Chicken Scheme 6.0

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Chicken Scheme 6.0

6.0.0 - Core libraries

6.0.0 - 核心库

  • All modules specified by the R7RS small language are now available in the core system.

  • R7RS 小语言规范中定义的所有模块现已在核心系统中提供。

  • The internal string representation has been converted to UTF-8, making strings fully UNICODE capable.

  • 内部字符串表示已转换为 UTF-8，使字符串完全支持 UNICODE。

  • The (chicken blob) module has been replaced with (chicken bytevector), containing R7RS compatible bytevector operations. Bytevectors are now fully equivalent to SRFI-4 u8vectors.

  • (chicken blob) 模块已被 (chicken bytevector) 取代，其中包含与 R7RS 兼容的字节向量操作。字节向量现在与 SRFI-4 的 u8vectors 完全等价。

  • The read-syntax for blobs (#${...}') has been removed. Bytevectors can be read using #u8(…)’ or `#u8”…”’.

  • 用于 blob 的读取语法 (#${...}') 已被移除。字节向量现在可以使用 #u8(…)’ 或 `#u8”…”’ 进行读取。

  • `char-name’ now allows removing a named character definition.

  • `char-name’ 现在允许移除已命名的字符定义。

  • open-input-file' and open-output-file’ accept a file encoding, supported are currently UTF-8 (the default) and Latin-1 (ISO-8859-1).

  • open-input-file' 和 open-output-file’ 现在接受文件编码参数，目前支持 UTF-8（默认）和 Latin-1 (ISO-8859-1)。

  • file-read', file-write’, ‘set-pseudo-random-seed!’ and `random-bytes’ require a bytevector argument and do not accept strings.

  • file-read', file-write’, ‘set-pseudo-random-seed!’ 和 `random-bytes’ 现在要求使用字节向量作为参数，不再接受字符串。

  • process-fork', process-run’, process' and process*’ return now a process-object instead of a PID, use process record accessors to retrieve exit-status and input/output ports. process-wait' and process-signal’ accept either a PID or a process object as argument.

  • process-fork', process-run’, process' 和 process*’ 现在返回一个进程对象（process-object）而非 PID，请使用进程记录访问器来获取退出状态和输入/输出端口。process-wait' 和 process-signal’ 现在接受 PID 或进程对象作为参数。

  • File-locking operations in the (chicken file posix) module now use the flock(2) system call, operator over whole files, are thread-safe and use a simpler interface. `file-test-lock’ has been removed.

  • (chicken file posix) 模块中的文件锁定操作现在使用 flock(2) 系统调用，作用于整个文件，具备线程安全性，并使用了更简单的接口。`file-test-lock’ 已被移除。

  • read-u8vector', read-u8vector!’ and `write-u8vector’ have been removed, use the equivalent operations from the (chicken io) module instead.

  • read-u8vector', read-u8vector!’ 和 `write-u8vector’ 已被移除，请改用 (chicken io) 模块中的等效操作。

  • Added read-bytevector', read-bytevector!’ and `write-bytevector’ to the (chicken io) module.

  • 在 (chicken io) 模块中添加了 read-bytevector', read-bytevector!’ 和 `write-bytevector’。

  • Removed set-port-name!', use the SRFI-17 setter for port-name’ instead.

  • 移除了 set-port-name!'，请改用 port-name’ 的 SRFI-17 setter。

  • Added `port-encoding’ to the (chicken port) module.

  • 在 (chicken port) 模块中添加了 `port-encoding’。

  • make-input-port' and make-output-port’ take their optional port methods as keyword arguments now.

  • make-input-port' 和 make-output-port’ 的可选端口方法现在通过关键字参数传递。

  • Added make-binary-input-port' and make-binary-output-port’.

  • 添加了 make-binary-input-port' 和 make-binary-output-port’。

  • Locatives on strings are now indexed by code-point, not byte.

  • 字符串上的定位器（Locatives）现在按码点（code-point）索引，而非字节。

  • `symbol-escape’ now also controls whether symbols are printed in escaped (”|…|”) mode or not.

  • `symbol-escape’ 现在也控制符号是否以转义 (”|…|”) 模式打印。

  • Symbol printing is stricter in deciding when symbols should be escaped or not.

  • 符号打印在决定何时需要转义时变得更加严格。

  • The following primitives have been moved from (chicken base) to R7RS modules:

  • 以下原语已从 (chicken base) 迁移至 R7RS 模块：

  • exact-integer?, exact-integer-sqrt?', vector-copy!’, make-parameter', call/cc’, open-input-string', open-output-string’, get-output-string', input-port-open?’, output-port-open?', parameterize’ and `port?’ moved from the (chicken base) to the (scheme base) module.

  • exact-integer?, exact-integer-sqrt?', vector-copy!’, make-parameter', call/cc’, open-input-string', open-output-string’, get-output-string', input-port-open?’, output-port-open?', parameterize’ 和 `port?’ 已从 (chicken base) 迁移至 (scheme base) 模块。

  • `case-lambda’ moved from (chicken base) to (scheme case-lambda).

  • `case-lambda’ 已从 (chicken base) 迁移至 (scheme case-lambda)。

  • `features’ moved from (chicken platform) to (scheme base).

  • `features’ 已从 (chicken platform) 迁移至 (scheme base)。

  • `write-string’ moved from (chicken io) to (scheme base) and its signature changed to the R7RS one.

  • `write-string’ 已从 (chicken io) 迁移至 (scheme base)，其签名已更改为 R7RS 标准。

  • `define-record-type’ moved to (scheme base) and is generative, to be compliant with R7RS.

  • `define-record-type’ 已迁移至 (scheme base) 且变为生成式（generative），以符合 R7RS 标准。

  • `syntax-error’ has been removed from (chicken syntax) and is now a macro and part of (scheme base).

  • `syntax-error’ 已从 (chicken syntax) 移除，现在作为一个宏包含在 (scheme base) 中。

  • record-instance?' and make-record-instance’ accept non-symbolic type specifiers to support generative record types.

  • record-instance?' 和 make-record-instance’ 现在接受非符号类型说明符，以支持生成式记录类型。

  • The new (chicken number-vector) module now provides a superset of SRFI-4, including 64 and 128-bit complex number vectors, the `srfi-4’ module is still available but exports only those procedures as are specified in SRFI-4.

  • 新的 (chicken number-vector) 模块现在提供了 SRFI-4 的超集，包括 64 位和 128 位复数向量；`srfi-4’ 模块仍然可用，但仅导出 SRFI-4 规范中定义的那些过程。

  • The second (optional) parameter for load' and load-relative’ may be either an environment or an evaluation procedure.

  • load' 和 load-relative’ 的第二个（可选）参数现在可以是环境或求值过程。

  • The module aliases srfi-0', srfi-6’, srfi-9', srfi-11’, srfi-23', srfi-39’ and `srfi-98’ have been removed (all of these are covered by R7RS).

  • 模块别名 srfi-0', srfi-6’, srfi-9', srfi-11’, srfi-23', srfi-39’ 和 `srfi-98’ 已被移除（这些功能均已被 R7RS 覆盖）。

  • The modules r4rs', r5rs’, r4rs-null' and r5rs-null’ have been renamed to `(scheme XXX)’.

  • 模块 r4rs', r5rs’, r4rs-null' 和 r5rs-null’ 已重命名为 `(scheme XXX)’。

  • Hexadecimal escape sequences in strings and extended symbols must be terminated by the `;’ character, following R7RS.

  • 字符串和扩展符号中的十六进制转义序列必须以 `;’ 字符结尾，以符合 R7RS。

  • The #ci'/#cs’ read syntaxes have been removed, use `#![no-]fold-case’ markers instead.

  • #ci'/#cs’ 读取语法已被移除，请改用 `#![no-]fold-case’ 标记。

  • include' and include-relative’ accept multiple filenames, `include-ci’ has been added.

  • include' 和 include-relative’ 现在接受多个文件名，并添加了 `include-ci’。

  • Added `include-path’ to (chicken platform) module.

  • 在 (chicken platform) 模块中添加了 `include-path’。

  • Added `number-vector-data’ to (chicken memory representation) module.

  • 在 (chicken memory representation) 模块中添加了 `number-vector-data’。

  • define-library' has been extended to support the export-all’ specification.

  • define-library' 已扩展以支持 export-all’ 规范。

  • The platform-identifier “mingw32” has been renamed to “mingw”.

  • 平台标识符 “mingw32” 已重命名为 “mingw”。

  • Library procedures that return paths now always convert them to contain forward slashes, ‘make-pathname’ always uses ”/” for path separation.

  • 返回路径的库过程现在总是将其转换为包含正斜杠，‘make-pathname’ 总是使用 ”/” 作为路径分隔符。

  • Added `expand1’ to (chicken syntax) module for expanding a macro only once, also added the “,x1” command to “csi” for this.

  • 在 (chicken syntax) 模块中添加了 `expand1’ 以仅展开宏一次，并为此在 “csi” 中添加了 “,x1” 命令。

  • Added the (chicken version) module.

  • 添加了 (chicken version) 模块。

  • delete-file*' and delete-file’ now behave consistently with broken symlinks.

  • delete-file*' 和 delete-file’ 现在对损坏的符号链接的处理行为保持一致。

  • `number->string’ now accepts bases up to 36, where before it only accepted bases up to 16 (thanks to Diego A. Mundo)

  • `number->string’ 现在接受最高 36 进制，此前仅支持最高 16 进制（感谢 Diego A. Mundo）。

  • `string->number’ now handles ambiguous cases involving the character “i” in bases higher than 18 more consistently.

  • `string->number’ 现在能更一致地处理在 18 进制以上时涉及字符 “i” 的歧义情况。

  • `make-rectangular’ returns a complex number if the imaginary part is inexact zero.

  • 如果虚部为非精确零（inexact zero），`make-rectangular’ 现在返回一个复数。

  • `string->number’ and the reader accept and handle correctly complex numbers with a negative inexact zero as the imaginary part.

  • `string->number’ 和读取器现在可以正确接受并处理虚部为负非精确零的复数。

  • `imag-part’ returns exact zero when given a non-complex number.

  • 当传入非复数时，`imag-part’ 返回精确零。

  • max' and min’ ignore nan values when given any non-nan argument.

  • 当给定任何非 NaN 参数时，max' 和 min’ 会忽略 NaN 值。

Syntax expander

语法展开器

  • `syntax-rules’ attempts to better support tail patterns with ellipses (#1736).
  • `syntax-rules’ 尝试更好地支持带有省略号的尾部模式 (#1736)。

FFI changes

FFI 变更

  • Strings and symbols passed to foreign code are not copied, they are passed directly, any mutations done by external code will be visible on the Scheme side.

  • 传递给外部代码（foreign code）的字符串和符号不再被复制，而是直接传递；外部代码所做的任何修改在 Scheme 端都将可见。

  • Complex numbers, C structs and unions can now be passed directly as arguments and returned as results when interfacing to C code.

  • 在与 C 代码交互时，复数、C 结构体和联合体现在可以直接作为参数传递并作为结果返回。

Tools

工具

  • The compiler and interpreter option -r5rs-syntax' has been renamed to -r7rs-syntax’ and does not disable extended symbol syntax (”|…|”) anymore.

  • 编译器和解释器选项 -r5rs-syntax' 已重命名为 -r7rs-syntax’，且不再禁用扩展符号语法 (”|…|”)。

  • The “feathers” debugger has been removed from the core and is now available as an egg.

  • “feathers” 调试器已从核心中移除，现在作为 egg 提供。

  • The set-describer!' procedure has been removed from the csi’ module.

  • set-describer!' 过程已从 csi’ 模块中移除。

  • The “csc” program now accepts tool flags (e.g. -compiler, -cc etc) which have paths with spaces in them without requiring the user to…

  • “csc” 程序现在接受包含空格路径的工具标志（例如 -compiler, -cc 等），无需用户…

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