Package org.codehaus.commons.compiler.jdk

Class ScriptEvaluator

java.lang.Object

org.codehaus.commons.compiler.Cookable

org.codehaus.commons.compiler.MultiCookable

org.codehaus.commons.compiler.jdk.ScriptEvaluator

All Implemented Interfaces:

ICookable, IMultiCookable, IScriptEvaluator

public class ScriptEvaluator
extends MultiCookable
implements IScriptEvaluator

To set up a ScriptEvaluator object, proceed as described for IScriptEvaluator. Alternatively, a number of "convenience constructors" exist that execute the described steps instantly.

Alternatively, a number of "convenience constructors" exist that execute the steps described above instantly. Their use is discouraged.

Notice that this implementation of IClassBodyEvaluator is prone to "Java injection", i.e. an application could get more than one class body compiled by passing a bogus input document.

Also notice that the parsing of leading IMPORT declarations is heuristic and has certain limitations; see ClassBodyEvaluator.parseImportDeclarations(Reader).

Field Summary

Fields inherited from interface org.codehaus.commons.compiler.IScriptEvaluator

DEFAULT_METHOD_NAME, DEFAULT_RETURN_TYPE

Constructor Summary

Constructors

Constructor	Description
ScriptEvaluator()
ScriptEvaluator(java.lang.String script)	Equivalent to
ScriptEvaluator(java.lang.String fileName, java.io.InputStream is, java.lang.Class<?> returnType, java.lang.String[] parameterNames, java.lang.Class<?>[] parameterTypes, java.lang.Class<?>[] thrownExceptions, java.lang.ClassLoader parentClassLoader)	Equivalent to
ScriptEvaluator(java.lang.String fileName, java.io.Reader reader, java.lang.Class<?> returnType, java.lang.String[] parameterNames, java.lang.Class<?>[] parameterTypes, java.lang.Class<?>[] thrownExceptions, java.lang.ClassLoader parentClassLoader)	Equivalent to
ScriptEvaluator(java.lang.String script, java.lang.Class<?> returnType)	Equivalent to
ScriptEvaluator(java.lang.String script, java.lang.Class<?> returnType, java.lang.String[] parameterNames, java.lang.Class<?>[] parameterTypes)	Equivalent to
ScriptEvaluator(java.lang.String script, java.lang.Class<?> returnType, java.lang.String[] parameterNames, java.lang.Class<?>[] parameterTypes, java.lang.Class<?>[] thrownExceptions)	Equivalent to

Method Summary

Modifier and Type	Method	Description
void	cook(java.lang.String[] fileNames, java.io.Reader[] readers)	Same as Cookable.cook(String, Reader), but cooks a set of documents into one class.
protected void	cook(java.lang.String[] fileNames, java.io.Reader[] readers, java.lang.String[] imports)
void	cook(java.lang.String fileName, java.io.Reader reader)	Reads, scans, parses and compiles Java tokens from the given Reader.
<T> T	createFastEvaluator(java.io.Reader r, java.lang.Class<T> interfaceToImplement, java.lang.String[] parameterNames)	If the parameter and return types of the expression are known at compile time, then a "fast" script evaluator can be instantiated through this method.
<T> T	createFastEvaluator(java.lang.String script, java.lang.Class<T> interfaceToImplement, java.lang.String[] parameterNames)
java.lang.Object	evaluate()	Shorthand for evaluate(new Object[0]).
java.lang.Object	evaluate(int idx, java.lang.Object[] arguments)	Same as IScriptEvaluator.evaluate(Object[]), but for multiple scripts.
java.lang.Object	evaluate(java.lang.Object[] arguments)	Calls the script with concrete parameter values.
java.util.Map<java.lang.String,byte[]>	getBytecodes()
java.lang.Class<?>	getClazz()
java.lang.String[]	getDefaultImports()
java.lang.Class<?>	getDefaultReturnType()
java.lang.reflect.Method	getMethod()
java.lang.reflect.Method	getMethod(int idx)	Same as IScriptEvaluator.getMethod(), but for multiple scripts.
protected java.lang.reflect.Method[]	getMethods()
java.lang.reflect.Method[]	getResult()
protected java.lang.Class<?>	getReturnType(int i)
void	setClassName(java.lang.String className)
void	setCompileErrorHandler(ErrorHandler compileErrorHandler)	Installs an ErrorHandler which is invoked during compilation on each error.
void	setDebuggingInformation(boolean debugSource, boolean debugLines, boolean debugVars)	Determines what kind of debugging information is included in the generates classes.
void	setDefaultImports(java.lang.String... defaultImports)
void	setDefaultReturnType(java.lang.Class<?> defaultReturnType)	When this IScriptEvaluator is coooked, then the defaultReturnType applies to all scripts for which no explicit return type was configured.
void	setExtendedClass(java.lang.Class<?> extendedClass)
void	setImplementedInterfaces(java.lang.Class<?>[] implementedInterfaces)
void	setMethodName(java.lang.String methodName)	Defines the name of the generated method.
void	setMethodNames(java.lang.String[] methodNames)	Same as IScriptEvaluator.setMethodName(String), but for multiple scripts.
void	setOverrideMethod(boolean overrideMethod)	Defines whether the generated method overrides a methods declared in a supertype.
void	setOverrideMethod(boolean[] overrideMethod)	Same as IScriptEvaluator.setOverrideMethod(boolean), but for multiple scripts.
void	setParameters(java.lang.String[][] parameterNames, java.lang.Class<?>[][] parameterTypes)	Same as IScriptEvaluator.setParameters(String[], Class[]), but for multiple scripts.
void	setParameters(java.lang.String[] names, java.lang.Class<?>[] types)	Defines the names and types of the parameters of the generated method.
void	setParentClassLoader(java.lang.ClassLoader parentClassLoader)	The "parent class loader" is used to load referenced classes.
void	setReturnType(java.lang.Class<?> returnType)	Defines the return type of the generated method.
void	setReturnTypes(java.lang.Class<?>[] returnTypes)	Configures the return types of the generated methods.
void	setScriptCount(int count)
void	setSourceVersion(int version)	Specifies the version of source code accepted, in analogy with JAVAC's -source command line option.
void	setStaticMethod(boolean staticMethod)	Defines whether the generated method should be STATIC or not.
void	setStaticMethod(boolean[] staticMethod)	Same as IScriptEvaluator.setStaticMethod(boolean), but for multiple scripts.
void	setTargetVersion(int version)	Generates class files that target a specified release of the virtual machine, in analogy with JAVAC's -target command line option.
void	setThrownExceptions(java.lang.Class<?>[] thrownExceptions)	Defines the exceptions that the generated method may throw.
void	setThrownExceptions(java.lang.Class<?>[][] thrownExceptions)	Same as IScriptEvaluator.setThrownExceptions(Class[]), but for multiple scripts.
void	setWarningHandler(WarningHandler warningHandler)	By default, warnings are discarded, but an application my install a custom WarningHandler.

Methods inherited from class org.codehaus.commons.compiler.MultiCookable

cook, cook, cook, cook, cook, cook, cook, cookFiles, cookFiles, cookFiles, cookFiles

Methods inherited from class org.codehaus.commons.compiler.Cookable

cook, cook, cook, cook, cook, cook, cook, cookFile, cookFile, cookFile, cookFile

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.codehaus.commons.compiler.ICookable

cook, cook, cook, cook, cook, cook, cook, cookFile, cookFile, cookFile, cookFile

Methods inherited from interface org.codehaus.commons.compiler.IMultiCookable

cook, cook, cook, cook, cookFiles, cookFiles, cookFiles, cookFiles

Methods inherited from interface org.codehaus.commons.compiler.IScriptEvaluator

cook, cook, cook

Constructor Detail

ScriptEvaluator

public ScriptEvaluator(java.lang.String script)
                throws CompileException

Equivalent to

     ScriptEvaluator se = new ScriptEvaluator();
     se.cook(script);
 

Throws:

CompileException

See Also:

ScriptEvaluator(), Cookable.cook(String)

ScriptEvaluator

public ScriptEvaluator(java.lang.String script,
                       java.lang.Class<?> returnType)
                throws CompileException

Equivalent to

     ScriptEvaluator se = new ScriptEvaluator();
     se.setReturnType(returnType);
     se.cook(script);
 

Throws:

CompileException

See Also:

ScriptEvaluator(), setReturnType(Class), Cookable.cook(String)

ScriptEvaluator

public ScriptEvaluator(java.lang.String script,
                       java.lang.Class<?> returnType,
                       java.lang.String[] parameterNames,
                       java.lang.Class<?>[] parameterTypes)
                throws CompileException

Equivalent to

     ScriptEvaluator se = new ScriptEvaluator();
     se.setReturnType(returnType);
     se.setParameters(parameterNames, parameterTypes);
     se.cook(script);
 

Throws:

CompileException

See Also:

ScriptEvaluator(), setReturnType(Class), setParameters(String[], Class[]), Cookable.cook(String)

ScriptEvaluator

public ScriptEvaluator(java.lang.String script,
                       java.lang.Class<?> returnType,
                       java.lang.String[] parameterNames,
                       java.lang.Class<?>[] parameterTypes,
                       java.lang.Class<?>[] thrownExceptions)
                throws CompileException

Equivalent to

     ScriptEvaluator se = new ScriptEvaluator();
     se.setReturnType(returnType);
     se.setParameters(parameterNames, parameterTypes);
     se.setThrownExceptions(thrownExceptions);
     se.cook(script);
 

Throws:

CompileException

See Also:

ScriptEvaluator(), setReturnType(Class), setParameters(String[], Class[]), setThrownExceptions(Class[]), Cookable.cook(String)

ScriptEvaluator

public ScriptEvaluator(@Nullable
                       java.lang.String fileName,
                       java.io.InputStream is,
                       java.lang.Class<?> returnType,
                       java.lang.String[] parameterNames,
                       java.lang.Class<?>[] parameterTypes,
                       java.lang.Class<?>[] thrownExceptions,
                       @Nullable
                       java.lang.ClassLoader parentClassLoader)
                throws CompileException,
                       java.io.IOException

Equivalent to

     ScriptEvaluator se = new ScriptEvaluator();
     se.setReturnType(returnType);
     se.setParameters(parameterNames, parameterTypes);
     se.setThrownExceptions(thrownExceptions);
     se.setParentClassLoader(parentClassLoader);
     se.cook(fileName, is);
 

Parameters:

parentClassLoader - null means use current thread's context class loader

Throws:

CompileException

java.io.IOException

See Also:

ScriptEvaluator(), setReturnType(Class), setParameters(String[], Class[]), setThrownExceptions(Class[]), SimpleCompiler.setParentClassLoader(ClassLoader), Cookable.cook(String, InputStream)

ScriptEvaluator

public ScriptEvaluator(@Nullable
                       java.lang.String fileName,
                       java.io.Reader reader,
                       java.lang.Class<?> returnType,
                       java.lang.String[] parameterNames,
                       java.lang.Class<?>[] parameterTypes,
                       java.lang.Class<?>[] thrownExceptions,
                       @Nullable
                       java.lang.ClassLoader parentClassLoader)
                throws CompileException,
                       java.io.IOException

Equivalent to

     ScriptEvaluator se = new ScriptEvaluator();
     se.setReturnType(returnType);
     se.setParameters(parameterNames, parameterTypes);
     se.setThrownExceptions(thrownExceptions);
     se.setParentClassLoader(parentClassLoader);
     se.cook(reader);
 

Parameters:

parentClassLoader - null means use current thread's context class loader

Throws:

CompileException

java.io.IOException

See Also:

ScriptEvaluator(), setReturnType(Class), setParameters(String[], Class[]), setThrownExceptions(Class[]), SimpleCompiler.setParentClassLoader(ClassLoader), Cookable.cook(String, Reader)

ScriptEvaluator

public ScriptEvaluator()

Method Detail

setParentClassLoader

public void setParentClassLoader(@Nullable
                                 java.lang.ClassLoader parentClassLoader)

Description copied from interface: IScriptEvaluator

The "parent class loader" is used to load referenced classes. Useful values are:

System.getSystemClassLoader()	The running JVM's class path
Thread.currentThread().getContextClassLoader() or null	The class loader effective for the invoking thread
ClassLoaders.BOOTCLASSPATH_CLASS_LOADER	The running JVM's boot class path

The parent class loader defaults to the current thread's context class loader.

Specified by:

setParentClassLoader in interface IScriptEvaluator

setDebuggingInformation

public void setDebuggingInformation(boolean debugSource,
                                    boolean debugLines,
                                    boolean debugVars)

Description copied from interface: IScriptEvaluator

Determines what kind of debugging information is included in the generates classes. The default is typically "-g:none".

Specified by:

setDebuggingInformation in interface IScriptEvaluator

setSourceVersion

public void setSourceVersion(int version)

Description copied from interface: ICookable

Specifies the version of source code accepted, in analogy with JAVAC's -source command line option. May be ignored by an implementation (e.g. the janino implementation always accepts the language features as described on the home page). Allowed values, and the default value, depend on the implementation. -1 means to use a default version.

Specified by:

setSourceVersion in interface ICookable

setTargetVersion

public void setTargetVersion(int version)

Description copied from interface: ICookable

Generates class files that target a specified release of the virtual machine, in analogy with JAVAC's -target command line option. Allowed values depend on the implementation. The default value also depends on the implementation. The only invariant is that the generated class files are suitable for the currently executing JVM. -1 means to use a default version.

Specified by:

setTargetVersion in interface ICookable

setCompileErrorHandler

public void setCompileErrorHandler(@Nullable
                                   ErrorHandler compileErrorHandler)

Description copied from interface: IScriptEvaluator

Installs an ErrorHandler which is invoked during compilation on each error. (By default, the compilation throws a CompileException on the first error and terminates.)

If the given ErrorHandler throws a CompileException, then the compilation terminates and the exception is propagated.

If the given ErrorHandler does not throw a CompileException but completes normally, then the compilation may or may not continue, depending on the error. Iff the compilation completes normally but errors were reported, then it will throw a CompileException indicating the number of errors.

In other words: The ErrorHandler may throw a CompileException or not, but the compilation will definitely throw a CompileException if one or more compile errors have occurred.

Specified by:

setCompileErrorHandler in interface IScriptEvaluator

Parameters:

compileErrorHandler - null to restore the default behavior (throwing a CompileException)

setWarningHandler

public void setWarningHandler(@Nullable
                              WarningHandler warningHandler)

Description copied from interface: IScriptEvaluator

By default, warnings are discarded, but an application my install a custom WarningHandler.

Specified by:

setWarningHandler in interface IScriptEvaluator

Parameters:

warningHandler - null to indicate that no warnings be issued

setScriptCount

public void setScriptCount(int count)

Throws:

java.lang.IllegalArgumentException - count is different from previous invocations of this method

setClassName

public void setClassName(java.lang.String className)

Specified by:

setClassName in interface IScriptEvaluator

See Also:

IClassBodyEvaluator.setClassName(String)

setImplementedInterfaces

public void setImplementedInterfaces(java.lang.Class<?>[] implementedInterfaces)

Specified by:

setImplementedInterfaces in interface IScriptEvaluator

See Also:

IClassBodyEvaluator.setImplementedInterfaces(Class[])

setExtendedClass

public void setExtendedClass(@Nullable
                             java.lang.Class<?> extendedClass)

Specified by:

setExtendedClass in interface IScriptEvaluator

See Also:

IClassBodyEvaluator.setExtendedClass(Class)

setDefaultReturnType

public void setDefaultReturnType(java.lang.Class<?> defaultReturnType)

Description copied from interface: IScriptEvaluator

When this IScriptEvaluator is coooked, then the defaultReturnType applies to all scripts for which no explicit return type was configured.

The initial default return type (if you want, the "default-default" return type) is void.class.

Specified by:

setDefaultReturnType in interface IScriptEvaluator

See Also:

IScriptEvaluator.setReturnType(Class), IScriptEvaluator.setReturnTypes(Class[])

getDefaultReturnType

public java.lang.Class<?> getDefaultReturnType()

Specified by:

getDefaultReturnType in interface IScriptEvaluator

Returns:

The default return type that was previously configured with IScriptEvaluator.setDefaultReturnType(Class), or IScriptEvaluator.DEFAULT_RETURN_TYPE

setDefaultImports

public void setDefaultImports(java.lang.String... defaultImports)

Specified by:

setDefaultImports in interface IScriptEvaluator

See Also:

IClassBodyEvaluator.setDefaultImports(String...)

getDefaultImports

public java.lang.String[] getDefaultImports()

Specified by:

getDefaultImports in interface IScriptEvaluator

See Also:

IClassBodyEvaluator.getDefaultImports()

setOverrideMethod

public void setOverrideMethod(boolean overrideMethod)

Description copied from interface: IScriptEvaluator

Defines whether the generated method overrides a methods declared in a supertype.

Specified by:

setOverrideMethod in interface IScriptEvaluator

setStaticMethod

public void setStaticMethod(boolean staticMethod)

Description copied from interface: IScriptEvaluator

Defines whether the generated method should be STATIC or not. Defaults to true.

Specified by:

setStaticMethod in interface IScriptEvaluator

setReturnType

public void setReturnType(java.lang.Class<?> returnType)

Description copied from interface: IScriptEvaluator

Defines the return type of the generated method. Value null means "use the default return type".

Specified by:

setReturnType in interface IScriptEvaluator

See Also:

IScriptEvaluator.setDefaultReturnType(Class)

setMethodName

public void setMethodName(@Nullable
                          java.lang.String methodName)

Description copied from interface: IScriptEvaluator

Defines the name of the generated method. Initially, the method name is "eval*".

Specified by:

setMethodName in interface IScriptEvaluator

Parameters:

methodName - null means reset to default name

See Also:

IScriptEvaluator.DEFAULT_METHOD_NAME

setParameters

public void setParameters(java.lang.String[] names,
                          java.lang.Class<?>[] types)

Description copied from interface: IScriptEvaluator

Defines the names and types of the parameters of the generated method.

names.length and types.length must be equal. This invariant may be checked immediately, or later when the script is cooked.

The parameters can be of primitive type, e.g. double.class.

The default is to have zero parameters.

Specified by:

setParameters in interface IScriptEvaluator

setThrownExceptions

public void setThrownExceptions(java.lang.Class<?>[] thrownExceptions)

Description copied from interface: IScriptEvaluator

Defines the exceptions that the generated method may throw.

Specified by:

setThrownExceptions in interface IScriptEvaluator

evaluate

@Nullable
public java.lang.Object evaluate()
                          throws java.lang.reflect.InvocationTargetException

Description copied from interface: IScriptEvaluator

Shorthand for evaluate(new Object[0]).

Specified by:

evaluate in interface IScriptEvaluator

Throws:

java.lang.reflect.InvocationTargetException

evaluate

@Nullable
public java.lang.Object evaluate(@Nullable
                                 java.lang.Object[] arguments)
                          throws java.lang.reflect.InvocationTargetException

Description copied from interface: IScriptEvaluator

Calls the script with concrete parameter values.

Each argument must have the same type as specified through the parameterTypes parameter of IScriptEvaluator.setParameters(String[], Class[]).

Arguments of primitive type must passed with their wrapper class objects.

The object returned has the class as specified through IScriptEvaluator.setReturnType(Class).

This method is thread-safe.

Notice: In version 3.1.8, the arguments parameter was changed from Object[] to Object..., which turned out to be a really bad decision because it caused a very ugly invocation ambiguity with IScriptEvaluator.evaluate(int, Object[]). Thus, with version 3.1.10, the parameter was changed back to Object[].

Specified by:

evaluate in interface IScriptEvaluator

Parameters:

arguments - The actual parameter values

Throws:

java.lang.reflect.InvocationTargetException

getMethod

public java.lang.reflect.Method getMethod()

Specified by:

getMethod in interface IScriptEvaluator

Returns:

The generated and loaded Method

setOverrideMethod

public void setOverrideMethod(boolean[] overrideMethod)

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.setOverrideMethod(boolean), but for multiple scripts.

Specified by:

setOverrideMethod in interface IScriptEvaluator

setStaticMethod

public void setStaticMethod(boolean[] staticMethod)

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.setStaticMethod(boolean), but for multiple scripts.

Specified by:

setStaticMethod in interface IScriptEvaluator

setReturnTypes

public void setReturnTypes(java.lang.Class<?>[] returnTypes)

Description copied from interface: IScriptEvaluator

Configures the return types of the generated methods. If an element of the array is null, then use the "default return type" for that script.

Specified by:

setReturnTypes in interface IScriptEvaluator

Parameters:

returnTypes - The methods' return types; null elements mean "use the default return type"

See Also:

IScriptEvaluator.setDefaultReturnType(Class), IScriptEvaluator.getDefaultReturnType()

setMethodNames

public void setMethodNames(java.lang.String[] methodNames)

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.setMethodName(String), but for multiple scripts.

Define the names of the generated methods. By default the methods have distinct and implementation-specific names.

If two scripts have the same name, then they must have different parameter types (see IScriptEvaluator.setParameters(String[][], Class[][])).

Specified by:

setMethodNames in interface IScriptEvaluator

setParameters

public void setParameters(java.lang.String[][] parameterNames,
                          java.lang.Class<?>[][] parameterTypes)

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.setParameters(String[], Class[]), but for multiple scripts.

Specified by:

setParameters in interface IScriptEvaluator

setThrownExceptions

public void setThrownExceptions(java.lang.Class<?>[][] thrownExceptions)

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.setThrownExceptions(Class[]), but for multiple scripts.

Specified by:

setThrownExceptions in interface IScriptEvaluator

cook

public void cook(@Nullable
                 java.lang.String fileName,
                 java.io.Reader reader)
          throws CompileException,
                 java.io.IOException

Description copied from interface: ICookable

Reads, scans, parses and compiles Java tokens from the given Reader.

Specified by:

cook in interface ICookable

Specified by:

cook in class Cookable

Parameters:

fileName - Used when reporting errors and warnings

Throws:

CompileException

java.io.IOException

cook

public void cook(java.lang.String[] fileNames,
                 java.io.Reader[] readers)
          throws CompileException,
                 java.io.IOException

Description copied from interface: IMultiCookable

Same as Cookable.cook(String, Reader), but cooks a set of documents into one class. Notice that if any of the documents causes trouble, the entire compilation will fail. If you need to report which of the documents causes the exception, you may want to use the fileNames parameter to distinguish between the individual token sources.

Specified by:

cook in interface IMultiCookable

Specified by:

cook in interface IScriptEvaluator

Specified by:

cook in class MultiCookable

Throws:

CompileException

java.io.IOException

cook

protected final void cook(java.lang.String[] fileNames,
                          java.io.Reader[] readers,
                          java.lang.String[] imports)
                   throws CompileException,
                          java.io.IOException

Parameters:

readers - The scripts to cook

Throws:

CompileException

java.io.IOException

getReturnType

protected final java.lang.Class<?> getReturnType(int i)

Returns:

The return type of the ith script

createFastEvaluator

public <T> T createFastEvaluator(java.lang.String script,
                                 java.lang.Class<T> interfaceToImplement,
                                 java.lang.String[] parameterNames)
                          throws CompileException

Specified by:

createFastEvaluator in interface IScriptEvaluator

Parameters:

script - Contains the sequence of script tokens

Throws:

CompileException

See Also:

createFastEvaluator(String, Class, String[])

createFastEvaluator

public <T> T createFastEvaluator(java.io.Reader r,
                                 java.lang.Class<T> interfaceToImplement,
                                 java.lang.String[] parameterNames)
                          throws CompileException,
                                 java.io.IOException

Description copied from interface: IScriptEvaluator

If the parameter and return types of the expression are known at compile time, then a "fast" script evaluator can be instantiated through this method.

Script evaluation is faster than through IScriptEvaluator.evaluate(Object[]), because it is not done through reflection but through direct method invocation.

Example:

 public interface Foo {
     int bar(int a, int b);
 }
 ...
 IScriptEvaluator se = CompilerFactoryFactory.getDefaultCompilerFactory().newScriptEvaluator();

 // Optionally configure the SE her:
 se.setClassName("Bar");
 se.setDefaultImports(new String[] { "java.util.*" });
 se.setExtendedClass(SomeOtherClass.class);
 se.setParentClassLoader(someClassLoader);

 Foo f = (Foo) se.createFastScriptEvaluator(
     "return a - b;",
     Foo.class,
     new String[] { "a", "b" }
 );
 System.out.println("1 - 2 = " + f.bar(1, 2));
 

All other configuration (implemented type, static method, return type, method name, parameter names and types, thrown exceptions) are predetermined by the interfaceToImplement.

Notice: The interfaceToImplement must either be declared public, or with package scope in the same package as the generated class (see IScriptEvaluator.setClassName(String)).

s

Specified by:

createFastEvaluator in interface IScriptEvaluator

Parameters:

r - Produces the stream of script tokens

interfaceToImplement - Must declare exactly one method

parameterNames - The names of the parameters of that method

Returns:

An object that implements the given interface

Throws:

CompileException

java.io.IOException

evaluate

@Nullable
public java.lang.Object evaluate(int idx,
                                 @Nullable
                                 java.lang.Object[] arguments)
                          throws java.lang.reflect.InvocationTargetException

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.evaluate(Object[]), but for multiple scripts.

Specified by:

evaluate in interface IScriptEvaluator

Throws:

java.lang.reflect.InvocationTargetException

getResult

public java.lang.reflect.Method[] getResult()

Specified by:

getResult in interface IScriptEvaluator

Returns:

The generated and loaded methods that implement the cooked scripts

getMethod

public java.lang.reflect.Method getMethod(int idx)

Description copied from interface: IScriptEvaluator

Same as IScriptEvaluator.getMethod(), but for multiple scripts.

Specified by:

getMethod in interface IScriptEvaluator

getMethods

protected java.lang.reflect.Method[] getMethods()

Throws:

java.lang.IllegalStateException - This ScriptEvaluator has not yet been cook()ed

getClazz

public java.lang.Class<?> getClazz()

Specified by:

getClazz in interface IScriptEvaluator

See Also:

IClassBodyEvaluator.getClazz()

getBytecodes

public java.util.Map<java.lang.String,byte[]> getBytecodes()

Specified by:

getBytecodes in interface ICookable

Returns:

The generated Java bytecode; maps class name to bytes