Mercurial > urweb
view CHANGELOG @ 2191:849404a3af27
Change behavior of SQL equality to do the intuitive thing for nullable types
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Sun, 01 Nov 2015 17:02:16 -0500 |
| parents | 4f4ae5c92434 |
| children | 1d6e7e3405f6 |
line wrap: on
line source
======== 20151018 ======== - Applications now reconnect to database server automatically after losing connection. - Bug fixes and improvements to compatibility, documentation, and error messages ======== 20150819 ======== - Allow mouse and key events for <body> - Add HTML 'align' attribute - Add onChange handler to radioOption - New literal [_LOC_] that is replaced with textual information on location in source file - Add a simple 'make test' target - Bug fixes and documentation improvements ======== 20150520 ======== - Change default behavior of client-side GUI event handlers: By default, events are now passed to handlers on parent DOM nodes as well, just like in normal JavaScript. Call [preventDefault] or [stopPropagation] to tweak that behavior. WARNING: This change may break backward compatibility! - URIs specified with 'file' .urp directive are implicitly allowed to be referenced. - New HTML tags: <fieldset>, <legend> - New urweb-mode Emacs command: 'urweb-close-matching-tag' - Bug fixes ======== 20150412 ======== - Several new infix operators for function composition, etc. - Hexadecimal integer literals - New HTML events: 'oncontextmenu', 'onmouseenter', and 'onmouseleave' - New HTML attributes: 'download' - Bug fixes and optimization improvements ======== 20150214 ======== - Bug fixes and improvements to type inference and optimization ======== 20150103 ======== - New antiquote syntax for 'ORDER BY' clauses - New standard library function: List.mem - Bug fixes and improvements to type inference ======== 20141206 ======== - New HTML5 form widget tags and attributes - New command-line option for HTTP servers: '-T', to set recv() timeout - New C function uw_remoteSock() for use in FFI code - Bug fixes and improvements to type inference and optimization ======== 20140830 ======== - New HTML attribute: 'role' - Bug fixes ======== 20140819 ======== - Improvements to HTML model - Bug fixes and optimization improvements ======== 20140807 ======== - New .urp directive: 'file' - Support for 'aria-*' attributes in HTML - Default value of 'jsFunc' for less-safe FFI - Client-side implementation of Basis function 'strsindex' - Bug fixes and improvements to type inference and documentation ======== 20140704 ======== - New syntactic shorthand for antiquoting subqueries - New Top members: max and min - 'sql_injectable_prim' instance for 'url' - Bug fixes ======== 20140615 ======== - New syntactic sugar: 'let E where DS end' for 'let DS in E end' - Add 'onChange' attributes to more tags. - New standard library function: String.trim - Start treating Ur/Web tag <button> as real HTML tag <button>, with special handling of 'value' attribute as tag content. - Bug fixes ======== 20140531 ======== - Parsing extension: monadic bind supports patterns, like "(x, y) <- a; b" - New, optional less safe FFI - New HTML tags: <tbody>, <tfoot>, <thead> - HTML5 data-* attributes - HTML5 semantic tags - Syntactic sugar extension: allow parens grouping joins in FROM clauses - Bug fixes and documentation improvements ======== 20140426 ======== - New Basis functions having to do with dates and times, wrapped nicely in new Datetime module of standard library - New .urp directives: 'html5', 'neverInline', 'noMangleSql' - New command-line arguments: '-explainEmbed', '-stop' - Changes to C FFI interface, especially for uw_register_transactional() - 'Basis.getEnv' now always calls UNIX getenv() outside a page handler. - Changed <active> to avoid generating an empty <span> for empty content. - New HTML tag: <pre> - Bug fixes and improvements to type inference, optimizations, and documentation ======== 20131231 ======== - Performance optimizations for Ur/Web's standalone HTTP servers - New command-line options for those servers: '-k' and '-q' - New HTML pseudo-tag: <script> - Trying to recv() from a different client's channel now triggers a run-time error. - New compiler command-line argument: -print-cinclude - Bug fixes and improvements to optimizations, error messages, and documentation ======== 20131124 ======== - Extend 'where con' to allow descending into submodule structure - Type inference improvements - Treat transactional FFI functions as effectful by default, so that 'effectful'/'benignEffectful' .urp directives aren't necessary - Interpret 'table' signature items more flexibly, automatically adding (Ur) constraints to support a kind of subtyping over (SQL) constraint sets - New header file scheme to support FFI code in either of C or C++ - New command-line arguments: -ccompiler, -print-ccompiler - More HTML tags: <dd>, <dl>, <dt>, <em>, and <strong> - Add 'rel' attribute to <a> - New type synonym 'xhead' - Refactored the development Mercurial repository to remove autogenerated files - More integration with Autotools distribution functionality - Improvements to documentation and compiler error messages - Bug fixes and optimization improvements ======== 20130421 ======== - Allow any FFI module to declare new HTML tags - Ignore polymorphism in JavaScript calls to custom FFI functions, allowing a kind of simple dynamic typing (unsafe, of course) - Add some name-mangling rules to allow XML attribute 'name' and attributes with dashes - New Basis members: pow and tryRpc - Add 'placeholder' attribute for <password> - New standard library functions: Option.unsafeGet - Add ./configure MLTONARGS option for MLTON arguments - Bug fixes and documentation improvements ======== 20120925 ======== - Changes to optimization/compilation strategy that can speed up compilation and reduce code size dramatically - New .urp directives: 'coreInline' and 'monoInline' - 'show' instance for 'sql_query' - Improvements to compiler error messages - Bug fixes and optimization improvements ======== 20120807 ======== - Client-side mouse and keyboard event handlers are now functions over records. - More flexibility in local type class instances - Remove 'class' declaration; use 'con' instead now. - SQL window functions - New HTML pseudo-tag: <active> - New Basis members: getenv (and associated functions), giveFocus - New Top member: postFields (to process POST form data when called by some external script) - HTTP daemons take '-a' option to set IP address to listen on - More global mouse event hooks - Bug fixes and performance improvements ======== 20120519 ======== - Compatibility fixes for new Automake and GCC versions - Allow synchronous RPC's in 'onunload' code - Start of special cases for parsing CSS class names: interpret "table" as identifier 'tabl' (since 'table' is an Ur/Web keyword) - Bug fixes and improvements to type inference and optimization ======== 20120512 ======== - New support for CSS style code embedded in Ur/Web programs. Two recommended usage methods: 1. Use 'style' attributes with normal CSS syntax inside string literals. 2. Generate styles programmatically with the Style module of the Gui library (distributed separately). - 'dynStyle' attribute, which is to 'style' as 'dynClass' is to 'class' - Parsing of standard syntax for 'class' attributes, via specially interpreted string literals - New optional suffix for 'rewrite' in .urp files: [-] - Compiler error message improvements, including simplification of types - New command line parameters: '-boot', '-dumpTypesOnError', '-unifyMore' - New .urp directives: 'linker' - Support for speeding up compilation by caching type inference results: Run 'urweb daemon start' to spawn a background process, 'urweb daemon stop' to kill it. - Enforcement of uniqueness of top-level module names across a project - Adjust error message format to match Emacs compilation mode defaults - More HTML attributes added - New antiquote syntax for 'PRIMARY KEY' - Bug fixes and improvements to type inference and platform compatibility ======== 20120329 ======== - New JavaScript FFI function: setInnerHTML - Bug fixes - Documentation improvements ======== 20120310 ======== - 'ORDER BY RANDOM' - New Basis members: diffInMilliseconds, toMilliseconds - <radio> widget now returns 'option string' instead of 'string' - '-dumpSource' command-line flag - Bug fixes and optimization improvements ======== 20120110 ======== - Improvements to type inference and error messages - New 'dynClass' pseudo-attribute for most HTML tags - New 't.*' notation for selecting all columns of a table - New SQL functions: 'lower' and 'upper' - 'timeFormat' .urp directive - Client-side 'debug' and 'naughtyDebug' calls use a browser debug console, if available - Allow 'source' values to be returned by RPCs - Change the HTML context classification scheme in 'Basis' - Rename 'Top.id' to 'ident' to avoid clash with 'Basis.id' - More client-side function implementations - Some expanded reference manual sections - Tweak to linker command line argument order (to prevent issues with new Ubuntu versions) - Bug fixes ======== 20111127 ======== - Improvements to type inference and error messages - New Basis members: ceil, float, null, round, trunc - New SQL expression forms: 'IF..THEN..ELSE', 'COALESCE', and 'LIKE' - Support for the full set of HTML character entities - Client-side versions of some time-related functions - New URWEB_PG_CON environment variable - Allow arguments for 'con' signature items, not just declarations - Bug fixes and performance improvements - Tweaks for idiosyncrasies of OS X (like deprecated OpenSSL) ======== 20110917 ======== - Start of official tutorial - Compiler support for generating nice tutorial HTML from literate source files - New protocol 'static' for generating static pages - Replace GCCARGS 'configure' variable with CCARGS - Better support for compilation with Clang (including on OS X) - Fancier 'configure' script with versioning - Applications consult URWEB_STACK_SIZE environment variable to determine thread stack size - HTML tag IDs now drawn from an abstract type - New Basis functions: diffInSeconds, mkMonad, onClick, onDblclick, onKeydown, onKeypress, onKeyup, onMousedown, onMouseup, preventDefault, stopPropagation, toSeconds - Add <image> tag - Add 'target' attribute for <a> - New compiler command-line option: -dumpTypes - New syntactic sugar for computed ORDER BY clauses - Bug fixes and optimization improvements ======== 20110715 ======== - Treat local variables the same as module-level variables, for the purpose of implicit argument insertion - New 'noXsrfProtection' directive for .urp files - Non-debug builds omit source location information in error messages shown to the user (but keep that information in log entries) - Basis.getHeader and Basis.setHeader - Basis.show_css_class - Basis.currentUrlHasQueryString - Make Basis.rand cryptographically secure - Client-side versions of Basis.now and Basis.show_time - Bug fixes - Improvements to auto-configuration and build process (now builds with LLVM's Clang!) - Clarifications in the manual ======== 20110517 ======== - Cygwin compatibility - Compatibility with Gentoo packaging process, including a .ebuild file - Change typing of SQL subqueries, to indicate that they may always return NULL (for no rows) - Syntactic sugar for GROUP BY with variable numbers of columns (using 'tab.{{c}}', where 'c :: {Type}') - 'ALL' for SQL relational operators - Add nullable types to the class for valid operands for SQL arithmetic - 'alt' attribute for <img> - <sup> and <sub> HTML tags - Allow 'debug' and 'naughtyDebug' in client-side code, implemented with 'alert' - Bug fixes and optimization improvements ======== 20110123 ======== - Changes to encoding of SQL aggregate functions: nullable types may be aggregated, and non-COUNT aggregates return nullable results. - SQL subqueries may apply aggregate functions to columns bound in enclosing queries. - Switch from libmhash to OpenSSL. - 'cdataChar', for injecting arbitrary character codes into XML - 'crypt', for access to the standard UNIX password encryption routine - 'readUtc', for parsing time strings in the UTC time zone - Built-in 'time' type now stores microseconds (which for now are only used in connection with Postgres timestamps). - Client-side URL blessing and redirection - 'currentUrlHasPost' function - Transactional 'free' functions now passed an argument indicating whether the runtime system expects to retry the transaction. - Change tasks to allow task kind-specific inputs - Add 'clientLeaves' and 'periodic' task kinds - Support for externally-callable pages, via the 'postBody' and 'queryString' types and the 'effectfulUrl' function - 'minHeap' and 'alwaysInline' .urp options - '-prefix' command-line option - Comments in .urp files (lines starting with '#') - Miscellaneous additions to the standard library - Bug fixes and improvements to type inference and optimization ======== 20101102 ======== - Polymorphic variants (see Basis.variant) - New 'onError' directive for .urp files - (* *) and <!-- --> comments in XML - Basis.classes, Basis.confirm, and Basis.tryDml - New notations ::_ and :::_, for constructor parameters of unknown kind - Invocations like 'urweb foo' will compile foo.ur as a single-file project, even if no foo.urp exists - '-limit' command-line flag and 'limit' .urp directive - Bug fixes and optimization improvements ======== 20100603 ======== - Changed URL escaping convention, to avoid confusing proxies. The new convention is like the normal one, but with '.' instead of '%'. - Changed JavaScript compilation of recursive functions to use thunks. This change avoids most costs of functions not referenced on particular pages, reducing loading time dramatically. - Support HTTP caching of application-specific JavaScript code - Bug fixes ======== 20100506 ======== - New experimental checker for information flow and access control policies (See demo at http://www.impredicative.com/ur/scdv/) ======== 20100401 ======== - Subquery expressions and FROM items - Low-level support for SELECT with no FROM clause - Fixes for DBMS-portability of relational operators ======== 20100325 ======== - -verbose flag - COUNT(col) SQL aggregate function - 'benignEffectful' and 'safeGet' .urp commands - Remove Basis.getRequestHeader, since it can be used to circumvent cookie security - Rename Top.foldR*X to map*X - Bug fixes and optimization improvements ======== 20100213 ======== - Improvements to 'configure'; should now fail if any uncommon but required package is missing - Other fixes to configuration, build system, and C code portability - sigfile .urp directive & -sigfile command-line option - .urp files with no directives no longer need to begin with blank lines. - Other bug fixes ======== 20100130 ======== - Conversion to an Automake-based build system, for greater portability in building shared libraries - -path and -root command-line flags - Exported page handling functions (i.e., those page-generating functions appearing in the main module's signature) may now take any number of arguments, including 0. ======== 20100112 ======== - Basis.serialized type family, for storing more types in the database - Basis.textBlob, for building blobs from strings - Basis.debug function, for server-side debug printing - Bug fixes & optimization improvements ======== 20091230 ======== - Automatic insertion of implicit arguments in more positions - Reifying expressions as URLs and redirecting to them explicitly - More syntactic sugar for SQL - Typing of SQL queries no longer exposes which tables were used in joins but had none of their fields projected - Tasks - Dynamic linking of the runtime system - Optimization improvements - Bug fixes ======== 20091203 ======== - Extended cookie interface (breaks backward compatibility for 'setCookie') - Bug fixes - Extended UTF-8 characters in HTML ======== 20091124 ======== - Improved Internet Explorer compatibility ======== 20091108 ======== - Bug fixes - Optimization improvements - Removed a restriction that prevented some RPCs and calls to sleep or recv from compiling ======== 20091012 ======== - Small bug fixes affecting MySQL and SQLite ======== 20091009 ======== - Bug fixes - Improvement to choice of line number to cite in record unification error messages - SELECT DISTINCT - New extra demos: orm1 and versioned1 ======== 20090926 ======== - Reimplemented client-side code generation to use an interpreter, rather than compilation to JavaScript; this avoids common browser flaws: lack of optimization of tail calls and occasional bugs in closure handling. - Bug fixes ======== 20090919 ======== - Bug fixes - Optimization improvements - Expanded grid demo in demo/more: optional columns, sorting, filtering, paging, selecting rows, aggregate row ======== 20090912 ======== - Bug fixes - Optimization improvements - New set of extra demos in demo/more ======== 20090825 ======== - Many bug fixes - Remote procedure calls must be marked with the new 'rpc' function. - Some tweaks to enable usage on OSX (suggested by Paul Snively) ======== 20090718 ======== - New application protocols: CGI and FastCGI - New database backends: MySQL and SQLite - More JavaScript events added to tags in standard library - New manual section on using the foreign function interface (FFI) ======== 20090623 ======== - Many bug fixes - Mutually-recursive datatypes - SML-style pattern-matching syntax for "fun", "fn", and local "val" - Backwards-incompatible change to syntax of formal constructor parameters to value-level functions, to support the previous change - Path map support inspired by SML/NJ CM and MLton ML Basis - Start of some new standard library modules - Some improvements to JavaScript runtime, including better error handling ======== 20090505 ======== - Reimplement constructor class resolution to be more general and Prolog-like - SQL table constraints - URLs - Client-side error handling callbacks - CSS - Signing cookie values cryptographically to thwart cross site request forgery - Blobs and HTTP file upload - SQL outer joins - SQL views - Subforms - C and JavaScript FFI - Path rewriting ======== 20090405 ======== - Asynchronous message-passing and the associated server-side client bookkeeping - Reimplement parts of the client-side runtime system to avoid space leaks - spawn and sleep - Expand the constructor class instance rule format ======== 20090312 ======== - Replace type-level "fold" with "map" - Replace expression-level "fold" with folders, defined in Top and supported by some special compiler inference - Replace guarded constructors with guarded types, introduced only by guarded expression abstraction, and with a new explicit application form - Kind polymorphism - Generalize type classes to constructor classes - Initial compilation of client-side code to JavaScript - Initial support for mixed client- and server-side programming (i.e., "AJAX") - src/coq: Coq formalization of a core Ur-like calculus ======== 20081209 ======== - Optimization: Fusing page writes with calls to recursive functions - Optimization of bottleneck compiler phases - Reference manual - SQL arithmetic operators ======== 20081120 ======== - Fix bug that sometimes led to omission of initial "<html>" in pages - Take advantage of nested functions in some demos - "profile" option that may appear in .urp files, to enable gprof profiling - "-guided-demo" option that works like "-demo" but uses less screen space for prose ======== 20081118 ======== - Nested function definitions - Primitive "time" type - Nullable SQL columns (via "option") - Cookies - Compiler: Specialization of functions to known arguments (especially of function type) ======== 20081028 ======== - Add GCCARGS configure option ======== 20081027 ======== - On missing inputs, print an error message, but don't exit the web server. - Remove need for "() <-" notation. ======== 20081026 ======== - Change 'sed' call to work on OSX. - Avoid including or linking libpq files on apps that don't use SQL.