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mirror of https://github.com/DanilaFe/abacus synced 2026-01-31 19:15:20 +00:00

Merge branch 'master' into thread-safety

This commit is contained in:
2017-09-15 22:58:33 -07:00
committed by GitHub
25 changed files with 80 additions and 72 deletions

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@@ -1,7 +1,7 @@
package org.nwapw.abacus.function.applicable
import org.nwapw.abacus.context.MutableEvaluationContext
import org.nwapw.abacus.function.DomainException
import org.nwapw.abacus.exception.DomainException
/**
* A class that can be applied to arguments.
@@ -36,7 +36,8 @@ interface Applicable<in T : Any, out O : Any> {
* @return the result of the operation, or null if parameters do not match.
*/
fun apply(context: MutableEvaluationContext, vararg params: T): O {
if (!matchesParams(context, params)) throw DomainException()
if (!matchesParams(context, params))
throw DomainException("parameters do not match function requirements.")
return applyInternal(context, params)
}

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@@ -11,10 +11,10 @@ package org.nwapw.abacus.tree
* @param left the left node.
* @param right the right node.
*/
abstract class BinaryNode(val operation: String, val left: TreeNode? = null, val right: TreeNode?) : TreeNode() {
abstract class BinaryNode(val operation: String, val left: TreeNode, val right: TreeNode) : TreeNode() {
override fun toString(): String {
return "(" + (left?.toString() ?: "null") + operation + (right?.toString() ?: "null") + ")"
return "(" + left.toString() + operation + right.toString() + ")"
}
}

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@@ -7,13 +7,9 @@ package org.nwapw.abacus.tree
* to extend this functionality.
*
* @param callTo the name of the things being called.
* @param children the children of this node.
*/
abstract class CallNode(val callTo: String) : TreeNode() {
/**
* The list of children this node has.
*/
val children: MutableList<TreeNode> = mutableListOf()
abstract class CallNode(val callTo: String, val children: List<TreeNode>) : TreeNode() {
override fun toString(): String {
val buffer = StringBuffer()

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@@ -3,4 +3,4 @@ package org.nwapw.abacus.tree
import org.nwapw.abacus.context.MutableEvaluationContext
import org.nwapw.abacus.number.NumberInterface
data class EvaluationResult(val value: NumberInterface?, val resultingContext: MutableEvaluationContext)
data class EvaluationResult(val value: NumberInterface, val resultingContext: MutableEvaluationContext)

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@@ -8,10 +8,10 @@ package org.nwapw.abacus.tree
*
* @param function the function string.
*/
class FunctionNode(function: String) : CallNode(function) {
class FunctionNode(function: String, children: List<TreeNode>) : CallNode(function, children) {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
val children = Array<Any>(children.size, { children[it].reduce(reducer) ?: return null; })
override fun <T : Any> reduce(reducer: Reducer<T>): T {
val children = Array<Any>(children.size, { children[it].reduce(reducer) })
return reducer.reduceNode(this, *children)
}

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@@ -10,12 +10,12 @@ package org.nwapw.abacus.tree
* @param left the left child of this node.
* @param right the right child of this node.
*/
class NumberBinaryNode(operation: String, left: TreeNode?, right: TreeNode?)
class NumberBinaryNode(operation: String, left: TreeNode, right: TreeNode)
: BinaryNode(operation, left, right) {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
val left = left?.reduce(reducer) ?: return null
val right = right?.reduce(reducer) ?: return null
override fun <T : Any> reduce(reducer: Reducer<T>): T {
val left = left.reduce(reducer)
val right = right.reduce(reducer)
return reducer.reduceNode(this, left, right)
}

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@@ -10,7 +10,7 @@ package org.nwapw.abacus.tree
*/
class NumberNode(val number: String) : TreeNode() {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
override fun <T : Any> reduce(reducer: Reducer<T>): T {
return reducer.reduceNode(this)
}

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@@ -2,6 +2,7 @@ package org.nwapw.abacus.tree
import org.nwapw.abacus.Abacus
import org.nwapw.abacus.context.EvaluationContext
import org.nwapw.abacus.exception.EvaluationException
import org.nwapw.abacus.number.NumberInterface
class NumberReducer(val abacus: Abacus, context: EvaluationContext) : Reducer<NumberInterface> {
@@ -12,18 +13,19 @@ class NumberReducer(val abacus: Abacus, context: EvaluationContext) : Reducer<Nu
this.context.reducer = this
}
override fun reduceNode(treeNode: TreeNode, vararg children: Any): NumberInterface? {
override fun reduceNode(treeNode: TreeNode, vararg children: Any): NumberInterface {
val promotionManager = abacus.promotionManager
return when(treeNode){
is NumberNode -> {
context.inheritedNumberImplementation?.instanceForString(treeNode.number)
?: throw EvaluationException("no number implementation selected.")
}
is VariableNode -> {
val variable = context.getVariable(treeNode.variable)
if(variable != null) return variable
val definition = context.getDefinition(treeNode.variable)
if(definition != null) return definition.reduce(this)
null
throw EvaluationException("variable is not defined.")
}
is NumberUnaryNode -> {
val child = children[0] as NumberInterface
@@ -34,29 +36,31 @@ class NumberReducer(val abacus: Abacus, context: EvaluationContext) : Reducer<Nu
is NumberBinaryNode -> {
val left = children[0] as NumberInterface
val right = children[1] as NumberInterface
val promotionResult = promotionManager.promote(left, right) ?: return null
val promotionResult = promotionManager.promote(left, right) ?:
throw EvaluationException("promotion failed.")
context.numberImplementation = promotionResult.promotedTo
abacus.pluginManager.operatorFor(treeNode.operation).apply(context, *promotionResult.items)
}
is FunctionNode -> {
val promotionResult = promotionManager
.promote(*children.map { it as NumberInterface }.toTypedArray()) ?: return null
.promote(*children.map { it as NumberInterface }.toTypedArray()) ?:
throw EvaluationException("promotion failed.")
context.numberImplementation = promotionResult.promotedTo
abacus.pluginManager.functionFor(treeNode.callTo).apply(context, *promotionResult.items)
}
is TreeValueUnaryNode -> {
abacus.pluginManager.treeValueOperatorFor(treeNode.operation)
.apply(context, treeNode.applyTo ?: return null)
.apply(context, treeNode.applyTo)
}
is TreeValueBinaryNode -> {
abacus.pluginManager.treeValueOperatorFor(treeNode.operation)
.apply(context, treeNode.left ?: return null, treeNode.right ?: return null)
.apply(context, treeNode.left, treeNode.right)
}
is TreeValueFunctionNode -> {
abacus.pluginManager.treeValueFunctionFor(treeNode.callTo)
.apply(context, *treeNode.children.toTypedArray())
}
else -> null
else -> throw EvaluationException("unrecognized tree node.")
}
}

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@@ -8,11 +8,11 @@ package org.nwapw.abacus.tree
* @param operation the operation this node performs.
* @param child the child this node should be applied to.
*/
class NumberUnaryNode(operation: String, child: TreeNode?)
class NumberUnaryNode(operation: String, child: TreeNode)
: UnaryNode(operation, child) {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
val child = applyTo?.reduce(reducer) ?: return null
override fun <T : Any> reduce(reducer: Reducer<T>): T {
val child = applyTo.reduce(reducer)
return reducer.reduceNode(this, child)
}

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@@ -14,6 +14,6 @@ interface Reducer<out T> {
* @param treeNode the tree node to reduce.
* @param children the list of children, of type T.
*/
fun reduceNode(treeNode: TreeNode, vararg children: Any): T?
fun reduceNode(treeNode: TreeNode, vararg children: Any): T
}

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@@ -5,6 +5,6 @@ package org.nwapw.abacus.tree
*/
abstract class TreeNode {
abstract fun <T : Any> reduce(reducer: Reducer<T>): T?
abstract fun <T : Any> reduce(reducer: Reducer<T>): T
}

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@@ -11,10 +11,10 @@ package org.nwapw.abacus.tree
* @param left the left child of this node.
* @param right the right child of this node.
*/
class TreeValueBinaryNode(operation: String, left: TreeNode?, right: TreeNode?)
class TreeValueBinaryNode(operation: String, left: TreeNode, right: TreeNode)
: BinaryNode(operation, left, right) {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
override fun <T : Any> reduce(reducer: Reducer<T>): T {
return reducer.reduceNode(this)
}

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@@ -7,9 +7,9 @@ package org.nwapw.abacus.tree
* is mostly to help the reducer. Besides that, this class also does not
* even attempt to reduce its children.
*/
class TreeValueFunctionNode(name: String) : CallNode(name) {
class TreeValueFunctionNode(name: String, children: List<TreeNode>) : CallNode(name, children) {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
override fun <T : Any> reduce(reducer: Reducer<T>): T {
return reducer.reduceNode(this)
}

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@@ -9,11 +9,11 @@ package org.nwapw.abacus.tree
* @param operation the operation this node performs.
* @param child the node the operation should be applied to.
*/
class TreeValueUnaryNode(operation: String, child: TreeNode?)
class TreeValueUnaryNode(operation: String, child: TreeNode)
: UnaryNode(operation, child) {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
return reducer.reduceNode(this);
override fun <T : Any> reduce(reducer: Reducer<T>): T {
return reducer.reduceNode(this)
}
}

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@@ -9,10 +9,10 @@ package org.nwapw.abacus.tree
* @param operation the operation applied to the given node.
* @param applyTo the node to which the operation will be applied.
*/
abstract class UnaryNode(val operation: String, val applyTo: TreeNode? = null) : TreeNode() {
abstract class UnaryNode(val operation: String, val applyTo: TreeNode) : TreeNode() {
override fun toString(): String {
return "(" + (applyTo?.toString() ?: "null") + ")" + operation
return "(" + applyTo.toString() + ")" + operation
}
}

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@@ -10,7 +10,7 @@ package org.nwapw.abacus.tree
*/
class VariableNode(val variable: String) : TreeNode() {
override fun <T : Any> reduce(reducer: Reducer<T>): T? {
override fun <T : Any> reduce(reducer: Reducer<T>): T {
return reducer.reduceNode(this)
}