• Home
• com.github.keyboardDrummer
• modularlanguages_sjs0.6_2.13
• 0.1.6
• source code
• GreaterThanInstructionDelta.scala

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

miksilo.modularLanguages.deltas.bytecode.extraBooleanInstructions.GreaterThanInstructionDelta.scala Maven / Gradle / Ivy

package miksilo.modularLanguages.deltas.bytecode.extraBooleanInstructions

import miksilo.modularLanguages.core.node.{Node, NodeShape}
import miksilo.modularLanguages.core.deltas.Contract
import miksilo.languageServer.core.language.Language
import miksilo.modularLanguages.deltas.bytecode.attributes.CodeAttributeDelta
import miksilo.modularLanguages.deltas.bytecode.coreInstructions.integers.SmallIntegerConstantDelta
import miksilo.modularLanguages.deltas.bytecode.coreInstructions.integers.integerCompare.IfIntegerCompareGreaterOrEqualDelta
import miksilo.modularLanguages.deltas.bytecode.simpleBytecode.{InferredStackFrames, LabelDelta, LabelledLocations}

object GreaterThanInstructionDelta extends ExpandInstruction {

  def greaterThanInstruction = CodeAttributeDelta.instruction(GreaterThanInstructionKey)

  override def dependencies: Set[Contract] = super.dependencies ++ Set(LabelledLocations, IfIntegerCompareGreaterOrEqualDelta)

  override val shape = GreaterThanInstructionKey

  override def expand(instruction: Node, methodInfo: Node, state: Language): Seq[Node] = {
    val trueLabel = LabelDelta.getUniqueLabel("true", methodInfo)
    val endLabel = LabelDelta.getUniqueLabel("end", methodInfo)
    Seq(LabelledLocations.ifIntegerCompareGreater(trueLabel),
      SmallIntegerConstantDelta.integerConstant(0),
      LabelledLocations.goTo(endLabel),
      InferredStackFrames.label(trueLabel),
      SmallIntegerConstantDelta.integerConstant(1),
      InferredStackFrames.label(endLabel))
  }

  object GreaterThanInstructionKey extends NodeShape

  override def description: String = "Defines a custom instruction which applies > to the top stack values."

  override def grammarName = "igt"
}