java.lang.Object
- com.ibm.wala.classLoader.LanguageImpl
- - com.ibm.wala.classLoader.JavaLanguage

All Implemented Interfaces:

BytecodeLanguage, Language, Constants
```
public class JavaLanguage
extends LanguageImpl
implements BytecodeLanguage, Constants
```
The implementation of Language which defines Java semantics.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class JavaLanguage.JavaInstructionFactory

Field Summary
- Fields inherited from interface com.ibm.wala.shrikeBT.Constants
  ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, CONSTANT_Class, CONSTANT_Double, CONSTANT_FieldRef, CONSTANT_Float, CONSTANT_Integer, CONSTANT_InterfaceMethodRef, CONSTANT_InvokeDynamic, CONSTANT_Long, CONSTANT_MethodHandle, CONSTANT_MethodRef, CONSTANT_MethodType, CONSTANT_NameAndType, CONSTANT_String, CONSTANT_Utf8, indexedTypes, indexedTypes_T, MAYBE, NO, OP_aaload, OP_aastore, OP_aconst_null, OP_aload, OP_aload_0, OP_aload_1, OP_aload_2, OP_aload_3, OP_anewarray, OP_areturn, OP_arraylength, OP_astore, OP_astore_0, OP_astore_1, OP_astore_2, OP_astore_3, OP_athrow, OP_baload, OP_bastore, OP_bipush, OP_caload, OP_castore, OP_checkcast, OP_d2f, OP_d2i, OP_d2l, OP_dadd, OP_daload, OP_dastore, OP_dcmpg, OP_dcmpl, OP_dconst_0, OP_dconst_1, OP_ddiv, OP_dload, OP_dload_0, OP_dload_1, OP_dload_2, OP_dload_3, OP_dmul, OP_dneg, OP_drem, OP_dreturn, OP_dstore, OP_dstore_0, OP_dstore_1, OP_dstore_2, OP_dstore_3, OP_dsub, OP_dup, OP_dup_x1, OP_dup_x2, OP_dup2, OP_dup2_x1, OP_dup2_x2, OP_f2d, OP_f2i, OP_f2l, OP_fadd, OP_faload, OP_fastore, OP_fcmpg, OP_fcmpl, OP_fconst_0, OP_fconst_1, OP_fconst_2, OP_fdiv, OP_fload, OP_fload_0, OP_fload_1, OP_fload_2, OP_fload_3, OP_fmul, OP_fneg, OP_frem, OP_freturn, OP_fstore, OP_fstore_0, OP_fstore_1, OP_fstore_2, OP_fstore_3, OP_fsub, OP_getfield, OP_getstatic, OP_goto, OP_goto_w, OP_i2b, OP_i2c, OP_i2d, OP_i2f, OP_i2l, OP_i2s, OP_iadd, OP_iaload, OP_iand, OP_iastore, OP_iconst_0, OP_iconst_1, OP_iconst_2, OP_iconst_3, OP_iconst_4, OP_iconst_5, OP_iconst_m1, OP_idiv, OP_if_acmpeq, OP_if_acmpne, OP_if_icmpeq, OP_if_icmpge, OP_if_icmpgt, OP_if_icmple, OP_if_icmplt, OP_if_icmpne, OP_ifeq, OP_ifge, OP_ifgt, OP_ifle, OP_iflt, OP_ifne, OP_ifnonnull, OP_ifnull, OP_iinc, OP_iload, OP_iload_0, OP_iload_1, OP_iload_2, OP_iload_3, OP_imul, OP_ineg, OP_instanceof, OP_invokedynamic, OP_invokeinterface, OP_invokespecial, OP_invokestatic, OP_invokevirtual, OP_ior, OP_irem, OP_ireturn, OP_ishl, OP_ishr, OP_istore, OP_istore_0, OP_istore_1, OP_istore_2, OP_istore_3, OP_isub, OP_iushr, OP_ixor, OP_jsr, OP_jsr_w, OP_l2d, OP_l2f, OP_l2i, OP_ladd, OP_laload, OP_land, OP_lastore, OP_lcmp, OP_lconst_0, OP_lconst_1, OP_ldc, OP_ldc_w, OP_ldc2_w, OP_ldiv, OP_lload, OP_lload_0, OP_lload_1, OP_lload_2, OP_lload_3, OP_lmul, OP_lneg, OP_lookupswitch, OP_lor, OP_lrem, OP_lreturn, OP_lshl, OP_lshr, OP_lstore, OP_lstore_0, OP_lstore_1, OP_lstore_2, OP_lstore_3, OP_lsub, OP_lushr, OP_lxor, OP_monitorenter, OP_monitorexit, OP_multianewarray, OP_new, OP_newarray, OP_nop, OP_pop, OP_pop2, OP_putfield, OP_putstatic, OP_ret, OP_return, OP_saload, OP_sastore, OP_sipush, OP_swap, OP_tableswitch, OP_wide, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TYPE_boolean, TYPE_boolean_index, TYPE_byte, TYPE_byte_index, TYPE_char, TYPE_char_index, TYPE_Class, TYPE_double, TYPE_double_index, TYPE_Error, TYPE_Exception, TYPE_float, TYPE_float_index, TYPE_int, TYPE_int_index, TYPE_long, TYPE_long_index, TYPE_MethodHandle, TYPE_MethodType, TYPE_null, TYPE_Object, TYPE_Object_index, TYPE_RuntimeException, TYPE_short, TYPE_short_index, TYPE_String, TYPE_Throwable, TYPE_unknown, TYPE_void, YES
- Fields inherited from interface com.ibm.wala.classLoader.Language
  JAVA

Constructor Summary

Constructors
Constructor Description

JavaLanguage()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Collection<TypeReference>`	`getAaStoreExceptions()`
`static Collection<TypeReference>`	`getArithmeticException()`
`static Collection<TypeReference>`	`getArrayAccessExceptions()`
`TypeReference[]`	`getArrayInterfaces()`	get the interfaces implemented by all arrays in the language
`static Collection<TypeReference>`	`getClassCastException()`
`static Collection<TypeReference>`	`getClassNotFoundException()`
`TypeReference`	`getConstantType(Object o)`	Given a Java constant o, return the appropriate language type to associate with the constant.
`static Collection<TypeReference>`	`getExceptionInInitializerError()`
`Collection<TypeReference>`	`getImplicitExceptionTypes(IInstruction pei)`
`MethodReference`	`getInvokeMethodReference(ClassLoaderReference loader, IInvokeInstruction instruction)`
`Object`	`getMetadataToken(Object value)`	Get the representation of the meta-data corresponding to value.
`Atom`	`getName()`	What is the name of the language?
`static Collection<TypeReference>`	`getNewArrayExceptions()`
`static Collection<TypeReference>`	`getNewScalarExceptions()`
`static Collection<TypeReference>`	`getNullPointerException()`
`TypeReference`	`getPointerType(TypeReference pointee)`
`PrimitiveType`	`getPrimitive(TypeReference reference)`	get the abstraction of a primitive type to be used for type inference
`TypeReference`	`getRootType()`	What is the root type in a type hierarchy for this language? e.g.
`TypeReference`	`getStringType()`
`TypeReference`	`getThrowableType()`	What is the root type of exceptions in this language? e.g.
`Collection<TypeReference>`	`inferInvokeExceptions(MethodReference target, IClassHierarchy cha)`	determine the set of possible exception types a call to target may throw
`SSAInstructionFactory`	`instructionFactory()`
`boolean`	`isBooleanType(TypeReference type)`
`boolean`	`isCharType(TypeReference type)`
`boolean`	`isDoubleType(TypeReference type)`
`boolean`	`isFloatType(TypeReference type)`
`boolean`	`isIntType(TypeReference type)`
`boolean`	`isLongType(TypeReference type)`
`boolean`	`isMetadataType(TypeReference type)`	Is t a "metadata" type for the language, i.e., a type describing some other type (e.g., java.lang.Class for Java)?
`boolean`	`isNullType(TypeReference type)`	Is t the type of the language's null value? Should return true if `t == null` (?).
`boolean`	`isStringType(TypeReference type)`
`boolean`	`isVoidType(TypeReference type)`
`TypeName`	`lookupPrimitiveType(String name)`	Given a source-level primitive type name, get the corresponding "low-level" type name, e.g., the corresponding character to use in a Java method descriptor

Methods inherited from class com.ibm.wala.classLoader.LanguageImpl
equals, getBaseLanguage, getDerivedLanguages, hashCode, registerDerivedLanguage, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.ibm.wala.classLoader.Language
getBaseLanguage, getDerivedLanguages, registerDerivedLanguage

- Constructor Detail
  - JavaLanguage
```
public JavaLanguage()
```
- Method Detail
  - getAaStoreExceptions
```
public static Collection<TypeReference> getAaStoreExceptions()
```
  - getArithmeticException
```
public static Collection<TypeReference> getArithmeticException()
```
  - getArrayAccessExceptions
```
public static Collection<TypeReference> getArrayAccessExceptions()
```
  - getClassCastException
```
public static Collection<TypeReference> getClassCastException()
```
  - getClassNotFoundException
```
public static Collection<TypeReference> getClassNotFoundException()
```
  - getNewArrayExceptions
```
public static Collection<TypeReference> getNewArrayExceptions()
```
  - getNewScalarExceptions
```
public static Collection<TypeReference> getNewScalarExceptions()
```
  - getNullPointerException
```
public static Collection<TypeReference> getNullPointerException()
```
  - getExceptionInInitializerError
```
public static Collection<TypeReference> getExceptionInInitializerError()
```
  - getName
```
public Atom getName()
```
    Description copied from interface: Language
    
    What is the name of the language?
    
    Specified by:
    
    getName in interface Language
  - getRootType
```
public TypeReference getRootType()
```
    Description copied from interface: Language
    
    What is the root type in a type hierarchy for this language? e.g. java.lang.Object in Java.
    
    Specified by:
    
    getRootType in interface Language
  - getThrowableType
```
public TypeReference getThrowableType()
```
    Description copied from interface: Language
    
    What is the root type of exceptions in this language? e.g. java.lang.Throwable in Java
    
    Specified by:
    
    getThrowableType in interface Language
  - getConstantType
```
public TypeReference getConstantType(Object o)
```
    Description copied from interface: Language
    
    Given a Java constant o, return the appropriate language type to associate with the constant. Possible types for o can be language dependent, but typically include Boolean, String, Integer, Float, etc.
    
    Specified by:
    
    getConstantType in interface Language
  - isNullType
```
public boolean isNullType(TypeReference type)
```
    Description copied from interface: Language
    
    Is t the type of the language's null value? Should return true if t == null (?).
    
    Specified by:
    
    isNullType in interface Language
  - getArrayInterfaces
```
public TypeReference[] getArrayInterfaces()
```
    Description copied from interface: Language
    
    get the interfaces implemented by all arrays in the language
    
    Specified by:
    
    getArrayInterfaces in interface Language
  - lookupPrimitiveType
```
public TypeName lookupPrimitiveType(String name)
```
    Description copied from interface: Language
    
    Given a source-level primitive type name, get the corresponding "low-level" type name, e.g., the corresponding character to use in a Java method descriptor
    
    Specified by:
    
    lookupPrimitiveType in interface Language
  - inferInvokeExceptions
```
public Collection<TypeReference> inferInvokeExceptions(MethodReference target,
                                                       IClassHierarchy cha)
                                                throws InvalidClassFileException
```
    Description copied from interface: Language
    
    determine the set of possible exception types a call to target may throw
    
    Specified by:
    
    inferInvokeExceptions in interface Language
    
    Returns:
    
    Collection, set of exception types a call to a declared target might throw.
    
    Throws:
    
    InvalidClassFileException
    
    IllegalArgumentException - if target is null
    
    IllegalArgumentException - if cha is null
  - getImplicitExceptionTypes
```
public Collection<TypeReference> getImplicitExceptionTypes(IInstruction pei)
```
    Specified by:
    
    getImplicitExceptionTypes in interface BytecodeLanguage
    
    Parameters:
    
    pei - a potentially-excepting instruction
    
    Returns:
    
    the exception types that pei may throw, independent of the class hierarchy. null if none. Notes
    
    this method will NOT return the exception type explicitly thrown by an athrow
    this method will NOT return the exception types that a called method may throw
    this method ignores OutOfMemoryError
    this method ignores linkage errors
    this method ignores IllegalMonitorState exceptions
    
    Throws:
    
    IllegalArgumentException - if pei is null
  - instructionFactory
```
public SSAInstructionFactory instructionFactory()
```
    Specified by:
    
    instructionFactory in interface Language
  - isDoubleType
```
public boolean isDoubleType(TypeReference type)
```
    Specified by:
    
    isDoubleType in interface Language
  - isFloatType
```
public boolean isFloatType(TypeReference type)
```
    Specified by:
    
    isFloatType in interface Language
  - isIntType
```
public boolean isIntType(TypeReference type)
```
    Specified by:
    
    isIntType in interface Language
  - isLongType
```
public boolean isLongType(TypeReference type)
```
    Specified by:
    
    isLongType in interface Language
  - isVoidType
```
public boolean isVoidType(TypeReference type)
```
    Specified by:
    
    isVoidType in interface Language
  - isMetadataType
```
public boolean isMetadataType(TypeReference type)
```
    Description copied from interface: Language
    
    Is t a "metadata" type for the language, i.e., a type describing some other type (e.g., java.lang.Class for Java)?
    
    Specified by:
    
    isMetadataType in interface Language
  - isStringType
```
public boolean isStringType(TypeReference type)
```
    Specified by:
    
    isStringType in interface Language
  - isBooleanType
```
public boolean isBooleanType(TypeReference type)
```
    Specified by:
    
    isBooleanType in interface Language
  - isCharType
```
public boolean isCharType(TypeReference type)
```
    Specified by:
    
    isCharType in interface Language
  - getMetadataToken
```
public Object getMetadataToken(Object value)
```
    Description copied from interface: Language
    
    Get the representation of the meta-data corresponding to value. For example, in Java, if value represents some type, the returned object should be the corresponding TypeReference. The returned object should be appropriate for use as the token in an SSALoadMetadataInstruction for the language
    
    Specified by:
    
    getMetadataToken in interface Language
  - getPointerType
```
public TypeReference getPointerType(TypeReference pointee)
                             throws UnsupportedOperationException
```
    Specified by:
    
    getPointerType in interface Language
    
    Throws:
    
    UnsupportedOperationException
  - getStringType
```
public TypeReference getStringType()
```
    Specified by:
    
    getStringType in interface Language
  - getPrimitive
```
public PrimitiveType getPrimitive(TypeReference reference)
```
    Description copied from interface: Language
    
    get the abstraction of a primitive type to be used for type inference
    
    Specified by:
    
    getPrimitive in interface Language
    
    See Also:
    
    TypeInference
  - getInvokeMethodReference
```
public MethodReference getInvokeMethodReference(ClassLoaderReference loader,
                                                IInvokeInstruction instruction)
```
    Specified by:
    
    getInvokeMethodReference in interface BytecodeLanguage

Class JavaLanguage

Nested Class Summary

Field Summary

Fields inherited from interface com.ibm.wala.shrikeBT.Constants

Fields inherited from interface com.ibm.wala.classLoader.Language

Constructor Summary

Method Summary

Methods inherited from class com.ibm.wala.classLoader.LanguageImpl

Methods inherited from class java.lang.Object

Methods inherited from interface com.ibm.wala.classLoader.Language

Constructor Detail

JavaLanguage

Method Detail

getAaStoreExceptions

getArithmeticException

getArrayAccessExceptions

getClassCastException

getClassNotFoundException

getNewArrayExceptions

getNewScalarExceptions

getNullPointerException

getExceptionInInitializerError

getName

getRootType

getThrowableType

getConstantType

isNullType

getArrayInterfaces

lookupPrimitiveType

inferInvokeExceptions

getImplicitExceptionTypes

instructionFactory

isDoubleType

isFloatType

isIntType

isLongType

isVoidType

isMetadataType

isStringType

isBooleanType

isCharType

getMetadataToken

getPointerType

getStringType

getPrimitive

getInvokeMethodReference