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

Author:

dennis

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FUNC_PARAMS_VAR
protected AviatorEvaluatorInstance	instance
protected Map<String, LambdaFunctionBootstrap>	lambdaBootstraps
protected String	sourceFile
protected SymbolTable	symbolTable
protected List<String>	varFullNames
protected List<String>	varNames

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()
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)
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

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

instance

protected transient AviatorEvaluatorInstance instance

symbolTable

protected SymbolTable symbolTable

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)

afterPopulateFullNames

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

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)

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

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