quickjs: new spell, QuickJS Javascript Engine

7 files changed, 405 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 06f924b58c..a8355da25b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2019-07-11 Vlad Glagolev <stealth@sourcemage.org>
+	* devel/quickjs: new spell, QuickJS Javascript Engine
+
 2019-07-10 Vlad Glagolev <stealth@sourcemage.org>
 	* wm-addons/rofi: new spell, window switcher, application launcher and
 	  dmenu replacement
diff --git a/devel/quickjs/BUILD b/devel/quickjs/BUILD
new file mode 100755
index 0000000000..9987415c1b
--- /dev/null
+++ b/devel/quickjs/BUILD
@@ -0,0 +1 @@
+make prefix="${INSTALL_ROOT}/usr"
diff --git a/devel/quickjs/DETAILS b/devel/quickjs/DETAILS
new file mode 100755
index 0000000000..85453c467e
--- /dev/null
+++ b/devel/quickjs/DETAILS
@@ -0,0 +1,19 @@
+           SPELL=quickjs
+         VERSION=2019-07-09
+          SOURCE=${SPELL}-${VERSION}.tar.xz
+   SOURCE_URL[0]=https://bellard.org/${SPELL}/${SOURCE}
+     SOURCE_HASH=sha512:db2498659ae1c22e5c0a24e0f2d582db6003e18a182a80f407b1ee8779edddff473572bcfecd1584281c65af8c428b2794d1c7aae90ec87e4338f7bbd9a61b7c
+SOURCE_DIRECTORY="${BUILD_DIRECTORY}/${SPELL}-${VERSION}"
+        DOC_DIRS="examples ${DOC_DIRS}"
+            DOCS="TODO ${DOCS}"
+        WEB_SITE=https://bellard.org/quickjs/
+      LICENSE[0]=MIT
+         ENTERED=20190711
+           SHORT="QuickJS Javascript Engine"
+cat << EOF
+QuickJS is a small and embeddable Javascript engine. It supports the ES2019
+specification including modules, asynchronous generators and proxies.
+
+It optionally supports mathematical extensions such as big integers (BigInt),
+big floating point numbers (BigFloat) and operator overloading.
+EOF
diff --git a/devel/quickjs/HISTORY b/devel/quickjs/HISTORY
new file mode 100644
index 0000000000..ece0de55a1
--- /dev/null
+++ b/devel/quickjs/HISTORY
@@ -0,0 +1,3 @@
+2019-07-11 Vlad Glagolev <stealth@sourcemage.org>
+	* DETAILS, {PRE_,}BUILD, INSTALL, stdatomic.h: created spell, version
+	  2019-07-11
diff --git a/devel/quickjs/INSTALL b/devel/quickjs/INSTALL
new file mode 100755
index 0000000000..8a3ae87fea
--- /dev/null
+++ b/devel/quickjs/INSTALL
@@ -0,0 +1 @@
+make prefix="${INSTALL_ROOT}/usr" install
diff --git a/devel/quickjs/PRE_BUILD b/devel/quickjs/PRE_BUILD
new file mode 100755
index 0000000000..18edf256e4
--- /dev/null
+++ b/devel/quickjs/PRE_BUILD
@@ -0,0 +1,9 @@
+default_pre_build &&
+cd "${SOURCE_DIRECTORY}" &&
+
+sedit "s:-O2:${CFLAGS}:;s:CFLAGS=-g:CFLAGS=:;/^LDFLAGS=-g/d;/^CONFIG_LTO=/d;/^CONFIG_M32=/d" Makefile &&
+
+if spell_ok gcc && is_version_less $(installed_version gcc) 4.9; then
+  cp -v "${SPELL_DIRECTORY}/stdatomic.h" . &&
+  sedit "s:<stdatomic\.h>:\"stdatomic\.h\":" quickjs.c
+fi
diff --git a/devel/quickjs/stdatomic.h b/devel/quickjs/stdatomic.h
new file mode 100644
index 0000000000..6af810f7fb
--- /dev/null
+++ b/devel/quickjs/stdatomic.h
@@ -0,0 +1,369 @@
+/*
+ * An implementation of C11 stdatomic.h directly borrowed from FreeBSD
+ * (original copyright follows), with minor modifications for
+ * portability to other systems. Works for recent Clang (that
+ * implement the feature c_atomic) and GCC 4.7+; includes
+ * compatibility for GCC below 4.7 but I wouldn't recommend it.
+ *
+ * Caveats and limitations:
+ * - Only the ``_Atomic parentheses'' notation is implemented, while
+ *   the ``_Atomic space'' one is not.
+ * - _Atomic types must be typedef'ed, or programs using them will
+ *   not type check correctly (incompatible anonymous structure
+ *   types).
+ * - Non-scalar _Atomic types would require runtime support for
+ *   runtime locking, which, as far as I know, is not currently
+ *   available on any system.
+ */
+
+/*-
+ * Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
+ *                    David Chisnall <theraven@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/include/stdatomic.h,v 1.10.2.2 2012/05/30 19:21:54 theraven Exp $
+ */
+
+#ifndef _STDATOMIC_H_
+#define	_STDATOMIC_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#if !defined(__has_feature)
+#define __has_feature(x) 0
+#endif
+#if !defined(__has_builtin)
+#define __has_builtin(x) 0
+#endif
+#if !defined(__GNUC_PREREQ__)
+#if defined(__GNUC__) && defined(__GNUC_MINOR__)
+#define __GNUC_PREREQ__(maj, min)					\
+	((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+#define __GNUC_PREREQ__(maj, min) 0
+#endif
+#endif
+
+#if !defined(__CLANG_ATOMICS) && !defined(__GNUC_ATOMICS)
+#if __has_feature(c_atomic)
+#define	__CLANG_ATOMICS
+#elif __GNUC_PREREQ__(4, 7)
+#define	__GNUC_ATOMICS
+#elif !defined(__GNUC__)
+#error "stdatomic.h does not support your compiler"
+#endif
+#endif
+
+#if !defined(__CLANG_ATOMICS)
+#define	_Atomic(T)			struct { volatile __typeof__(T) __val; }
+#endif
+
+/*
+ * 7.17.2 Initialization.
+ */
+
+#if defined(__CLANG_ATOMICS)
+#define	ATOMIC_VAR_INIT(value)		(value)
+#define	atomic_init(obj, value)		__c11_atomic_init(obj, value)
+#else
+#define	ATOMIC_VAR_INIT(value)		{ .__val = (value) }
+#define	atomic_init(obj, value) do {					\
+	(obj)->__val = (value);						\
+} while (0)
+#endif
+
+/*
+ * Clang and recent GCC both provide predefined macros for the memory
+ * orderings.  If we are using a compiler that doesn't define them, use the
+ * clang values - these will be ignored in the fallback path.
+ */
+
+#ifndef __ATOMIC_RELAXED
+#define __ATOMIC_RELAXED		0
+#endif
+#ifndef __ATOMIC_CONSUME
+#define __ATOMIC_CONSUME		1
+#endif
+#ifndef __ATOMIC_ACQUIRE
+#define __ATOMIC_ACQUIRE		2
+#endif
+#ifndef __ATOMIC_RELEASE
+#define __ATOMIC_RELEASE		3
+#endif
+#ifndef __ATOMIC_ACQ_REL
+#define __ATOMIC_ACQ_REL		4
+#endif
+#ifndef __ATOMIC_SEQ_CST
+#define __ATOMIC_SEQ_CST		5
+#endif
+
+/*
+ * 7.17.3 Order and consistency.
+ *
+ * The memory_order_* constants that denote the barrier behaviour of the
+ * atomic operations.
+ */
+
+enum memory_order {
+	memory_order_relaxed = __ATOMIC_RELAXED,
+	memory_order_consume = __ATOMIC_CONSUME,
+	memory_order_acquire = __ATOMIC_ACQUIRE,
+	memory_order_release = __ATOMIC_RELEASE,
+	memory_order_acq_rel = __ATOMIC_ACQ_REL,
+	memory_order_seq_cst = __ATOMIC_SEQ_CST
+};
+
+typedef enum memory_order memory_order;
+
+/*
+ * 7.17.4 Fences.
+ */
+
+#ifdef __CLANG_ATOMICS
+#define	atomic_thread_fence(order)	__c11_atomic_thread_fence(order)
+#define	atomic_signal_fence(order)	__c11_atomic_signal_fence(order)
+#elif defined(__GNUC_ATOMICS)
+#define	atomic_thread_fence(order)	__atomic_thread_fence(order)
+#define	atomic_signal_fence(order)	__atomic_signal_fence(order)
+#else
+#define	atomic_thread_fence(order)	__sync_synchronize()
+#define	atomic_signal_fence(order)	__asm volatile ("" : : : "memory")
+#endif
+
+/*
+ * 7.17.5 Lock-free property.
+ */
+
+#if defined(__CLANG_ATOMICS)
+#define	atomic_is_lock_free(obj) \
+	__c11_atomic_is_lock_free(sizeof(obj))
+#elif defined(__GNUC_ATOMICS)
+#define	atomic_is_lock_free(obj) \
+	__atomic_is_lock_free(sizeof((obj)->__val))
+#else
+#define	atomic_is_lock_free(obj) \
+	(sizeof((obj)->__val) <= sizeof(void *))
+#endif
+
+/*
+ * 7.17.6 Atomic integer types.
+ */
+
+typedef _Atomic(_Bool)			atomic_bool;
+typedef _Atomic(char)			atomic_char;
+typedef _Atomic(signed char)		atomic_schar;
+typedef _Atomic(unsigned char)		atomic_uchar;
+typedef _Atomic(short)			atomic_short;
+typedef _Atomic(unsigned short)		atomic_ushort;
+typedef _Atomic(int)			atomic_int;
+typedef _Atomic(unsigned int)		atomic_uint;
+typedef _Atomic(long)			atomic_long;
+typedef _Atomic(unsigned long)		atomic_ulong;
+typedef _Atomic(long long)		atomic_llong;
+typedef _Atomic(unsigned long long)	atomic_ullong;
+#if 0
+typedef _Atomic(char16_t)		atomic_char16_t;
+typedef _Atomic(char32_t)		atomic_char32_t;
+#endif
+typedef _Atomic(wchar_t)		atomic_wchar_t;
+typedef _Atomic(int_least8_t)		atomic_int_least8_t;
+typedef _Atomic(uint_least8_t)		atomic_uint_least8_t;
+typedef _Atomic(int_least16_t)		atomic_int_least16_t;
+typedef _Atomic(uint_least16_t)		atomic_uint_least16_t;
+typedef _Atomic(int_least32_t)		atomic_int_least32_t;
+typedef _Atomic(uint_least32_t)		atomic_uint_least32_t;
+typedef _Atomic(int_least64_t)		atomic_int_least64_t;
+typedef _Atomic(uint_least64_t)		atomic_uint_least64_t;
+typedef _Atomic(int_fast8_t)		atomic_int_fast8_t;
+typedef _Atomic(uint_fast8_t)		atomic_uint_fast8_t;
+typedef _Atomic(int_fast16_t)		atomic_int_fast16_t;
+typedef _Atomic(uint_fast16_t)		atomic_uint_fast16_t;
+typedef _Atomic(int_fast32_t)		atomic_int_fast32_t;
+typedef _Atomic(uint_fast32_t)		atomic_uint_fast32_t;
+typedef _Atomic(int_fast64_t)		atomic_int_fast64_t;
+typedef _Atomic(uint_fast64_t)		atomic_uint_fast64_t;
+typedef _Atomic(intptr_t)		atomic_intptr_t;
+typedef _Atomic(uintptr_t)		atomic_uintptr_t;
+typedef _Atomic(size_t)			atomic_size_t;
+typedef _Atomic(ptrdiff_t)		atomic_ptrdiff_t;
+typedef _Atomic(intmax_t)		atomic_intmax_t;
+typedef _Atomic(uintmax_t)		atomic_uintmax_t;
+
+/*
+ * 7.17.7 Operations on atomic types.
+ */
+
+/*
+ * Compiler-specific operations.
+ */
+
+#if defined(__CLANG_ATOMICS)
+#define	atomic_compare_exchange_strong_explicit(object, expected,	\
+    desired, success, failure)						\
+	__c11_atomic_compare_exchange_strong(object, expected, desired,	\
+	    success, failure)
+#define	atomic_compare_exchange_weak_explicit(object, expected,		\
+    desired, success, failure)						\
+	__c11_atomic_compare_exchange_weak(object, expected, desired,	\
+	    success, failure)
+#define	atomic_exchange_explicit(object, desired, order)		\
+	__c11_atomic_exchange(object, desired, order)
+#define	atomic_fetch_add_explicit(object, operand, order)		\
+	__c11_atomic_fetch_add(object, operand, order)
+#define	atomic_fetch_and_explicit(object, operand, order)		\
+	__c11_atomic_fetch_and(object, operand, order)
+#define	atomic_fetch_or_explicit(object, operand, order)		\
+	__c11_atomic_fetch_or(object, operand, order)
+#define	atomic_fetch_sub_explicit(object, operand, order)		\
+	__c11_atomic_fetch_sub(object, operand, order)
+#define	atomic_fetch_xor_explicit(object, operand, order)		\
+	__c11_atomic_fetch_xor(object, operand, order)
+#define	atomic_load_explicit(object, order)				\
+	__c11_atomic_load(object, order)
+#define	atomic_store_explicit(object, desired, order)			\
+	__c11_atomic_store(object, desired, order)
+#elif defined(__GNUC_ATOMICS)
+#define	atomic_compare_exchange_strong_explicit(object, expected,	\
+    desired, success, failure)						\
+	__atomic_compare_exchange_n(&(object)->__val, expected,		\
+	    desired, 0, success, failure)
+#define	atomic_compare_exchange_weak_explicit(object, expected,		\
+    desired, success, failure)						\
+	__atomic_compare_exchange_n(&(object)->__val, expected,		\
+	    desired, 1, success, failure)
+#define	atomic_exchange_explicit(object, desired, order)		\
+	__atomic_exchange_n(&(object)->__val, desired, order)
+#define	atomic_fetch_add_explicit(object, operand, order)		\
+	__atomic_fetch_add(&(object)->__val, operand, order)
+#define	atomic_fetch_and_explicit(object, operand, order)		\
+	__atomic_fetch_and(&(object)->__val, operand, order)
+#define	atomic_fetch_or_explicit(object, operand, order)		\
+	__atomic_fetch_or(&(object)->__val, operand, order)
+#define	atomic_fetch_sub_explicit(object, operand, order)		\
+	__atomic_fetch_sub(&(object)->__val, operand, order)
+#define	atomic_fetch_xor_explicit(object, operand, order)		\
+	__atomic_fetch_xor(&(object)->__val, operand, order)
+#define	atomic_load_explicit(object, order)				\
+	__atomic_load_n(&(object)->__val, order)
+#define	atomic_store_explicit(object, desired, order)			\
+	__atomic_store_n(&(object)->__val, desired, order)
+#else
+#define	atomic_compare_exchange_strong_explicit(object, expected,	\
+    desired, success, failure) ({					\
+	__typeof__((object)->__val) __v;				\
+	_Bool __r;							\
+	__v = __sync_val_compare_and_swap(&(object)->__val,		\
+	    *(expected), desired);					\
+	__r = *(expected) == __v;					\
+	*(expected) = __v;						\
+	__r;								\
+})
+
+#define	atomic_compare_exchange_weak_explicit(object, expected,		\
+    desired, success, failure)						\
+	atomic_compare_exchange_strong_explicit(object, expected,	\
+		desired, success, failure)
+#if __has_builtin(__sync_swap)
+/* Clang provides a full-barrier atomic exchange - use it if available. */
+#define atomic_exchange_explicit(object, desired, order)		\
+	__sync_swap(&(object)->__val, desired)
+#else
+/*
+ * __sync_lock_test_and_set() is only an acquire barrier in theory (although in
+ * practice it is usually a full barrier) so we need an explicit barrier after
+ * it.
+ */
+#define	atomic_exchange_explicit(object, desired, order) ({		\
+	__typeof__((object)->__val) __v;				\
+	__v = __sync_lock_test_and_set(&(object)->__val, desired);	\
+	__sync_synchronize();						\
+	__v;								\
+})
+#endif
+#define	atomic_fetch_add_explicit(object, operand, order)		\
+	__sync_fetch_and_add(&(object)->__val, operand)
+#define	atomic_fetch_and_explicit(object, operand, order)		\
+	__sync_fetch_and_and(&(object)->__val, operand)
+#define	atomic_fetch_or_explicit(object, operand, order)		\
+	__sync_fetch_and_or(&(object)->__val, operand)
+#define	atomic_fetch_sub_explicit(object, operand, order)		\
+	__sync_fetch_and_sub(&(object)->__val, operand)
+#define	atomic_fetch_xor_explicit(object, operand, order)		\
+	__sync_fetch_and_xor(&(object)->__val, operand)
+#define	atomic_load_explicit(object, order)				\
+	__sync_fetch_and_add(&(object)->__val, 0)
+#define	atomic_store_explicit(object, desired, order) do {		\
+	__sync_synchronize();						\
+	(object)->__val = (desired);					\
+	__sync_synchronize();						\
+} while (0)
+#endif
+
+/*
+ * Convenience functions.
+ */
+
+#define	atomic_compare_exchange_strong(object, expected, desired)	\
+	atomic_compare_exchange_strong_explicit(object, expected,	\
+	    desired, memory_order_seq_cst, memory_order_seq_cst)
+#define	atomic_compare_exchange_weak(object, expected, desired)		\
+	atomic_compare_exchange_weak_explicit(object, expected,		\
+	    desired, memory_order_seq_cst, memory_order_seq_cst)
+#define	atomic_exchange(object, desired)				\
+	atomic_exchange_explicit(object, desired, memory_order_seq_cst)
+#define	atomic_fetch_add(object, operand)				\
+	atomic_fetch_add_explicit(object, operand, memory_order_seq_cst)
+#define	atomic_fetch_and(object, operand)				\
+	atomic_fetch_and_explicit(object, operand, memory_order_seq_cst)
+#define	atomic_fetch_or(object, operand)				\
+	atomic_fetch_or_explicit(object, operand, memory_order_seq_cst)
+#define	atomic_fetch_sub(object, operand)				\
+	atomic_fetch_sub_explicit(object, operand, memory_order_seq_cst)
+#define	atomic_fetch_xor(object, operand)				\
+	atomic_fetch_xor_explicit(object, operand, memory_order_seq_cst)
+#define	atomic_load(object)						\
+	atomic_load_explicit(object, memory_order_seq_cst)
+#define	atomic_store(object, desired)					\
+	atomic_store_explicit(object, desired, memory_order_seq_cst)
+
+/*
+ * 7.17.8 Atomic flag type and operations.
+ */
+
+typedef atomic_bool			atomic_flag;
+
+#define	ATOMIC_FLAG_INIT		ATOMIC_VAR_INIT(0)
+
+#define	atomic_flag_clear_explicit(object, order)			\
+	atomic_store_explicit(object, 0, order)
+#define	atomic_flag_test_and_set_explicit(object, order)		\
+	atomic_compare_exchange_strong_explicit(object, 0, 1, order, order)
+
+#define	atomic_flag_clear(object)					\
+	atomic_flag_clear_explicit(object, memory_order_seq_cst)
+#define	atomic_flag_test_and_set(object)				\
+	atomic_flag_test_and_set_explicit(object, memory_order_seq_cst)
+
+#endif /* !_STDATOMIC_H_ */