A (very dirty) configuration example of Project Panama.
init
+1606
+1
.direnv/flake-profile
+1
.direnv/flake-profile
···
1
+
flake-profile-9-link
+1
.direnv/flake-profile-9-link
+1
.direnv/flake-profile-9-link
···
1
+
/nix/store/b2bfk8m5hmvm4w9cgnyzj6gry94fyich-nix-shell-env
+1
.envrc
+1
.envrc
···
1
+
use flake
+45
.gitignore
+45
.gitignore
···
1
+
.gradle
2
+
build/
3
+
!gradle/wrapper/gradle-wrapper.jar
4
+
!**/src/main/**/build/
5
+
!**/src/test/**/build/
6
+
7
+
### IntelliJ IDEA ###
8
+
.idea/modules.xml
9
+
.idea/jarRepositories.xml
10
+
.idea/compiler.xml
11
+
.idea/libraries/
12
+
*.iws
13
+
*.iml
14
+
*.ipr
15
+
out/
16
+
!**/src/main/**/out/
17
+
!**/src/test/**/out/
18
+
19
+
### Kotlin ###
20
+
.kotlin
21
+
22
+
### Eclipse ###
23
+
.apt_generated
24
+
.classpath
25
+
.factorypath
26
+
.project
27
+
.settings
28
+
.springBeans
29
+
.sts4-cache
30
+
bin/
31
+
!**/src/main/**/bin/
32
+
!**/src/test/**/bin/
33
+
34
+
### NetBeans ###
35
+
/nbproject/private/
36
+
/nbbuild/
37
+
/dist/
38
+
/nbdist/
39
+
/.nb-gradle/
40
+
41
+
### VS Code ###
42
+
.vscode/
43
+
44
+
### Mac OS ###
45
+
.DS_Store
+10
.idea/.gitignore
+10
.idea/.gitignore
+6
.idea/AndroidProjectSystem.xml
+6
.idea/AndroidProjectSystem.xml
+31
.idea/gradle.xml
+31
.idea/gradle.xml
···
1
+
<?xml version="1.0" encoding="UTF-8"?>
2
+
<project version="4">
3
+
<component name="GradleMigrationSettings" migrationVersion="1" />
4
+
<component name="GradleSettings">
5
+
<option name="linkedExternalProjectsSettings">
6
+
<GradleProjectSettings>
7
+
<compositeConfiguration>
8
+
<compositeBuild compositeDefinitionSource="SCRIPT">
9
+
<builds>
10
+
<build path="$PROJECT_DIR$/buildSrc" name="buildSrc">
11
+
<projects>
12
+
<project path="$PROJECT_DIR$/buildSrc" />
13
+
</projects>
14
+
</build>
15
+
</builds>
16
+
</compositeBuild>
17
+
</compositeConfiguration>
18
+
<option name="externalProjectPath" value="$PROJECT_DIR$" />
19
+
<option name="gradleJvm" value="corretto-24" />
20
+
<option name="modules">
21
+
<set>
22
+
<option value="$PROJECT_DIR$" />
23
+
<option value="$PROJECT_DIR$/app" />
24
+
<option value="$PROJECT_DIR$/buildSrc" />
25
+
<option value="$PROJECT_DIR$/interop-panama" />
26
+
</set>
27
+
</option>
28
+
</GradleProjectSettings>
29
+
</option>
30
+
</component>
31
+
</project>
+7
.idea/kotlinc.xml
+7
.idea/kotlinc.xml
+9
.idea/misc.xml
+9
.idea/misc.xml
···
1
+
<project version="4">
2
+
<component name="ExternalStorageConfigurationManager" enabled="true" />
3
+
<component name="FrameworkDetectionExcludesConfiguration">
4
+
<file type="web" url="file://$PROJECT_DIR$" />
5
+
</component>
6
+
<component name="ProjectRootManager" version="2" languageLevel="JDK_24" default="true" project-jdk-name="corretto-24" project-jdk-type="JavaSDK">
7
+
<output url="file://$PROJECT_DIR$/out" />
8
+
</component>
9
+
</project>
+6
.idea/vcs.xml
+6
.idea/vcs.xml
+14
README.md
+14
README.md
···
1
+
# panama-exploration
2
+
3
+
This is an example configuration of Project Panama:
4
+
5
+
- `rust-src` cdylib crate connected as a library
6
+
- Dynamically generated bindings in `interop-panama`
7
+
- `app` Kotlin consumer module
8
+
- A Nix flake that includes everything you need to reproduce the results everywhere Nix is available
9
+
10
+
I **strongly advise** you to use what Nix flake provides through `nix develop` or `direnv allow`.
11
+
It’ll set up Cargo, glibc, and Azul Zulu Community JDK. That's all you need.
12
+
13
+
To run, simply execute `./gradlew run`. If you want to learn more about how it works, dive into `src-rust` crate
14
+
and `interop-panama` Gradle module, especially buildscript files.
+50
app/build.gradle.kts
+50
app/build.gradle.kts
···
1
+
plugins {
2
+
// Apply the shared build logic from a convention plugin.
3
+
// The shared code is located in `buildSrc/src/main/kotlin/kotlin-jvm.gradle.kts`.
4
+
id("buildsrc.convention.kotlin-jvm")
5
+
6
+
// Apply the Application plugin to add support for building an executable JVM application.
7
+
application
8
+
}
9
+
10
+
dependencies {
11
+
// Project "app" depends on project "utils". (Project paths are separated with ":", so ":utils" refers to the top-level "utils" project.)
12
+
implementation(project(":interop-panama"))
13
+
}
14
+
15
+
application {
16
+
// Define the Fully Qualified Name for the application main class
17
+
// (Note that Kotlin compiles `App.kt` to a class with FQN `com.example.app.AppKt`.)
18
+
mainClass = "org.example.app.AppKt"
19
+
20
+
applicationDefaultJvmArgs = listOf(
21
+
"--enable-native-access=ALL-UNNAMED",
22
+
)
23
+
}
24
+
25
+
val rustLibName = providers.provider {
26
+
when {
27
+
org.gradle.internal.os.OperatingSystem.current().isLinux -> "libsrc_rust.so"
28
+
else -> error("Unsupported operating system")
29
+
}
30
+
}
31
+
32
+
tasks.named<JavaExec>("run") {
33
+
dependsOn(":interop-panama:copyRustLib")
34
+
val nativeDir = project(":interop-panama").layout.buildDirectory.dir("native")
35
+
jvmArgs(
36
+
"--enable-native-access=ALL-UNNAMED",
37
+
"--illegal-native-access=deny",
38
+
"-Drust.library.path=${nativeDir.get().file(rustLibName.get()).asFile.absolutePath}"
39
+
)
40
+
}
41
+
42
+
tasks.withType<Test>().configureEach {
43
+
dependsOn(":interop-panama:copyRustLib")
44
+
val nativeDir = project(":interop-panama").layout.buildDirectory.dir("native")
45
+
jvmArgs(
46
+
"--enable-native-access=ALL-UNNAMED",
47
+
"--illegal-native-access=deny",
48
+
"-Drust.library.path=${nativeDir.get().file(rustLibName.get()).asFile.absolutePath}"
49
+
)
50
+
}
+20
app/src/main/kotlin/App.kt
+20
app/src/main/kotlin/App.kt
···
1
+
package org.example.app
2
+
3
+
import org.example.interop.ExternStruct
4
+
import org.example.interop.RustApi
5
+
import org.example.interop.jvm_interop_h
6
+
7
+
// if IDEA or Kotlin LSP is scared, run ./gradlew :interop-panama:generateJextractBindings.
8
+
// jvm_interop_h is a jextract-generated class.
9
+
fun main() {
10
+
println("Hello from Kotlin!")
11
+
println("Heavy Rust calculation: 40 + 2 = ${RustApi.add(40, 2)}")
12
+
println("Testing generated Java code: 40 + 2 = ${jvm_interop_h.add(40, 2)}")
13
+
14
+
// operating on Rust/C-defined structs
15
+
val struct = jvm_interop_h.extern_struct_new(60, 9) // this returns MemorySegment!
16
+
val xFromRust = ExternStruct.x(struct) // accessor methods - they read from MemorySegment
17
+
val yFromRust = ExternStruct.y(struct)
18
+
println("Rust owns these. x: $xFromRust, y: $yFromRust. also, xy = nice!")
19
+
jvm_interop_h.extern_struct_free(struct) // remember to clean after yourself!
20
+
}
+16
buildSrc/build.gradle.kts
+16
buildSrc/build.gradle.kts
···
1
+
plugins {
2
+
// The Kotlin DSL plugin provides a convenient way to develop convention plugins.
3
+
// Convention plugins are located in `src/main/kotlin`, with the file extension `.gradle.kts`,
4
+
// and are applied in the project's `build.gradle.kts` files as required.
5
+
`kotlin-dsl`
6
+
}
7
+
8
+
kotlin {
9
+
// Keep the build logic on a Kotlin-supported JDK even if runtime is newer.
10
+
jvmToolchain(24)
11
+
}
12
+
13
+
dependencies {
14
+
// Add a dependency on the Kotlin Gradle plugin, so that convention plugins can apply it.
15
+
implementation(libs.kotlinGradlePlugin)
16
+
}
+17
buildSrc/settings.gradle.kts
+17
buildSrc/settings.gradle.kts
···
1
+
dependencyResolutionManagement {
2
+
3
+
// Use Maven Central and the Gradle Plugin Portal for resolving dependencies in the shared build logic (`buildSrc`) project.
4
+
@Suppress("UnstableApiUsage")
5
+
repositories {
6
+
mavenCentral()
7
+
}
8
+
9
+
// Reuse the version catalog from the main build.
10
+
versionCatalogs {
11
+
create("libs") {
12
+
from(files("../gradle/libs.versions.toml"))
13
+
}
14
+
}
15
+
}
16
+
17
+
rootProject.name = "buildSrc"
+29
buildSrc/src/main/kotlin/kotlin-jvm.gradle.kts
+29
buildSrc/src/main/kotlin/kotlin-jvm.gradle.kts
···
1
+
// The code in this file is a convention plugin - a Gradle mechanism for sharing reusable build logic.
2
+
// `buildSrc` is a Gradle-recognized directory and every plugin there will be easily available in the rest of the build.
3
+
package buildsrc.convention
4
+
5
+
import org.gradle.api.tasks.testing.logging.TestLogEvent
6
+
7
+
plugins {
8
+
// Apply the Kotlin JVM plugin to add support for Kotlin in JVM projects.
9
+
kotlin("jvm")
10
+
}
11
+
12
+
kotlin {
13
+
// Use a specific Java version to make it easier to work in different environments.
14
+
jvmToolchain(24)
15
+
}
16
+
17
+
tasks.withType<Test>().configureEach {
18
+
// Configure all test Gradle tasks to use JUnitPlatform.
19
+
useJUnitPlatform()
20
+
21
+
// Log information about all test results, not only the failed ones.
22
+
testLogging {
23
+
events(
24
+
TestLogEvent.FAILED,
25
+
TestLogEvent.PASSED,
26
+
TestLogEvent.SKIPPED
27
+
)
28
+
}
29
+
}
+63
flake.lock
+63
flake.lock
···
1
+
{
2
+
"nodes": {
3
+
"fenix": {
4
+
"inputs": {
5
+
"nixpkgs": [
6
+
"nixpkgs"
7
+
],
8
+
"rust-analyzer-src": "rust-analyzer-src"
9
+
},
10
+
"locked": {
11
+
"lastModified": 1769929675,
12
+
"narHash": "sha256-EBpe7sXCPLs+qVePXbA7kc+Kmpmp0pWysEpjjEWTK+E=",
13
+
"rev": "78d518f5ca32a86dc767de481160dbae640c70cf",
14
+
"revCount": 2542,
15
+
"type": "tarball",
16
+
"url": "https://api.flakehub.com/f/pinned/nix-community/fenix/0.1.2542%2Brev-78d518f5ca32a86dc767de481160dbae640c70cf/019c1851-0ed1-7f81-b175-8e8bbad651e6/source.tar.gz"
17
+
},
18
+
"original": {
19
+
"type": "tarball",
20
+
"url": "https://flakehub.com/f/nix-community/fenix/0.1"
21
+
}
22
+
},
23
+
"nixpkgs": {
24
+
"locked": {
25
+
"lastModified": 1771369470,
26
+
"narHash": "sha256-0NBlEBKkN3lufyvFegY4TYv5mCNHbi5OmBDrzihbBMQ=",
27
+
"rev": "0182a361324364ae3f436a63005877674cf45efb",
28
+
"revCount": 948083,
29
+
"type": "tarball",
30
+
"url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.948083%2Brev-0182a361324364ae3f436a63005877674cf45efb/019c71f3-061e-7c0e-b75b-ea375738503a/source.tar.gz"
31
+
},
32
+
"original": {
33
+
"type": "tarball",
34
+
"url": "https://flakehub.com/f/NixOS/nixpkgs/0.1"
35
+
}
36
+
},
37
+
"root": {
38
+
"inputs": {
39
+
"fenix": "fenix",
40
+
"nixpkgs": "nixpkgs"
41
+
}
42
+
},
43
+
"rust-analyzer-src": {
44
+
"flake": false,
45
+
"locked": {
46
+
"lastModified": 1769857242,
47
+
"narHash": "sha256-3eKpRRzKz0KzY7CJzRXFm4POwEqbuTohyQ2ajI/zKvg=",
48
+
"owner": "rust-lang",
49
+
"repo": "rust-analyzer",
50
+
"rev": "17304e9c7e11d26139672d3d77aa498b1cae0d69",
51
+
"type": "github"
52
+
},
53
+
"original": {
54
+
"owner": "rust-lang",
55
+
"ref": "nightly",
56
+
"repo": "rust-analyzer",
57
+
"type": "github"
58
+
}
59
+
}
60
+
},
61
+
"root": "root",
62
+
"version": 7
63
+
}
+82
flake.nix
+82
flake.nix
···
1
+
{
2
+
description = "A Nix-flake-based Rust development environment";
3
+
4
+
inputs = {
5
+
nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1"; # unstable Nixpkgs
6
+
fenix = {
7
+
url = "https://flakehub.com/f/nix-community/fenix/0.1";
8
+
inputs.nixpkgs.follows = "nixpkgs";
9
+
};
10
+
};
11
+
12
+
outputs =
13
+
{ self, ... }@inputs:
14
+
15
+
let
16
+
supportedSystems = [
17
+
"x86_64-linux"
18
+
"aarch64-linux"
19
+
"x86_64-darwin"
20
+
"aarch64-darwin"
21
+
];
22
+
forEachSupportedSystem =
23
+
f:
24
+
inputs.nixpkgs.lib.genAttrs supportedSystems (
25
+
system:
26
+
f {
27
+
pkgs = import inputs.nixpkgs {
28
+
inherit system;
29
+
overlays = [
30
+
inputs.self.overlays.default
31
+
];
32
+
};
33
+
}
34
+
);
35
+
in
36
+
{
37
+
overlays.default = final: prev: {
38
+
rustToolchain =
39
+
with inputs.fenix.packages.${prev.stdenv.hostPlatform.system};
40
+
combine (
41
+
with stable;
42
+
[
43
+
clippy
44
+
rustc
45
+
cargo
46
+
rustfmt
47
+
rust-src
48
+
]
49
+
);
50
+
};
51
+
52
+
devShells = forEachSupportedSystem (
53
+
{ pkgs }:
54
+
{
55
+
default = pkgs.mkShell {
56
+
packages = with pkgs; [
57
+
clang
58
+
rustToolchain
59
+
openssl
60
+
pkg-config
61
+
cargo-deny
62
+
cargo-edit
63
+
cargo-watch
64
+
rust-analyzer
65
+
66
+
# Panama FFI
67
+
jextract
68
+
rust-cbindgen
69
+
70
+
zulu25
71
+
];
72
+
73
+
env = {
74
+
# Required by rust-analyzer
75
+
RUST_SRC_PATH = "${pkgs.rustToolchain}/lib/rustlib/src/rust/library";
76
+
CPATH = "${pkgs.glibc.dev}/include";
77
+
};
78
+
};
79
+
}
80
+
);
81
+
};
82
+
}
+9
gradle.properties
+9
gradle.properties
···
1
+
# Enable the build cache to save time by reusing outputs produced by other successful builds.
2
+
# https://docs.gradle.org/current/userguide/build_cache.html
3
+
org.gradle.caching=true
4
+
# Enable the configuration cache to reuse the build configuration and enable parallel task execution.
5
+
# (Note that some plugins may not yet be compatible with the configuration cache.)
6
+
# https://docs.gradle.org/current/userguide/configuration_cache.html
7
+
org.gradle.configuration-cache=true
8
+
# Prefer the JDK provided by JAVA_HOME (e.g. the dev shell) for toolchains.
9
+
org.gradle.java.installations.fromEnv=JAVA_HOME
+22
gradle/libs.versions.toml
+22
gradle/libs.versions.toml
···
1
+
# Version catalog is a central place for you to declare and version dependencies
2
+
# https://docs.gradle.org/current/userguide/platforms.html#sub:version-catalog
3
+
# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
4
+
5
+
[versions]
6
+
kotlin = "2.3.0"
7
+
kotlinxDatetime = "0.7.1"
8
+
kotlinxSerializationJSON = "1.9.0"
9
+
kotlinxCoroutines = "1.10.2"
10
+
11
+
[libraries]
12
+
kotlinGradlePlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
13
+
kotlinxDatetime = { module = "org.jetbrains.kotlinx:kotlinx-datetime", version.ref = "kotlinxDatetime" }
14
+
kotlinxSerialization = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinxSerializationJSON" }
15
+
kotlinxCoroutines = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinxCoroutines" }
16
+
17
+
# Libraries can be bundled together for easier import
18
+
[bundles]
19
+
kotlinxEcosystem = ["kotlinxDatetime", "kotlinxSerialization", "kotlinxCoroutines"]
20
+
21
+
[plugins]
22
+
kotlinPluginSerialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
gradle/wrapper/gradle-wrapper.jar
gradle/wrapper/gradle-wrapper.jar
This is a binary file and will not be displayed.
+6
gradle/wrapper/gradle-wrapper.properties
+6
gradle/wrapper/gradle-wrapper.properties
+234
gradlew
+234
gradlew
···
1
+
#!/bin/sh
2
+
3
+
#
4
+
# Copyright © 2015-2021 the original authors.
5
+
#
6
+
# Licensed under the Apache License, Version 2.0 (the "License");
7
+
# you may not use this file except in compliance with the License.
8
+
# You may obtain a copy of the License at
9
+
#
10
+
# https://www.apache.org/licenses/LICENSE-2.0
11
+
#
12
+
# Unless required by applicable law or agreed to in writing, software
13
+
# distributed under the License is distributed on an "AS IS" BASIS,
14
+
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15
+
# See the License for the specific language governing permissions and
16
+
# limitations under the License.
17
+
#
18
+
19
+
##############################################################################
20
+
#
21
+
# Gradle start up script for POSIX generated by Gradle.
22
+
#
23
+
# Important for running:
24
+
#
25
+
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
26
+
# noncompliant, but you have some other compliant shell such as ksh or
27
+
# bash, then to run this script, type that shell name before the whole
28
+
# command line, like:
29
+
#
30
+
# ksh Gradle
31
+
#
32
+
# Busybox and similar reduced shells will NOT work, because this script
33
+
# requires all of these POSIX shell features:
34
+
# * functions;
35
+
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
36
+
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
37
+
# * compound commands having a testable exit status, especially «case»;
38
+
# * various built-in commands including «command», «set», and «ulimit».
39
+
#
40
+
# Important for patching:
41
+
#
42
+
# (2) This script targets any POSIX shell, so it avoids extensions provided
43
+
# by Bash, Ksh, etc; in particular arrays are avoided.
44
+
#
45
+
# The "traditional" practice of packing multiple parameters into a
46
+
# space-separated string is a well documented source of bugs and security
47
+
# problems, so this is (mostly) avoided, by progressively accumulating
48
+
# options in "$@", and eventually passing that to Java.
49
+
#
50
+
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
51
+
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
52
+
# see the in-line comments for details.
53
+
#
54
+
# There are tweaks for specific operating systems such as AIX, CygWin,
55
+
# Darwin, MinGW, and NonStop.
56
+
#
57
+
# (3) This script is generated from the Groovy template
58
+
# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
59
+
# within the Gradle project.
60
+
#
61
+
# You can find Gradle at https://github.com/gradle/gradle/.
62
+
#
63
+
##############################################################################
64
+
65
+
# Attempt to set APP_HOME
66
+
67
+
# Resolve links: $0 may be a link
68
+
app_path=$0
69
+
70
+
# Need this for daisy-chained symlinks.
71
+
while
72
+
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
73
+
[ -h "$app_path" ]
74
+
do
75
+
ls=$( ls -ld "$app_path" )
76
+
link=${ls#*' -> '}
77
+
case $link in #(
78
+
/*) app_path=$link ;; #(
79
+
*) app_path=$APP_HOME$link ;;
80
+
esac
81
+
done
82
+
83
+
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
84
+
85
+
APP_NAME="Gradle"
86
+
APP_BASE_NAME=${0##*/}
87
+
88
+
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
89
+
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
90
+
91
+
# Use the maximum available, or set MAX_FD != -1 to use that value.
92
+
MAX_FD=maximum
93
+
94
+
warn () {
95
+
echo "$*"
96
+
} >&2
97
+
98
+
die () {
99
+
echo
100
+
echo "$*"
101
+
echo
102
+
exit 1
103
+
} >&2
104
+
105
+
# OS specific support (must be 'true' or 'false').
106
+
cygwin=false
107
+
msys=false
108
+
darwin=false
109
+
nonstop=false
110
+
case "$( uname )" in #(
111
+
CYGWIN* ) cygwin=true ;; #(
112
+
Darwin* ) darwin=true ;; #(
113
+
MSYS* | MINGW* ) msys=true ;; #(
114
+
NONSTOP* ) nonstop=true ;;
115
+
esac
116
+
117
+
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
118
+
119
+
120
+
# Determine the Java command to use to start the JVM.
121
+
if [ -n "$JAVA_HOME" ] ; then
122
+
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
123
+
# IBM's JDK on AIX uses strange locations for the executables
124
+
JAVACMD=$JAVA_HOME/jre/sh/java
125
+
else
126
+
JAVACMD=$JAVA_HOME/bin/java
127
+
fi
128
+
if [ ! -x "$JAVACMD" ] ; then
129
+
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
130
+
131
+
Please set the JAVA_HOME variable in your environment to match the
132
+
location of your Java installation."
133
+
fi
134
+
else
135
+
JAVACMD=java
136
+
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
137
+
138
+
Please set the JAVA_HOME variable in your environment to match the
139
+
location of your Java installation."
140
+
fi
141
+
142
+
# Increase the maximum file descriptors if we can.
143
+
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
144
+
case $MAX_FD in #(
145
+
max*)
146
+
MAX_FD=$( ulimit -H -n ) ||
147
+
warn "Could not query maximum file descriptor limit"
148
+
esac
149
+
case $MAX_FD in #(
150
+
'' | soft) :;; #(
151
+
*)
152
+
ulimit -n "$MAX_FD" ||
153
+
warn "Could not set maximum file descriptor limit to $MAX_FD"
154
+
esac
155
+
fi
156
+
157
+
# Collect all arguments for the java command, stacking in reverse order:
158
+
# * args from the command line
159
+
# * the main class name
160
+
# * -classpath
161
+
# * -D...appname settings
162
+
# * --module-path (only if needed)
163
+
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
164
+
165
+
# For Cygwin or MSYS, switch paths to Windows format before running java
166
+
if "$cygwin" || "$msys" ; then
167
+
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
168
+
CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
169
+
170
+
JAVACMD=$( cygpath --unix "$JAVACMD" )
171
+
172
+
# Now convert the arguments - kludge to limit ourselves to /bin/sh
173
+
for arg do
174
+
if
175
+
case $arg in #(
176
+
-*) false ;; # don't mess with options #(
177
+
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
178
+
[ -e "$t" ] ;; #(
179
+
*) false ;;
180
+
esac
181
+
then
182
+
arg=$( cygpath --path --ignore --mixed "$arg" )
183
+
fi
184
+
# Roll the args list around exactly as many times as the number of
185
+
# args, so each arg winds up back in the position where it started, but
186
+
# possibly modified.
187
+
#
188
+
# NB: a `for` loop captures its iteration list before it begins, so
189
+
# changing the positional parameters here affects neither the number of
190
+
# iterations, nor the values presented in `arg`.
191
+
shift # remove old arg
192
+
set -- "$@" "$arg" # push replacement arg
193
+
done
194
+
fi
195
+
196
+
# Collect all arguments for the java command;
197
+
# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
198
+
# shell script including quotes and variable substitutions, so put them in
199
+
# double quotes to make sure that they get re-expanded; and
200
+
# * put everything else in single quotes, so that it's not re-expanded.
201
+
202
+
set -- \
203
+
"-Dorg.gradle.appname=$APP_BASE_NAME" \
204
+
-classpath "$CLASSPATH" \
205
+
org.gradle.wrapper.GradleWrapperMain \
206
+
"$@"
207
+
208
+
# Use "xargs" to parse quoted args.
209
+
#
210
+
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
211
+
#
212
+
# In Bash we could simply go:
213
+
#
214
+
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
215
+
# set -- "${ARGS[@]}" "$@"
216
+
#
217
+
# but POSIX shell has neither arrays nor command substitution, so instead we
218
+
# post-process each arg (as a line of input to sed) to backslash-escape any
219
+
# character that might be a shell metacharacter, then use eval to reverse
220
+
# that process (while maintaining the separation between arguments), and wrap
221
+
# the whole thing up as a single "set" statement.
222
+
#
223
+
# This will of course break if any of these variables contains a newline or
224
+
# an unmatched quote.
225
+
#
226
+
227
+
eval "set -- $(
228
+
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
229
+
xargs -n1 |
230
+
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
231
+
tr '\n' ' '
232
+
)" '"$@"'
233
+
234
+
exec "$JAVACMD" "$@"
+89
gradlew.bat
+89
gradlew.bat
···
1
+
@rem
2
+
@rem Copyright 2015 the original author or authors.
3
+
@rem
4
+
@rem Licensed under the Apache License, Version 2.0 (the "License");
5
+
@rem you may not use this file except in compliance with the License.
6
+
@rem You may obtain a copy of the License at
7
+
@rem
8
+
@rem https://www.apache.org/licenses/LICENSE-2.0
9
+
@rem
10
+
@rem Unless required by applicable law or agreed to in writing, software
11
+
@rem distributed under the License is distributed on an "AS IS" BASIS,
12
+
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13
+
@rem See the License for the specific language governing permissions and
14
+
@rem limitations under the License.
15
+
@rem
16
+
17
+
@if "%DEBUG%" == "" @echo off
18
+
@rem ##########################################################################
19
+
@rem
20
+
@rem Gradle startup script for Windows
21
+
@rem
22
+
@rem ##########################################################################
23
+
24
+
@rem Set local scope for the variables with windows NT shell
25
+
if "%OS%"=="Windows_NT" setlocal
26
+
27
+
set DIRNAME=%~dp0
28
+
if "%DIRNAME%" == "" set DIRNAME=.
29
+
set APP_BASE_NAME=%~n0
30
+
set APP_HOME=%DIRNAME%
31
+
32
+
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
33
+
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
34
+
35
+
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
36
+
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
37
+
38
+
@rem Find java.exe
39
+
if defined JAVA_HOME goto findJavaFromJavaHome
40
+
41
+
set JAVA_EXE=java.exe
42
+
%JAVA_EXE% -version >NUL 2>&1
43
+
if "%ERRORLEVEL%" == "0" goto execute
44
+
45
+
echo.
46
+
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
47
+
echo.
48
+
echo Please set the JAVA_HOME variable in your environment to match the
49
+
echo location of your Java installation.
50
+
51
+
goto fail
52
+
53
+
:findJavaFromJavaHome
54
+
set JAVA_HOME=%JAVA_HOME:"=%
55
+
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
56
+
57
+
if exist "%JAVA_EXE%" goto execute
58
+
59
+
echo.
60
+
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
61
+
echo.
62
+
echo Please set the JAVA_HOME variable in your environment to match the
63
+
echo location of your Java installation.
64
+
65
+
goto fail
66
+
67
+
:execute
68
+
@rem Setup the command line
69
+
70
+
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
71
+
72
+
73
+
@rem Execute Gradle
74
+
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
75
+
76
+
:end
77
+
@rem End local scope for the variables with windows NT shell
78
+
if "%ERRORLEVEL%"=="0" goto mainEnd
79
+
80
+
:fail
81
+
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
82
+
rem the _cmd.exe /c_ return code!
83
+
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
84
+
exit /b 1
85
+
86
+
:mainEnd
87
+
if "%OS%"=="Windows_NT" endlocal
88
+
89
+
:omega
+82
interop-panama/build.gradle.kts
+82
interop-panama/build.gradle.kts
···
1
+
import org.gradle.internal.os.OperatingSystem
2
+
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
3
+
4
+
plugins {
5
+
// Apply the shared build logic from a convention plugin.
6
+
// The shared code is located in `buildSrc/src/main/kotlin/kotlin-jvm.gradle.kts`.
7
+
id("buildsrc.convention.kotlin-jvm")
8
+
id("java")
9
+
}
10
+
11
+
val rustProjectDir = rootProject.layout.projectDirectory.dir("src-rust")
12
+
val rustTargetDir = rustProjectDir.dir("target/debug")
13
+
val rustHeadersDir = rustProjectDir.dir("bindings")
14
+
val jextractOutputDir = layout.buildDirectory.dir("generated/jextract")
15
+
16
+
val rustLibFileName = providers.provider {
17
+
when {
18
+
OperatingSystem.current().isLinux -> "libsrc_rust.so"
19
+
else -> error("Unsupported operating system: ${OperatingSystem.current()}")
20
+
}
21
+
}
22
+
23
+
val buildRustCdylib by tasks.registering(Exec::class) {
24
+
group = "interop"
25
+
description = "Build src-rust cdylib with Cargo"
26
+
workingDir = rustProjectDir.asFile
27
+
commandLine("cargo", "build")
28
+
}
29
+
30
+
val copyRustLib by tasks.registering(Copy::class) {
31
+
group = "interop"
32
+
description = "Copy Rust shared library into interop build output"
33
+
dependsOn(buildRustCdylib)
34
+
from(rustTargetDir.file(rustLibFileName))
35
+
into(layout.buildDirectory.dir("native"))
36
+
}
37
+
38
+
val copyHeaders by tasks.registering(Copy::class) {
39
+
group = "interop"
40
+
description = "Copy generated headers into interop build output"
41
+
dependsOn(buildRustCdylib)
42
+
from(rustHeadersDir.file("jvm_interop.h"))
43
+
into(layout.buildDirectory.dir("native"))
44
+
}
45
+
46
+
// HACK: I'd rather interact with jextract as a build-time dependency, much like
47
+
// Rust's cbindgen crate in rust-src/build.rs
48
+
val generateJextractBindings by tasks.registering(Exec::class) {
49
+
group = "interop"
50
+
description = "Generate bindings from headers"
51
+
workingDir = layout.projectDirectory.asFile
52
+
dependsOn(copyRustLib, copyHeaders)
53
+
val nativeDir = layout.buildDirectory.dir("native").get().asFile
54
+
val nativeLibPath = layout.buildDirectory.dir("native").get().file(rustLibFileName).get().asFile.absolutePath
55
+
outputs.dir(jextractOutputDir)
56
+
commandLine(
57
+
"jextract",
58
+
"--include-dir", nativeDir.absolutePath,
59
+
"--output", jextractOutputDir.get().asFile.absolutePath,
60
+
"--target-package", "org.example.interop",
61
+
"--library", ":$nativeLibPath",
62
+
layout.buildDirectory.dir("native").get().file("jvm_interop.h").asFile.absolutePath
63
+
)
64
+
}
65
+
66
+
tasks.named("classes") {
67
+
dependsOn(generateJextractBindings)
68
+
}
69
+
70
+
sourceSets {
71
+
named("main") {
72
+
java.srcDir(jextractOutputDir)
73
+
}
74
+
}
75
+
76
+
tasks.withType<KotlinCompile>().configureEach {
77
+
dependsOn(generateJextractBindings)
78
+
}
79
+
80
+
dependencies {
81
+
testImplementation(kotlin("test"))
82
+
}
+30
interop-panama/src/main/kotlin/interop/Main.kt
+30
interop-panama/src/main/kotlin/interop/Main.kt
···
1
+
package org.example.interop
2
+
3
+
import java.lang.foreign.Arena
4
+
import java.lang.foreign.FunctionDescriptor
5
+
import java.lang.foreign.Linker
6
+
import java.lang.foreign.SymbolLookup
7
+
import java.lang.foreign.ValueLayout.JAVA_LONG
8
+
import java.nio.file.Path
9
+
10
+
object RustApi {
11
+
// Most of the time, you do not need to interact with these low-level APIs,
12
+
// as jextract generates bindings for you.
13
+
private val addHandle by lazy {
14
+
val libPath = System.getProperty("rust.library.path")
15
+
?: error("Missing -Drust.library.path JVM property")
16
+
17
+
val arena = Arena.ofAuto()
18
+
val symbols = SymbolLookup.libraryLookup(Path.of(libPath), arena)
19
+
val symbol = symbols.find("add")
20
+
.orElseThrow { IllegalStateException("Symbol 'add' not found in $libPath") }
21
+
22
+
Linker.nativeLinker().downcallHandle(
23
+
symbol,
24
+
FunctionDescriptor.of(JAVA_LONG, JAVA_LONG, JAVA_LONG)
25
+
)
26
+
}
27
+
28
+
fun add(left: Long, right: Long): Long =
29
+
addHandle.invoke(left, right) as Long
30
+
}
+25
settings.gradle.kts
+25
settings.gradle.kts
···
1
+
// The settings file is the entry point of every Gradle build.
2
+
// Its primary purpose is to define the subprojects.
3
+
// It is also used for some aspects of project-wide configuration, like managing plugins, dependencies, etc.
4
+
// https://docs.gradle.org/current/userguide/settings_file_basics.html
5
+
6
+
dependencyResolutionManagement {
7
+
// Use Maven Central as the default repository (where Gradle will download dependencies) in all subprojects.
8
+
@Suppress("UnstableApiUsage")
9
+
repositories {
10
+
mavenCentral()
11
+
}
12
+
}
13
+
14
+
plugins {
15
+
// Use the Foojay Toolchains plugin to automatically download JDKs required by subprojects.
16
+
id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
17
+
}
18
+
19
+
// Include the `app` and `utils` subprojects in the build.
20
+
// If there are changes in only one of the projects, Gradle will rebuild only the one that has changed.
21
+
// Learn more about structuring projects with Gradle - https://docs.gradle.org/8.7/userguide/multi_project_builds.html
22
+
include(":app")
23
+
include(":interop-panama")
24
+
25
+
rootProject.name = "panama-exploration"
+623
src-rust/Cargo.lock
+623
src-rust/Cargo.lock
···
1
+
# This file is automatically @generated by Cargo.
2
+
# It is not intended for manual editing.
3
+
version = 4
4
+
5
+
[[package]]
6
+
name = "anstream"
7
+
version = "0.6.21"
8
+
source = "registry+https://github.com/rust-lang/crates.io-index"
9
+
checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
10
+
dependencies = [
11
+
"anstyle",
12
+
"anstyle-parse",
13
+
"anstyle-query",
14
+
"anstyle-wincon",
15
+
"colorchoice",
16
+
"is_terminal_polyfill",
17
+
"utf8parse",
18
+
]
19
+
20
+
[[package]]
21
+
name = "anstyle"
22
+
version = "1.0.13"
23
+
source = "registry+https://github.com/rust-lang/crates.io-index"
24
+
checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
25
+
26
+
[[package]]
27
+
name = "anstyle-parse"
28
+
version = "0.2.7"
29
+
source = "registry+https://github.com/rust-lang/crates.io-index"
30
+
checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
31
+
dependencies = [
32
+
"utf8parse",
33
+
]
34
+
35
+
[[package]]
36
+
name = "anstyle-query"
37
+
version = "1.1.5"
38
+
source = "registry+https://github.com/rust-lang/crates.io-index"
39
+
checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
40
+
dependencies = [
41
+
"windows-sys",
42
+
]
43
+
44
+
[[package]]
45
+
name = "anstyle-wincon"
46
+
version = "3.0.11"
47
+
source = "registry+https://github.com/rust-lang/crates.io-index"
48
+
checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
49
+
dependencies = [
50
+
"anstyle",
51
+
"once_cell_polyfill",
52
+
"windows-sys",
53
+
]
54
+
55
+
[[package]]
56
+
name = "anyhow"
57
+
version = "1.0.101"
58
+
source = "registry+https://github.com/rust-lang/crates.io-index"
59
+
checksum = "5f0e0fee31ef5ed1ba1316088939cea399010ed7731dba877ed44aeb407a75ea"
60
+
61
+
[[package]]
62
+
name = "bitflags"
63
+
version = "2.11.0"
64
+
source = "registry+https://github.com/rust-lang/crates.io-index"
65
+
checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
66
+
67
+
[[package]]
68
+
name = "cbindgen"
69
+
version = "0.29.2"
70
+
source = "registry+https://github.com/rust-lang/crates.io-index"
71
+
checksum = "befbfd072a8e81c02f8c507aefce431fe5e7d051f83d48a23ffc9b9fe5a11799"
72
+
dependencies = [
73
+
"clap",
74
+
"heck",
75
+
"indexmap",
76
+
"log",
77
+
"proc-macro2",
78
+
"quote",
79
+
"serde",
80
+
"serde_json",
81
+
"syn",
82
+
"tempfile",
83
+
"toml",
84
+
]
85
+
86
+
[[package]]
87
+
name = "cfg-if"
88
+
version = "1.0.4"
89
+
source = "registry+https://github.com/rust-lang/crates.io-index"
90
+
checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
91
+
92
+
[[package]]
93
+
name = "clap"
94
+
version = "4.5.59"
95
+
source = "registry+https://github.com/rust-lang/crates.io-index"
96
+
checksum = "c5caf74d17c3aec5495110c34cc3f78644bfa89af6c8993ed4de2790e49b6499"
97
+
dependencies = [
98
+
"clap_builder",
99
+
]
100
+
101
+
[[package]]
102
+
name = "clap_builder"
103
+
version = "4.5.59"
104
+
source = "registry+https://github.com/rust-lang/crates.io-index"
105
+
checksum = "370daa45065b80218950227371916a1633217ae42b2715b2287b606dcd618e24"
106
+
dependencies = [
107
+
"anstream",
108
+
"anstyle",
109
+
"clap_lex",
110
+
"strsim",
111
+
]
112
+
113
+
[[package]]
114
+
name = "clap_lex"
115
+
version = "1.0.0"
116
+
source = "registry+https://github.com/rust-lang/crates.io-index"
117
+
checksum = "3a822ea5bc7590f9d40f1ba12c0dc3c2760f3482c6984db1573ad11031420831"
118
+
119
+
[[package]]
120
+
name = "colorchoice"
121
+
version = "1.0.4"
122
+
source = "registry+https://github.com/rust-lang/crates.io-index"
123
+
checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
124
+
125
+
[[package]]
126
+
name = "equivalent"
127
+
version = "1.0.2"
128
+
source = "registry+https://github.com/rust-lang/crates.io-index"
129
+
checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
130
+
131
+
[[package]]
132
+
name = "errno"
133
+
version = "0.3.14"
134
+
source = "registry+https://github.com/rust-lang/crates.io-index"
135
+
checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
136
+
dependencies = [
137
+
"libc",
138
+
"windows-sys",
139
+
]
140
+
141
+
[[package]]
142
+
name = "fastrand"
143
+
version = "2.3.0"
144
+
source = "registry+https://github.com/rust-lang/crates.io-index"
145
+
checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
146
+
147
+
[[package]]
148
+
name = "foldhash"
149
+
version = "0.1.5"
150
+
source = "registry+https://github.com/rust-lang/crates.io-index"
151
+
checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
152
+
153
+
[[package]]
154
+
name = "getrandom"
155
+
version = "0.4.1"
156
+
source = "registry+https://github.com/rust-lang/crates.io-index"
157
+
checksum = "139ef39800118c7683f2fd3c98c1b23c09ae076556b435f8e9064ae108aaeeec"
158
+
dependencies = [
159
+
"cfg-if",
160
+
"libc",
161
+
"r-efi",
162
+
"wasip2",
163
+
"wasip3",
164
+
]
165
+
166
+
[[package]]
167
+
name = "hashbrown"
168
+
version = "0.15.5"
169
+
source = "registry+https://github.com/rust-lang/crates.io-index"
170
+
checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
171
+
dependencies = [
172
+
"foldhash",
173
+
]
174
+
175
+
[[package]]
176
+
name = "hashbrown"
177
+
version = "0.16.1"
178
+
source = "registry+https://github.com/rust-lang/crates.io-index"
179
+
checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
180
+
181
+
[[package]]
182
+
name = "heck"
183
+
version = "0.5.0"
184
+
source = "registry+https://github.com/rust-lang/crates.io-index"
185
+
checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
186
+
187
+
[[package]]
188
+
name = "id-arena"
189
+
version = "2.3.0"
190
+
source = "registry+https://github.com/rust-lang/crates.io-index"
191
+
checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
192
+
193
+
[[package]]
194
+
name = "indexmap"
195
+
version = "2.13.0"
196
+
source = "registry+https://github.com/rust-lang/crates.io-index"
197
+
checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
198
+
dependencies = [
199
+
"equivalent",
200
+
"hashbrown 0.16.1",
201
+
"serde",
202
+
"serde_core",
203
+
]
204
+
205
+
[[package]]
206
+
name = "is_terminal_polyfill"
207
+
version = "1.70.2"
208
+
source = "registry+https://github.com/rust-lang/crates.io-index"
209
+
checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
210
+
211
+
[[package]]
212
+
name = "itoa"
213
+
version = "1.0.17"
214
+
source = "registry+https://github.com/rust-lang/crates.io-index"
215
+
checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
216
+
217
+
[[package]]
218
+
name = "leb128fmt"
219
+
version = "0.1.0"
220
+
source = "registry+https://github.com/rust-lang/crates.io-index"
221
+
checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
222
+
223
+
[[package]]
224
+
name = "libc"
225
+
version = "0.2.182"
226
+
source = "registry+https://github.com/rust-lang/crates.io-index"
227
+
checksum = "6800badb6cb2082ffd7b6a67e6125bb39f18782f793520caee8cb8846be06112"
228
+
229
+
[[package]]
230
+
name = "linux-raw-sys"
231
+
version = "0.11.0"
232
+
source = "registry+https://github.com/rust-lang/crates.io-index"
233
+
checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
234
+
235
+
[[package]]
236
+
name = "log"
237
+
version = "0.4.29"
238
+
source = "registry+https://github.com/rust-lang/crates.io-index"
239
+
checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
240
+
241
+
[[package]]
242
+
name = "memchr"
243
+
version = "2.8.0"
244
+
source = "registry+https://github.com/rust-lang/crates.io-index"
245
+
checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
246
+
247
+
[[package]]
248
+
name = "once_cell"
249
+
version = "1.21.3"
250
+
source = "registry+https://github.com/rust-lang/crates.io-index"
251
+
checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
252
+
253
+
[[package]]
254
+
name = "once_cell_polyfill"
255
+
version = "1.70.2"
256
+
source = "registry+https://github.com/rust-lang/crates.io-index"
257
+
checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
258
+
259
+
[[package]]
260
+
name = "prettyplease"
261
+
version = "0.2.37"
262
+
source = "registry+https://github.com/rust-lang/crates.io-index"
263
+
checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
264
+
dependencies = [
265
+
"proc-macro2",
266
+
"syn",
267
+
]
268
+
269
+
[[package]]
270
+
name = "proc-macro2"
271
+
version = "1.0.106"
272
+
source = "registry+https://github.com/rust-lang/crates.io-index"
273
+
checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
274
+
dependencies = [
275
+
"unicode-ident",
276
+
]
277
+
278
+
[[package]]
279
+
name = "quote"
280
+
version = "1.0.44"
281
+
source = "registry+https://github.com/rust-lang/crates.io-index"
282
+
checksum = "21b2ebcf727b7760c461f091f9f0f539b77b8e87f2fd88131e7f1b433b3cece4"
283
+
dependencies = [
284
+
"proc-macro2",
285
+
]
286
+
287
+
[[package]]
288
+
name = "r-efi"
289
+
version = "5.3.0"
290
+
source = "registry+https://github.com/rust-lang/crates.io-index"
291
+
checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
292
+
293
+
[[package]]
294
+
name = "rustix"
295
+
version = "1.1.3"
296
+
source = "registry+https://github.com/rust-lang/crates.io-index"
297
+
checksum = "146c9e247ccc180c1f61615433868c99f3de3ae256a30a43b49f67c2d9171f34"
298
+
dependencies = [
299
+
"bitflags",
300
+
"errno",
301
+
"libc",
302
+
"linux-raw-sys",
303
+
"windows-sys",
304
+
]
305
+
306
+
[[package]]
307
+
name = "semver"
308
+
version = "1.0.27"
309
+
source = "registry+https://github.com/rust-lang/crates.io-index"
310
+
checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
311
+
312
+
[[package]]
313
+
name = "serde"
314
+
version = "1.0.228"
315
+
source = "registry+https://github.com/rust-lang/crates.io-index"
316
+
checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
317
+
dependencies = [
318
+
"serde_core",
319
+
"serde_derive",
320
+
]
321
+
322
+
[[package]]
323
+
name = "serde_core"
324
+
version = "1.0.228"
325
+
source = "registry+https://github.com/rust-lang/crates.io-index"
326
+
checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
327
+
dependencies = [
328
+
"serde_derive",
329
+
]
330
+
331
+
[[package]]
332
+
name = "serde_derive"
333
+
version = "1.0.228"
334
+
source = "registry+https://github.com/rust-lang/crates.io-index"
335
+
checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
336
+
dependencies = [
337
+
"proc-macro2",
338
+
"quote",
339
+
"syn",
340
+
]
341
+
342
+
[[package]]
343
+
name = "serde_json"
344
+
version = "1.0.149"
345
+
source = "registry+https://github.com/rust-lang/crates.io-index"
346
+
checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
347
+
dependencies = [
348
+
"itoa",
349
+
"memchr",
350
+
"serde",
351
+
"serde_core",
352
+
"zmij",
353
+
]
354
+
355
+
[[package]]
356
+
name = "serde_spanned"
357
+
version = "1.0.4"
358
+
source = "registry+https://github.com/rust-lang/crates.io-index"
359
+
checksum = "f8bbf91e5a4d6315eee45e704372590b30e260ee83af6639d64557f51b067776"
360
+
dependencies = [
361
+
"serde_core",
362
+
]
363
+
364
+
[[package]]
365
+
name = "src-rust"
366
+
version = "0.1.0"
367
+
dependencies = [
368
+
"cbindgen",
369
+
]
370
+
371
+
[[package]]
372
+
name = "strsim"
373
+
version = "0.11.1"
374
+
source = "registry+https://github.com/rust-lang/crates.io-index"
375
+
checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
376
+
377
+
[[package]]
378
+
name = "syn"
379
+
version = "2.0.116"
380
+
source = "registry+https://github.com/rust-lang/crates.io-index"
381
+
checksum = "3df424c70518695237746f84cede799c9c58fcb37450d7b23716568cc8bc69cb"
382
+
dependencies = [
383
+
"proc-macro2",
384
+
"quote",
385
+
"unicode-ident",
386
+
]
387
+
388
+
[[package]]
389
+
name = "tempfile"
390
+
version = "3.25.0"
391
+
source = "registry+https://github.com/rust-lang/crates.io-index"
392
+
checksum = "0136791f7c95b1f6dd99f9cc786b91bb81c3800b639b3478e561ddb7be95e5f1"
393
+
dependencies = [
394
+
"fastrand",
395
+
"getrandom",
396
+
"once_cell",
397
+
"rustix",
398
+
"windows-sys",
399
+
]
400
+
401
+
[[package]]
402
+
name = "toml"
403
+
version = "0.9.12+spec-1.1.0"
404
+
source = "registry+https://github.com/rust-lang/crates.io-index"
405
+
checksum = "cf92845e79fc2e2def6a5d828f0801e29a2f8acc037becc5ab08595c7d5e9863"
406
+
dependencies = [
407
+
"indexmap",
408
+
"serde_core",
409
+
"serde_spanned",
410
+
"toml_datetime",
411
+
"toml_parser",
412
+
"toml_writer",
413
+
"winnow",
414
+
]
415
+
416
+
[[package]]
417
+
name = "toml_datetime"
418
+
version = "0.7.5+spec-1.1.0"
419
+
source = "registry+https://github.com/rust-lang/crates.io-index"
420
+
checksum = "92e1cfed4a3038bc5a127e35a2d360f145e1f4b971b551a2ba5fd7aedf7e1347"
421
+
dependencies = [
422
+
"serde_core",
423
+
]
424
+
425
+
[[package]]
426
+
name = "toml_parser"
427
+
version = "1.0.9+spec-1.1.0"
428
+
source = "registry+https://github.com/rust-lang/crates.io-index"
429
+
checksum = "702d4415e08923e7e1ef96cd5727c0dfed80b4d2fa25db9647fe5eb6f7c5a4c4"
430
+
dependencies = [
431
+
"winnow",
432
+
]
433
+
434
+
[[package]]
435
+
name = "toml_writer"
436
+
version = "1.0.6+spec-1.1.0"
437
+
source = "registry+https://github.com/rust-lang/crates.io-index"
438
+
checksum = "ab16f14aed21ee8bfd8ec22513f7287cd4a91aa92e44edfe2c17ddd004e92607"
439
+
440
+
[[package]]
441
+
name = "unicode-ident"
442
+
version = "1.0.24"
443
+
source = "registry+https://github.com/rust-lang/crates.io-index"
444
+
checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
445
+
446
+
[[package]]
447
+
name = "unicode-xid"
448
+
version = "0.2.6"
449
+
source = "registry+https://github.com/rust-lang/crates.io-index"
450
+
checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
451
+
452
+
[[package]]
453
+
name = "utf8parse"
454
+
version = "0.2.2"
455
+
source = "registry+https://github.com/rust-lang/crates.io-index"
456
+
checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
457
+
458
+
[[package]]
459
+
name = "wasip2"
460
+
version = "1.0.2+wasi-0.2.9"
461
+
source = "registry+https://github.com/rust-lang/crates.io-index"
462
+
checksum = "9517f9239f02c069db75e65f174b3da828fe5f5b945c4dd26bd25d89c03ebcf5"
463
+
dependencies = [
464
+
"wit-bindgen",
465
+
]
466
+
467
+
[[package]]
468
+
name = "wasip3"
469
+
version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
470
+
source = "registry+https://github.com/rust-lang/crates.io-index"
471
+
checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
472
+
dependencies = [
473
+
"wit-bindgen",
474
+
]
475
+
476
+
[[package]]
477
+
name = "wasm-encoder"
478
+
version = "0.244.0"
479
+
source = "registry+https://github.com/rust-lang/crates.io-index"
480
+
checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
481
+
dependencies = [
482
+
"leb128fmt",
483
+
"wasmparser",
484
+
]
485
+
486
+
[[package]]
487
+
name = "wasm-metadata"
488
+
version = "0.244.0"
489
+
source = "registry+https://github.com/rust-lang/crates.io-index"
490
+
checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
491
+
dependencies = [
492
+
"anyhow",
493
+
"indexmap",
494
+
"wasm-encoder",
495
+
"wasmparser",
496
+
]
497
+
498
+
[[package]]
499
+
name = "wasmparser"
500
+
version = "0.244.0"
501
+
source = "registry+https://github.com/rust-lang/crates.io-index"
502
+
checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
503
+
dependencies = [
504
+
"bitflags",
505
+
"hashbrown 0.15.5",
506
+
"indexmap",
507
+
"semver",
508
+
]
509
+
510
+
[[package]]
511
+
name = "windows-link"
512
+
version = "0.2.1"
513
+
source = "registry+https://github.com/rust-lang/crates.io-index"
514
+
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
515
+
516
+
[[package]]
517
+
name = "windows-sys"
518
+
version = "0.61.2"
519
+
source = "registry+https://github.com/rust-lang/crates.io-index"
520
+
checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
521
+
dependencies = [
522
+
"windows-link",
523
+
]
524
+
525
+
[[package]]
526
+
name = "winnow"
527
+
version = "0.7.14"
528
+
source = "registry+https://github.com/rust-lang/crates.io-index"
529
+
checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
530
+
531
+
[[package]]
532
+
name = "wit-bindgen"
533
+
version = "0.51.0"
534
+
source = "registry+https://github.com/rust-lang/crates.io-index"
535
+
checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
536
+
dependencies = [
537
+
"wit-bindgen-rust-macro",
538
+
]
539
+
540
+
[[package]]
541
+
name = "wit-bindgen-core"
542
+
version = "0.51.0"
543
+
source = "registry+https://github.com/rust-lang/crates.io-index"
544
+
checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
545
+
dependencies = [
546
+
"anyhow",
547
+
"heck",
548
+
"wit-parser",
549
+
]
550
+
551
+
[[package]]
552
+
name = "wit-bindgen-rust"
553
+
version = "0.51.0"
554
+
source = "registry+https://github.com/rust-lang/crates.io-index"
555
+
checksum = "b7c566e0f4b284dd6561c786d9cb0142da491f46a9fbed79ea69cdad5db17f21"
556
+
dependencies = [
557
+
"anyhow",
558
+
"heck",
559
+
"indexmap",
560
+
"prettyplease",
561
+
"syn",
562
+
"wasm-metadata",
563
+
"wit-bindgen-core",
564
+
"wit-component",
565
+
]
566
+
567
+
[[package]]
568
+
name = "wit-bindgen-rust-macro"
569
+
version = "0.51.0"
570
+
source = "registry+https://github.com/rust-lang/crates.io-index"
571
+
checksum = "0c0f9bfd77e6a48eccf51359e3ae77140a7f50b1e2ebfe62422d8afdaffab17a"
572
+
dependencies = [
573
+
"anyhow",
574
+
"prettyplease",
575
+
"proc-macro2",
576
+
"quote",
577
+
"syn",
578
+
"wit-bindgen-core",
579
+
"wit-bindgen-rust",
580
+
]
581
+
582
+
[[package]]
583
+
name = "wit-component"
584
+
version = "0.244.0"
585
+
source = "registry+https://github.com/rust-lang/crates.io-index"
586
+
checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
587
+
dependencies = [
588
+
"anyhow",
589
+
"bitflags",
590
+
"indexmap",
591
+
"log",
592
+
"serde",
593
+
"serde_derive",
594
+
"serde_json",
595
+
"wasm-encoder",
596
+
"wasm-metadata",
597
+
"wasmparser",
598
+
"wit-parser",
599
+
]
600
+
601
+
[[package]]
602
+
name = "wit-parser"
603
+
version = "0.244.0"
604
+
source = "registry+https://github.com/rust-lang/crates.io-index"
605
+
checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
606
+
dependencies = [
607
+
"anyhow",
608
+
"id-arena",
609
+
"indexmap",
610
+
"log",
611
+
"semver",
612
+
"serde",
613
+
"serde_derive",
614
+
"serde_json",
615
+
"unicode-xid",
616
+
"wasmparser",
617
+
]
618
+
619
+
[[package]]
620
+
name = "zmij"
621
+
version = "1.0.21"
622
+
source = "registry+https://github.com/rust-lang/crates.io-index"
623
+
checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+10
src-rust/Cargo.toml
+10
src-rust/Cargo.toml
+24
src-rust/build.rs
+24
src-rust/build.rs
···
1
+
fn main() {
2
+
let crate_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
3
+
let header_path = "bindings/jvm_interop.h";
4
+
cbindgen::Builder::new()
5
+
.with_crate(crate_dir.clone())
6
+
.with_language(cbindgen::Language::C)
7
+
.generate()
8
+
.expect("Unable to generate bindings")
9
+
.write_to_file(header_path);
10
+
strip_unneeded_includes(header_path);
11
+
}
12
+
13
+
fn strip_unneeded_includes(header_path: &str) {
14
+
// HACK: jextract generates incorrect code unless stdlib and stdarg are excluded
15
+
let contents = std::fs::read_to_string(header_path).expect("Unable to read generated header");
16
+
let filtered = contents
17
+
.lines()
18
+
.filter(|line| {
19
+
*line != "#include <stdlib.h>" && *line != "#include <stdarg.h>"
20
+
})
21
+
.collect::<Vec<_>>()
22
+
.join("\n");
23
+
std::fs::write(header_path, filtered).expect("Unable to write filtered header");
24
+
}
+38
src-rust/src/lib.rs
+38
src-rust/src/lib.rs
···
1
+
use std::ffi::c_int;
2
+
3
+
#[unsafe(no_mangle)] // FFI is always unsafe.
4
+
pub extern "C" fn add(left: u64, right: u64) -> u64 {
5
+
left + right
6
+
}
7
+
8
+
#[repr(C)]
9
+
pub struct ExternStruct {
10
+
x: c_int, // exposed structs should use C types from std::ffi
11
+
y: c_int,
12
+
}
13
+
14
+
// your code should provide a constructor method...
15
+
#[unsafe(no_mangle)]
16
+
pub extern "C" fn extern_struct_new(x: c_int, y: c_int) -> *mut ExternStruct {
17
+
let s = Box::new(ExternStruct { x, y });
18
+
Box::into_raw(s)
19
+
}
20
+
21
+
// ...as well as a destructor.
22
+
#[unsafe(no_mangle)]
23
+
pub extern "C" fn extern_struct_free(s: *mut ExternStruct) {
24
+
if !s.is_null() {
25
+
unsafe { drop(Box::from_raw(s)) }; // KABOOM!
26
+
}
27
+
}
28
+
29
+
#[cfg(test)]
30
+
mod tests {
31
+
use super::*;
32
+
33
+
#[test]
34
+
fn it_works() {
35
+
let result = add(2, 2);
36
+
assert_eq!(result, 4);
37
+
}
38
+
}
+1
src-rust/target/.rustc_info.json
+1
src-rust/target/.rustc_info.json
···
1
+
{"rustc_fingerprint":7833272153447333061,"outputs":{"17747080675513052775":{"success":true,"status":"","code":0,"stdout":"rustc 1.93.0 (254b59607 2026-01-19)\nbinary: rustc\ncommit-hash: 254b59607d4417e9dffbc307138ae5c86280fe4c\ncommit-date: 2026-01-19\nhost: x86_64-unknown-linux-gnu\nrelease: 1.93.0\nLLVM version: 21.1.8\n","stderr":""},"7971740275564407648":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/nix/store/2w8pppicnsddp3n61ar96cnv3r6iyrdh-rust-mixed\noff\npacked\nunpacked\n___\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_abi=\"\"\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n","stderr":""},"11857020428658561806":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/nix/store/2w8pppicnsddp3n61ar96cnv3r6iyrdh-rust-mixed\noff\npacked\nunpacked\n___\ndebug_assertions\nemscripten_wasm_eh\nfmt_debug=\"full\"\noverflow_checks\npanic=\"unwind\"\nproc_macro\nrelocation_model=\"pic\"\ntarget_abi=\"\"\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"x87\"\ntarget_has_atomic\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_has_atomic_equal_alignment=\"16\"\ntarget_has_atomic_equal_alignment=\"32\"\ntarget_has_atomic_equal_alignment=\"64\"\ntarget_has_atomic_equal_alignment=\"8\"\ntarget_has_atomic_equal_alignment=\"ptr\"\ntarget_has_atomic_load_store\ntarget_has_atomic_load_store=\"16\"\ntarget_has_atomic_load_store=\"32\"\ntarget_has_atomic_load_store=\"64\"\ntarget_has_atomic_load_store=\"8\"\ntarget_has_atomic_load_store=\"ptr\"\ntarget_has_reliable_f128\ntarget_has_reliable_f16\ntarget_has_reliable_f16_math\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_thread_local\ntarget_vendor=\"unknown\"\nub_checks\nunix\n","stderr":""}},"successes":{}}
+3
src-rust/target/CACHEDIR.TAG
+3
src-rust/target/CACHEDIR.TAG
src-rust/target/debug/.cargo-lock
src-rust/target/debug/.cargo-lock
This is a binary file and will not be displayed.