net.janino
Class Java.BlockStatement

java.lang.Object
  |
  +--net.janino.Java.Located
        |
        +--net.janino.Java.BlockStatement

All Implemented Interfaces:

Java.Locatable

Direct Known Subclasses:

Java.Statement

Enclosing class:

Java

public abstract static class Java.BlockStatement

extends net.janino.Java.Located

Base of all statements that can appear in a block.

Constructor Summary

Java.BlockStatement(Scanner.Location location)

Method Summary

short	addConstantFloatInfo(float value)
short	addConstantIntegerInfo(int value)
short	addConstantStringInfo(java.lang.String value)
short	allocateLocalVariable(short size)
abstract boolean	compile()
void	compileError(java.lang.String message)
ClassFile.CodeAttribute	createDummyCodeAttribute()
abstract boolean	generatesCode() Check whether invocation of compile() would generate more than zero code bytes.
Scanner.Location	getLocation()
abstract void	leave(IClass optionalStackValueType) Clean up the statement context.
ClassFile.CodeAttribute.Inserter	newInserter()
ClassFile.CodeAttribute.Offset	newOffset()
ClassFile.CodeAttribute.Offset	newUnsetOffset()
void	popInserter()
void	pushInserter(ClassFile.CodeAttribute.Inserter ins)
void	restoreLocalVariables()
void	saveLocalVariables()
void	throwParseException(java.lang.String message)
void	write(byte[] b)
void	writeBranch(int opcode, ClassFile.CodeAttribute.Offset dst)
void	writeByte(int v)
void	writeConstantClassInfo(java.lang.String descriptor)
void	writeConstantDoubleInfo(double value)
void	writeConstantFieldrefInfo(java.lang.String classFD, java.lang.String fieldName, java.lang.String fieldFD)
void	writeConstantFloatInfo(float value)
void	writeConstantIntegerInfo(int value)
void	writeConstantInterfaceMethodrefInfo(java.lang.String classFD, java.lang.String methodName, java.lang.String methodMD)
void	writeConstantLongInfo(long value)
void	writeConstantMethodrefInfo(java.lang.String classFD, java.lang.String methodName, java.lang.String methodMD)
void	writeConstantStringInfo(java.lang.String value)
void	writeInt(int v)
void	writeOffset(ClassFile.CodeAttribute.Offset src, ClassFile.CodeAttribute.Offset dst)
void	writeOpcode(int opcode)
void	writeShort(int v)

Methods inherited from class java.lang.Object

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

Constructor Detail

Java.BlockStatement

public Java.BlockStatement(Scanner.Location location)

Method Detail

generatesCode

public abstract boolean generatesCode()
                               throws Java.CompileException

Check whether invocation of compile() would generate more than zero code bytes.

compile

public abstract boolean compile()
                         throws Java.CompileException

Returns:

false if this statement cannot complete normally (14.20)

leave

public abstract void leave(IClass optionalStackValueType)

Clean up the statement context. This is currently relevant for "try ... catch ... finally" statements (execute "finally" clause) and "synchronized" statements (monitorexit).

Statements like "return", "break", "continue" must call this method for all the statements they terminate.

Notice: If optionalStackValueType is null, then the operand stack is empty; otherwise exactly one operand with that type is on the stack. This information is vital to implementations of leave(IClass) that require a specific operand stack state (e.g. an empty operand stack for JSR).

createDummyCodeAttribute

public ClassFile.CodeAttribute createDummyCodeAttribute()

getLocation

public Scanner.Location getLocation()

Specified by:

getLocation in interface Java.Locatable

throwParseException

public void throwParseException(java.lang.String message)
                         throws Parser.ParseException

Specified by:

throwParseException in interface Java.Locatable

compileError

public void compileError(java.lang.String message)
                  throws Java.CompileException

Specified by:

compileError in interface Java.Locatable

write

public void write(byte[] b)

writeByte

public void writeByte(int v)

writeInt

public void writeInt(int v)

writeShort

public void writeShort(int v)

writeOpcode

public void writeOpcode(int opcode)

writeBranch

public void writeBranch(int opcode,
                        ClassFile.CodeAttribute.Offset dst)

writeOffset

public void writeOffset(ClassFile.CodeAttribute.Offset src,
                        ClassFile.CodeAttribute.Offset dst)

writeConstantClassInfo

public void writeConstantClassInfo(java.lang.String descriptor)

writeConstantFieldrefInfo

public void writeConstantFieldrefInfo(java.lang.String classFD,
                                      java.lang.String fieldName,
                                      java.lang.String fieldFD)

writeConstantMethodrefInfo

public void writeConstantMethodrefInfo(java.lang.String classFD,
                                       java.lang.String methodName,
                                       java.lang.String methodMD)

writeConstantInterfaceMethodrefInfo

public void writeConstantInterfaceMethodrefInfo(java.lang.String classFD,
                                                java.lang.String methodName,
                                                java.lang.String methodMD)

writeConstantStringInfo

public void writeConstantStringInfo(java.lang.String value)

addConstantStringInfo

public short addConstantStringInfo(java.lang.String value)

writeConstantIntegerInfo

public void writeConstantIntegerInfo(int value)

addConstantIntegerInfo

public short addConstantIntegerInfo(int value)

writeConstantFloatInfo

public void writeConstantFloatInfo(float value)

addConstantFloatInfo

public short addConstantFloatInfo(float value)

writeConstantLongInfo

public void writeConstantLongInfo(long value)

writeConstantDoubleInfo

public void writeConstantDoubleInfo(double value)

newOffset

public ClassFile.CodeAttribute.Offset newOffset()

newUnsetOffset

public ClassFile.CodeAttribute.Offset newUnsetOffset()

newInserter

public ClassFile.CodeAttribute.Inserter newInserter()

pushInserter

public void pushInserter(ClassFile.CodeAttribute.Inserter ins)

popInserter

public void popInserter()

saveLocalVariables

public void saveLocalVariables()

restoreLocalVariables

public void restoreLocalVariables()

allocateLocalVariable

public short allocateLocalVariable(short size)