Class BaseExpression

java.lang.Object

com.googlecode.aviator.BaseExpression

All Implemented Interfaces:

Expression, Serializable

Direct Known Subclasses:

ClassExpression, InterpretExpression, LiteralExpression

public abstract class BaseExpression
extends Object
implements Expression

Base expression

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	BaseExpression.SymbolHashMap

Field Summary

Fields

Modifier and Type	Field	Description
private Env	compileEnv
private String	expression
private List<String>	filteredFunctionNames
static final String	FUNC_PARAMS_VAR
private Map<Integer, List<FunctionArgument>>	funcsArgs
private List<String>	functionNames
protected AviatorEvaluatorInstance	instance
protected Map<String, LambdaFunctionBootstrap>	lambdaBootstraps
private static final long	serialVersionUID
protected String	sourceFile
private ConcurrentHashMap<String, FutureTask<AviatorEvaluatorInstance.StringSegments>>	stringSegs
protected SymbolTable	symbolTable
protected List<String>	varFullNames
protected List<String>	varNames
private List<VariableMeta>	vars

Constructor Summary

Constructors

Constructor	Description
BaseExpression(AviatorEvaluatorInstance instance, List<VariableMeta> vars, SymbolTable symbolTable)

Method Summary

Modifier and Type	Method	Description
String	addSymbol(String name)	Adds the specified symbol to the symbol table and returns a reference to the unique symbol.
protected void	afterPopulateFullNames(Map<String, VariableMeta> fullNames, Set<String> parentVars)
void	customReadObject(ObjectInputStream input)
void	customWriteObject(ObjectOutputStream output)
Object	execute()	Execute an expression with an empty environment, returns the result.
Object	execute(Map<String,Object> map)	Execute an expression with an environment, returns the result.
protected Object	execute(Map<String,Object> map, boolean checkExecutionTimeout)
abstract Object	executeDirectly(Map<String,Object> env)
protected Env	genTopEnv(Map<String,Object> map, boolean checkExecutionTimeout)
Env	getCompileEnv()
private long	getExecutionStartNs(boolean checkExecutionTimeout)
String	getExpression()	Returns the expression string when turn on Options.TRACE_EVAL option, else returns null.
Map<String, VariableMeta>	getFullNameMetas()
List<String>	getFunctionNames()	Returns the function names in the expression when using AviatorEvaluator.EVAL mode, otherwise returns an empty list.
Map<String, LambdaFunctionBootstrap>	getLambdaBootstraps()
String	getSourceFile()	Returns the source file name.
AviatorEvaluatorInstance.StringSegments	getStringSegements(String lexeme, int lineNo)
List<String>	getVariableFullNames()	Returns this expression's all uninitialized global variable full names(contains dot) in order when using AviatorEvaluator.EVAL mode, otherwise returns an empty list.
List<String>	getVariableNames()	Returns this expression's all uninitialized global variable names in order when using AviatorEvaluator.EVAL mode, otherwise returns an empty list.
List<VariableMeta>	getVars()
Map<String,Object>	newEnv(Object... args)	Created a faster env map(compare variable names by reference).The arguments should be a sequence of pair invalid input: '<'String, Object>.
protected Env	newEnv(Map<String,Object> map)
protected Env	newEnv(Map<String,Object> map, boolean direct, boolean checkExecutionTimeout)
LambdaFunction	newLambda(Env env, String name)
private void	populateFilteredFuncNames()
private void	populateFullNames()
private void	populateNames()
protected void	setCompileEnv(Env compileEnv)
protected void	setExpression(String expression)
protected void	setFuncsArgs(Map<Integer, List<FunctionArgument>> funcsArgs)
protected void	setFunctionNames(List<String> functionNames)
protected void	setInstance(AviatorEvaluatorInstance instance)
protected void	setLambdaBootstraps(Map<String, LambdaFunctionBootstrap> lambdaBootstraps)
protected void	setSourceFile(String sourceFile)

Methods inherited from class Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

FUNC_PARAMS_VAR

public static final String FUNC_PARAMS_VAR

See Also:

• Constant Field Values

varNames

protected transient List<String> varNames

varFullNames

protected transient List<String> varFullNames

vars

private List<VariableMeta> vars

expression

private String expression

instance

protected transient AviatorEvaluatorInstance instance

compileEnv

private Env compileEnv

funcsArgs

private Map<Integer, List<FunctionArgument>> funcsArgs

symbolTable

protected SymbolTable symbolTable

stringSegs

private transient ConcurrentHashMap<String, FutureTask<AviatorEvaluatorInstance.StringSegments>> stringSegs

functionNames

private List<String> functionNames

filteredFunctionNames

private transient List<String> filteredFunctionNames

sourceFile

protected String sourceFile

lambdaBootstraps

protected Map<String, LambdaFunctionBootstrap> lambdaBootstraps

Constructor Details

BaseExpression

public BaseExpression(AviatorEvaluatorInstance instance,
 List<VariableMeta> vars,
 SymbolTable symbolTable)

Method Details

getSourceFile

public String getSourceFile()

Description copied from interface: Expression

Returns the source file name.

Specified by:

getSourceFile in interface Expression

Returns:

the source file name

setSourceFile

protected void setSourceFile(String sourceFile)

setInstance

protected void setInstance(AviatorEvaluatorInstance instance)

populateNames

private void populateNames()

afterPopulateFullNames

protected void afterPopulateFullNames(Map<String, VariableMeta> fullNames,
 Set<String> parentVars)

populateFullNames

private void populateFullNames()

getFullNameMetas

public Map<String, VariableMeta> getFullNameMetas()

getStringSegements

public AviatorEvaluatorInstance.StringSegments getStringSegements(String lexeme,
 int lineNo)

newEnv

public Map<String,Object> newEnv(Object... args)

Description copied from interface: Expression

Created a faster env map(compare variable names by reference).The arguments should be a sequence of pair invalid input: '<'String, Object>.

Specified by:

newEnv in interface Expression

Parameters:

args -

Returns:

an env map

executeDirectly

public abstract Object executeDirectly(Map<String,Object> env)

execute

public Object execute(Map<String,Object> map)

Description copied from interface: Expression

Execute an expression with an environment, returns the result.

Specified by:

execute in interface Expression

Parameters:

map - Binding variable environment

Returns:

the result of execution

execute

protected Object execute(Map<String,Object> map,
 boolean checkExecutionTimeout)

setFuncsArgs

protected void setFuncsArgs(Map<Integer, List<FunctionArgument>> funcsArgs)

getCompileEnv

public Env getCompileEnv()

setCompileEnv

protected void setCompileEnv(Env compileEnv)

getExpression

public String getExpression()

Returns the expression string when turn on Options.TRACE_EVAL option, else returns null.

Returns:

expression in string.

setExpression

protected void setExpression(String expression)

addSymbol

public String addSymbol(String name)

Description copied from interface: Expression

Adds the specified symbol to the symbol table and returns a reference to the unique symbol. If the symbol already exists, the previous symbol reference is returned instead, in order guarantee that symbol references remain unique.

Specified by:

addSymbol in interface Expression

Parameters:

name - The symbol name.

execute

public Object execute()

Description copied from interface: Expression

Execute an expression with an empty environment, returns the result.

Specified by:

execute in interface Expression

Returns:

the result of execution

getVariableFullNames

public List<String> getVariableFullNames()

Description copied from interface: Expression

Returns this expression's all uninitialized global variable full names(contains dot) in order when using AviatorEvaluator.EVAL mode, otherwise returns an empty list.

Specified by:

getVariableFullNames in interface Expression

Returns:

getVars

public List<VariableMeta> getVars()

getVariableNames

public List<String> getVariableNames()

Description copied from interface: Expression

Returns this expression's all uninitialized global variable names in order when using AviatorEvaluator.EVAL mode, otherwise returns an empty list.

Specified by:

getVariableNames in interface Expression

Returns:

See Also:

• AviatorEvaluator.EVAL

newEnv

protected Env newEnv(Map<String,Object> map,
 boolean direct,
 boolean checkExecutionTimeout)

genTopEnv

protected Env genTopEnv(Map<String,Object> map,
 boolean checkExecutionTimeout)

getExecutionStartNs

private long getExecutionStartNs(boolean checkExecutionTimeout)

newEnv

protected Env newEnv(Map<String,Object> map)

getFunctionNames

public List<String> getFunctionNames()

Description copied from interface: Expression

Returns the function names in the expression when using AviatorEvaluator.EVAL mode, otherwise returns an empty list.

Specified by:

getFunctionNames in interface Expression

Returns:

the function name list

populateFilteredFuncNames

private void populateFilteredFuncNames()

setFunctionNames

protected void setFunctionNames(List<String> functionNames)

getLambdaBootstraps

public Map<String, LambdaFunctionBootstrap> getLambdaBootstraps()

setLambdaBootstraps

protected void setLambdaBootstraps(Map<String, LambdaFunctionBootstrap> lambdaBootstraps)

newLambda

public LambdaFunction newLambda(Env env,
 String name)

customReadObject

public void customReadObject(ObjectInputStream input)
                      throws ClassNotFoundException,
IOException

Throws:

ClassNotFoundException

IOException

customWriteObject

public void customWriteObject(ObjectOutputStream output)
                       throws IOException

Throws:

IOException