http://www.eclipse.org/jdt: Java Development Tools Core (Eclipse Foundation) 
Copyright (c) 2000, 2016 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation

/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.eval;

import java.util.Locale;
import java.util.Map;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.CompletionRequestor;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.WorkingCopyOwner;
import org.eclipse.jdt.core.compiler.*;
import org.eclipse.jdt.internal.codeassist.CompletionEngine;
import org.eclipse.jdt.internal.codeassist.ISelectionRequestor;
import org.eclipse.jdt.internal.codeassist.SelectionEngine;
import org.eclipse.jdt.internal.compiler.ClassFile;
import org.eclipse.jdt.internal.compiler.IProblemFactory;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
import org.eclipse.jdt.internal.compiler.env.IBinaryType;
import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
import org.eclipse.jdt.internal.compiler.problem.ProblemSeverities;
import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
import org.eclipse.jdt.internal.core.SearchableEnvironment;
import org.eclipse.jdt.internal.core.util.Util;


See Also:
  • IEvaluationContext
/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 */
public class EvaluationContext implements EvaluationConstants, SuffixConstants {
	
Global counters so that several evaluation context can deploy on the same runtime.

/**
	 * Global counters so that several evaluation context can deploy on the same runtime.
	 */
	static int VAR_CLASS_COUNTER = 0;
	static int CODE_SNIPPET_COUNTER = 0;

	GlobalVariable[] variables;
	int variableCount;
	char[][] imports;
	char[] packageName;
	boolean varsChanged;
	VariablesInfo installedVars;
	IBinaryType codeSnippetBinary;
	String lineSeparator;

	/* do names implicitly refer to a given type */
	char[] declaringTypeName;
	int[] localVariableModifiers;
	char[][] localVariableTypeNames;
	char[][] localVariableNames;

	/* can 'this' be used in this context */
	boolean isStatic;
	boolean isConstructorCall;

Creates a new evaluation context.

/**
 * Creates a new evaluation context.
 */
public EvaluationContext() {
	this.variables = new GlobalVariable[5];
	this.variableCount = 0;
	this.imports = CharOperation.NO_CHAR_CHAR;
	this.packageName = CharOperation.NO_CHAR;
	this.varsChanged = true;
	this.isStatic = true;
	this.isConstructorCall = false;
	this.lineSeparator = org.eclipse.jdt.internal.compiler.util.Util.LINE_SEPARATOR; // default value
}

Returns the global variables of this evaluation context in the order they were created in.

/**
 * Returns the global variables of this evaluation context in the order they were created in.
 */
public GlobalVariable[] allVariables() {
	GlobalVariable[] result = new GlobalVariable[this.variableCount];
	System.arraycopy(this.variables, 0, result, 0, this.variableCount);
	return result;
}

Computes a completion at the specified position of the given code snippet.
(Note that this evaluation context's VM doesn't need to be running.)
 @param environment
     used to resolve type/package references and search for types/packages
     based on partial names.
 @param requestor
     since the engine might produce answers of various forms, the engine
     is associated with a requestor able to accept all possible completions.
 @param options
	set of options used to configure the code assist engine.
 @param owner
 	the owner of working copies that take precedence over their original compilation units
 
 @param monitor
 	the progress monitor used to report progress

/**
 * Computes a completion at the specified position of the given code snippet.
 * (Note that this evaluation context's VM doesn't need to be running.)
 *
 *  @param environment
 *      used to resolve type/package references and search for types/packages
 *      based on partial names.
 *
 *  @param requestor
 *      since the engine might produce answers of various forms, the engine
 *      is associated with a requestor able to accept all possible completions.
 *
 *  @param options
 *		set of options used to configure the code assist engine.
 *
 *  @param owner
 *  	the owner of working copies that take precedence over their original compilation units
 *  
 *  @param monitor
 *  	the progress monitor used to report progress
 */
public void complete(
		char[] codeSnippet,
		int completionPosition,
		SearchableEnvironment environment,
		CompletionRequestor requestor,
		Map<String, String> options,
		final IJavaProject project,
		WorkingCopyOwner owner,
		IProgressMonitor monitor) {
	try {
		IRequestor variableRequestor = new IRequestor() {
			@Override
			public boolean acceptClassFiles(ClassFile[] classFiles, char[] codeSnippetClassName) {
				// Do nothing
				return true;
			}
			@Override
			public void acceptProblem(CategorizedProblem problem, char[] fragmentSource, int fragmentKind) {
				// Do nothing
			}
		};
		evaluateVariables(environment, options, variableRequestor, new DefaultProblemFactory(Locale.getDefault()));
	} catch (InstallException e) {
		// Do nothing
	}
	final char[] className = "CodeSnippetCompletion".toCharArray(); //$NON-NLS-1$
	final long complianceVersion = CompilerOptions.versionToJdkLevel(options.get(JavaCore.COMPILER_COMPLIANCE));
	final CodeSnippetToCuMapper mapper = new CodeSnippetToCuMapper(
		codeSnippet,
		this.packageName,
		this.imports,
		className,
		this.installedVars == null ? null : this.installedVars.className,
		this.localVariableNames,
		this.localVariableTypeNames,
		this.localVariableModifiers,
		this.declaringTypeName,
		this.lineSeparator,
		complianceVersion
	);
	ICompilationUnit sourceUnit = new ICompilationUnit() {
		@Override
		public char[] getFileName() {
			return CharOperation.concat(className, Util.defaultJavaExtension().toCharArray());
		}
		@Override
		public char[] getContents() {
			return mapper.getCUSource(EvaluationContext.this.lineSeparator);
		}
		@Override
		public char[] getMainTypeName() {
			return className;
		}
		@Override
		public char[][] getPackageName() {
			return null;
		}
		@Override
		public boolean ignoreOptionalProblems() {
			return false;
		}
		@Override
		public char[] getModuleName() {
			// TODO Java 9 Auto-generated method stub
			return null;
		}
	};

	CompletionEngine engine = new CompletionEngine(environment, mapper.getCompletionRequestor(requestor), options, project, owner, monitor);

	if (this.installedVars != null) {
		IBinaryType binaryType = getRootCodeSnippetBinary();
		if (binaryType != null) {
			engine.lookupEnvironment.cacheBinaryType(binaryType, null /*no access restriction*/);
		}

		ClassFile[] classFiles = this.installedVars.classFiles;
		for (int i = 0; i < classFiles.length; i++) {
			ClassFile classFile = classFiles[i];
			IBinaryType binary = null;
			try {
				binary = new ClassFileReader(classFile.getBytes(), null);
			} catch (ClassFormatException e) {
				e.printStackTrace(); // Should never happen since we compiled this type
			}
			engine.lookupEnvironment.cacheBinaryType(binary, null /*no access restriction*/);
		}
	}

	engine.complete(sourceUnit, mapper.startPosOffset + completionPosition, mapper.startPosOffset, null/*extended context isn't computed*/);
}

Deletes the given variable from this evaluation context. This will take effect in the target VM only
the next time global variables are installed.

/**
 * Deletes the given variable from this evaluation context. This will take effect in the target VM only
 * the next time global variables are installed.
 */
public void deleteVariable(GlobalVariable variable) {
	GlobalVariable[] vars = this.variables;
	int index = -1;
	for (int i = 0; i < this.variableCount; i++) {
		if (vars[i].equals(variable)) {
			index = i;
			break;
		}
	}
	if (index == -1) {
		return;
	}
	int elementCount = this.variableCount--;
	int j = elementCount - index - 1;
	if (j > 0) {
	    System.arraycopy(vars, index + 1, vars, index, j);
	}
	vars[elementCount - 1] = null;
	this.varsChanged = true;
}
private void deployCodeSnippetClassIfNeeded(IRequestor requestor) throws InstallException {
	if (this.codeSnippetBinary == null) {
		// Deploy CodeSnippet class (only once)
		if (!requestor.acceptClassFiles(
			new ClassFile[] {
				new ClassFile() {
					@Override
					public byte[] getBytes() {
						return getCodeSnippetBytes();
					}
					@Override
					public char[][] getCompoundName() {
						return EvaluationConstants.ROOT_COMPOUND_NAME;
					}
				}
			},
			null))
				throw new InstallException();
	}
}

Throws:
See Also:
  • IEvaluationContext
/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 * @exception org.eclipse.jdt.internal.eval.InstallException if the code snippet class files could not be deployed.
 */
public void evaluate(
	char[] codeSnippet,
	char[][] contextLocalVariableTypeNames,
	char[][] contextLocalVariableNames,
	int[] contextLocalVariableModifiers,
	char[] contextDeclaringTypeName,
	boolean contextIsStatic,
	boolean contextIsConstructorCall,
	INameEnvironment environment,
	Map<String, String> options,
	final IRequestor requestor,
	IProblemFactory problemFactory) throws InstallException {

	// Initialialize context
	this.localVariableTypeNames = contextLocalVariableTypeNames;
	this.localVariableNames = contextLocalVariableNames;
	this.localVariableModifiers = contextLocalVariableModifiers;
	this.declaringTypeName = contextDeclaringTypeName;
	this.isStatic = contextIsStatic;
	this.isConstructorCall = contextIsConstructorCall;

	deployCodeSnippetClassIfNeeded(requestor);

	try {
		// Install new variables if needed
		class ForwardingRequestor implements IRequestor {
			boolean hasErrors = false;
			@Override
			public boolean acceptClassFiles(ClassFile[] classFiles, char[] codeSnippetClassName) {
				return requestor.acceptClassFiles(classFiles, codeSnippetClassName);
			}
			@Override
			public void acceptProblem(CategorizedProblem problem, char[] fragmentSource, int fragmentKind) {
				requestor.acceptProblem(problem, fragmentSource, fragmentKind);
				if (problem.isError()) {
					this.hasErrors = true;
				}
			}
		}
		ForwardingRequestor forwardingRequestor = new ForwardingRequestor();
		if (this.varsChanged) {
			evaluateVariables(environment, options, forwardingRequestor, problemFactory);
		}

		// Compile code snippet if there was no errors while evaluating the variables
		if (!forwardingRequestor.hasErrors) {
			Evaluator evaluator =
				new CodeSnippetEvaluator(
					codeSnippet,
					this,
					environment,
					options,
					requestor,
					problemFactory);
			ClassFile[] classes = evaluator.getClasses();
			// Send code snippet on target
			if (classes != null && classes.length > 0) {
				char[] simpleClassName = evaluator.getClassName();
				char[] pkgName = getPackageName();
				char[] qualifiedClassName =
					pkgName.length == 0 ?
						simpleClassName :
						CharOperation.concat(pkgName, simpleClassName, '.');
				CODE_SNIPPET_COUNTER++;
				if (!requestor.acceptClassFiles(classes, qualifiedClassName))
					throw new InstallException();
			}
		}
	} finally {
		// Reinitialize context to default values
		this.localVariableTypeNames = null;
		this.localVariableNames = null;
		this.localVariableModifiers = null;
		this.declaringTypeName = null;
		this.isStatic = true;
		this.isConstructorCall = false;
	}
}

Throws:
See Also:
  • IEvaluationContext
/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 * @exception org.eclipse.jdt.internal.eval.InstallException if the code snippet class files could not be deployed.
 */
public void evaluate(char[] codeSnippet, INameEnvironment environment, Map<String, String> options, final IRequestor requestor, IProblemFactory problemFactory) throws InstallException {
	this.evaluate(
		codeSnippet,
		null,
		null,
		null,
		null,
		true,
		false,
		environment,
		options,
		requestor,
		problemFactory);
}

See Also:
  • IEvaluationContext
/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 */
public void evaluateImports(INameEnvironment environment, IRequestor requestor, IProblemFactory problemFactory) {
	for (int i = 0; i < this.imports.length; i++) {
		CategorizedProblem[] problems = new CategorizedProblem[] {null};
		char[] importDeclaration = this.imports[i];
		char[][] splitDeclaration = CharOperation.splitOn('.', importDeclaration);
		int splitLength = splitDeclaration.length;
		if (splitLength > 0) {
			char[] pkgName = splitDeclaration[splitLength - 1];
			if (pkgName.length == 1 && pkgName[0] == '*') {
				char[][] parentName;
				switch (splitLength) {
					case 1:
						parentName = null;
						break;
					case 2:
						parentName = null;
						pkgName = splitDeclaration[splitLength - 2];
						break;
					default:
						parentName = CharOperation.subarray(splitDeclaration, 0, splitLength - 2);
						pkgName = splitDeclaration[splitLength - 2];
				}
				if (!environment.isPackage(parentName, pkgName)) {
					String[] arguments = new String[] {new String(importDeclaration)};
					problems[0] = problemFactory.createProblem(importDeclaration, IProblem.ImportNotFound, arguments, arguments, ProblemSeverities.Warning, 0, importDeclaration.length - 1, i, 0);
				}
			} else {
				if (environment.findType(splitDeclaration) == null) {
					String[] arguments = new String[] {new String(importDeclaration)};
					problems[0] = problemFactory.createProblem(importDeclaration, IProblem.ImportNotFound, arguments, arguments, ProblemSeverities.Warning, 0, importDeclaration.length - 1, i, 0);
				}
			}
		} else {
			String[] arguments = new String[] {new String(importDeclaration)};
			problems[0] = problemFactory.createProblem(importDeclaration, IProblem.ImportNotFound, arguments, arguments, ProblemSeverities.Warning, 0, importDeclaration.length - 1, i, 0);
		}
		if (problems[0] != null) {
			requestor.acceptProblem(problems[0], importDeclaration, EvaluationResult.T_IMPORT);
		}
	}
}

Throws:
See Also:
  • IEvaluationContext
/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 * @exception org.eclipse.jdt.internal.eval.InstallException if the code snippet class files could not be deployed.
 * @exception java.lang.IllegalArgumentException if the global has not been installed yet.
 */
public void evaluateVariable(GlobalVariable variable, INameEnvironment environment, Map<String, String> options, IRequestor requestor, IProblemFactory problemFactory) throws InstallException {
	this.evaluate(variable.getName(), environment, options, requestor, problemFactory);
}

Throws:
See Also:
  • IEvaluationContext
/**
 * @see org.eclipse.jdt.core.eval.IEvaluationContext
 * @exception org.eclipse.jdt.internal.eval.InstallException if the code snippet class files could not be deployed.
 */
public void evaluateVariables(INameEnvironment environment, Map<String, String> options, IRequestor requestor, IProblemFactory problemFactory) throws InstallException {
	deployCodeSnippetClassIfNeeded(requestor);
	VariablesEvaluator evaluator = new VariablesEvaluator(this, environment, options, requestor, problemFactory);
	ClassFile[] classes = evaluator.getClasses();
	if (classes != null) {
		if (classes.length > 0) {
			// Sort classes so that enclosing types are cached before nested types
			// otherwise an AbortCompilation is thrown in 1.5 mode since the enclosing type
			// is needed to resolve a nested type
			Util.sort(classes, new Util.Comparer() {
				@Override
				public int compare(Object a, Object b) {
					if (a == b) return 0;
					ClassFile enclosing = ((ClassFile) a).enclosingClassFile;
					while (enclosing != null) {
						if (enclosing == b)
							return 1;
						enclosing = enclosing.enclosingClassFile;
					}
					return -1;
				}
			});

			// Send classes
			if (!requestor.acceptClassFiles(classes, null)) {
				throw new InstallException();
			}

			// Remember that the variables have been installed
			int count = this.variableCount;
			GlobalVariable[] variablesCopy = new GlobalVariable[count];
			System.arraycopy(this.variables, 0, variablesCopy, 0, count);
			this.installedVars = new VariablesInfo(evaluator.getPackageName(), evaluator.getClassName(), classes, variablesCopy, count);
			VAR_CLASS_COUNTER++;
		}
		this.varsChanged = false;
	}
}

Returns the bytes of the CodeSnippet class.
Generated using the following code snippet:
[java.io.BufferedWriter writer = new java.io.BufferedWriter(new java.io.FileWriter("d:/temp/CodeSnippet.java"));
writer.write(org.eclipse.jdt.internal.eval.EvaluationContext.getCodeSnippetSource());
writer.close();
org.eclipse.jdt.internal.compiler.batch.Main.compile(
"d:/temp/CodeSnippet.java -d d:/temp -classpath d:/jdk1.2.2/jre/lib/rt.jar -verbose");
java.io.FileInputStream reader =  new java.io.FileInputStream("d:/temp/org/eclipse/jdt/internal/eval/target/CodeSnippet.class");
byte[] bytes = org.eclipse.jdt.internal.core.Util.readContentsAsBytes(reader);
reader.close();
StringBuffer buffer = new StringBuffer();
buffer.append("private byte[] getCodeSnippetBytes() {\n");
buffer.append("	return new byte[] {\n");
buffer.append("		");
for (int i = 0; i < bytes.length; i++) {
buffer.append(bytes[i]);
if (i == bytes.length - 1) {
buffer.append("\n");
} else {
buffer.append(", ");
}
}
buffer.append("	};\n");
buffer.append("}");
buffer.toString()
]

/**
 * Returns the bytes of the CodeSnippet class.
 * Generated using the following code snippet:
[java.io.BufferedWriter writer = new java.io.BufferedWriter(new java.io.FileWriter("d:/temp/CodeSnippet.java"));
writer.write(org.eclipse.jdt.internal.eval.EvaluationContext.getCodeSnippetSource());
writer.close();
org.eclipse.jdt.internal.compiler.batch.Main.compile(
	"d:/temp/CodeSnippet.java -d d:/temp -classpath d:/jdk1.2.2/jre/lib/rt.jar -verbose");
java.io.FileInputStream reader =  new java.io.FileInputStream("d:/temp/org/eclipse/jdt/internal/eval/target/CodeSnippet.class");
byte[] bytes = org.eclipse.jdt.internal.core.Util.readContentsAsBytes(reader);
reader.close();
StringBuffer buffer = new StringBuffer();
buffer.append("private byte[] getCodeSnippetBytes() {\n");
buffer.append("	return new byte[] {\n");
buffer.append("		");
for (int i = 0; i < bytes.length; i++) {
	buffer.append(bytes[i]);
	if (i == bytes.length - 1) {
		buffer.append("\n");
	} else {
		buffer.append(", ");
	}
}
buffer.append("	};\n");
buffer.append("}");
buffer.toString()
]
 */
byte[] getCodeSnippetBytes() {
	return new byte[] {
		-54, -2, -70, -66, 0, 3, 0, 45, 0, 35, 1, 0, 48, 111, 114, 103, 47, 101, 99, 108, 105, 112, 115, 101, 47, 106, 100, 116, 47, 105, 110, 116, 101, 114, 110, 97, 108, 47, 101, 118, 97, 108, 47, 116, 97, 114, 103, 101, 116, 47, 67, 111, 100, 101, 83, 110, 105, 112, 112, 101, 116, 7, 0, 1, 1, 0, 16, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 79, 98, 106, 101, 99, 116, 7, 0, 3, 1, 0, 10, 114, 101, 115, 117, 108, 116, 84, 121, 112, 101, 1, 0, 17, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 67, 108, 97, 115, 115, 59, 1, 0, 11, 114, 101, 115, 117, 108, 116, 86, 97, 108, 117, 101, 1, 0, 18, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 79, 98, 106, 101, 99, 116, 59, 1, 0, 7, 99, 108, 97, 115, 115, 36, 48, 1, 0, 9, 83, 121, 110, 116, 104, 101, 116, 105, 99, 1, 0, 6, 60, 105, 110, 105, 116, 62, 1, 0, 3, 40, 41, 86, 1, 0, 4, 67, 111, 100, 101, 12, 0, 11, 0, 12, 10, 0, 4, 0, 14, 1, 0, 14, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 86, 111, 105, 100, 7, 0, 16, 1, 0, 4, 84, 89, 80, 69, 12, 0, 18, 0, 6, 9, 0, 17, 0, 19, 12, 0, 5, 0, 6, 9, 0, 2, 0, 21, 12, 0, 7, 0, 8, 9, 0, 2, 0, 23, 1, 0, 15, 76, 105, 110, 101, 78, 117, 109, 98, 101, 114, 84, 97, 98, 108, 101, 1, 0, 13, 103, 101, 116, 82, 101, 115, 117, 108, 116, 84, 121, 112, 101, 1, 0, 19, 40, 41, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 67, 108, 97, 115, 115, 59, 1, 0, 14, 103, 101, 116, 82, 101, 115, 117, 108, 116, 86, 97, 108, 117, 101, 1, 0, 20, 40, 41, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 79, 98, 106, 101, 99, 116, 59, 1, 0, 3, 114, 117, 110, 1, 0, 9, 115, 101, 116, 82, 101, 115, 117, 108, 116, 1, 0, 38, 40, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 79, 98, 106, 101, 99, 116, 59, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 67, 108, 97, 115, 115, 59, 41, 86, 1, 0, 10, 83, 111, 117, 114, 99, 101, 70, 105, 108, 101, 1, 0, 16, 67, 111, 100, 101, 83, 110, 105, 112, 112, 101, 116, 46, 106, 97, 118, 97, 0, 33, 0, 2, 0, 4, 0, 0, 0, 3, 0, 2, 0, 5, 0, 6, 0, 0, 0, 2, 0, 7, 0, 8, 0, 0, 0, 8, 0, 9, 0, 6, 0, 1, 0, 10, 0, 0, 0, 0, 0, 5, 0, 1, 0, 11, 0, 12, 0, 1, 0, 13, 0, 0, 0, 53, 0, 2, 0, 1, 0, 0, 0, 17, 42, -73, 0, 15, 42, -78, 0, 20, -75, 0, 22, 42, 1, -75, 0, 24, -79, 0, 0, 0, 1, 0, 25, 0, 0, 0, 18, 0, 4, 0, 0, 0, 17, 0, 4, 0, 18, 0, 11, 0, 19, 0, 16, 0, 17, 0, 1, 0, 26, 0, 27, 0, 1, 0, 13, 0, 0, 0, 29, 0, 1, 0, 1, 0, 0, 0, 5, 42, -76, 0, 22, -80, 0, 0, 0, 1, 0, 25, 0, 0, 0, 6, 0, 1, 0, 0, 0, 24, 0, 1, 0, 28, 0, 29, 0, 1, 0, 13, 0, 0, 0, 29, 0, 1, 0, 1, 0, 0, 0, 5, 42, -76, 0, 24, -80, 0, 0, 0, 1, 0, 25, 0, 0, 0, 6, 0, 1, 0, 0, 0, 30, 0, 1, 0, 30, 0, 12, 0, 1, 0, 13, 0, 0, 0, 25, 0, 0, 0, 1, 0, 0, 0, 1, -79, 0, 0, 0, 1, 0, 25, 0, 0, 0, 6, 0, 1, 0, 0, 0, 36, 0, 1, 0, 31, 0, 32, 0, 1, 0, 13, 0, 0, 0, 43, 0, 2, 0, 3, 0, 0, 0, 11, 42, 43, -75, 0, 24, 42, 44, -75, 0, 22, -79, 0, 0, 0, 1, 0, 25, 0, 0, 0, 14, 0, 3, 0, 0, 0, 42, 0, 5, 0, 43, 0, 10, 0, 41, 0, 1, 0, 33, 0, 0, 0, 2, 0, 34
	};
}

Returns the source of the CodeSnippet class.
This is used to generate the binary of the CodeSnippetClass

/**
 * Returns the source of the CodeSnippet class.
 * This is used to generate the binary of the CodeSnippetClass
 */
public static String getCodeSnippetSource() {
	return
		"package org.eclipse.jdt.internal.eval.target;\n" + //$NON-NLS-1$
		"\n" + //$NON-NLS-1$
		"/*\n" + //$NON-NLS-1$
		" * (c) Copyright IBM Corp. 2000, 2001.\n" + //$NON-NLS-1$
		" * All Rights Reserved.\n" + //$NON-NLS-1$
		" */\n" + //$NON-NLS-1$
		"/**\n" + //$NON-NLS-1$
		" * The root of all code snippet classes. Code snippet classes\n" + //$NON-NLS-1$
		" * are supposed to overide the run() method.\n" + //$NON-NLS-1$
		" * <p>\n" + //$NON-NLS-1$
		" * IMPORTANT NOTE:\n" + //$NON-NLS-1$
		" * All methods in this class must be public since this class is going to be loaded by the\n" + //$NON-NLS-1$
		" * bootstrap class loader, and the other code snippet support classes might be loaded by \n" + //$NON-NLS-1$
		" * another class loader (so their runtime packages are going to be different).\n" + //$NON-NLS-1$
		" */\n" + //$NON-NLS-1$
		"public class CodeSnippet {\n" + //$NON-NLS-1$
		"	private Class resultType = void.class;\n" + //$NON-NLS-1$
		"	private Object resultValue = null;\n" + //$NON-NLS-1$
		"/**\n" + //$NON-NLS-1$
		" * Returns the result type of the code snippet evaluation.\n" + //$NON-NLS-1$
		" */\n" + //$NON-NLS-1$
		"public Class getResultType() {\n" + //$NON-NLS-1$
		"	return this.resultType;\n" + //$NON-NLS-1$
		"}\n" + //$NON-NLS-1$
		"/**\n" + //$NON-NLS-1$
		" * Returns the result value of the code snippet evaluation.\n" + //$NON-NLS-1$
		" */\n" + //$NON-NLS-1$
		"public Object getResultValue() {\n" + //$NON-NLS-1$
		"	return this.resultValue;\n" + //$NON-NLS-1$
		"}\n" + //$NON-NLS-1$
		"/**\n" + //$NON-NLS-1$
		" * The code snippet. Subclasses must override this method with a transformed code snippet\n" + //$NON-NLS-1$
		" * that stores the result using setResult(Class, Object).\n" + //$NON-NLS-1$
		" */\n" + //$NON-NLS-1$
		"public void run() {\n" + //$NON-NLS-1$
		"}\n" + //$NON-NLS-1$
		"/**\n" + //$NON-NLS-1$
		" * Stores the result type and value of the code snippet evaluation.\n" + //$NON-NLS-1$
		" */\n" + //$NON-NLS-1$
		"public void setResult(Object someResultValue, Class someResultType) {\n" + //$NON-NLS-1$
		"	this.resultValue = someResultValue;\n" + //$NON-NLS-1$
		"	this.resultType = someResultType;\n" + //$NON-NLS-1$
		"}\n" + //$NON-NLS-1$
		"}\n"; //$NON-NLS-1$
}

Returns the imports of this evaluation context. An import is the name of a package
or the fully qualified name of a type as defined in the import statement of
a compilation unit.

/**
 * Returns the imports of this evaluation context. An import is the name of a package
 * or the fully qualified name of a type as defined in the import statement of
 * a compilation unit.
 */
public char[][] getImports() {
	return this.imports;
}

Returns the dot-separated name of the package code snippets are run into.
Returns an empty array for the default package. This is the default if
the package name has never been set.

/**
 * Returns the dot-separated name of the package code snippets are run into.
 * Returns an empty array for the default package. This is the default if
 * the package name has never been set.
 */
public char[] getPackageName() {
	return this.packageName;
}

Return the binary for the root code snippet class (i.e. org.eclipse.jdt.internal.eval.target.CodeSnippet).

/**
 * Return the binary for the root code snippet class (i.e. org.eclipse.jdt.internal.eval.target.CodeSnippet).
 */
IBinaryType getRootCodeSnippetBinary() {
	if (this.codeSnippetBinary == null) {
		this.codeSnippetBinary = new CodeSnippetSkeleton();
	}
	return this.codeSnippetBinary;
}
public char[] getVarClassName() {
	if (this.installedVars == null) return CharOperation.NO_CHAR;
	return CharOperation.concat(this.installedVars.packageName, this.installedVars.className, '.');
}

Creates a new global variable with the given name, type and initializer.
If the variable is not initialized, the initializer can be null.
Note that this doesn't install it to this evaluation context's VM.

See Also:
  • GlobalVariable
/**
 * Creates a new global variable with the given name, type and initializer.
 * If the variable is not initialized, the initializer can be null.
 * Note that this doesn't install it to this evaluation context's VM.
 *
 * @see GlobalVariable
 */
public GlobalVariable newVariable(char[] typeName, char[] name, char[] initializer) {
	GlobalVariable var = new GlobalVariable(typeName, name, initializer);
	if (this.variableCount >= this.variables.length) // assume variables is never empty
		System.arraycopy(this.variables, 0, this.variables = new GlobalVariable[this.variableCount * 2], 0, this.variableCount);
	this.variables[this.variableCount++] = var;
	this.varsChanged = true;
	return var;
}

Computes the selection at the specified positions of the given code snippet.
(Note that this evaluation context's VM doesn't need to be running.)
 @param codeSnippet char[]
		The code snipper source
 @param selectionSourceStart int
 @param selectionSourceEnd int
 @param environment org.eclipse.jdt.internal.core.SearchableEnvironment
     used to resolve type/package references and search for types/packages
     based on partial names.
 @param requestor org.eclipse.jdt.internal.codeassist.ISelectionRequestor
     since the engine might produce answers of various forms, the engine
     is associated with a requestor able to accept all possible selections.
 @param options java.util.Map
	set of options used to configure the code assist engine.

/**
 * Computes the selection at the specified positions of the given code snippet.
 * (Note that this evaluation context's VM doesn't need to be running.)
 *  @param codeSnippet char[]
 * 		The code snipper source
 *
 *  @param selectionSourceStart int
 *
 *  @param selectionSourceEnd int
 *
 *  @param environment org.eclipse.jdt.internal.core.SearchableEnvironment
 *      used to resolve type/package references and search for types/packages
 *      based on partial names.
 *
 *  @param requestor org.eclipse.jdt.internal.codeassist.ISelectionRequestor
 *      since the engine might produce answers of various forms, the engine
 *      is associated with a requestor able to accept all possible selections.
 *
 *  @param options java.util.Map
 *		set of options used to configure the code assist engine.
 */
public void select(
	char[] codeSnippet,
	int selectionSourceStart,
	int selectionSourceEnd,
	SearchableEnvironment environment,
	ISelectionRequestor requestor,
	Map<String, String> options,
	WorkingCopyOwner owner) {

	final char[] className = "CodeSnippetSelection".toCharArray(); //$NON-NLS-1$
	final long complianceVersion = CompilerOptions.versionToJdkLevel(options.get(JavaCore.COMPILER_COMPLIANCE));
	final CodeSnippetToCuMapper mapper = new CodeSnippetToCuMapper(
		codeSnippet,
		this.packageName,
		this.imports,
		className,
		this.installedVars == null ? null : this.installedVars.className,
		this.localVariableNames,
		this.localVariableTypeNames,
		this.localVariableModifiers,
		this.declaringTypeName,
		this.lineSeparator,
		complianceVersion
	);
	ICompilationUnit sourceUnit = new ICompilationUnit() {
		@Override
		public char[] getFileName() {
			return CharOperation.concat(className, Util.defaultJavaExtension().toCharArray());
		}
		@Override
		public char[] getContents() {
			return mapper.getCUSource(EvaluationContext.this.lineSeparator);
		}
		@Override
		public char[] getMainTypeName() {
			return className;
		}
		@Override
		public char[][] getPackageName() {
			return null;
		}
		@Override
		public boolean ignoreOptionalProblems() {
			return false;
		}
		@Override
		public char[] getModuleName() {
			return null;
		}
	};
	SelectionEngine engine = new SelectionEngine(environment, mapper.getSelectionRequestor(requestor), options, owner);
	engine.select(sourceUnit, mapper.startPosOffset + selectionSourceStart, mapper.startPosOffset + selectionSourceEnd);
}

Sets the imports of this evaluation context. An import is the name of a package
or the fully qualified name of a type as defined in the import statement of
a compilation unit (see the Java Language Specifications for more details).

/**
 * Sets the imports of this evaluation context. An import is the name of a package
 * or the fully qualified name of a type as defined in the import statement of
 * a compilation unit (see the Java Language Specifications for more details).
 */
public void setImports(char[][] imports) {
	this.imports = imports;
	this.varsChanged = true; // this may change the visibility of the variable's types
}

Sets the line separator used by this evaluation context.

/**
 * Sets the line separator used by this evaluation context.
 */
public void setLineSeparator(String lineSeparator) {
	this.lineSeparator = lineSeparator;
}

Sets the dot-separated name of the package code snippets are ran into.
The default package name is an empty array.

/**
 * Sets the dot-separated name of the package code snippets are ran into.
 * The default package name is an empty array.
 */
public void setPackageName(char[] packageName) {
	this.packageName = packageName;
	this.varsChanged = true; // this may change the visibility of the variable's types
}
}