Package com.helix.core.bytecode

Class AsmBytecodeGenerator

java.lang.Object

com.helix.core.bytecode.AsmBytecodeGenerator

All Implemented Interfaces:

BytecodeGenerator, org.objectweb.asm.Opcodes

Direct Known Subclasses:

AsmGenerator

public class AsmBytecodeGenerator
extends Object
implements BytecodeGenerator, org.objectweb.asm.Opcodes

Low-level ASM bytecode generator for high-performance rule compilation with direct ONNX inference invocations.

Emits ultra-low-latency JVM bytecode instructions (ALOAD, LDC, INVOKESTATIC, FCMP/DCMP) bypassing reflection and dynamic dispatch, achieving sub-millisecond execution latency.

Field Summary

Fields inherited from interface org.objectweb.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_RECORD, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21, V9

Constructor Summary

Constructors

Constructor	Description
AsmBytecodeGenerator()
AsmBytecodeGenerator(boolean profilingEnabled)

Method Summary

Modifier and Type	Method	Description
CompiledRule	generate(Rule rule, ExpressionNode astRoot)	Generates an executable CompiledRule instance from a rule definition and its parsed AST.
byte[]	generateBytecode(Rule rule, ExpressionNode astRoot)	Generates raw JVM bytecode for the given rule without loading the class into the JVM.
byte[]	generateBytecode(String className, Rule rule, ExpressionNode astRoot)	Generates raw JVM bytecode for the specified class name.
boolean	isProfilingEnabled()
static boolean	resolveBoolean(ExecutionContext context, String name)	Runtime helper invoked from compiled bytecode to retrieve a boolean variable from context.
static double	resolveDouble(ExecutionContext context, String name)	Runtime helper invoked from compiled bytecode to retrieve a double variable from context.
static Object	resolveObject(ExecutionContext context, String name)	Runtime helper invoked from compiled bytecode to retrieve an object variable from context.

Methods inherited from class java.lang.Object

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

Constructor Details

AsmBytecodeGenerator

public AsmBytecodeGenerator()

AsmBytecodeGenerator

public AsmBytecodeGenerator(boolean profilingEnabled)

Method Details

isProfilingEnabled

public boolean isProfilingEnabled()

generateBytecode

public byte[] generateBytecode(Rule rule,
 ExpressionNode astRoot)
                        throws BytecodeGenerationException

Generates raw JVM bytecode for the given rule without loading the class into the JVM.

Parameters:

rule - rule definition

astRoot - AST expression tree

Returns:

raw class byte array

Throws:

BytecodeGenerationException - if generation fails

generateBytecode

public byte[] generateBytecode(String className,
 Rule rule,
 ExpressionNode astRoot)
                        throws BytecodeGenerationException

Generates raw JVM bytecode for the specified class name.

Parameters:

className - fully qualified class name to generate

rule - rule definition

astRoot - AST expression tree

Returns:

raw class byte array

Throws:

BytecodeGenerationException - if generation fails

generate

public CompiledRule generate(Rule rule,
 ExpressionNode astRoot)
                      throws BytecodeGenerationException

Description copied from interface: BytecodeGenerator

Generates an executable CompiledRule instance from a rule definition and its parsed AST.

Specified by:

generate in interface BytecodeGenerator

Parameters:

rule - raw rule definition metadata

astRoot - parsed root AST node

Returns:

compiled rule instance

Throws:

BytecodeGenerationException - if generation fails

resolveDouble

public static double resolveDouble(ExecutionContext context,
 String name)

Runtime helper invoked from compiled bytecode to retrieve a double variable from context.

resolveBoolean

public static boolean resolveBoolean(ExecutionContext context,
 String name)

Runtime helper invoked from compiled bytecode to retrieve a boolean variable from context.

resolveObject

public static Object resolveObject(ExecutionContext context,
 String name)

Runtime helper invoked from compiled bytecode to retrieve an object variable from context.