First attempt to compile with TeaVM

Author: konsoletyper

.gitignore

@@ -27,4 +27,7 @@ debug.sh
 core/TODO*.txt
 srtmprovider/
 core/docs/
-.*#
+.*#
+.project
+.settings
+.classpath

core/src/main/java/com/graphhopper/util/Helper.java

@@ -392,10 +392,8 @@ public Object run() throws Exception
 
     public static String nf( long no )
     {
-        // I like french localization the most: 123654 will be 123 654 instead
-        // of comma vs. point confusion for english/german guys.
-        // NumberFormat is not thread safe => but getInstance looks like it's cached
-        return NumberFormat.getInstance(Locale.FRANCE).format(no);
+        // Simplify for TeaVM. May be implement Locale and NumberFormat someday.
+        return String.valueOf(no);
     }
 
     public static String firstBig( String sayText )

graphhopper-teavm/pom.xml

@@ -0,0 +1,50 @@
+<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>
+    <groupId>com.graphhopper</groupId>
+    <artifactId>graphhopper-parent</artifactId>
+    <version>0.3-SNAPSHOT</version>
+  </parent>
+  <artifactId>graphhopper-teavm</artifactId>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.graphhopper</groupId>
+      <artifactId>graphhopper</artifactId>
+      <version>0.3-SNAPSHOT</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.teavm</groupId>
+        <artifactId>teavm-maven-plugin</artifactId>
+        <version>0.2-SNAPSHOT</version>
+        <dependencies>
+          <dependency>
+            <groupId>org.teavm</groupId>
+            <artifactId>teavm-classlib</artifactId>
+            <version>0.2-SNAPSHOT</version>
+          </dependency>
+        </dependencies>
+        <executions>
+          <execution>
+            <id>generate-javascript</id>
+            <goals>
+              <goal>build-javascript</goal>
+            </goals>
+            <phase>process-classes</phase>
+            <configuration>
+              <minifying>true</minifying>
+              <mainClass>com.graphhopper.teavm.Main</mainClass>
+              <mainPageIncluded>true</mainPageIncluded>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

graphhopper-teavm/src/main/java/com/graphhopper/teavm/InMemoryDirectory.java

@@ -0,0 +1,45 @@
+package com.graphhopper.teavm;
+
+import java.nio.ByteOrder;
+import com.graphhopper.storage.DAType;
+import com.graphhopper.storage.DataAccess;
+import com.graphhopper.storage.Directory;
+
+/**
+ *
+ * @author Alexey Andreev <[email protected]>
+ */
+public class InMemoryDirectory implements Directory {
+    @Override
+    public String getLocation() {
+        return null;
+    }
+
+    @Override
+    public ByteOrder getByteOrder() {
+        return null;
+    }
+
+    @Override
+    public DataAccess find(String name) {
+        return null;
+    }
+
+    @Override
+    public DataAccess find(String name, DAType type) {
+        return null;
+    }
+
+    @Override
+    public void clear() {
+    }
+
+    @Override
+    public void remove(DataAccess da) {
+    }
+
+    @Override
+    public DAType getDefaultType() {
+        return null;
+    }
+}

graphhopper-teavm/src/main/java/com/graphhopper/teavm/Main.java

@@ -0,0 +1,24 @@
+package com.graphhopper.teavm;
+
+import com.graphhopper.routing.DijkstraBidirection;
+import com.graphhopper.routing.util.*;
+import com.graphhopper.storage.GraphHopperStorage;
+
+/**
+ *
+ * @author Alexey Andreev <[email protected]>
+ */
+public class Main {
+    public static void main(String[] args) {
+        InMemoryDirectory directory = new InMemoryDirectory();
+        GraphHopperStorage graph = new GraphHopperStorage(directory, new EncodingManager(EncodingManager.BIKE), false);
+        graph.loadExisting();
+
+        EncodingManager encodingManager = graph.getEncodingManager();
+        FlagEncoder encoder = encodingManager.getSingle();
+
+        Weighting weighting = new FastestWeighting(encoder);
+        DijkstraBidirection algo = new DijkstraBidirection(graph, encoder, weighting);
+        algo.calcPath(0, 1);
+    }
+}

pom.xml

@@ -77,7 +77,8 @@
         <module>core</module>
         <module>tools</module>
         <module>web</module>
-        <module>android</module>
+        <!-- <module>android</module>  -->
+        <module>graphhopper-teavm</module>
     </modules>
 
     <build>