Merge branch 'topic/declarative_builtins' into 'master'

Implement a built-in registration system akin to TruffleRuby's

See merge request eng/libadalang/langkit-query-language!379

lkql_jit/builtins_annotations/pom.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <artifactId>lkql_jit</artifactId>
+        <groupId>com.adacore</groupId>
+        <version>0.1.0</version>
+    </parent>
+
+    <artifactId>builtins_annotations</artifactId>
+    <version>0.1.0</version>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.graalvm.truffle</groupId>
+            <artifactId>truffle-api</artifactId>
+            <version>${graalvm.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.graalvm.truffle</groupId>
+            <artifactId>truffle-dsl-processor</artifactId>
+            <version>${graalvm.version}</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <!-- Skip the Spotless check because everything is handled by the parent -->
+            <plugin>
+                <groupId>com.diffplug.spotless</groupId>
+                <artifactId>spotless-maven-plugin</artifactId>
+                <version>2.40.0</version>
+                <configuration>
+                    <skip>true</skip>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <compilerArgs>
+                        <arg>--add-exports</arg>
+                        <arg>org.graalvm.truffle/com.oracle.truffle.api.dsl=ALL-UNNAMED</arg>
+                        <compilerArgument>-proc:none</compilerArgument>
+                    </compilerArgs>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

lkql_jit/builtins_annotations/src/main/java/com/adacore/lkql_jit/annotations/BuiltInFunction.java

@@ -0,0 +1,23 @@
+//
+//  Copyright (C) 2005-2024, AdaCore
+//  SPDX-License-Identifier: GPL-3.0-or-later
+//
+
+package com.adacore.lkql_jit.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Target;
+
+/**
+ * Annotation to add a new built-in function to LKQL. Those annotations are automatically processed
+ * by the BuiltInProcessor Java processor.
+ */
+@Target(ElementType.TYPE)
+public @interface BuiltInFunction {
+
+    /** Name for this built-in function */
+    String name();
+
+    /** Documentation for this built-in function */
+    String doc();
+}

lkql_jit/builtins_annotations/src/main/java/com/adacore/lkql_jit/annotations/BuiltInMethod.java

@@ -0,0 +1,34 @@
+//
+//  Copyright (C) 2005-2024, AdaCore
+//  SPDX-License-Identifier: GPL-3.0-or-later
+//
+
+package com.adacore.lkql_jit.annotations;
+
+import java.lang.annotation.*;
+
+/**
+ * Annotation to add a new built-in method to LKQL. Those annotations are automatically processed by
+ * the BuiltInProcessor Java processor.
+ */
+@Target(ElementType.TYPE)
+public @interface BuiltInMethod {
+
+    /** Name for this built-in method. */
+    String name() default "";
+
+    /** Documentation for this built-in method. */
+    String doc() default "";
+
+    /**
+     * Types that this method should be added onto. Note that if the final computed set is empty,
+     * method will be added on all types.
+     */
+    String[] targetTypes() default {};
+
+    /**
+     * Whether method is a property. A property is a built-in method that doesn't need any
+     * arguments, and that doesn't take parens when you call it.
+     */
+    boolean isProperty() default false;
+}