org.elasticsearch.painless

Class MethodWriter

java.lang.Object

GeneratorAdapter

org.elasticsearch.painless.MethodWriter

public final class MethodWriter
extends GeneratorAdapter

Extension of GeneratorAdapter with some utility methods.

Set of methods used during the writing phase of compilation shared by the nodes of the Painless tree.

Constructor Summary

Constructors

Constructor and Description
MethodWriter(int access, Method method, ClassVisitor cw, java.util.BitSet statements, CompilerSettings settings)

Method Summary

Modifier and Type	Method and Description
void	box(org.objectweb.asm.Type type) Proxy the box method to use valueOf instead to ensure that the modern boxing methods are used.
void	endMethod()
void	invokeDefCall(java.lang.String name, org.objectweb.asm.Type methodType, int flavor, java.lang.Object... params) Writes a dynamic call for a def method.
void	visitEnd()
void	writeAppendStrings(Definition.Type type)
void	writeBinaryInstruction(Location location, Definition.Type type, Operation operation) Writes a static binary instruction
void	writeBranch(Label tru, Label fals)
void	writeCast(Definition.Cast cast)
void	writeDebugInfo(Location location) Encodes the offset into the line number table as offset + 1.
void	writeDup(int size, int xsize)
void	writeDynamicBinaryInstruction(Location location, Definition.Type returnType, Definition.Type lhs, Definition.Type rhs, Operation operation, int flags) Writes a dynamic binary instruction: returnType, lhs, and rhs can be different
void	writeLoopCounter(int slot, int count, Location location)
int	writeNewStrings() Starts a new string concat.
void	writePop(int size)
void	writeStatementOffset(Location location) Marks a new statement boundary.
void	writeToStrings()

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodWriter

public MethodWriter(int access,
                    Method method,
                    ClassVisitor cw,
                    java.util.BitSet statements,
                    CompilerSettings settings)

Method Detail

writeStatementOffset

public void writeStatementOffset(Location location)

Marks a new statement boundary.

This is invoked for each statement boundary (leaf S* nodes).

writeDebugInfo

public void writeDebugInfo(Location location)

Encodes the offset into the line number table as offset + 1.

This is invoked before instructions that can hit exceptions.

writeLoopCounter

public void writeLoopCounter(int slot,
                             int count,
                             Location location)

writeCast

public void writeCast(Definition.Cast cast)

box

public void box(org.objectweb.asm.Type type)

Proxy the box method to use valueOf instead to ensure that the modern boxing methods are used.

writeBranch

public void writeBranch(Label tru,
                        Label fals)

writeNewStrings

public int writeNewStrings()

Starts a new string concat.

Returns:

the size of arguments pushed to stack (the object that does string concats, e.g. a StringBuilder)

writeAppendStrings

public void writeAppendStrings(Definition.Type type)

writeToStrings

public void writeToStrings()

writeDynamicBinaryInstruction

public void writeDynamicBinaryInstruction(Location location,
                                          Definition.Type returnType,
                                          Definition.Type lhs,
                                          Definition.Type rhs,
                                          Operation operation,
                                          int flags)

Writes a dynamic binary instruction: returnType, lhs, and rhs can be different

writeBinaryInstruction

public void writeBinaryInstruction(Location location,
                                   Definition.Type type,
                                   Operation operation)

Writes a static binary instruction

writeDup

public void writeDup(int size,
                     int xsize)

writePop

public void writePop(int size)

endMethod

public void endMethod()

visitEnd

public void visitEnd()

invokeDefCall

public void invokeDefCall(java.lang.String name,
                          org.objectweb.asm.Type methodType,
                          int flavor,
                          java.lang.Object... params)

Writes a dynamic call for a def method.

Parameters:

name - method name

methodType - callsite signature

flavor - type of call

params - flavor-specific parameters