com.google.gwt.dev.js

Class JsUtils

java.lang.Object

com.google.gwt.dev.js.JsUtils

public class JsUtils
extends Object

Utils for JS AST.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JsUtils.InvocationStyle Invocation styles.

Method Summary

Modifier and Type	Method and Description
static JsExpression	createApplyInvocation(SourceInfo sourceInfo, com.google.gwt.dev.js.JsUtils.InvocationDescriptor invocationDescriptor)
static JsExpression	createAssignment(JsExpression lhs, JsExpression rhs)
static JsExpression	createAssignment(SourceInfo info, JsExpression lhs, JsExpression rhs)
static JsFunction	createBridge(JMethod method, JsName polyName, JsScope scope)
static JsExpression	createCallInvocationOrSuperPropertyAccess(SourceInfo sourceInfo, com.google.gwt.dev.js.JsUtils.InvocationDescriptor invocationDescriptor)
static JsExpression	createCommaExpression(JsExpression... expressions)
static JsExpression	createDirectInvocationOrPropertyAccess(SourceInfo sourceInfo, com.google.gwt.dev.js.JsUtils.InvocationDescriptor invocationDescriptor)
static JsFunction	createEmptyFunctionLiteral(SourceInfo info, JsScope scope, JsName name)
static JsExpression	createInvocationOrPropertyAccess(JsUtils.InvocationStyle invocationStyle, SourceInfo sourceInfo, JMethod method, JsExpression instance, JsNameRef reference, List<JsExpression> args)
static JsExpression	createQualifiedNameRef(SourceInfo info, JsExpression base, String... names)
static JsNameRef	createQualifiedNameRef(SourceInfo info, JsName... names)
static JsNameRef	createQualifiedNameRef(String namespace, SourceInfo sourceInfo) Given a string qualifier such as 'foo.bar.Baz', returns a chain of JsNameRef's representing this qualifier.
static JsExpression	extractExpression(JsStatement stmt) Attempts to extract a single expression from a given statement and returns it.
static JsName	getJsNameForField(JavaToJavaScriptMap jjsmap, JProgram jprogram, String indexedMethodName)
static JsName	getJsNameForMethod(JavaToJavaScriptMap jjsmap, JProgram jprogram, String indexedMethodName)
static boolean	isEmpty(JsStatement stmt)
static JsFunction	isExecuteOnce(JsInvocation invocation) Given a JsInvocation, determine if it is invoking a JsFunction that is specified to be executed only once during the program's lifetime.
static JsFunction	isFunction(JsExpression e) Given an expression, determine if it is a JsNameRef that refers to a statically-defined JsFunction.
static JsFunction	isFunctionDeclaration(JsStatement stmt) If the statement is a JsExprStmt that declares a function with no other side effects, returns that function; otherwise null.
static boolean	isValidJsIdentifier(String name) A JavaScript identifier contains only letters, numbers, _, $ and does not begin with a number.
static boolean	isValidJsQualifiedName(String name)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Method Detail

isExecuteOnce

public static JsFunction isExecuteOnce(JsInvocation invocation)

Given a JsInvocation, determine if it is invoking a JsFunction that is specified to be executed only once during the program's lifetime.

isFunction

public static JsFunction isFunction(JsExpression e)

Given an expression, determine if it is a JsNameRef that refers to a statically-defined JsFunction.

createAssignment

public static JsExpression createAssignment(JsExpression lhs,
                                            JsExpression rhs)

createAssignment

public static JsExpression createAssignment(SourceInfo info,
                                            JsExpression lhs,
                                            JsExpression rhs)

createBridge

public static JsFunction createBridge(JMethod method,
                                      JsName polyName,
                                      JsScope scope)

createCommaExpression

public static JsExpression createCommaExpression(JsExpression... expressions)

createEmptyFunctionLiteral

public static JsFunction createEmptyFunctionLiteral(SourceInfo info,
                                                    JsScope scope,
                                                    JsName name)

createQualifiedNameRef

public static JsExpression createQualifiedNameRef(SourceInfo info,
                                                  JsExpression base,
                                                  String... names)

createQualifiedNameRef

public static JsNameRef createQualifiedNameRef(String namespace,
                                               SourceInfo sourceInfo)

Given a string qualifier such as 'foo.bar.Baz', returns a chain of JsNameRef's representing this qualifier.

createQualifiedNameRef

public static JsNameRef createQualifiedNameRef(SourceInfo info,
                                               JsName... names)

createApplyInvocation

public static JsExpression createApplyInvocation(SourceInfo sourceInfo,
                                                 com.google.gwt.dev.js.JsUtils.InvocationDescriptor invocationDescriptor)

createDirectInvocationOrPropertyAccess

public static JsExpression createDirectInvocationOrPropertyAccess(SourceInfo sourceInfo,
                                                                  com.google.gwt.dev.js.JsUtils.InvocationDescriptor invocationDescriptor)

createCallInvocationOrSuperPropertyAccess

public static JsExpression createCallInvocationOrSuperPropertyAccess(SourceInfo sourceInfo,
                                                                     com.google.gwt.dev.js.JsUtils.InvocationDescriptor invocationDescriptor)

createInvocationOrPropertyAccess

public static JsExpression createInvocationOrPropertyAccess(JsUtils.InvocationStyle invocationStyle,
                                                            SourceInfo sourceInfo,
                                                            JMethod method,
                                                            JsExpression instance,
                                                            JsNameRef reference,
                                                            List<JsExpression> args)

extractExpression

public static JsExpression extractExpression(JsStatement stmt)

Attempts to extract a single expression from a given statement and returns it. If no such expression exists, returns null.

getJsNameForMethod

public static JsName getJsNameForMethod(JavaToJavaScriptMap jjsmap,
                                        JProgram jprogram,
                                        String indexedMethodName)

getJsNameForField

public static JsName getJsNameForField(JavaToJavaScriptMap jjsmap,
                                       JProgram jprogram,
                                       String indexedMethodName)

isEmpty

public static boolean isEmpty(JsStatement stmt)

isFunctionDeclaration

public static JsFunction isFunctionDeclaration(JsStatement stmt)

If the statement is a JsExprStmt that declares a function with no other side effects, returns that function; otherwise null.

isValidJsIdentifier

public static boolean isValidJsIdentifier(String name)

A JavaScript identifier contains only letters, numbers, _, $ and does not begin with a number. There are actually other valid identifiers, such as ones that contain escaped Unicode characters but we disallow those for the time being.

isValidJsQualifiedName

public static boolean isValidJsQualifiedName(String name)