: new tests
* test-suite/tests/encoding-iso88597.test: new tests
* test-suite/tests/encoding-utf8.test: new tests
* test-suite/tests/encoding-escapes.test: new tests
* test-suite/tests/numbers.test: declare 'binary' encoding
* test-suite/tests/ports.test: declare 'binary' encoding
* test-suite/tests/r6rs-ports.test: declare 'binary' encoding

* module/system/base/compile.scm (compile-file): use source-code
  file's self-declared encoding when compiling files

* libguile/strports.c: store string ports in locale encoding
  (scm_strport_to_locale_u8vector, scm_call_with_output_locale_u8vector)
  (scm_open_input_locale_u8vector, scm_get_output_locale_u8vector):
  new functions

* libguile/strings.h: new declaration for scm_i_string_contains_char

* libguile/strings.c (scm_i_string_contains_char): new function
  (scm_from_stringn, scm_to_stringn):  use NULL for Latin-1
  (scm_from_locale_stringn, scm_to_locale_stringn): respect character
  encoding of input and output ports

* libguile/read.h: declaration for scm_scan_for_encoding

* libguile/read.c:
  (read_token): now takes scheme string instead of C string/length
  (read_complete_token): new function
  (scm_read_sexp, scm_read_number, scm_read_mixed_case_symbol)
  (scm_read_number_and_radix, scm_read_quote, scm_read_semicolon_comment)
  (scm_read_srfi4_vector, scm_read_bytevector, scm_read_guile_bit_vector)
  (scm_read_scsh_block_comment, scm_read_commented_expression)
  (scm_read_extended_symbol, scm_read_sharp_extension, scm_read_shart)
  (scm_read_expression): use scm_t_wchar for char type, use read_complete_token
  (scm_scan_for_encoding): new function to find a file's character encoding
  (scm_file_encoding): new function to find a port's character encoding

* libguile/rdelim.c: don't unpack strings

* libguile/print.h: declaration for modified function
  scm_i_charprint

* libguile/print.c: use locale when printing characters and
  strings
  (scm_i_charprint): input parameter is now scm_t_wchar
  (scm_simple_format): don't unpack strings

* libguile/posix.h: new declaration for scm_setbinary.

* libguile/posix.c (scm_setlocale): set default and stdio port
  encodings based on the locale's character encoding
  (scm_setbinary): new function

* libguile/ports.h (scm_t_port): add encoding and failed
  conversion handler to port type.  Declarations for new or modified
  functions scm_getc, scm_unget_byte, scm_ungetc,
  scm_i_get_port_encoding, scm_i_set_port_encoding_x,
  scm_port_encoding, scm_set_port_encoding_x,
  scm_i_get_conversion_strategy, scm_i_set_conversion_strategy_x,
  scm_port_conversion_strategy, scm_set_port_conversion_strategy_x.

* libguile/ports.c: assign the current ports to zero on startup so
  we can see if they've been set.
  (scm_current_input_port, scm_current_output_port,
  scm_current_error_port): return #f if the port is not yet
  initialized
  (scm_new_port_table_entry): set up a new port's encoding and
  illegal sequence handler based on the thread's current defaults
  (scm_i_remove_port): free port encoding name when port is removed
  (scm_i_mode_bits_n): now takes a scheme string instead of a c
  string and length.  All callers changed.
  (SCM_MBCHAR_BUF_SIZE): new const
  (scm_getc): new function, since the scm_getc in inline.h is now
  scm_get_byte_or_eof.  This pulls one codepoint from a port.
  (scm_lfwrite_substr, scm_lfwrite_str): now uses port's encoding
  (scm_unget_byte): new function, incorportaing the low-level functionality
  of scm_ungetc
  (scm_ungetc): uses scm_unget_byte

* libguile/numbers.h (scm_t_wchar): compilation order problem with
  scm_t_wchar being use in functions in multiple headers.  Forward
  declare scm_t_wchar.

* libguile/load.c (scm_primitive_load): scan for file encoding at
  top of file and use it to set the load port's encoding

* libguile/inline.h (scm_get_byte_or_eof): new function
  incorporating most of the functionality of scm_getc.

* libguile/fports.c (fport_fill_input): now returns scm_t_wchar

* libguile/chars.h (scm_t_wchar): avoid compilation order problem
  with declaration of scm_t_wchar
2009-08-25 07:54:37 -07:00
Andy Wingo
afe5e6baa7 eval is actually compile
* module/ice-9/boot-9.scm (eval): Here at the tail of boot-9, replace
  the root definition of `eval' with a procedure that will call
  `compile'.

* test-suite/tests/syntax.test ("top-level define"):
  ("internal define"): Run unmemoization tests in the interpreter, using
  primitive-eval.
2009-08-20 18:52:51 +02:00
Andy Wingo
12136c7148 define @bind using syntax-case
* module/ice-9/boot-9.scm (@bind): Define a VM-compatible syntax
  definition for this old evaluator primitive.

* test-suite/tests/dynamic-scope.test: Change the expected error
  messages.
2009-08-20 18:52:50 +02:00
Andy Wingo
b7946e9ec6 push new frame on stack before procedure & args
* libguile/_scm.h (SCM_OBJCODE_MINOR_VERSION): Bump

* libguile/vm-engine.c (vm_engine): Push a frame corresponding to the
  mv-call.

* libguile/vm-i-system.c: Renumber ops.
  (new-frame): New op, pushes a frame.
  (call, mv-call): No need to shuffle args, though we do need to pop the
  frame in the non-vm call case.
  (goto/args): Inconsequential tweaks.
  (call/cc): Push a frame if needed.

* module/language/tree-il/compile-glil.scm (flatten): Emit `new-frame'
  as appropriate.

* test-suite/tests/tree-il.test: Fix to expect new-frame.
2009-08-20 18:52:50 +02:00
Michael Gran
f8ba2bb911 Rename string-width to string-bytes-per-char
* libguile/strings.h: rename scm_string_width to scm_string_bytes_per_char

* libguile/strings.c (scm_string_width): renamed to scm_string_bytes_per_char
  (scm_string_bytes_per_char): renamed from scm_string_width

* module/language/assembly/compile-bytecode.scm (write-bytecode): string-width
  -> string-bytes-per-char

* module/language/glil/compile-assembly.scm (dump-object): string-width
  -> string-bytes-per-char
2009-08-19 22:15:22 -07:00
Andy Wingo
7f171dbfa0 remove (ice-9 lineio)'s dependency on (ice-9 readline)
* module/ice-9/lineio.scm: Use (ice-9 rdelim) instead of (ice-9
  readline) to remove readline dependency.
2009-08-18 17:52:46 +02:00
Andy Wingo
9591a2b016 `load' autocompiles
* libguile/load.h:
* libguile/load.c (scm_sys_warn_autocompilation_enabled): New primitive,
  not exported. Since `load' autocompiles now, it should warn in the
  same way that the bits hardcoded into C warn.
  (scm_try_autocompile): Use scm_sys_warn_autocompilation_enabled.

* module/ice-9/boot-9.scm (autocompiled-file-name): New helper.
  (load): Try autocompiling the argument, if appropriate. Will
  autocompile files passed on Guile's command line. `primitive-load' is
  unaffected.
2009-08-18 11:06:04 +02:00
Ludovic Courtès
fbb857a472 Merge branch 'master' into boehm-demers-weiser-gc
Conflicts:
	lib/Makefile.am
	libguile/Makefile.am
	libguile/frames.c
	libguile/gc-card.c
	libguile/gc-freelist.c
	libguile/gc-mark.c
	libguile/gc-segment.c
	libguile/gc_os_dep.c
	libguile/load.c
	libguile/macros.c
	libguile/objcodes.c
	libguile/programs.c
	libguile/strings.c
	libguile/vm.c
	m4/gnulib-cache.m4
	m4/gnulib-comp.m4
	m4/inline.m4
2009-08-18 00:06:45 +02:00
Ludovic Courtès
54b38caf19 Add proper --help' and --version' for `guile-tools compile'.
* configure.ac: Produce `meta/guile-tools'.

* meta/Makefile.am (EXTRA_DIST): Add `guile-tools.in'.
  (bin_SCRIPTS): Remove `guile-tools'.

* meta/uninstalled-env.in (PATH): Add "${top_builddir}/meta".

* module/scripts/compile.scm (%options): Add `--version'.
  (parse-args): Show the offending option name upon error.
  (show-version): New.
  (compile): Use `%guile-bug-report-address'.
2009-08-15 14:18:57 +02:00
Ludovic Courtès
e3c9c676ae Uncomment run-time objcode alignment check.
This should now work thanks to the changes in
28b119ee3d ("make sure all programs are
8-byte aligned").  This commit is a follow-up to
ec99fe8ecb ("Add FIXMEs about misaligned
objcode-metas.").

* libguile/objcodes.c (scm_c_make_objcode_slice): Uncomment assertion
  that checks for proper alignment of PTR.

* module/language/assembly/compile-bytecode.scm (write-bytecode): Update
  comment about META's alignment.
2009-08-13 23:59:51 +02:00
Ludovic Courtès
16f451f308 Allow fresh modules to be passed to `compile'.
* module/ice-9/boot-9.scm (module-name): When making MOD non-anonymous,
  bind it in the `(%app modules)' name space.

* test-suite/tests/compiler.test ("psyntax")["compile in current
  module", "compile in fresh module"]: New tests.

* test-suite/tests/modules.test ("foundations")["modules don't remain
  anonymous"]: New test.
2009-08-13 15:57:01 +02:00
Ludovic Courtès
b9434165b6 Allow redefinitions in compiled code as in `(define round round)'.
* module/ice-9/psyntax-pp.scm: Regenerate.

* module/ice-9/psyntax.scm (chi-top)[define-form]: If a same-named
  imported variable exists, take its value instead of `#f'.

* test-suite/tests/compiler.test ("psyntax")["redefinition"]: New tests.
2009-08-13 15:50:37 +02:00
Andy Wingo
98850fd727 update docs for recent vm/compiler work
* doc/ref/compiler.texi:
* doc/ref/vm.texi: Update for recent changes.
* module/language/assembly/disassemble.scm (disassemble-load-program):
  Don't print nops, they are distracting.
2009-08-12 23:38:05 +02:00
Andy Wingo
aaae0d5ab3 "fix" <let>-bound lambda expressions too
* module/language/tree-il/compile-glil.scm (compile-glil): Compute
  warnings before optimizing, as unreferenced variables will be
  optimized out.

* libguile/_scm.h: Fix C99 comment.

* module/language/tree-il/fix-letrec.scm (partition-vars): Also analyze
  let-bound vars.
  (fix-letrec!): Fix a bug whereby a set! to an unreffed var would be
  called for value, not effect. Also "fix" <let>-bound lambda
  expressions -- really speeds up pmatch.

* test-suite/tests/tree-il.test ("lexical sets", "the or hack"): Update
  to take into account the new optimizations.
2009-08-12 21:29:08 +02:00
Andy Wingo
94ff26b96b rework the vm support for wide strings
* libguile/_scm.h (SCM_OBJCODE_MINOR_VERSION): Bump.

* libguile/vm-engine.c (vm_error_bad_wide_string_length): New error
  case.

* libguile/vm-i-loader.c (load-unsigned-integer, load-integer)
  (load-keyword): Remove these instructions. The former two are
  obsoleted by make-int64/make-uint64, the latter via make-keyword.
  (load-string): Only handle narrow strings.
  (load-symbol): Only handle narrow symbols. The wide case is handled
  via make-symbol.
  (load-wide-string): New instruction, for wide strings.

* libguile/vm-i-system.c (define): Move here from loaders.c, as now it
  just takes a sym on the stack.
  (make-keyword, make-symbol): New instructions.

* module/language/assembly.scm: Remove removed instructions. No more
  width byte in load-string etc.

* module/language/assembly/compile-bytecode.scm (write-bytecode): Adapt
  to change in instruction set.

* module/language/glil/compile-assembly.scm (glil->assembly): Compile
  define by pushing the sym then emitting (define).
  (dump-object): Dump narrow and wide strings differently. Use
  make-keyword and make-symbol as appropriate.

* module/language/tree-il/compile-glil.scm (flatten): When compiling a
  ref to a primitive (not a call), first see if the primitive is
  actually bound in the root module. (That's not the case with e.g.
  bytevector-u8-ref).

* module/system/xref.scm (program-callee-rev-vars): Don't parse out
  "nexts".

* test-suite/tests/asm-to-bytecode.test ("compiler"): Adapt to bytecode
  format change.
2009-08-12 16:34:05 +02:00
Michael Gran
6cf4830798 Fix disassembly of strings and symbols
* module/language/assembly/decompile-bytecode.scm (decode-bytecode):
  fix disassembly of strings, symbols, keywords, and defines
2009-08-12 00:26:12 -07:00
Andy Wingo
eb1482ac46 debitrot the ecmascript compiler
* module/Makefile.am (ECMASCRIPT_LANG_SOURCES):
* module/language/ecmascript/compile-ghil.scm:
* module/language/ecmascript/compile-tree-il.scm: SOURCES): Replace the
  GHIL compiler with a ->tree-il compiler. Not fully functional, but the
  basics work.

* module/language/ecmascript/spec.scm: Only include the tree-il compiler.

* module/language/ecmascript/tokenize.scm (read-punctuation): Avoid
  mutating a constant.
2009-08-12 00:14:44 +02:00
Michael Gran
aa131e9e67 Merge commit 'origin/master' 2009-08-08 02:35:08 -07:00
Michael Gran
9c44cd4559 Add Unicode strings and symbols
This adds full Unicode strings as a datatype, and it adds some
minimal functionality.  The terminal and port encoding is assumed
to be ISO-8859-1.  Non-ISO-8859-1 characters are written or
input as string character escapes.

The string character escapes now have 3 forms: \xXX \uXXXX and
\UXXXXXX, for unprintable characters that have 2, 4 or 6 hex digits.

The process for writing to strings has been modified.  There is now a
function scm_i_string_start_writing that does the copy-on-write
conversion if necessary.

To compile strings that may be wide, the VM storage of strings and
string-likes has changed.

Most string-using functions have not yet been updated and may break
when used with wide strings.


        * module/language/assembly/compile-bytecode.scm (write-bytecode):
        use variable width string bytecode format

        * module/language/assembly.scm (byte-length): use variable width
        bytecode format

        * libguile/vm-i-loader.c (load-string, load-symbol):
        (load-keyword, define): use variable-width bytecode format

        * libguile/vm-engine.h (FETCH_WIDTH): new macro

        * libguile/strings.h: new declarations

        * libguile/strings.c (make_wide_stringbuf): new function
        (widen_stringbuf): new function
        (scm_i_make_wide_string): new function
        (scm_i_is_narrow_string): new function
        (scm_i_string_wide_chars): new function
        (scm_i_string_start_writing): new function
        (scm_i_string_ref): new function
        (scm_i_string_set_x): new function
        (scm_i_is_narrow_symbol): new function
        (scm_i_symbol_wide_chars, scm_i_symbol_ref): new function
        (scm_string_width): new function
        (unistring_escapes_to_guile_escapes): new function
        (scm_to_stringn): new function
        (scm_i_stringbuf_free): modify for wide strings
        (scm_i_substring_copy): modify for wide strings
        (scm_i_string_chars, scm_string_append): modify for wide strings
        (scm_i_make_symbol, scm_to_locale_stringn): modify for wide strings
        (scm_string_dump, scm_symbol_dump, scm_to_locale_stringbuf):
        (scm_string, scm_i_deprecated_string_chars): modify for wide strings
        (scm_from_locale_string, scm_from_locale_stringn): add null test

        * libguile/srfi-13.c: add calls for scm_i_string_start_writing for
        each call of scm_i_string_stop_writing
        (scm_string_for_each): modify for wide strings

        * libguile/socket.c: add calls for scm_i_string_start_writing for each
        call of scm_i_string_stop_writing

        * libguile/rw.c: add calls for scm_i_string_start_writing for each
        call of scm_i_string_stop_writing

        * libguile/read.c (scm_read_string): allow reading of wide strings

        * libguile/print.h: add declaration for scm_charprint

        * libguile/print.c (iprin1): print wide strings and add new string
        escapes
        (scm_charprint): new function

        * libguile/ports.h: new declarations for scm_lfwrite_substr and
        scm_lfwrite_str

        * libguile/ports.c (update_port_lf): new function
        (scm_lfwrite): use update_port_lf
        (scm_lfwrite_substr): new function
        (scm_lfwrite_str): new function

        * test-suite/tests/asm-to-bytecode.test ("compiler"): add string
        width byte to sting-like asm tests
2009-08-08 02:35:00 -07:00
Andy Wingo
d97b69d9cd lambda, the ultimate goto
* module/language/tree-il/analyze.scm (analyze-lexicals): Rework to
  actually determine when a fixed-point procedure may be allocated as a
  label.
* module/language/tree-il/compile-glil.scm (emit-bindings): Always emit
  a <glil-bind>. Otherwise it's too hard to pair with unbindings.
  (flatten-lambda): Consequently, here we only `bind' if there are any
  vars to bind. This doesn't make any difference, given that lambdas
  don't have trailing unbind instructions, but it does keep the GLIL
  output the same for thunks -- no extraneous (bind) instructions. Keeps
  tree-il.test happy.
  (flatten): Some bugfixes. Yaaay, it works!!!
2009-08-07 19:06:15 +02:00
Andy Wingo
230cfcfb3e implement compilation of label-allocated lambda expressions
* module/language/tree-il/compile-glil.scm (flatten-lambda, flatten):
  Implement compilation of label-allocated lambda expressions. Quite
  tricky, we'll see if this works when the new analyzer lands.
2009-08-07 17:44:02 +02:00
Andy Wingo
9059993fe0 add label alist to lambda allocations in tree-il->glil compiler
* module/language/tree-il/analyze.scm: Add some more comments about
  something that will land in a future commit: compiling fixpoint
  lambdas as labels.
  (analyze-lexicals): Reorder a bit, and add a label alist to procedure
  allocations. Empty for now.

* module/language/tree-il/compile-glil.scm (flatten): Adapt to the free
  variables being in the cddr of the allocation, not the cdr.
2009-08-07 15:35:53 +02:00
Andy Wingo
9b29d60791 loop detection in the house
* libguile/vm-i-scheme.c (vector-ref, vector-set): Sync registers if we
  call out to C.

* module/language/tree-il/compile-glil.scm (flatten-lambda): Add an
  extra argument, the self-label, which should be the gensym under which
  the procedure is bound in a <fix> expression.
  (flatten): If we see a call to a lexical ref to the self-label in a
  tail position, rename and goto instead of goto/args, which will tear
  down the frame -- or will, in the future. It's a primitive form of
  loop detection.

* module/language/tree-il/primitives.scm (zero?): Expand to (= x 0).
2009-08-06 17:46:38 +02:00
Andy Wingo
80af116875 actually implement "fixing letrec"
* module/Makefile.am (SOURCES): Reorganize so GHIL is compiled last,
  along with ecmascript.

* module/language/scheme/spec.scm: Remove references to GHIL, as it's
  bitrotten and obsolete..

* module/language/tree-il.scm (make-tree-il-folder): Rework so that we
  only have down and up procs, and call down and up on each element.
* module/language/tree-il/analyze.scm (analyze-lexicals): Fix a thinko
  handling let-values.

* module/language/tree-il/fix-letrec.scm: Actually implement fixing
  letrec. The resulting code will perform better, but violations of the
  letrec restriction are not detected. This behavior is allowed by the
  spec, but it is undesirable. Perhaps that will be fixed later.

* module/language/tree-il/inline.scm (inline!): Fix a case in which
  ((lambda args foo)) would be erroneously inlined to foo. Remove empty
  let, letrec, and fix statements.

* module/language/tree-il/primitives.scm (effect-free-primitive?): New
  public predicate.
2009-08-06 16:01:24 +02:00