pax_global_header00006660000000000000000000000064147705157510014526gustar00rootroot0000000000000052 comment=9c79ec87bfc2e1b88066b04a70be4919bb8bf999 zuo-1.12/000077500000000000000000000000001477051575100122665ustar00rootroot00000000000000zuo-1.12/.github/000077500000000000000000000000001477051575100136265ustar00rootroot00000000000000zuo-1.12/.github/scripts/000077500000000000000000000000001477051575100153155ustar00rootroot00000000000000zuo-1.12/.github/scripts/msvcprep.bat000066400000000000000000000047271477051575100176560ustar00rootroot00000000000000 REM Find Visual Studio [Express] in one of the usual places. REM Expects something like "x86", "amd64", or "x86_amd64" as an argument. set VCMODE=%1 REM For 2022 and later, look in "Program Files" set Applications=%ProgramFiles% set VCVARBAT=%Applications%\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2022\Professional\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\Build\vcvarsall.bat REM For 2019 and earlier, look in "Program Files (x86)" set Applications=%ProgramFiles(x86)% if "%Applications%" == "" set Applications=%ProgramFiles% if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2017\Enterprise\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2017\Professional\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio\2017\BuildTools\VC\Auxiliary\Build\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio 14.0\vc\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio 13.0\vc\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio 12.0\vc\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio 11.0\vc\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio 10.0\vc\vcvarsall.bat if not exist "%VCVARBAT%" set VCVARBAT=%Applications%\Microsoft Visual Studio 9.0\vc\vcvarsall.bat "%VCVARBAT%" %VCMODE% zuo-1.12/.github/workflows/000077500000000000000000000000001477051575100156635ustar00rootroot00000000000000zuo-1.12/.github/workflows/zuo-cflags.yml000066400000000000000000000021261477051575100204610ustar00rootroot00000000000000--- name: Zuo with Strict Compiler Flags # yamllint disable-line rule:truthy on: [push, pull_request] jobs: build-gcc: runs-on: ubuntu-22.04 env: CFLAGS: "-Werror -Wall -Wextra -Wstrict-prototypes -Wold-style-definition -Wshadow -Wpointer-arith -Wcast-qual -pedantic -O2 -std=c11 -D_POSIX_C_SOURCE=200809L" steps: - uses: actions/checkout@v4 with: fetch-depth: 100 - name: Compile run: | gcc -c $CFLAGS -DZUO_EMBEDDED zuo.c -o zuo_embed.o gcc $CFLAGS zuo.c -o zuo - name: Check run: ./zuo build.zuo check build-msvc: runs-on: windows-2022 env: CFLAGS: "/W1 /WX" steps: - uses: actions/checkout@v4 with: fetch-depth: 100 - name: Compile shell: cmd run: | call .github\scripts\msvcprep.bat x86_amd64 cl /c %CFLAGS% /DZUO_EMBEDDED /Fo:zuo_embed.obj zuo.c cl %CFLAGS% zuo.c -o zuo - name: Check shell: cmd run: | call .github\scripts\msvcprep.bat x86_amd64 zuo build.zuo check zuo-1.12/.gitignore000066400000000000000000000003631477051575100142600ustar00rootroot00000000000000/zuo /zuo.dSYM /zuo.exe /zuo.obj /zuo.o /build compiled/ # common backups, autosaves, lock files, OS meta-files *~ \#* .#* .DS_Store *.bak TAGS *.swn *.swo *.swp .gdb_history /.vscode/ # generated by patch *.orig *.rej # coredumps *.core zuo-1.12/LICENSE.txt000066400000000000000000000013271477051575100141140ustar00rootroot00000000000000Copyright 2022-2023 Zuo Developers Copyrights in the Zuo implementation are retained by their contributors. No copyright assignment is required to contribute to Zuo. This component of Racket is distributed under the under the Apache 2.0 and MIT licenses. The user can choose the license under which they will be using the software. There may be other licenses within the distribution with which the user must also comply. See the files https://github.com/racket/racket/blob/master/racket/src/LICENSE-APACHE.txt and https://github.com/racket/racket/blob/master/racket/src/LICENSE-MIT.txt for the full text of the licenses. The SHA-256 implementation is from mbed TLS. mbed TLS is licensed under the Apache v2.0 License. zuo-1.12/Makefile.in000066400000000000000000000016361477051575100143410ustar00rootroot00000000000000# @PACKAGE_NAME@ @configure_input@ @SET_MAKE@ srcdir = @srcdir@ prefix = @prefix@ exec_prefix = @exec_prefix@ datarootdir = @datarootdir@ datadir = @datadir@ bindir = @bindir@ pkgdatadir = @datadir@/@PACKAGE_TARNAME@ CC = @CC@ CFLAGS = @CFLAGS@ CPPFLAGS = @CPPFLAGS@ LDFLAGS = @LDFLAGS@ LIBS = @LIBS@ CC_FOR_BUILD = @CC_FOR_BUILD@ CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@ CPPFLAGS_FOR_BUILD = @CPPFLAGS_FOR_BUILD@ LDFLAGS_FOR_BUILD = @LDFLAGS_FOR_BUILD@ LIBS_FOR_BUILD = @LIBS_FOR_BUILD@ EMBED_LIBS = @EMBED_LIBS@ .PHONY: zuos-to-run-and-install zuos-to-run-and-install: zuo ./zuo . zuos-to-run-and-install zuo: $(srcdir)/zuo.c $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) -DZUO_LIB_PATH='"'"$(srcdir)/lib"'"' -o zuo $(srcdir)/zuo.c $(LDFLAGS_FOR_BUILD) $(LIBS_FOR_BUILD) .PHONY: check check: zuo ./zuo . to-run/zuo to-run/zuo . check .PHONY: install install: zuo ./zuo . install DESTDIR="$(DESTDIR)" zuo-1.12/README.md000066400000000000000000000115321477051575100135470ustar00rootroot00000000000000This is a mirror of the Zuo sources in the `racket/src/zuo` directory of [the Racket repository](https://github.com/racket/racket). Zuo: A Tiny Racket for Scripting ================================ You should use Racket to write scripts. But what if you need something much smaller than Racket for some reason — or what if you're trying to script a build of Racket itself? Zuo is a tiny Racket with primitives for dealing with files and running processes, and it comes with a `make`-like embedded DSL. Zuo is a Racket variant in the sense that program files start with `#lang`, and the module path after `#lang` determines the parsing and expansion of the file content. That's how the `make`-like DSL is defined, and even the base Zuo language is defined by layers of `#lang`s. One of the early layers implements macros. Some Example Scripts -------------------- See [`local/hello.zuo`](local/hello.zuo), [`local/tree.zuo`](local/tree.zuo), [`local/image.zuo`](local/image.zuo), and [`build.zuo`](build.zuo). Building and Running Zuo ------------------------ Compile `zuo.c` with a C compiler. No additional files are needed, other than system and C library headers. No compiler flags should be needed, although flags like `-o zuo` or `-O2` are a good idea. You can also use `configure`, `make`, and `make install`, where `make` targets mostly invoke a Zuo script after compiling `zuo.c`. If you don't use `configure` but compile to `zuo` in the current directory, then `./zuo build.zuo` and `./zuo build.zuo install` (omit the `./` on Windows) will do the same thing as `make` and `make install` with a default configuration. The Zuo executable runs only modules. If you run Zuo with no command-line arguments, then it loads `main.zuo`. Use the `-c` flag to provide module text as an argument. Otherwise, the first argument to Zuo is a file to run or a directory containing a `main.zuo` to run, and additional arguments are delivered to that Zuo program via the `runtime-env` procedure. Running the command `./zuo build install`, for example, runs the `build/main.zuo` program with the argument `install`. Whatever initial script is run, if it has a `main` submodule, that submodule is also run. Library Modules and Startup Performance --------------------------------------- Except for the built-in `zuo/kernel` language module, Zuo finds languages and modules through a collection of libraries. By default, Zuo looks for a directory `lib` relative to the executable as the root of the library-collection tree. You can supply an alternate collection path with the `-X` command-line flag. You can also create an instance of Zuo with a set of libraries embedded as a heap image. Embedding a heap image has two advantages: * No extra directory of library modules is necessary. * Zuo can start especially quickly, competitive with the fastest command-line programs. The `local/image.zuo` script generates a `.c` file that is a copy of `zuo.c` plus embedded modules. By default, the `zuo` module and its dependencies are included, but you can specify others with `++lib`. In addition, the default collection-root path is disabled in the generated copy, unless you supply `--keep-collects` to `local/image.zuo`. When you use `configure` and `make` or `./zuo build.zuo`, the default build target creates a `to-run/zuo` that embeds the `zuo` library, as well as a `to-install/zuo` that has the right internal path to find other libraries after `make install` or `./zuo build.zuo install`. You can use heap images without embedding. The `dump-heap-and-exit` Zuo kernel primitive creates a heap image, and a `-B` or `--boot` command-line flag for Zuo uses the given boot image on startup. You can also embed an image created with `dump-image-and-exit` by using `local/image.zuo` with the `--image` flag. A boot image is machine-independent, whether in a stand-alone file or embedded in `.c` source. Cross Compiling --------------- If you use `./configure --host=...` to cross compile, then you will also need to add something like `CC_FOR_BUILD=cc` as a `./configure` argument to specify the compiler for a `zuo` to use on the build machine. If necessary, you can also specify `CFLAGS_FOR_BUILD`, `LDFLAGS_FOR_BUILD`, and/or `LIBS_FOR_BUILD`. Embedding Zuo in Another Application ------------------------------------ Zuo can be embedded in a larger application, with or without an embedded boot image. To support embedding, compile `zuo.c` or the output of `local/image.zuo` with the `ZUO_EMBEDDED` preprocessor macro defined (to anything); the `zuo.h` header will be used in that case, and `zuo.h` should also be used by the embedding application. Documentation for the embedding API is provided as comments within `zuo.h`. More Information ---------------- Install the `zuo-doc` directory as a package in Racket to render the documentation there, or see [docs.racket-lang.org](https://docs.racket-lang.org/zuo/index.html). zuo-1.12/build.zuo000066400000000000000000000140011477051575100141200ustar00rootroot00000000000000#lang zuo (require "local/image.zuo") ;; Exports `targets` and also defines a `main` submodule ;; that handles command-line arguments and builds a target ;; in a `make`-like way (provide-targets targets-at) ;; The `targets-at` function generates targets, and `to-dir` determines ;; the build directory --- so these targets could be used by another ;; build script that wants the output in a subdirectory, for example (define (targets-at at-dir [vars (hash)]) ;; The `configure` script writes configuration info to "Makefile", so ;; use that if it's available, or use defaults otherwise (define Makefile (at-dir "Makefile")) (define config-in (cond [(file-exists? Makefile) (config-file->hash Makefile)] ;; no `configure`-generated `Makefile`, so use defaults [(eq? (system-type) 'unix) (hash 'prefix "/usr/local" 'CC "cc" 'CFLAGS "-O2")] [else (hash 'prefix "C:\\Program Files\\Zuo" 'CC "cl.exe" 'CFLAGS "/O2")])) (define config (foldl (lambda (key config) (hash-set config key (hash-ref vars key))) config-in (hash-keys vars))) (define install-prefix (hash-ref config 'prefix)) (define pkgdatadir (shell-subst (hash-ref config 'pkgdatadir (build-path install-prefix "lib" "zuo")) config)) ;; Get a target for "image_zuo.c" from `image.zuo` (define image_zuo.c (image-target (hash 'output (at-dir "image_zuo.c") 'libs (map string->symbol (string-split (hash-ref config 'EMBED_LIBS "zuo"))) 'keep-collects? #t))) ;; We'll build two executables; they are the same except for the ;; embedded libary path, so we have a target maker parameterized ;; over that choice (define (exe-target name lib-path) (target (at-dir (add-exe name)) (lambda (path token) (rule (list image_zuo.c (input-data-target 'config (cons lib-path (map (lambda (key) (hash-ref config key #f)) '(CC CPPFLAGS CFLAGS LDFLAGS LIBS)))) (quote-module-path)) (lambda () (define l (split-path path)) (when (car l) (mkdir-p (car l))) (c-compile path (list (target-path image_zuo.c)) (config-merge config 'CPPFLAGS (string->shell (~a "-DZUO_LIB_PATH=" lib-path))))))))) (define (add-exe name) (if (eq? (hash-ref (runtime-env) 'system-type) 'windows) (~a name ".exe") name)) ;; The library path gets used as a C string constant, which isn't ;; trivial because there are likely to be backslashes on Windows (define (as-c-string path) (~s path)) ; probably a good enough approximation ;; The two executable targets (define zuo-to-run (exe-target "to-run/zuo" (as-c-string (find-relative-path "to-run" (at-source "lib"))))) (define zuo-to-install (exe-target "to-install/zuo" (as-c-string (build-path pkgdatadir "..")))) ;; A phony target to build both executables, which we'll list first ;; so it's used as the default target (define zuos-to-run-and-install (target 'zuos-to-run-and-install (lambda (token) (phony-rule (list zuo-to-run zuo-to-install) void)))) ;; A phony target to run the test suite (define check (target 'check (lambda (token) (phony-rule (list zuo-to-run) (lambda () (unless (= 0 (process-status (thread-process-wait (hash-ref (process (.exe "to-run/zuo") (at-source "tests/main.zuo")) 'process)))) (error "check failed"))))))) ;; A phony target to install (define install (target 'install (lambda (token) (phony-rule (list zuo-to-install) (lambda () (define (at-destdir p) (define destdir (hash-ref config 'DESTDIR "")) (if (equal? destdir "") p (apply build-path (cons destdir (cdr (explode-path (path->complete-path p))))))) (define (say-copy cp a b) (displayln (~a "copying " a " to " b)) (cp a b)) (define bindir (at-destdir (shell-subst (hash-ref config 'bindir (build-path install-prefix "bin")) config))) (mkdir-p (at-destdir install-prefix)) (mkdir-p bindir) (define dest-exe (build-path bindir "zuo")) (when (file-exists? dest-exe) (rm dest-exe)) ; needed for macOS (say-copy cp (target-name zuo-to-install) dest-exe) (mkdir-p (at-destdir pkgdatadir)) (say-copy cp* (at-source "lib" "zuo") (at-destdir (build-path pkgdatadir)))))))) ;; Return all the targets (list zuos-to-run-and-install image_zuo.c zuo-to-run zuo-to-install check install)) zuo-1.12/configure000077500000000000000000003305671477051575100142130ustar00rootroot00000000000000#! /bin/sh # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.69 for Zuo 1.0. # # Report bugs to . # # # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. # # # This configure script is free software; the Free Software Foundation # gives unlimited permission to copy, distribute and modify it. ## -------------------- ## ## M4sh Initialization. ## ## -------------------- ## # Be more Bourne compatible DUALCASE=1; export DUALCASE # for MKS sh if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : emulate sh NULLCMD=: # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which # is contrary to our usage. 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AC_INIT([Zuo], [1.0], [https://github.com/racket/racket/issues], [], [https://github.com/racket/zuo]) AC_CONFIG_SRCDIR(zuo.c) AC_ARG_ENABLE(embed, [AS_HELP_STRING([--enable-embed=], [embed ; defaults to "zuo"])], [] [: m4_divert_text([DEFAULTS], [enable_embed="zuo"])]) AC_ARG_ENABLE(big,[AS_HELP_STRING([--enable-big], [embed "zuo/hygienic" as well as "zuo"])]) EMBED_LIBS="zuo" AS_IF([test "x$enable_embed" = xno], [EMBED_LIBS=""], [test "x$enable_big" = xyes], [EMBED_LIBS="zuo zuo/hygienic"], [test "x$enable_embed" != xyes], [EMBED_LIBS="${enable_embed}"]) AC_PROG_MAKE_SET() AC_PROG_CC if test "${CC_FOR_BUILD}" = ""; then CC_FOR_BUILD='$(CC) -O2' CPPFLAGS_FOR_BUILD='$(CPPFLAGS)' CFLAGS_FOR_BUILD='$(CFLAGS)' LDFLAGS_FOR_BUILD='$(LDFLAGS)' LIBS_FOR_BUILD='$(LIBS)' fi AC_ARG_VAR(CC_FOR_BUILD,[build system C compiler command]) AC_ARG_VAR(CFLAGS_FOR_BUILD,[build system C compiler flags]) AC_ARG_VAR(LDFLAGS_FOR_BUILD,[build system linker flags]) AC_ARG_VAR(LIBS_FOR_BUILD,[build system libraries for linker]) AC_ARG_VAR(CPPFLAGS_FOR_BUILD,[build system preprocessor flags]) AC_SUBST(EMBED_LIBS) AC_MSG_NOTICE([zuo libraries to embed: "${EMBED_LIBS}"]) AC_CONFIG_FILES([Makefile main.zuo]) AC_OUTPUT() zuo-1.12/lib/000077500000000000000000000000001477051575100130345ustar00rootroot00000000000000zuo-1.12/lib/zuo/000077500000000000000000000000001477051575100136515ustar00rootroot00000000000000zuo-1.12/lib/zuo/base.zuo000066400000000000000000000002011477051575100153130ustar00rootroot00000000000000#lang zuo/kernel (let ([maker (hash-ref (module->hash 'zuo/private/base) 'make-language #f)]) (maker 'zuo/private/base/main)) zuo-1.12/lib/zuo/bounce.zuo000066400000000000000000000000201477051575100156530ustar00rootroot00000000000000#lang zuo/base zuo-1.12/lib/zuo/build.zuo000066400000000000000000001370361477051575100155210ustar00rootroot00000000000000#lang zuo/base (require "cmdline.zuo" "thread.zuo" "config.zuo" "jobserver.zuo" "dry-run.zuo" "private/build-db.zuo") (provide (rename-out [make-target target] [make-rule rule] [make-phony-rule phony-rule]) input-file-target input-data-target target-name target-path target-shell target? token? rule? phony-rule? sha256? file-sha256 no-sha256 sha256-length build build/command-line build/command-line* build/dep build/no-dep find-target make-at-dir provide-targets bounce-to-targets command-target? command-target->target make-targets) ;; ------------------------------------------------------------ ;; Targets and rules ;; A token represents a build in progress, used by a target's `get-rule` or `build` ;; function to make recursive call or get SHA-256s (possibly cached) (struct token (target ; the target that received this token ch ; a channel to access the build state seen ; to detect dependency cycles resourcer ; build state's resource manager uni?)) ; build state's `uni?` flag (struct target (key ; shortcut: `string->symbol` of the path name ; a symbol or path relative to the current directory get-rule ; (name token -> rule), where `name` is relative to current directory kind ; 'normal, 'input, or 'phony options)) ; keys include 'precious?, 'command?, and 'co-outputs ;; A rule is a result from `get-rule`: (struct rule (deps ; list of targets build ; (-> any), called when deps SHA-256s different than recorded sha256)) ; #f => computed via `file-sha256` ;; A phony target returns a phony-rule, instead: (struct phony-rule (deps build)) ;; During a target's `get-rule` or `build`, calls to `build/dep` ;; trigger recording of additional dependencies (define no-sha256 "") (define phony-sha256 (string->uninterned-symbol "x")) ; internal use (define (sha256? s) (or (and (string? s) (or (= (string-length s) sha256-length) (string=? s no-sha256) ;; also allow a concatenation of SHA-256s for multi-file targets (and (>= (string-length s) sha256-length) (= 0 (remainder (string-length s) sha256-length))))) (eq? s phony-sha256))) ;; public constructor (define make-target (let ([target (lambda (name get-rule [options (hash)]) (unless (or (symbol? name) (path-string? name)) (arg-error 'target "path string or symbol" name)) (unless (procedure? get-rule) (arg-error 'target "procedure" get-rule)) (unless (hash? options) (arg-error 'target "hash table" options)) (cond [(symbol? name) (let ([key (string->uninterned-symbol (symbol->string name))] [get-rule (get-phony-rule->get-rule get-rule)]) (target key name get-rule 'phony options))] [else (let ([key (string->symbol name)]) (target key name get-rule 'normal options))]))]) target)) ;; public constructor (define make-rule (let ([rule (lambda (deps [build #f] [sha256 #f]) (let ([norm-deps (and (list? deps) (map coerce-to-target deps))]) (unless (and norm-deps (andmap target? norm-deps)) (arg-error 'rule "list of targets" deps)) (unless (or (not build) (procedure? build)) (arg-error 'rule "procedure or #f" build)) (unless (or (not sha256) (sha256? sha256)) (arg-error 'rule "sha256 or #f" sha256)) (rule norm-deps build sha256)))]) rule)) ;; An input-file target has no dependencies (define (input-file-target path) (unless (path-string? path) (arg-error 'input-file-target "path string" path)) (target (string->symbol path) path (lambda (path token) (rule '() (lambda () (error "missing input file" path)) #f)) 'input (hash))) (define (coerce-to-target t) (if (path-string? t) (input-file-target t) t)) (define (coerce-to-target* t) (if (list? t) (let ([l (map coerce-to-target t)]) (if (andmap target? l) (make-target (string->uninterned-symbol "multi") (lambda (token) (phony-rule l void))) t)) (coerce-to-target t))) ;; An input-data target supplies its SHA-256 up front (define (input-data-target name v) (unless (symbol? name) (arg-error 'input-data-target "symbol" name)) (target (symbol->key name) name (lambda (path token) (make-rule '() #f (string-sha256 (~s v)))) 'input (hash))) (define make-phony-rule (let ([phony-rule (lambda (deps build) (let ([deps (map coerce-to-target deps)]) (unless (and (list? deps) (andmap target? deps)) (arg-error 'phony-rule "list of targets" deps)) (unless (procedure? build) (arg-error 'phony-rule "procedure" build))) (phony-rule deps build))]) phony-rule)) (define (get-phony-rule->get-rule get-phony-rule) (lambda (path token . args) ; extra args possible with 'command option (define r (apply get-phony-rule (cons token args))) (unless (phony-rule? r) (error "build: target result is not a phony rule" r)) (rule (phony-rule-deps r) (lambda () ((phony-rule-build r)) phony-sha256) phony-sha256))) (define (target-path t) (unless (target? t) (arg-error 'target-path "target" t)) (let ([n (target-name t)]) (if (symbol? n) (error "target-path: target does not have a path name" t) n))) (define (target-shell t) (unless (target? t) (arg-error 'target-path "target" t)) (let ([n (target-name t)]) (if (symbol? n) (error "target-shell: target does not have a path name" t) (string->shell n)))) (define (target-db-dir t) (hash-ref (target-options t) 'db-dir #f)) ;; ------------------------------------------------------------ ;; Build state and loop ;; When a target is built, the build result is recorded as ;; ;; (list sha256 (list dep-sym-or-path-rel-to-target sha256) ...) ;; ;; This result is in the `target-state` field of a build state, while ;; `db` holds the same-shaped information from the previous build. ;; ;; The `time-cache` field of a build state is a shortcut for getting ;; input-file SHA-256s on the assumption that a SHA-256 recorded last time ;; is still right if the file's timestamp hasn't changed. ;; Where the contracts below say "dep-sha256s", that's a hash table ;; mapping a dependency's key to a SHA-256. (struct build-state (ch ; channel to hold the state while target is running target-state ; key -> (cons sha256 dep-sha256s) | 'pending | channel target-accum ; key -> dep-sha256s db ; key -> (cons sha256 dep-sha256s) | #t [for db file itself] time-cache ; key -> (cons timestamp sha256) saw-targets ; key -> target [to detect multiple for same output] thread-count ; channel to hold thread-scheduler state thread-seens ; sym -> hash [to detect cycles when count goes to 0] resourcer ; build stat's resource manager log? ; logging enabled? uni? ; just one job? dry-run-mode)) ; #f, 'dry-run, 'question, or 'would ;; Main entry point to build a target `t` (define (build t-in [token #f] [options (hash)]) (let ([t (coerce-to-target* t-in)]) (unless (target? t) (arg-error 'build "target or list of targets" t-in)) (unless (hash? options) (arg-error 'build "hash table" options)) (unless (or (not token) (token? token)) (arg-error 'build "build token or #f" token)) (let* ([resourcer (and token (token-resourcer token))] [given-num-jobs (if token ;; we only need whether it's 1 job or more: (if (token-uni? token) 1 2) (hash-ref options 'jobs #f))] [seen (hash)]) ;; Start a threading context, so we can have parallel build tasks ((if token (lambda (th) (th)) call-in-main-thread) (lambda () (define jobserver-resourcer (and (not resourcer) (not given-num-jobs) (maybe-jobserver-client))) (define num-jobs (or given-num-jobs (and jobserver-resourcer ;; assume jobserver allows more than 1: 2) (default-jobs))) (define state (build-state (channel) (hash) (hash) (hash) (hash) (hash) 1 (hash) (or resourcer jobserver-resourcer (make-resourcer num-jobs)) (or (hash-ref options 'log? #f) (assoc "ZUO_BUILD_LOG" (hash-ref (runtime-env) 'env))) (= num-jobs 1) (hash-ref options 'dry-run-mode (maybe-dry-run-mode)))) (when resourcer (release-resource state "nested")) (define end-state (do-build t state seen #t)) (when resourcer (acquire-resource state "continue from nested")) (when (eq? 'would (build-state-dry-run-mode end-state)) (exit 1))))))) (define (build/maybe-dep t-in token add-dep?) (unless (token? token) (arg-error 'build/dep "build token" token)) (let ([t (coerce-to-target t-in)]) (unless (target? t) (arg-error 'build/dep "target" t-in)) (when (and (symbol? (target-name t)) (not (symbol? (target-name (token-target token))))) (error "build/dep: cannot recur with a phony or data target")) (let* ([state (get-state (token-ch token) "dep")] [acquire? (cond [(eq? 'input (target-kind t)) ;; This shortcut avoids release a resource that may ;; be needed to complete a target and having other ;; targets run (and potentially fail) meanwhile #f] [else (release-resource state "dep") #t])] [state (do-build t state (token-seen token) #t)] [state (if add-dep? (record-target-accumulated state (token-target token) t) state)]) (put-state (token-ch token) state "dep") (when acquire? (acquire-resource state "continue from dep"))))) (define (build/dep t-in token) (build/maybe-dep t-in token #t)) (define (build/no-dep t-in token) (build/maybe-dep t-in token #f)) ;; Detects already built or cycles, and waits for in-progress (as ;; represented by a channel) to complete (define (do-build t state seen top?) (cond [(hash-ref seen (target-key t) #f) (error "build: dependency cycle" (target-name t))] [else (let ([state (ensure-consistent state t)]) (define current (target-state state t)) (cond [(not current) (force-build t (build-input-or-unbuilt t state seen top?) seen)] [(channel? current) (force-build t state seen)] [else state]))])) ;; Blocks until an in-progress target completes (define (force-build t state seen) (define current (target-state state t)) (cond [(channel? current) (define (ready-again) ;; Put value back to potentially satisfy some other waiting thread: (channel-put current 'still-done)) (cond [(channel-try-get current) (ready-again) state] [else ;; Waiting on the channel might block, so relinquish state (define th-key (string->uninterned-symbol "thread")) (define new-state (check/add-blocking-dependency state seen t th-key)) (put-state (build-state-ch new-state) new-state "force") (channel-get current) (ready-again) (remove-blocking-dependency (get-state (build-state-ch new-state) "force") th-key)])] [else state])) ;; Shortcut for plain inputs, otherwise starts a build (define (build-input-or-unbuilt t state seen top?) (when (build-state-log? state) (alert (~a "checking " (target-name t)))) (cond [(eq? (target-kind t) 'input) ;; no dependencies, not need for a thread to build, etc. (define r ((target-get-rule t) (target-name t) #f)) (define sha256 (or (rule-sha256 r) (file-sha256/state (target-path t) state))) (when (equal? sha256 no-sha256) ((rule-build r))) (update-target-state state t (list sha256))] [else (call-with-name+stack (target-name t) seen (lambda () (build-unbuilt t state seen top?)))])) ;; Starts a build for a specific target (define (build-unbuilt t state seen top?) (define path (target-name t)) (define co-outputs (if (string? path) (hash-ref (target-options t) 'co-outputs '()) '())) (define alert-top? (and top? (not (hash-ref (target-options t) 'quiet? #f)))) (define dep-top? (and alert-top? (symbol? path))) (define new-seen (hash-set (hash-set seen (target-key t) #t) stack-key (cons path (hash-ref seen stack-key '())))) ;; delete a target file if we don't finish: (define path-handle (and (path-string? path) (not (hash-ref (target-options t) 'precious? #f)) (cleanable-file path))) ;; get previously recorded result, possibly loading from a file ;; that is cached in the build state (define loaded-state (load-sha256s state t path)) (define prev-ts (previous-target-state loaded-state (target-key t))) (define prev-sha256 (car prev-ts)) (define prev-dep-sha256s/raw-symbols (cdr prev-ts)) ;; record a channel as the start's current build state (define result-ch (channel)) (define queued-state (update-target-state loaded-state t result-ch)) (define tok (token t (build-state-ch state) new-seen (build-state-resourcer state) (build-state-uni? state))) (put-state (token-ch tok) queued-state "rule") ;; first phase of the target: get a rule (define r ((target-get-rule t) (target-name t) tok)) (unless (rule? r) (error "build: target result is not a rule" r)) (define deps (rule-deps r)) (define sha256 (or (rule-sha256 r) (if (pair? co-outputs) (files-sha256 (cons path co-outputs) tok) (file-sha256 path tok)))) (define to-build (rule-build r)) (define build-to-sha256? (and (rule-sha256 r) #t)) ;; if we recorded any data targets, we need to fix up the keys (define prev-dep-sha256s (foldl (lambda (dep-key dep-sha256s) (cond [(symbol-key? dep-key) (let ([actual-key (translate-key dep-key deps t)]) (hash-set (hash-remove dep-sha256s dep-key) actual-key (hash-ref dep-sha256s dep-key)))] [else dep-sha256s])) prev-dep-sha256s/raw-symbols (hash-keys prev-dep-sha256s/raw-symbols))) (define rule-state (get-state (token-ch tok) "rule")) ;; trigger builds of dependencies, but don't want for them to complete (define fetch-state (foldl (make-fetch-dep rule-state new-seen dep-top?) rule-state deps)) ;; now that they're all potentially started, wait for completions (define new-state (foldl (lambda (dep state) (do-build dep state new-seen dep-top?)) fetch-state deps)) ;; extract results, assemble in a hash table: -> (define dep-reported-sha256s (foldl (lambda (dep dep-sha256s) (add-dependent-target-state dep dep-sha256s new-state)) (hash) deps)) (define dep-sha256s (cdr (merge-target-accumulated new-state t (cons #f dep-reported-sha256s)))) ;; calling the build step for `t` might generate more dependencies, but those ;; extra dependencies are supposed to be determined only by the ones declared ;; so far; so, if the dependencies declares so far are consistent with recorded ;; dependencies, and if the target's current hash matches the prvious result, ;; then we can assume that the extra dependencies generated previously are still ;; the extra dependencies this time (define same-so-far? (and (log-changed (and (equal? sha256 prev-sha256) (not (equal? sha256 no-sha256))) path state) (andmap (lambda (dep-key) (log-changed (equal? (hash-ref dep-sha256s dep-key) (hash-ref prev-dep-sha256s dep-key #f)) dep-key state)) (hash-keys dep-sha256s)))) (define more-deps (if same-so-far? (foldl (lambda (dep-key more-sha256s) ;; currently, we assume that any additional dependencies ;; added in the build phase were and would be inputs (if (or (hash-ref dep-sha256s dep-key #f) (symbol-key? dep-key)) more-sha256s (cons (input-file-target (symbol->string dep-key)) more-sha256s))) '() (hash-keys prev-dep-sha256s)) '())) (define fetch-again-state (foldl (make-fetch-dep new-state new-seen dep-top?) new-state more-deps)) (define newer-state (foldl (lambda (dep state) (do-build dep state new-seen dep-top?)) fetch-again-state more-deps)) (define all-dep-sha256s (foldl (lambda (dep dep-sha256s) (add-dependent-target-state dep dep-sha256s newer-state)) dep-sha256s more-deps)) ;; compare to recorded result, and rebuild if different (cond [(and same-so-far? (andmap (lambda (dep-key) (log-changed (equal? (hash-ref all-dep-sha256s dep-key #f) (hash-ref prev-dep-sha256s dep-key #f)) dep-key state)) (hash-keys all-dep-sha256s))) ;; no need to rebuild (when path-handle (cleanable-cancel path-handle)) (when (and (or alert-top? (hash-ref (target-options t) 'noisy? #f)) (equal? prev-sha256 sha256) (not (equal? sha256 phony-sha256))) (alert (~a (target-name t) " is up to date"))) (define done-state (update-target-state newer-state t (cons sha256 all-dep-sha256s))) (channel-put result-ch 'done) done-state] [(and (build-state-dry-run-mode newer-state) (not (hash-ref (target-options t) 'recur? #f))) (define mode (build-state-dry-run-mode newer-state)) (when (eq? mode 'dry-run) (alert (~a "would build target: " (target-name t)))) (define done-state (update-target-state newer-state t (cons no-sha256 all-dep-sha256s))) (channel-put result-ch 'done) (if (eq? mode 'question) (build-state-set-dry-run-mode done-state 'would) done-state)] [else (unless to-build (error "build: out-of-date target has no build procedure" (target-name t))) (define (build-one finish) (let* ([maybe-sha256 (to-build)] ; build! [sha256 (if build-to-sha256? maybe-sha256 (if (pair? co-outputs) (files-sha256 (cons path co-outputs) tok) (file-sha256 path tok)))]) (unless (sha256? sha256) (error "build: target-build result is not a sha256" sha256)) (when (equal? sha256 no-sha256) (error "rule for target did not create it" (if (pair? co-outputs) (cons path co-outputs) path))) (when path-handle (cleanable-cancel path-handle)) (finish (lambda (state) ;; record result: (let* ([ts (if (eq? sha256 phony-sha256) (cons no-sha256 (hash)) (cons sha256 dep-sha256s))] [ts (merge-target-accumulated state t ts)] [state (update-target-state/record-sha256s state t ts co-outputs)]) (channel-put result-ch 'done) state))))) (let ([state-ch (build-state-ch newer-state)]) (cond [(hash-ref (target-options t) 'eager? #f) ;; run build in this thread (put-state state-ch newer-state "build") (build-one (lambda (proc) (proc (get-state state-ch "build"))))] [else ;; run build in its own thread (thread* newer-state (lambda () (acquire-resource newer-state path) ; limits process parallelism (build-one (lambda (proc) (release-resource newer-state path) (let* ([state (get-state state-ch "tbuild")] [state (proc state)]) (put-state state-ch (thread-done state) "tbuild"))))))]))])) (define (make-fetch-dep state seen top?) (if (build-state-uni? state) (lambda (dep state) state) (let ([state-ch (build-state-ch state)]) (lambda (dep state) ;; No one waits for the this thread's work, and it doesn't ;; actually use the build result. It just creates a demand for ;; the build result, so the demand exists concurrent to waiting ;; on dependencies. (thread* state (lambda () (let* ([state (get-state state-ch "fetch")] [state (do-build dep state seen top?)]) (put-state state-ch (thread-done state) "fetch")))))))) ;; Alternative entry point suitable for use from a script's `main` (define (build/command-line targets [opts (hash)]) (unless (and (list? targets) (andmap target? targets)) (arg-error 'build/command-line "list of targets" targets)) (unless (hash? opts) (arg-error 'build/command-line "hash table" opts)) (command-line :args-in (or (hash-ref opts 'args #f) (hash-ref (runtime-env) 'args)) :usage (or (hash-ref opts 'usage #f) "[