Contents of /cduce/trunk/CHANGES

0.4.0pl1

- Packaging bug

0.4.0

- Adapted to OCaml 3.09.
- To build the OCaml/CDuce interface, OCaml sources are now needed.

0.3.92

- Tools:
   * Build and install dtd2cduce when PXP is available.
   * Display of location for errors and warnings compatible with OCaml.

- Language:
   * Better error messages for xtransform.

- Bug fix:
   * Forgot PLIST.godi in the package.


0.3.91

- Tools:
   * Get rid of cdo2ml and mlcduce_wrapper. Now included in cduce.

- Bug fix:
   * Internal uid collision when using OCaml externals.
   * Makes "String.length" works (String used to resolve to the CDuce type).

0.3.9

- Language:
   * Added split_atom, make_atom. Removed atom_of.
   * Added char_of_int built_in function.
   * Now int_of also accepts octal binary and hexadecimals.
   * The field access also works for XML element attributes.
   * More catchable exceptions (for load_xml, load_file, etc).
   * namespaces, schemas, "using" identifiers are now exported.
   * "open" statement.

- Implementation:
   * More efficient implementation of records at runtime.
   * Clean-up of the internal representation.
   * The XML Schemas are now parsed only at compile time.
   * The automata for pattern matching are now produced at compile time.

- Tools:
   * The functionality of cdo2ml is now assured by cduce itself, with
     the --mlstub option.
   * Remove the --dump option (which was deprecated).
   * Remove support for sessions in the web prototype.

- Bug fixes:
   * Correct handling of external references with expat.
   * Installation problem under some BSD (using "install -c").

0.3.2
   * Bug fix in configure

0.3.1

- Bug fix:
   * configure must not require pxp
   * inclusion of external entities with expat
   * META.in, cduce_mktop missing in package
   * several bugfixes for XML Schema
   * Adapt to ocaml-expat 0.9.1
   * don't build cdo2ml, mlcduce_wrapper when ocaml iface not available

- Language:
   * Can now preserve namespaces when parsing XML or when creating XML elements
   * "or" is now equivalent to ||

0.3.0

- Language:
   * Warning for capture variables and projections that always return the empty
     sequence.
   * Major rewrite of the support for XML Schema
     * removed print_schema directive
     * removed the "kind" selector (e.g. S # t as element)
     * include,import implemented
     * support wildcards any,anyAttrivbute
     * support xsi:nil
     * support xsd:decimal,xsd:float
     * many bug fixes
   * Removed the syntax  "external {...}", replaced with
     "unit.val with { ty1 ty2 ... }".
   * Removed the syntax H:val, replaced with H.val.
   * Removed the syntax S#t, replaced with S.t.
   * Overloaded the dot (record field acces, CDuce, OCaml, Schema units).
     A dot in an identifier must now be escaped with a backslash, e.g. x\.y
   * Identifiers (for types, values) are now qualified names.
   * float_of: String -> Float
   * Syntax modifications for records and attributes:
      - ".." to denote open record types/patterns:
          open record:  { l1=t1 l2=t2 .. }
          closed record: { l1=t1 l2=t2 }
      - the ";" between fields is optional even for records 
        (used to be optional only for attributes)
   * Keywords are now allowed as type names
   * Concatenation @ allowed in types
   * Record concatenation + allowed in types
   * Changed "string://" URL-pseudo schema to "string:" 
   * Better resolution of external entities for PXP and expat

- Tools:
   * A new tool cduce_mktop produces customized CDuce toplevels with embedded 
     OCaml externals.
   * Removed the validate tool.
   * Don't build dtd2cduce by default (it requires PXP). An online
     version is available at http://www.cduce.org/dtd2cduce.html

- Implementation:
   * Various bug fixes.
   * More efficient hash-consing of types.
   * improved #print_type (does not use the abbreviation for the printed type).

- Distribution:
   * MIT license.
   * CDuce can be built without support for PXP.

- CQL:
   * Rewrote the optimization (pushing projections).
   * The syntax for "where" clause is now simply an "and"-separated
     list of conditions ("or" is no longer supported).
   * Better types for "min","max","distinct_values" operators.

0.2.2

- Language:
  * Runtime type-check: (e :? t) raises an exception when e doesn't 
    have type t; the exception is an explanation of why this is not the case.
    (The actual message may change in the future.)
  * Better return type for load_xml, defined as:
    AnyXml=<(Atom) (Record)>[ (AnyXml|Char)* ]
  * New style for comments: /* ... */
    Simple and double quotes within these comments are not handled
    specially. Moreover, these comments cannot be nested.
    The new style should be used for textual comments (which can include
    the simple quote); the old style is better for ignoring pieces of code.
  * Pattern guard /p in regexps to match the current tail. This can be used
    for setting "markers" without capturing anything, e.g.:
       [ (/(x:=1) ...) | (/(x:=2) ...) ]
    Back to the old semantics for default value patterns in regexps
    (they do capture an element).
  * New syntax  {...; l = p else p'; ... }. p' is applied
    to the whole matched record when p does not match (or when
    the field is missing). Equivalent to:
    { ...; l = p; ...} | ({...;...} & p')
  * Punning in record/attribute expressions and patterns.
    { x; y } is a shorthand for {x=x;y=y}.
  * New syntax for R**n in regular expressions, equivalent
    to R...R (n times), where n > 0.
  * Interval arithmetic for the * operator.
  * Warning for potential division by 0.
  * New "system", "exit", "getenv" built-in functions.

- Toplevel, interpreter, compiler:
  * New #silent, #verbose directives.
  * New --script option.
  * Removed the warning "no caml interface".

- Compilation:
  * Better compilation of sequence capture variables.
    Now, [ ... x::Any* ] is as efficient as [ ... ; x ]. Can also be written
    [ ... /x _* ]. The [ ... ; ... ] syntax is no longer necessary
    and might be deprecated.
    
- Bug fixes, including:
  * Bug fixes in configure/Makefile for Cygwin.
  * Bug fix for the compilation of complex patterns with records.
  * Fixed a little bit support for XML Schema, but still largely broken.
  * Fix --stdin.
  * Bug fix in print_xml (do not create a namespace decl for "xml:").

- Distribution:
  * apps-cduce-cvs GODI package is updatable.
  * The release tarball does not contain the CDuce website, only
    the HTML documentation (memento, tutorial, manual).

0.2.1

- string:// scheme for load_xml and others
- code updated to OCaml 3.08.1, PXP 1.1.95
- NOTE: support for namespaces in XML Schema may be broken

0.2.0

- OCaml/CDuce interface.

- Language:
  * Support for URLs in load_xml, load_html, load_file, and schemas:
    e.g. you can write `` load_html "http://www.cduce.org/" ''
    (need either the ocurl package or the netclient package).
  * More advanced (and documented) support for XML Schemas. 
  * Preliminary integration of CQL query language that is:
    select e from p1 in e1, ... ,pn in en where e'.
  * Allow structured constants in default value patterns (p := c).
  * Default value patterns in regexps don't consume an element.
  * Logical operators &&, ||, and not.
  * New syntax for currified functions
    fun (p1 : t1)...(pn : tn) : t = ...

- Incompatible changes:
  * argv is now an operator of type [] -> [ String* ].
  * The --dump, --load, --save options are deprecated.
  * Changes to the command line. "--pxp" is replaced with "--no expat".
 
- Implementation:
  * Code upgraded to Ocaml 3.07.
  * Major cleaning in progress.
  * Added internal support for abstract data types.
  * Using ulex instead of wlex.
  * Sources can now be in utf8.
  * Separate compilation.
  * Lazy implementation of @.

- Other:
  * Added configure script.
  * Various Makefile improvements.

- Bug fixes:
  * Bug fixes in the parser. Tuples are now ok in regexps.


0.1.1
  * Various bug fixes  (expat might now work)
  * Sequencing operator   e1;e2  (equivalent to: let [] = e1 in e2)
  * Encoded references
  

0.1.0
  * Support for XML Namespaces
  * Better support for expat; clean Makefile
  * Get rid of ;; and let fun in examples
  * Optional ; for record in attribute position (values and types/patterns)
  * Split --dump into --load and --save
  * Better handling of strings (specific node in AST)
  * Map, transform: tail-recursive implementation
  * Preliminary support for XML Schema
  * Various bug fixes


0.0.91
  * Second alpha release
  * Bug fixes and syntax changes (e.g. making "fun" optional in "let fun")
  * Experimenting with expat support (see expat/README)
 

0.0.9  
  * First public release (alpha release)
1	abate	1814	0.4.0pl1
2
3			- Packaging bug
4
5	abate	1812	0.4.0
6
7			- Adapted to OCaml 3.09.
8			- To build the OCaml/CDuce interface, OCaml sources are now needed.
9
10	abate	1801	0.3.92
11	abate	1779
12			- Tools:
13			* Build and install dtd2cduce when PXP is available.
14	abate	1786	* Display of location for errors and warnings compatible with OCaml.
15	abate	1779
16			- Language:
17			* Better error messages for xtransform.
18
19	abate	1801	- Bug fix:
20			* Forgot PLIST.godi in the package.
21	abate	1779
22	abate	1801
23	abate	1772	0.3.91
24
25			- Tools:
26			* Get rid of cdo2ml and mlcduce_wrapper. Now included in cduce.
27
28			- Bug fix:
29			* Internal uid collision when using OCaml externals.
30			* Makes "String.length" works (String used to resolve to the CDuce type).
31
32	abate	1762	0.3.9
33
34			- Language:
35	abate	1694	* Added split_atom, make_atom. Removed atom_of.
36	abate	1671	* Added char_of_int built_in function.
37	abate	1698	* Now int_of also accepts octal binary and hexadecimals.
38			* The field access also works for XML element attributes.
39	abate	1762	* More catchable exceptions (for load_xml, load_file, etc).
40			* namespaces, schemas, "using" identifiers are now exported.
41			* "open" statement.
42
43			- Implementation:
44	abate	1746	* More efficient implementation of records at runtime.
45			* Clean-up of the internal representation.
46	abate	1762	* The XML Schemas are now parsed only at compile time.
47			* The automata for pattern matching are now produced at compile time.
48
49			- Tools:
50	abate	1746	* The functionality of cdo2ml is now assured by cduce itself, with
51			the --mlstub option.
52			* Remove the --dump option (which was deprecated).
53			* Remove support for sessions in the web prototype.
54	abate	1762
55			- Bug fixes:
56	abate	1746	* Correct handling of external references with expat.
57	abate	1762	* Installation problem under some BSD (using "install -c").
58	abate	1671
59	abate	1570	0.3.2
60			* Bug fix in configure
61
62	abate	1564	0.3.1
63	abate	1565
64			- Bug fix:
65	abate	1564	* configure must not require pxp
66			* inclusion of external entities with expat
67			* META.in, cduce_mktop missing in package
68	abate	1565	* several bugfixes for XML Schema
69			* Adapt to ocaml-expat 0.9.1
70			* don't build cdo2ml, mlcduce_wrapper when ocaml iface not available
71	abate	1564
72	abate	1565	- Language:
73			* Can now preserve namespaces when parsing XML or when creating XML elements
74			* "or" is now equivalent to \|\|
75
76	abate	1547	0.3.0
77	abate	1434
78	abate	1502	- Language:
79			* Warning for capture variables and projections that always return the empty
80			sequence.
81			* Major rewrite of the support for XML Schema
82			* removed print_schema directive
83			* removed the "kind" selector (e.g. S # t as element)
84			* include,import implemented
85			* support wildcards any,anyAttrivbute
86			* support xsi:nil
87			* support xsd:decimal,xsd:float
88			* many bug fixes
89			* Removed the syntax "external {...}", replaced with
90			"unit.val with { ty1 ty2 ... }".
91			* Removed the syntax H:val, replaced with H.val.
92			* Removed the syntax S#t, replaced with S.t.
93			* Overloaded the dot (record field acces, CDuce, OCaml, Schema units).
94			A dot in an identifier must now be escaped with a backslash, e.g. x\.y
95			* Identifiers (for types, values) are now qualified names.
96			* float_of: String -> Float
97	abate	1519	* Syntax modifications for records and attributes:
98			- ".." to denote open record types/patterns:
99			open record: { l1=t1 l2=t2 .. }
100			closed record: { l1=t1 l2=t2 }
101			- the ";" between fields is optional even for records
102			(used to be optional only for attributes)
103	abate	1520	* Keywords are now allowed as type names
104	abate	1524	* Concatenation @ allowed in types
105			* Record concatenation + allowed in types
106	abate	1535	* Changed "string://" URL-pseudo schema to "string:"
107			* Better resolution of external entities for PXP and expat
108	abate	1434
109	abate	1502	- Tools:
110	abate	1512	* A new tool cduce_mktop produces customized CDuce toplevels with embedded
111	abate	1502	OCaml externals.
112	abate	1504	* Removed the validate tool.
113	abate	1542	* Don't build dtd2cduce by default (it requires PXP). An online
114			version is available at http://www.cduce.org/dtd2cduce.html
115	abate	1502
116			- Implementation:
117	abate	1516	* Various bug fixes.
118			* More efficient hash-consing of types.
119			* improved #print_type (does not use the abbreviation for the printed type).
120	abate	1502
121	abate	1506	- Distribution:
122	abate	1516	* MIT license.
123	abate	1542	* CDuce can be built without support for PXP.
124	abate	1502
125	abate	1516	- CQL:
126			* Rewrote the optimization (pushing projections).
127			* The syntax for "where" clause is now simply an "and"-separated
128			list of conditions ("or" is no longer supported).
129			* Better types for "min","max","distinct_values" operators.
130	abate	1506
131	abate	1422	0.2.2
132	abate	1286
133	abate	1422	- Language:
134			* Runtime type-check: (e :? t) raises an exception when e doesn't
135			have type t; the exception is an explanation of why this is not the case.
136			(The actual message may change in the future.)
137			* Better return type for load_xml, defined as:
138			AnyXml=<(Atom) (Record)>[ (AnyXml\|Char)* ]
139			* New style for comments: /* ... */
140			Simple and double quotes within these comments are not handled
141			specially. Moreover, these comments cannot be nested.
142			The new style should be used for textual comments (which can include
143			the simple quote); the old style is better for ignoring pieces of code.
144			* Pattern guard /p in regexps to match the current tail. This can be used
145			for setting "markers" without capturing anything, e.g.:
146			[ (/(x:=1) ...) \| (/(x:=2) ...) ]
147			Back to the old semantics for default value patterns in regexps
148			(they do capture an element).
149			* New syntax {...; l = p else p'; ... }. p' is applied
150			to the whole matched record when p does not match (or when
151			the field is missing). Equivalent to:
152			{ ...; l = p; ...} \| ({...;...} & p')
153			* Punning in record/attribute expressions and patterns.
154			{ x; y } is a shorthand for {x=x;y=y}.
155			* New syntax for R**n in regular expressions, equivalent
156			to R...R (n times), where n > 0.
157			* Interval arithmetic for the * operator.
158			* Warning for potential division by 0.
159			* New "system", "exit", "getenv" built-in functions.
160	abate	1401
161	abate	1422	- Toplevel, interpreter, compiler:
162			* New #silent, #verbose directives.
163			* New --script option.
164			* Removed the warning "no caml interface".
165
166			- Compilation:
167			* Better compilation of sequence capture variables.
168			Now, [ ... x::Any* ] is as efficient as [ ... ; x ]. Can also be written
169			[ ... /x _* ]. The [ ... ; ... ] syntax is no longer necessary
170			and might be deprecated.
171
172			- Bug fixes, including:
173			* Bug fixes in configure/Makefile for Cygwin.
174			* Bug fix for the compilation of complex patterns with records.
175			* Fixed a little bit support for XML Schema, but still largely broken.
176			* Fix --stdin.
177	abate	1423	* Bug fix in print_xml (do not create a namespace decl for "xml:").
178	abate	1422
179	abate	1425	- Distribution:
180	abate	1422	* apps-cduce-cvs GODI package is updatable.
181	abate	1425	* The release tarball does not contain the CDuce website, only
182			the HTML documentation (memento, tutorial, manual).
183	abate	1422
184	abate	1261	0.2.1
185	abate	1230
186			- string:// scheme for load_xml and others
187	abate	1261	- code updated to OCaml 3.08.1, PXP 1.1.95
188			- NOTE: support for namespaces in XML Schema may be broken
189	abate	1230
190	abate	1176	0.2.0
191	abate	1077
192	abate	1218	- OCaml/CDuce interface.
193
194	abate	1086	- Language:
195	abate	1218	* Support for URLs in load_xml, load_html, load_file, and schemas:
196	abate	975	e.g. you can write `` load_html "http://www.cduce.org/" ''
197	abate	1218	(need either the ocurl package or the netclient package).
198	abate	796	* More advanced (and documented) support for XML Schemas.
199	abate	820	* Preliminary integration of CQL query language that is:
200	abate	1218	select e from p1 in e1, ... ,pn in en where e'.
201			* Allow structured constants in default value patterns (p := c).
202	abate	1086	* Default value patterns in regexps don't consume an element.
203	abate	1218	* Logical operators &&, \|\|, and not.
204			* New syntax for currified functions
205			fun (p1 : t1)...(pn : tn) : t = ...
206	abate	1201
207			- Incompatible changes:
208	abate	1218	* argv is now an operator of type [] -> [ String* ].
209			* The --dump, --load, --save options are deprecated.
210	abate	1205	* Changes to the command line. "--pxp" is replaced with "--no expat".
211	abate	1086
212			- Implementation:
213			* Code upgraded to Ocaml 3.07.
214			* Major cleaning in progress.
215			* Added internal support for abstract data types.
216			* Using ulex instead of wlex.
217			* Sources can now be in utf8.
218	abate	1218	* Separate compilation.
219			* Lazy implementation of @.
220	abate	664
221	abate	1086	- Other:
222			* Added configure script.
223	abate	1218	* Various Makefile improvements.
224	abate	1086
225			- Bug fixes:
226			* Bug fixes in the parser. Tuples are now ok in regexps.
227
228
229	abate	641	0.1.1
230	abate	642	* Various bug fixes (expat might now work)
231	abate	623	* Sequencing operator e1;e2 (equivalent to: let [] = e1 in e2)
232			* Encoded references
233
234
235	abate	563	0.1.0
236	abate	562	* Support for XML Namespaces
237	abate	527	* Better support for expat; clean Makefile
238	abate	489	* Get rid of ;; and let fun in examples
239	abate	562	* Optional ; for record in attribute position (values and types/patterns)
240	abate	489	* Split --dump into --load and --save
241	abate	527	* Better handling of strings (specific node in AST)
242			* Map, transform: tail-recursive implementation
243			* Preliminary support for XML Schema
244			* Various bug fixes
245	abate	489
246	abate	527
247	abate	475	0.0.91
248			* Second alpha release
249			* Bug fixes and syntax changes (e.g. making "fun" optional in "let fun")
250			* Experimenting with expat support (see expat/README)
251
252
253	abate	370	0.0.9
254			* First public release (alpha release)