com.google.javascript.jscomp

Interface CodingConvention

All Superinterfaces:

Serializable

All Known Implementing Classes:

ChromeCodingConvention, ClosureCodingConvention, CodingConventions.Proxy, GoogleCodingConvention

public interface CodingConvention
extends Serializable

CodingConvention defines a set of hooks to customize the behavior of the Compiler for a specific team/company.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CodingConvention.AssertionFunctionSpec A function that will throw an exception when either: -One or more of its parameters evaluate to false.
static class	CodingConvention.Bind Bind class
static class	CodingConvention.Cache Cache class
static class	CodingConvention.DelegateRelationship Delegates provides a mechanism and structure for identifying where classes can call out to optional code to augment their functionality.
static class	CodingConvention.ObjectLiteralCast An object literal cast provides a mechanism to cast object literals to other types without a warning.
static class	CodingConvention.SubclassRelationship Record subclass relations
static class	CodingConvention.SubclassType Specify the kind of inheritance

Method Summary

Modifier and Type	Method and Description
void	applyDelegateRelationship(ObjectType delegateSuperclass, ObjectType delegateBase, ObjectType delegator, FunctionType delegateProxy, FunctionType findDelegate) In many JS libraries, the function that creates a delegate relationship also adds properties to the delegator and delegate base.
void	applySingletonGetterNew(RawNominalType rawType, JSType getInstanceType, JSType instanceType)
void	applySingletonGetterOld(FunctionType functionType, FunctionType getterType, ObjectType objectType) In many JS libraries, the function that adds a singleton getter to a class adds properties to the class.
void	applySubclassRelationship(FunctionType parentCtor, FunctionType childCtor, CodingConvention.SubclassType type) In many JS libraries, the function that produces inheritance also adds properties to the superclass and/or subclass.
boolean	blockRenamingForProperty(String name) Check whether the property name is eligible for renaming.
void	checkForCallingConventionDefiningCalls(Node n, Map<String,String> delegateCallingConventions) Checks for function calls that set the calling conventions on delegate methods.
void	defineDelegateProxyPrototypeProperties(JSTypeRegistry registry, StaticTypedScope<JSType> scope, List<ObjectType> delegateProxyPrototypes, Map<String,String> delegateCallingConventions) Defines the delegate proxy prototype properties.
CodingConvention.Cache	describeCachingCall(Node node) Builds a CodingConvention.Cache instance from the given call node and returns that instance, or null if the Node does not resemble a cache utility call.
CodingConvention.Bind	describeFunctionBind(Node n) A Bind instance or null.
CodingConvention.Bind	describeFunctionBind(Node n, boolean callerChecksTypes, boolean iCheckTypes) A Bind instance or null.
String	extractClassNameIfProvide(Node node, Node parent) Convenience method for determining provided dependencies amongst different JS scripts.
String	extractClassNameIfRequire(Node node, Node parent) Convenience method for determining required dependencies amongst different JS scripts.
boolean	extractIsModuleFile(Node node, Node parent) Convenience method for determining if the node indicates the file is a "module" file (a file whose top level symbols are not in global scope).
String	getAbstractMethodName() Function name for abstract methods.
Collection<CodingConvention.AssertionFunctionSpec>	getAssertionFunctions() Returns the set of AssertionFunction.
CodingConvention.SubclassRelationship	getClassesDefinedByCall(Node callNode) Checks if the given method defines a subclass relationship, and if it does, returns information on that relationship.
CodingConvention.DelegateRelationship	getDelegateRelationship(Node callNode)
String	getDelegateSuperclassName()
String	getExportPropertyFunction() Function name used when exporting properties.
String	getExportSymbolFunction() Function name used when exporting symbols.
String	getGlobalObject() Gets the name of the global object.
Collection<String>	getIndirectlyDeclaredProperties() Gets a collection of all properties that are defined indirectly on global objects.
CodingConvention.ObjectLiteralCast	getObjectLiteralCast(Node callNode) Checks if the given method performs a object literal cast, and if it does, returns information on the cast.
String	getPackageName(StaticSourceFile source)
String	getSingletonGetterClassName(Node callNode) Checks if the given method defines a singleton getter, and if it does, returns the name of the class with the singleton getter.
boolean	hasPrivacyConvention() Whether this CodingConvention includes a convention for what private names should look like.
List<String>	identifyTypeDeclarationCall(Node n) Checks if the given CALL node is forward-declaring any types, and returns the name of the types if it is.
boolean	isAliasingGlobalThis(Node n) Whether this statement is creating an alias of the global object
boolean	isClassFactoryCall(Node callNode) Checks if the given method is a call to a class factory, such a factory returns a unique class.
boolean	isConstant(String variableName) This checks whether a given variable name, such as a name in all-caps should be treated as if it had the @const annotation.
boolean	isConstantKey(String keyName) This checks whether a given key of an object literal, such as a name in all-caps should be treated as if it had the @const annotation.
boolean	isExported(String name) Should be isExported(name, true) || isExported(name, false);
boolean	isExported(String name, boolean local) Checks whether a global variable or function name should be treated as exported, or externally referenceable.
boolean	isFunctionCallThatAlwaysThrows(Node n) Used by CheckMissingReturn.
boolean	isInlinableFunction(Node n)
boolean	isOptionalParameter(Node parameter) This checks whether a given parameter name should be treated as an optional parameter as far as type checking or function call arg count checking is concerned.
boolean	isPrivate(String name) Checks whether a name should be considered private.
boolean	isPropertyRenameFunction(String name) Whether this CALL function is returning the string name for a property, but allows renaming.
boolean	isPropertyTestFunction(Node call) Whether this CALL function is testing for the existence of a property.
boolean	isPrototypeAlias(Node getProp) Whether this GETPROP node is an alias for an object prototype.
boolean	isSuperClassReference(String propertyName) Returns true if passed a string referring to the superclass.
boolean	isValidEnumKey(String key) This checks that a given key may be used as a key for an enum.
boolean	isVarArgsParameter(Node parameter) This checks whether a given parameter should be treated as a marker for a variable argument list function.

Method Detail

isConstant

boolean isConstant(String variableName)

This checks whether a given variable name, such as a name in all-caps should be treated as if it had the @const annotation.

Parameters:

variableName - potentially constant variable name

Returns:

true if the name should be treated as a constant.

isConstantKey

boolean isConstantKey(String keyName)

This checks whether a given key of an object literal, such as a name in all-caps should be treated as if it had the @const annotation.

isValidEnumKey

boolean isValidEnumKey(String key)

This checks that a given key may be used as a key for an enum.

Parameters:

key - the potential key to an enum

Returns:

true if the key may be used as an enum key, false otherwise

isOptionalParameter

boolean isOptionalParameter(Node parameter)

This checks whether a given parameter name should be treated as an optional parameter as far as type checking or function call arg count checking is concerned. Note that an optional function parameter may be declared as a simple type and is automatically converted to a union of the declared type and Undefined.

Parameters:

parameter - The parameter's node.

Returns:

true if the parameter should be treated as an optional parameter.

isVarArgsParameter

boolean isVarArgsParameter(Node parameter)

This checks whether a given parameter should be treated as a marker for a variable argument list function. A VarArgs parameter must be the last parameter in a function declaration.

Parameters:

parameter - The parameter's node.

Returns:

true if the parameter should be treated as a variable length parameter.

isFunctionCallThatAlwaysThrows

boolean isFunctionCallThatAlwaysThrows(Node n)

Used by CheckMissingReturn. When a function call always throws an error, it can be the last stm of a block and we don't warn about missing return.

isExported

boolean isExported(String name,
                   boolean local)

Checks whether a global variable or function name should be treated as exported, or externally referenceable.

Parameters:

name - A global variable or function name.

local - true if the name is a local variable.

Returns:

true if the name should be considered exported.

isExported

boolean isExported(String name)

Should be isExported(name, true) || isExported(name, false);

blockRenamingForProperty

boolean blockRenamingForProperty(String name)

Check whether the property name is eligible for renaming. This method will not block removal or collapsing of the property; it will just block renaming if the property is not optimized away.

Parameters:

name - A property name.

Returns:

true if the name can not be renamed.

getPackageName

String getPackageName(StaticSourceFile source)

Returns:

the package name for the given source file, or null if no package name is known.

isPrivate

boolean isPrivate(String name)

Checks whether a name should be considered private. Private global variables and functions can only be referenced within the source file in which they are declared. Private properties and methods should only be accessed by the class that defines them.

Parameters:

name - The name of a global variable or function, or a method or property.

Returns:

true if the name should be considered private.

hasPrivacyConvention

boolean hasPrivacyConvention()

Whether this CodingConvention includes a convention for what private names should look like.

getClassesDefinedByCall

CodingConvention.SubclassRelationship getClassesDefinedByCall(Node callNode)

Checks if the given method defines a subclass relationship, and if it does, returns information on that relationship. By default, always returns null. Meant to be overridden by subclasses.

Parameters:

callNode - A CALL node.

isClassFactoryCall

boolean isClassFactoryCall(Node callNode)

Checks if the given method is a call to a class factory, such a factory returns a unique class.

Parameters:

callNode - A CALL node.

isSuperClassReference

boolean isSuperClassReference(String propertyName)

Returns true if passed a string referring to the superclass. The string will usually be from the string node at the right of a GETPROP, e.g. this.superClass_.

extractIsModuleFile

boolean extractIsModuleFile(Node node,
                            Node parent)

Convenience method for determining if the node indicates the file is a "module" file (a file whose top level symbols are not in global scope).

extractClassNameIfProvide

String extractClassNameIfProvide(Node node,
                                 Node parent)

Convenience method for determining provided dependencies amongst different JS scripts.

extractClassNameIfRequire

String extractClassNameIfRequire(Node node,
                                 Node parent)

Convenience method for determining required dependencies amongst different JS scripts.

getExportPropertyFunction

String getExportPropertyFunction()

Function name used when exporting properties. Signature: fn(object, publicName, symbol).

Returns:

function name.

getExportSymbolFunction

String getExportSymbolFunction()

Function name used when exporting symbols. Signature: fn(publicPath, object).

Returns:

function name.

identifyTypeDeclarationCall

List<String> identifyTypeDeclarationCall(Node n)

Checks if the given CALL node is forward-declaring any types, and returns the name of the types if it is.

applySubclassRelationship

void applySubclassRelationship(FunctionType parentCtor,
                               FunctionType childCtor,
                               CodingConvention.SubclassType type)

In many JS libraries, the function that produces inheritance also adds properties to the superclass and/or subclass.

getAbstractMethodName

String getAbstractMethodName()

Function name for abstract methods. An abstract method can be assigned to an interface method instead of an function expression in order to avoid linter warnings produced by assigning a function without a return value where a return value is expected.

Returns:

function name.

getSingletonGetterClassName

String getSingletonGetterClassName(Node callNode)

Checks if the given method defines a singleton getter, and if it does, returns the name of the class with the singleton getter. By default, always returns null. Meant to be overridden by subclasses. addSingletonGetter needs a coding convention because in the general case, it can't be inlined. The function inliner sees that it creates an alias to the given class in an inner closure, and bails out.

Parameters:

callNode - A CALL node.

applySingletonGetterOld

void applySingletonGetterOld(FunctionType functionType,
                             FunctionType getterType,
                             ObjectType objectType)

In many JS libraries, the function that adds a singleton getter to a class adds properties to the class.

applySingletonGetterNew

void applySingletonGetterNew(RawNominalType rawType,
                             JSType getInstanceType,
                             JSType instanceType)

isInlinableFunction

boolean isInlinableFunction(Node n)

Returns:

Whether the function is inlinable by convention.

getDelegateRelationship

CodingConvention.DelegateRelationship getDelegateRelationship(Node callNode)

Returns:

the delegate relationship created by the call or null.

applyDelegateRelationship

void applyDelegateRelationship(ObjectType delegateSuperclass,
                               ObjectType delegateBase,
                               ObjectType delegator,
                               FunctionType delegateProxy,
                               FunctionType findDelegate)

In many JS libraries, the function that creates a delegate relationship also adds properties to the delegator and delegate base.

getDelegateSuperclassName

String getDelegateSuperclassName()

Returns:

the name of the delegate superclass.

checkForCallingConventionDefiningCalls

void checkForCallingConventionDefiningCalls(Node n,
                                            Map<String,String> delegateCallingConventions)

Checks for function calls that set the calling conventions on delegate methods.

defineDelegateProxyPrototypeProperties

void defineDelegateProxyPrototypeProperties(JSTypeRegistry registry,
                                            StaticTypedScope<JSType> scope,
                                            List<ObjectType> delegateProxyPrototypes,
                                            Map<String,String> delegateCallingConventions)

Defines the delegate proxy prototype properties. Their types depend on properties of the delegate base methods.

Parameters:

delegateProxyPrototypes - List of delegate proxy prototypes.

getGlobalObject

String getGlobalObject()

Gets the name of the global object.

isAliasingGlobalThis

boolean isAliasingGlobalThis(Node n)

Whether this statement is creating an alias of the global object

describeFunctionBind

CodingConvention.Bind describeFunctionBind(Node n)

A Bind instance or null.

describeFunctionBind

CodingConvention.Bind describeFunctionBind(Node n,
                                           boolean callerChecksTypes,
                                           boolean iCheckTypes)

A Bind instance or null. When seeing an expression exp1.bind(recv, arg1, ...); we only know that it's a function bind if exp1 has type function. W/out type info, exp1 has certainly a function type only if it's a function literal. If (the old) type checking has already happened, exp1's type is attached to the AST node. When iCheckTypes is true, describeFunctionBind looks for that type. The new type inference does not yet attach types to nodes, but we can still use type information in describeFunctionBind by passing true for callerChecksTypes.

Parameters:

callerChecksTypes - Trust that the caller of this method has verified that the bound node has a function type.

iCheckTypes - Check that the bound node has a function type.

describeCachingCall

CodingConvention.Cache describeCachingCall(Node node)

Builds a CodingConvention.Cache instance from the given call node and returns that instance, or null if the Node does not resemble a cache utility call.

This should match calls to a cache utility method. This type of node is specially considered for side-effects since conventionally storing something on a cache object would be seen as a side-effect.

isPropertyTestFunction

boolean isPropertyTestFunction(Node call)

Whether this CALL function is testing for the existence of a property.

isPrototypeAlias

boolean isPrototypeAlias(Node getProp)

Whether this GETPROP node is an alias for an object prototype.

isPropertyRenameFunction

boolean isPropertyRenameFunction(String name)

Whether this CALL function is returning the string name for a property, but allows renaming.

getObjectLiteralCast

CodingConvention.ObjectLiteralCast getObjectLiteralCast(Node callNode)

Checks if the given method performs a object literal cast, and if it does, returns information on the cast. By default, always returns null. Meant to be overridden by subclasses.

Parameters:

callNode - A CALL node.

getIndirectlyDeclaredProperties

Collection<String> getIndirectlyDeclaredProperties()

Gets a collection of all properties that are defined indirectly on global objects. (For example, Closure defines superClass_ in the goog.inherits call).

getAssertionFunctions

Collection<CodingConvention.AssertionFunctionSpec> getAssertionFunctions()

Returns the set of AssertionFunction.