project restructured

.gitignore

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+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# =========================
+# Operating System Files
+# =========================
+
+# OSX
+# =========================
+
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Java class files
+*.class
+*.jar
+/out/
+core/.idea/workspace.xml
+/.idea/
+target
+hs_err_pid*.log

geodesk.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_17">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Maven: org.eclipse.collections:eclipse-collections:9.0.0" level="project" />
+    <orderEntry type="library" name="Maven: org.eclipse.collections:eclipse-collections-api:9.0.0" level="project" />
+    <orderEntry type="library" name="Maven: org.locationtech.jts:jts-core:1.18.2" level="project" />
+    <orderEntry type="library" name="Maven: org.ow2.asm:asm:9.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.logging.log4j:log4j-api:2.11.1" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.logging.log4j:log4j-core:2.11.1" level="project" />
+  </component>
+</module>

pom.xml

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+<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>
+
+  <groupId>com.geodesk</groupId>
+  <artifactId>geodesk</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>GeoDesk</name>
+  <url>http://www.geodesk.com</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>17</maven.compiler.source>
+    <maven.compiler.target>17</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+
+  	<!-- primitive collections -->
+  	<dependency>
+		<groupId>org.eclipse.collections</groupId>
+  		<artifactId>eclipse-collections</artifactId>
+  		<version>9.0.0</version>
+	</dependency>
+
+	<!-- geometry -->
+	<dependency>
+    	<groupId>org.locationtech.jts</groupId>
+    	<artifactId>jts-core</artifactId>
+    	<version>1.18.2</version>
+	</dependency>
+
+	  <!-- Java Bytecode Manipulation -->
+	  <dependency>
+		  <groupId>org.ow2.asm</groupId>
+		  <artifactId>asm</artifactId>
+		  <version>9.0</version>
+	  </dependency>
+
+    <!-- Testing -->
+    <dependency>
+      	<groupId>junit</groupId>
+      	<artifactId>junit</artifactId>
+      	<version>4.12</version>
+      	<scope>test</scope>
+    </dependency>
+
+	  <!-- Logging (temporary) -->
+	  <dependency>
+		  <groupId>org.apache.logging.log4j</groupId>
+		  <artifactId>log4j-api</artifactId>
+		  <version>2.11.1</version>
+	  </dependency>
+	  <dependency>
+		  <groupId>org.apache.logging.log4j</groupId>
+		  <artifactId>log4j-core</artifactId>
+		  <version>2.11.1</version>
+	  </dependency>
+
+
+  </dependencies>
+
+  <build>
+  	<plugins>
+
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+			<configuration>
+				<source>17</source>
+				<target>17</target>
+			</configuration>
+        </plugin>
+
+		<plugin>
+			<groupId>org.apache.maven.plugins</groupId>
+			<artifactId>maven-site-plugin</artifactId>
+			<version>3.7.1</version>
+		</plugin>
+
+
+    </plugins>
+</build>
+
+<reporting>
+	<plugins>
+		<plugin>
+			<groupId>org.apache.maven.plugins</groupId>
+			<artifactId>maven-javadoc-plugin</artifactId>
+			<version>3.3.1</version>
+
+			<configuration>
+				<doctitle>GeoDesk (Preview Release)</doctitle>
+				<windowtitle>GeoDesk (Preview Release)</windowtitle>
+				<excludePackageNames>
+					benchmarks;
+					com.clarisma.*;
+					com.geodesk.benchmark;
+					com.geodesk.examples;
+					com.geodesk.feature.*;
+					com.geodesk.gol;
+					com.geodesk.gol.*;
+					com.geodesk.geom;
+					com.geodesk.geom.*;
+					com.geodesk.io.*;
+					com.geodesk.map;
+				</excludePackageNames>
+				<links>
+					<link>https://locationtech.github.io/jts/javadoc/</link>
+				</links>
+			</configuration>
+
+			<!--
+			<configuration>
+				<doclet>fr.faylixe.marklet.Marklet</doclet>
+				<docletArtifact>
+					<groupId>fr.faylixe</groupId>
+					<artifactId>marklet</artifactId>
+					<version>1.1.0</version>
+				</docletArtifact>
+				<reportOutputDirectory>./</reportOutputDirectory>
+				<destDir>./</destDir>
+				<useStandardDocletOptions>false</useStandardDocletOptions>
+			</configuration>
+
+			<configuration>
+				<doclet>ch.raffael.mddoclet.MarkdownDoclet</doclet>
+				<docletArtifact>
+					<groupId>ch.raffael.markdown-doclet</groupId>
+					<artifactId>markdown-doclet</artifactId>
+					<version>1.4</version>
+				</docletArtifact>
+				<useStandardDocletOptions>true</useStandardDocletOptions>
+			</configuration>
+			-->
+		</plugin>
+	</plugins>
+</reporting>
+
+</project>

src/main/java/com/clarisma/common/ast/Ast.java

@@ -0,0 +1,6 @@
+package com.clarisma.common.ast;
+
+public abstract class Ast
+{
+	public abstract <R> R accept(AstVisitor<R> visitor); 
+}

src/main/java/com/clarisma/common/ast/AstVisitor.java

@@ -0,0 +1,13 @@
+package com.clarisma.common.ast;
+
+public interface AstVisitor<R>
+{
+	R visitExpression(Expression exp);
+	R visitBinary(BinaryExpression exp);
+	R visitUnary(UnaryExpression exp);
+	R visitString(StringExpression exp);
+	R visitLiteral(Literal exp);
+	R visitVariable(Variable exp);
+	R visitCall(CallExpression exp);
+	R visitConditional(ConditionalExpression exp);
+}

src/main/java/com/clarisma/common/ast/BinaryExpression.java

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+package com.clarisma.common.ast;
+
+import java.util.Objects;
+
+public class BinaryExpression extends Expression
+{
+	private final Operator operator;
+	private final Expression left;
+	private final Expression right;
+
+	public BinaryExpression(Operator operator, Expression left, Expression right)
+	{
+		this.operator = operator;
+		this.left = left;
+		this.right = right;
+	}
+
+	@Override public boolean equals(Object o)
+	{
+		if (this == o) return true;
+		if (o == null || getClass() != o.getClass()) return false;
+		BinaryExpression that = (BinaryExpression) o;
+		return Objects.equals(operator, that.operator) && Objects.equals(left,
+			that.left) && Objects.equals(right, that.right);
+	}
+
+	/*
+	@Override public Object clone()
+	{
+		BinaryExpression v = (BinaryExpression)super.clone();
+		v.left = (Expression)left.clone();
+		v.right = (Expression)right.clone();
+		return v;
+	}
+	 */
+
+	@Override public int hashCode()
+	{
+		return Objects.hash(operator, left, right);
+	}
+
+	public Operator operator()
+	{
+		return operator;
+	}
+
+	public Expression left()
+	{
+		return left;
+	}
+
+	public Expression right()
+	{
+		return right;
+	}
+
+	@Override public <R> R accept(AstVisitor<R> visitor)
+	{
+		return visitor.visitBinary(this);
+	}
+}

src/main/java/com/clarisma/common/ast/CallExpression.java

@@ -0,0 +1,20 @@
+package com.clarisma.common.ast;
+
+public class CallExpression extends Expression
+{
+	private final Expression callee;
+	private final Expression[] arguments;
+
+
+	public CallExpression(Expression callee, Expression[] arguments)
+	{
+		this.callee = callee;
+		this.arguments = arguments;
+	}
+
+
+	@Override public <R> R accept(AstVisitor<R> visitor)
+	{
+		return visitor.visitCall(this);
+	}
+}

src/main/java/com/clarisma/common/ast/ConditionalExpression.java

@@ -0,0 +1,35 @@
+package com.clarisma.common.ast;
+
+public class ConditionalExpression extends Expression
+{
+	private final Expression condition;
+	private final Expression ifTrue;
+	private final Expression ifFalse;
+
+	public ConditionalExpression(Expression condition, Expression ifTrue, Expression ifFalse)
+	{
+		this.condition = condition;
+		this.ifTrue = ifTrue;
+		this.ifFalse = ifFalse;
+	}
+
+	public Expression condition()
+	{
+		return condition;
+	}
+
+	public Expression ifTrue()
+	{
+		return ifTrue;
+	}
+
+	public Expression ifFalse()
+	{
+		return ifFalse;
+	}
+
+	@Override public <R> R accept(AstVisitor<R> visitor)
+	{
+		return visitor.visitConditional(this);
+	}
+}

src/main/java/com/clarisma/common/ast/Expression.java

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+package com.clarisma.common.ast;
+
+public abstract class Expression extends Ast
+{
+    /*
+    @Override public Object clone()
+    {
+        try
+        {
+            return super.clone();
+        }
+        catch(CloneNotSupportedException ex)
+        {
+            throw new RuntimeException();
+        }
+    }
+     */
+
+    // TODO: why is accept() not implemented here?
+}