DanilaFe/Abacus
1
0
Fork 0
mirror of https://github.com/DanilaFe/abacus synced 2024-12-23 07:50:09 -08:00
Code Issues Releases Wiki Activity

Format code.

Browse Source
This commit is contained in:
Danila Fedorin 2017-07-30 21:11:32 -07:00
parent 03eb669eb3
commit a278e5bb9a
39 changed files with 695 additions and 561 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
src/main/java/org/nwapw/abacus/Abacus.java
View File

@ -57,7 +57,7 @@ public class Abacus {
/**
* Creates a new instance of the Abacus calculator.
*/
public Abacus(){
public Abacus() {
pluginManager = new PluginManager();
numberReducer = new NumberReducer(this);
configuration = new ConfigurationObject(CONFIG_FILE);
@ -78,8 +78,19 @@ public class Abacus {
pluginManager.load();
}
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | UnsupportedLookAndFeelException | IllegalAccessException e) {
e.printStackTrace();
}
new Window(new Abacus()).setVisible(true);
}
/**
* Gets the current tree builder.
*
* @return the main tree builder in this abacus instance.
*/
public TreeBuilder getTreeBuilder() {
@ -88,6 +99,7 @@ public class Abacus {
/**
* Gets the current plugin manager,
*
* @return the plugin manager in this abacus instance.
*/
public PluginManager getPluginManager() {
@ -97,6 +109,7 @@ public class Abacus {
/**
* Get the reducer that is responsible for transforming
* an expression into a number.
*
* @return the number reducer in this abacus instance.
*/
public NumberReducer getNumberReducer() {
@ -105,6 +118,7 @@ public class Abacus {
/**
* Gets the configuration object associated with this instance.
*
* @return the configuration object.
*/
public ConfigurationObject getConfiguration() {
@ -114,32 +128,35 @@ public class Abacus {
/**
* Parses a string into a tree structure using the main
* tree builder.
*
* @param input the input string to parse
* @return the resulting tree, null if the tree builder or the produced tree are null.
*/
public TreeNode parseString(String input){
public TreeNode parseString(String input) {
return treeBuilder.fromString(input);
}
/**
* Evaluates the given tree using the main
* number reducer.
*
* @param tree the tree to reduce, must not be null.
* @return the resulting number, or null of the reduction failed.
*/
public NumberInterface evaluateTree(TreeNode tree){
public NumberInterface evaluateTree(TreeNode tree) {
return tree.reduce(numberReducer);
}
/**
* Creates a number from a string.
*
* @param numberString the string to create the number from.
* @return the resulting number.
*/
public NumberInterface numberFromString(String numberString){
public NumberInterface numberFromString(String numberString) {
Class<? extends NumberInterface> toInstantiate =
pluginManager.numberFor(configuration.getNumberImplementation());
if(toInstantiate == null) toInstantiate = DEFAULT_NUMBER;
if (toInstantiate == null) toInstantiate = DEFAULT_NUMBER;
try {
return toInstantiate.getConstructor(String.class).newInstance(numberString);
@ -148,14 +165,4 @@ public class Abacus {
}
return null;
}
public static void main(String[] args){
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | UnsupportedLookAndFeelException | IllegalAccessException e) {
e.printStackTrace();
}
new Window(new Abacus()).setVisible(true);
}
}

104
src/main/java/org/nwapw/abacus/config/ConfigurationObject.java
View File

@ -23,56 +23,12 @@ public class ConfigurationObject {
*/
private Configuration configuration;
/**
* Sets up the ConfigurationObject.
* different constructors do different things,
* but they all lead here.
* @param configuration the configuration to set up with.
*/
private void setup(Configuration configuration){
this.configuration = configuration;
}
/**
* Creates a default configuration.
* @return the newly created default configuration.
*/
private Configuration getDefaultConfig(){
configuration = new Configuration();
configuration.numberType = "naive";
return configuration;
}
/**
* Returns the implementation the user has requested to
* represent their numbers.
* @return the implementation name.
*/
public String getNumberImplementation() {
return configuration.numberType;
}
/**
* Saves the ConfigurationObject to the given file.
* @param toFile the file to save ot.
* @return true if the save succeed, false if otherwise.
*/
public boolean save(File toFile){
if(toFile.getParentFile() != null) toFile.getParentFile().mkdirs();
try {
TOML_WRITER.write(configuration, toFile);
return true;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
/**
* Creates a new configuration object with the given config.
*
* @param config the config to use.
*/
public ConfigurationObject(Configuration config){
public ConfigurationObject(Configuration config) {
setup(config);
}
@ -80,11 +36,12 @@ public class ConfigurationObject {
* Create a configuration object by attempting to
* load a config from the given path, using the
* default configuration otherwise.
*
* @param path the path to attempt to load.
*/
public ConfigurationObject(File path){
public ConfigurationObject(File path) {
Configuration config;
if(!path.exists()) {
if (!path.exists()) {
config = getDefaultConfig();
} else {
Toml parse = new Toml();
@ -98,8 +55,57 @@ public class ConfigurationObject {
* Creates a new configuration object with the
* default configuration.
*/
public ConfigurationObject(){
public ConfigurationObject() {
setup(getDefaultConfig());
}
/**
* Sets up the ConfigurationObject.
* different constructors do different things,
* but they all lead here.
*
* @param configuration the configuration to set up with.
*/
private void setup(Configuration configuration) {
this.configuration = configuration;
}
/**
* Creates a default configuration.
*
* @return the newly created default configuration.
*/
private Configuration getDefaultConfig() {
configuration = new Configuration();
configuration.numberType = "naive";
return configuration;
}
/**
* Returns the implementation the user has requested to
* represent their numbers.
*
* @return the implementation name.
*/
public String getNumberImplementation() {
return configuration.numberType;
}
/**
* Saves the ConfigurationObject to the given file.
*
* @param toFile the file to save ot.
* @return true if the save succeed, false if otherwise.
*/
public boolean save(File toFile) {
if (toFile.getParentFile() != null) toFile.getParentFile().mkdirs();
try {
TOML_WRITER.write(configuration, toFile);
return true;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
}

7
src/main/java/org/nwapw/abacus/function/Function.java
View File

@ -23,6 +23,7 @@ public abstract class Function {
/**
* Checks whether the given params will work for the given function.
*
* @param params the given params
* @return true if the params can be used with this function.
*/
@ -31,6 +32,7 @@ public abstract class Function {
/**
* Internal apply implementation, which already receives appropriately promoted
* parameters that have bee run through matchesParams
*
* @param params the promoted parameters.
* @return the return value of the function.
*/
@ -38,11 +40,12 @@ public abstract class Function {
/**
* Function to check, promote arguments and run the function.
*
* @param params the raw input parameters.
* @return the return value of the function, or null if an error occurred.
*/
public NumberInterface apply(NumberInterface...params) {
if(!matchesParams(params)) return null;
public NumberInterface apply(NumberInterface... params) {
if (!matchesParams(params)) return null;
return applyInternal(params);
}

11
src/main/java/org/nwapw/abacus/function/Operator.java
View File

@ -24,11 +24,12 @@ public class Operator {
/**
* Creates a new operator with the given parameters.
*
* @param associativity the associativity of the operator.
* @param precedence the precedence of the operator.
* @param function the function that the operator calls.
* @param precedence the precedence of the operator.
* @param function the function that the operator calls.
*/
public Operator(OperatorAssociativity associativity, OperatorType operatorType, int precedence, Function function){
public Operator(OperatorAssociativity associativity, OperatorType operatorType, int precedence, Function function) {
this.associativity = associativity;
this.type = operatorType;
this.precedence = precedence;
@ -37,6 +38,7 @@ public class Operator {
/**
* Gets the operator's associativity.
*
* @return the associativity.
*/
public OperatorAssociativity getAssociativity() {
@ -45,6 +47,7 @@ public class Operator {
/**
* Gets the operator's type.
*
* @return the type.
*/
public OperatorType getType() {
@ -53,6 +56,7 @@ public class Operator {
/**
* Gets the operator's precedence.
*
* @return the precedence.
*/
public int getPrecedence() {
@ -61,6 +65,7 @@ public class Operator {
/**
* Gets the operator's function.
*
* @return the function.
*/
public Function getFunction() {

193
src/main/java/org/nwapw/abacus/lexing/Lexer.java
View File

@ -10,15 +10,111 @@ import java.util.*;
/**
* A lexer that can generate tokens of a given type given a list of regular expressions
* to operate on.
*
* @param <T> the type used to identify which match belongs to which pattern.
*/
public class Lexer<T> {
/**
* The registered patterns.
*/
private Map<PatternEntry<T>, Pattern<T>> patterns;
/**
* Creates a new lexer with no registered patterns.
*/
public Lexer() {
patterns = new HashMap<>();
}
/**
* Registers a single pattern.
*
* @param pattern the pattern regex
* @param id the ID by which to identify the pattern.
*/
public void register(String pattern, T id) {
Pattern<T> compiledPattern = new Pattern<>(pattern, id);
if (compiledPattern.getHead() != null) patterns.put(new PatternEntry<>(pattern, id), compiledPattern);
}
/**
* Unregisters a pattern.
*
* @param pattern the pattern to unregister
* @param id the ID by which to identify the pattern.
*/
public void unregister(String pattern, T id) {
patterns.remove(new PatternEntry<>(pattern, id));
}
/**
* Reads one token from the given string.
*
* @param from the string to read from
* @param startAt the index to start at
* @param compare the comparator used to sort tokens by their ID.
* @return the best match.
*/
public Match<T> lexOne(String from, int startAt, Comparator<T> compare) {
ArrayList<Match<T>> matches = new ArrayList<>();
HashSet<PatternNode<T>> currentSet = new HashSet<>();
HashSet<PatternNode<T>> futureSet = new HashSet<>();
int index = startAt;
for (Pattern<T> pattern : patterns.values()) {
pattern.getHead().addInto(currentSet);
}
while (!currentSet.isEmpty()) {
for (PatternNode<T> node : currentSet) {
if (index < from.length() && node.matches(from.charAt(index))) {
node.addOutputsInto(futureSet);
} else if (node instanceof EndNode) {
matches.add(new Match<>(from.substring(startAt, index), ((EndNode<T>) node).getPatternId()));
}
}
HashSet<PatternNode<T>> tmp = currentSet;
currentSet = futureSet;
futureSet = tmp;
futureSet.clear();
index++;
}
matches.sort((a, b) -> compare.compare(a.getType(), b.getType()));
if (compare != null) {
matches.sort(Comparator.comparingInt(a -> a.getContent().length()));
}
return matches.isEmpty() ? null : matches.get(matches.size() - 1);
}
/**
* Reads all tokens from a string.
*
* @param from the string to start from.
* @param startAt the index to start at.
* @param compare the comparator used to sort matches by their IDs.
* @return the resulting list of matches, in order, or null on error.
*/
public List<Match<T>> lexAll(String from, int startAt, Comparator<T> compare) {
int index = startAt;
ArrayList<Match<T>> matches = new ArrayList<>();
Match<T> lastMatch = null;
while (index < from.length() && (lastMatch = lexOne(from, index, compare)) != null) {
int length = lastMatch.getContent().length();
if (length == 0) return null;
matches.add(lastMatch);
index += length;
}
if (lastMatch == null) return null;
return matches;
}
/**
* An entry that represents a pattern that has been registered with the lexer.
*
* @param <T> the type used to identify the pattern.
*/
private static class PatternEntry<T>{
private static class PatternEntry<T> {
/**
* The name of the entry.
*/
@ -30,10 +126,11 @@ public class Lexer<T> {
/**
* Creates a new pattern entry with the given name and id.
*
* @param name the name of the pattern entry.
* @param id the id of the pattern entry.
* @param id the id of the pattern entry.
*/
public PatternEntry(String name, T id){
public PatternEntry(String name, T id) {
this.name = name;
this.id = id;
}
@ -51,94 +148,4 @@ public class Lexer<T> {
}
}
/**
* The registered patterns.
*/
private Map<PatternEntry<T>, Pattern<T>> patterns;
/**
* Creates a new lexer with no registered patterns.
*/
public Lexer(){
patterns = new HashMap<>();
}
/**
* Registers a single pattern.
* @param pattern the pattern regex
* @param id the ID by which to identify the pattern.
*/
public void register(String pattern, T id){
Pattern<T> compiledPattern = new Pattern<>(pattern, id);
if(compiledPattern.getHead() != null) patterns.put(new PatternEntry<>(pattern, id), compiledPattern);
}
/**
* Unregisters a pattern.
* @param pattern the pattern to unregister
* @param id the ID by which to identify the pattern.
*/
public void unregister(String pattern, T id){
patterns.remove(new PatternEntry<>(pattern, id));
}
/**
* Reads one token from the given string.
* @param from the string to read from
* @param startAt the index to start at
* @param compare the comparator used to sort tokens by their ID.
* @return the best match.
*/
public Match<T> lexOne(String from, int startAt, Comparator<T> compare){
ArrayList<Match<T>> matches = new ArrayList<>();
HashSet<PatternNode<T>> currentSet = new HashSet<>();
HashSet<PatternNode<T>> futureSet = new HashSet<>();
int index = startAt;
for(Pattern<T> pattern : patterns.values()){
pattern.getHead().addInto(currentSet);
}
while(!currentSet.isEmpty()){
for(PatternNode<T> node : currentSet){
if(index < from.length() && node.matches(from.charAt(index))) {
node.addOutputsInto(futureSet);
} else if(node instanceof EndNode){
matches.add(new Match<>(from.substring(startAt, index), ((EndNode<T>) node).getPatternId()));
}
}
HashSet<PatternNode<T>> tmp = currentSet;
currentSet = futureSet;
futureSet = tmp;
futureSet.clear();
index++;
}
matches.sort((a, b) -> compare.compare(a.getType(), b.getType()));
if(compare != null) {
matches.sort(Comparator.comparingInt(a -> a.getContent().length()));
}
return matches.isEmpty() ? null : matches.get(matches.size() - 1);
}
/**
* Reads all tokens from a string.
* @param from the string to start from.
* @param startAt the index to start at.
* @param compare the comparator used to sort matches by their IDs.
* @return the resulting list of matches, in order, or null on error.
*/
public List<Match<T>> lexAll(String from, int startAt, Comparator<T> compare){
int index = startAt;
ArrayList<Match<T>> matches = new ArrayList<>();
Match<T> lastMatch = null;
while(index < from.length() && (lastMatch = lexOne(from, index, compare)) != null){
int length = lastMatch.getContent().length();
if(length == 0) return null;
matches.add(lastMatch);
index += length;
}
if(lastMatch == null) return null;
return matches;
}
}

1
src/main/java/org/nwapw/abacus/lexing/pattern/AnyNode.java
View File

@ -2,6 +2,7 @@ package org.nwapw.abacus.lexing.pattern;
/**
* A pattern node that matches any character.
*
* @param <T> the type that's used to tell which pattern this node belongs to.
*/
public class AnyNode<T> extends PatternNode<T> {

7
src/main/java/org/nwapw/abacus/lexing/pattern/EndNode.java
View File

@ -2,6 +2,7 @@ package org.nwapw.abacus.lexing.pattern;
/**
* A node that represents a successful match.
*
* @param <T> the type that's used to tell which pattern this node belongs to.
*/
public class EndNode<T> extends PatternNode<T> {
@ -13,17 +14,19 @@ public class EndNode<T> extends PatternNode<T> {
/**
* Creates a new end node with the given ID.
*
* @param patternId the pattern ID.
*/
public EndNode(T patternId){
public EndNode(T patternId) {
this.patternId = patternId;
}
/**
* Gets the pattern ID.
*
* @return the pattern ID.
*/
public T getPatternId(){
public T getPatternId() {
return patternId;
}

4
src/main/java/org/nwapw/abacus/lexing/pattern/LinkNode.java
View File

@ -1,17 +1,17 @@
package org.nwapw.abacus.lexing.pattern;
import java.util.ArrayList;
import java.util.Collection;
/**
* A node that is used as structural glue in pattern compilation.
*
* @param <T> the type that's used to tell which pattern this node belongs to.
*/
public class LinkNode<T> extends PatternNode<T> {
@Override
public void addInto(Collection<PatternNode<T>> into) {
if(!into.contains(this)) {
if (!into.contains(this)) {
into.add(this);
addOutputsInto(into);
}

8
src/main/java/org/nwapw/abacus/lexing/pattern/Match.java
View File

@ -2,6 +2,7 @@ package org.nwapw.abacus.lexing.pattern;
/**
* A match that has been generated by the lexer.
*
* @param <T> the type used to represent the ID of the pattern this match belongs to.
*/
public class Match<T> {
@ -17,16 +18,18 @@ public class Match<T> {
/**
* Creates a new match with the given parameters.
*
* @param content the content of this match.
* @param type the type of the match.
* @param type the type of the match.
*/
public Match(String content, T type){
public Match(String content, T type) {
this.content = content;
this.type = type;
}
/**
* Gets the content of this match.
*
* @return the content.
*/
public String getContent() {
@ -35,6 +38,7 @@ public class Match<T> {
/**
* Gets the pattern type of the node.
*
* @return the ID of the pattern that this match matched.
*/
public T getType() {

163
src/main/java/org/nwapw/abacus/lexing/pattern/Pattern.java
View File

@ -8,6 +8,7 @@ import java.util.function.Function;
/**
* A pattern that can be compiled from a string and used in lexing.
*
* @param <T> the type that is used to identify and sort this pattern.
*/
public class Pattern<T> {
@ -40,13 +41,53 @@ public class Pattern<T> {
put('?', Pattern.this::transformQuestion);
}};
/**
* Creates / compiles a new pattern with the given id from the given string.
*
* @param from the string to compile a pattern from.
* @param id the ID to use.
*/
public Pattern(String from, T id) {
this.id = id;
index = 0;
source = from;
PatternChain<T> chain = parseSegment(false);
if (chain == null) {
head = null;
} else {
chain.append(new EndNode<>(id));
head = chain.head;
}
}
/**
* Removes all characters that are considered "special" from
* the given string.
*
* @param from the string to sanitize.
* @return the resulting string.
*/
public static String sanitize(String from) {
Pattern<Integer> pattern = new Pattern<>("", 0);
from = from.replace(".", "\\.");
from = from.replace("|", "\\|");
from = from.replace("(", "\\(");
from = from.replace(")", "\\)");
for (Character key : pattern.operations.keySet()) {
from = from.replace("" + key, "\\" + key);
}
return from;
}
/**
* A regex operator function that turns the chain
* into a one-or-more chain.
*
* @param chain the chain to transform.
* @return the modified chain.
*/
private PatternChain<T> transformPlus(PatternChain<T> chain){
private PatternChain<T> transformPlus(PatternChain<T> chain) {
chain.tail.outputStates.add(chain.head);
return chain;
}
@ -54,10 +95,11 @@ public class Pattern<T> {
/**
* A regex operator function that turns the chain
* into a zero-or-more chain.
*
* @param chain the chain to transform.
* @return the modified chain.
*/
private PatternChain<T> transformStar(PatternChain<T> chain){
private PatternChain<T> transformStar(PatternChain<T> chain) {
LinkNode<T> newTail = new LinkNode<>();
LinkNode<T> newHead = new LinkNode<>();
newHead.outputStates.add(chain.head);
@ -72,10 +114,11 @@ public class Pattern<T> {
/**
* A regex operator function that turns the chain
* into a zero-or-one chain.
*
* @param chain the chain to transform.
* @return the modified chain.
*/
private PatternChain<T> transformQuestion(PatternChain<T> chain){
private PatternChain<T> transformQuestion(PatternChain<T> chain) {
LinkNode<T> newTail = new LinkNode<>();
LinkNode<T> newHead = new LinkNode<>();
newHead.outputStates.add(chain.head);
@ -88,14 +131,15 @@ public class Pattern<T> {
/**
* Combines a collection of chains into one OR chain.
*
* @param collection the collection of chains to combine.
* @return the resulting OR chain.
*/
private PatternChain<T> combineChains(Collection<PatternChain<T>> collection){
private PatternChain<T> combineChains(Collection<PatternChain<T>> collection) {
LinkNode<T> head = new LinkNode<>();
LinkNode<T> tail = new LinkNode<>();
PatternChain<T> newChain = new PatternChain<>(head, tail);
for(PatternChain<T> chain : collection){
for (PatternChain<T> chain : collection) {
head.outputStates.add(chain.head);
chain.tail.outputStates.add(tail);
}
@ -104,105 +148,108 @@ public class Pattern<T> {
/**
* Parses a single value from the input into a chain.
*
* @return the resulting chain, or null on error.
*/
private PatternChain<T> parseValue(){
if(index >= source.length()) return null;
if(source.charAt(index) == '\\'){
if(++index >= source.length()) return null;
private PatternChain<T> parseValue() {
if (index >= source.length()) return null;
if (source.charAt(index) == '\\') {
if (++index >= source.length()) return null;
}
return new PatternChain<>(new ValueNode<>(source.charAt(index++)));
}
/**
* Parses a [] range from the input into a chain.
*
* @return the resulting chain, or null on error.
*/
private PatternChain<T> parseOr(){
private PatternChain<T> parseOr() {
Stack<PatternChain<T>> orStack = new Stack<>();
index++;
while(index < source.length() && source.charAt(index) != ']'){
if(source.charAt(index) == '-'){
while (index < source.length() && source.charAt(index) != ']') {
if (source.charAt(index) == '-') {
index++;
if(orStack.empty() || orStack.peek().tail.range() == '\0') return null;
if (orStack.empty() || orStack.peek().tail.range() == '\0') return null;
PatternChain<T> bottomRange = orStack.pop();
PatternChain<T> topRange = parseValue();
if(topRange == null || topRange.tail.range() == '\0') return null;
if (topRange == null || topRange.tail.range() == '\0') return null;
orStack.push(new PatternChain<>(new RangeNode<>(bottomRange.tail.range(), topRange.tail.range())));
} else {
PatternChain<T> newChain = parseValue();
if(newChain == null) return null;
if (newChain == null) return null;
orStack.push(newChain);
}
}
if(index++ >= source.length()) return null;
if (index++ >= source.length()) return null;
return (orStack.size() == 1) ? orStack.pop() : combineChains(orStack);
}
/**
* Parses a repeatable segment from the input into a chain
*
* @param isSubsegment whether the segment is a sub-expression "()", and therefore
* whether to expect a closing brace.
* @return the resulting chain, or null on error.
*/
private PatternChain<T> parseSegment(boolean isSubsegment){
if(index >= source.length() || ((source.charAt(index) != '(') && isSubsegment)) return null;
if(isSubsegment) index++;
private PatternChain<T> parseSegment(boolean isSubsegment) {
if (index >= source.length() || ((source.charAt(index) != '(') && isSubsegment)) return null;
if (isSubsegment) index++;
Stack<PatternChain<T>> orChain = new Stack<>();
PatternChain<T> fullChain = new PatternChain<>();
PatternChain<T> currentChain = null;
while (index < source.length() && source.charAt(index) != ')'){
while (index < source.length() && source.charAt(index) != ')') {
char currentChar = source.charAt(index);
if(operations.containsKey(currentChar)){
if(currentChain == null) return null;
if (operations.containsKey(currentChar)) {
if (currentChain == null) return null;
currentChain = operations.get(currentChar).apply(currentChain);
fullChain.append(currentChain);
currentChain = null;
index++;
} else if(currentChar == '|'){
if(currentChain == null) return null;
} else if (currentChar == '|') {
if (currentChain == null) return null;
fullChain.append(currentChain);
orChain.push(fullChain);
currentChain = null;
fullChain = new PatternChain<>();
if(++index >= source.length()) return null;
} else if(currentChar == '('){
if(currentChain != null) {
if (++index >= source.length()) return null;
} else if (currentChar == '(') {
if (currentChain != null) {
fullChain.append(currentChain);
}
currentChain = parseSegment(true);
if(currentChain == null) return null;
} else if(currentChar == '['){
if(currentChain != null){
if (currentChain == null) return null;
} else if (currentChar == '[') {
if (currentChain != null) {
fullChain.append(currentChain);
}
currentChain = parseOr();
if(currentChain == null) return null;
} else if(currentChar == '.'){
if(currentChain != null){
if (currentChain == null) return null;
} else if (currentChar == '.') {
if (currentChain != null) {
fullChain.append(currentChain);
}
currentChain = new PatternChain<>(new AnyNode<>());
index++;
} else {
if(currentChain != null){
if (currentChain != null) {
fullChain.append(currentChain);
}
currentChain = parseValue();
if(currentChain == null) return null;
if (currentChain == null) return null;
}
}
if(!(!isSubsegment || (index < source.length() && source.charAt(index) == ')'))) return null;
if(isSubsegment) index++;
if (!(!isSubsegment || (index < source.length() && source.charAt(index) == ')'))) return null;
if (isSubsegment) index++;
if(currentChain != null) fullChain.append(currentChain);
if(!orChain.empty()){
if (currentChain != null) fullChain.append(currentChain);
if (!orChain.empty()) {
orChain.push(fullChain);
fullChain = combineChains(orChain);
}
@ -210,48 +257,12 @@ public class Pattern<T> {
return fullChain;
}
/**
* Creates / compiles a new pattern with the given id from the given string.
* @param from the string to compile a pattern from.
* @param id the ID to use.
*/
public Pattern(String from, T id){
this.id = id;
index = 0;
source = from;
PatternChain<T> chain = parseSegment(false);
if(chain == null) {
head = null;
} else {
chain.append(new EndNode<>(id));
head = chain.head;
}
}
/**
* Gets the head PatternNode, for use in matching
*
* @return the pattern node.
*/
public PatternNode<T> getHead() {
return head;
}
/**
* Removes all characters that are considered "special" from
* the given string.
* @param from the string to sanitize.
* @return the resulting string.
*/
public static String sanitize(String from){
Pattern<Integer> pattern = new Pattern<>("", 0);
from = from.replace(".", "\\.");
from = from.replace("|", "\\|");
from = from.replace("(", "\\(");
from = from.replace(")", "\\)");
for(Character key : pattern.operations.keySet()){
from = from.replace("" + key, "\\" + key);
}
return from;
}
}

19
src/main/java/org/nwapw/abacus/lexing/pattern/PatternChain.java
View File

@ -3,6 +3,7 @@ package org.nwapw.abacus.lexing.pattern;
/**
* A chain of nodes that can be treated as a single unit.
* Used during pattern compilation.
*
* @param <T> the type used to identify which pattern has been matched.
*/
public class PatternChain<T> {
@ -18,26 +19,28 @@ public class PatternChain<T> {
/**
* Creates a new chain with the given start and end.
*
* @param head the start of the chain.
* @param tail the end of the chain.
*/
public PatternChain(PatternNode<T> head, PatternNode<T> tail){
public PatternChain(PatternNode<T> head, PatternNode<T> tail) {
this.head = head;
this.tail = tail;
}
/**
* Creates a chain that starts and ends with the same node.
*
* @param node the node to use.
*/
public PatternChain(PatternNode<T> node){
public PatternChain(PatternNode<T> node) {
this(node, node);
}
/**
* Creates an empty chain.
*/
public PatternChain(){
public PatternChain() {
this(null);
}
@ -45,10 +48,11 @@ public class PatternChain<T> {
* Appends the other chain to this one. This modifies
* the nodes, as well.
* If this chain is empty, it is set to the other.
*
* @param other the other chain to append.
*/
public void append(PatternChain<T> other){
if(other.head == null || tail == null) {
public void append(PatternChain<T> other) {
if (other.head == null || tail == null) {
this.head = other.head;
this.tail = other.tail;
} else {
@ -61,10 +65,11 @@ public class PatternChain<T> {
* Appends a single node to this chain. This modifies
* the nodes, as well.
* If this chain is empty, it is set to the node.
*
* @param node the node to append to this chain.
*/
public void append(PatternNode<T> node){
if(tail == null){
public void append(PatternNode<T> node) {
if (tail == null) {
head = tail = node;
} else {
tail.outputStates.add(node);

16
src/main/java/org/nwapw/abacus/lexing/pattern/PatternNode.java
View File

@ -1,6 +1,5 @@
package org.nwapw.abacus.lexing.pattern;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
@ -9,6 +8,7 @@ import java.util.Set;
* A base class for a pattern node. Provides all functions
* necessary for matching, and is constructed by a Pattern instance
* from a string.
*
* @param <T> the type that's used to tell which pattern this node belongs to.
*/
public class PatternNode<T> {
@ -22,42 +22,46 @@ public class PatternNode<T> {
/**
* Creates a new pattern node.
*/
public PatternNode(){
public PatternNode() {
outputStates = new HashSet<>();
}
/**
* Determines whether the current input character can
* be matched by this node.
*
* @param other the character being matched.
* @return true if the character can be matched, false otherwise.
*/
public boolean matches(char other){
public boolean matches(char other) {
return false;
}
/**
* If this node can be used as part of a range, returns that value.
*
* @return a NULL terminator if this character cannot be converted
* into a range bound, or the appropriate range bound if it can.
*/
public char range(){
public char range() {
return '\0';
}
/**
* Adds this node in a collection of other nodes.
*
* @param into the collection to add into.
*/
public void addInto(Collection<PatternNode<T>> into){
public void addInto(Collection<PatternNode<T>> into) {
into.add(this);
}
/**
* Adds the node's children into a collection of other nodes.
*
* @param into the collection to add into.
*/
public void addOutputsInto(Collection<PatternNode<T>> into){
public void addOutputsInto(Collection<PatternNode<T>> into) {
outputStates.forEach(e -> e.addInto(into));
}

6
src/main/java/org/nwapw/abacus/lexing/pattern/RangeNode.java
View File

@ -2,6 +2,7 @@ package org.nwapw.abacus.lexing.pattern;
/**
* A node that matches a range of characters.
*
* @param <T> the type that's used to tell which pattern this node belongs to.
*/
public class RangeNode<T> extends PatternNode<T> {
@ -17,10 +18,11 @@ public class RangeNode<T> extends PatternNode<T> {
/**
* Creates a new range node from the given range.
*
* @param from the bottom bound of the range.
* @param to the top bound of hte range.
* @param to the top bound of hte range.
*/
public RangeNode(char from, char to){
public RangeNode(char from, char to) {
this.from = from;
this.to = to;
}

4
src/main/java/org/nwapw/abacus/lexing/pattern/ValueNode.java
View File

@ -2,6 +2,7 @@ package org.nwapw.abacus.lexing.pattern;
/**
* A node that matches a single value.
*
* @param <T> the type that's used to tell which pattern this node belongs to.
*/
public class ValueNode<T> extends PatternNode<T> {
@ -13,9 +14,10 @@ public class ValueNode<T> extends PatternNode<T> {
/**
* Creates a new node that matches the given character.
*
* @param value
*/
public ValueNode(char value){
public ValueNode(char value) {
this.value = value;
}

61
src/main/java/org/nwapw/abacus/number/NaiveNumber.java
View File

@ -5,26 +5,6 @@ package org.nwapw.abacus.number;
*/
public class NaiveNumber implements NumberInterface {
/**
* The value of this number.
*/
private double value;
/**
* Creates a new NaiveNumber with the given string.
* @param value the value, which will be parsed as a double.
*/
public NaiveNumber(String value) {
this(Double.parseDouble(value));
}
/**
* Creates a new NaiveNumber with the given value.
* @param value the value to use.
*/
public NaiveNumber(double value) {
this.value = value;
}
/**
* The number zero.
*/
@ -33,6 +13,27 @@ public class NaiveNumber implements NumberInterface {
* The number one.
*/
public static final NaiveNumber ONE = new NaiveNumber(1);
/**
* The value of this number.
*/
private double value;
/**
* Creates a new NaiveNumber with the given string.
*
* @param value the value, which will be parsed as a double.
*/
public NaiveNumber(String value) {
this(Double.parseDouble(value));
}
/**
* Creates a new NaiveNumber with the given value.
*
* @param value the value to use.
*/
public NaiveNumber(double value) {
this.value = value;
}
@Override
public int getMaxPrecision() {
@ -41,22 +42,22 @@ public class NaiveNumber implements NumberInterface {
@Override
public NumberInterface multiply(NumberInterface multiplier) {
return new NaiveNumber(value * ((NaiveNumber)multiplier).value);
return new NaiveNumber(value * ((NaiveNumber) multiplier).value);
}
@Override
public NumberInterface divide(NumberInterface divisor) {
return new NaiveNumber(value / ((NaiveNumber)divisor).value);
return new NaiveNumber(value / ((NaiveNumber) divisor).value);
}
@Override
public NumberInterface add(NumberInterface summand) {
return new NaiveNumber(value + ((NaiveNumber)summand).value);
return new NaiveNumber(value + ((NaiveNumber) summand).value);
}
@Override
public NumberInterface subtract(NumberInterface subtrahend) {
return new NaiveNumber(value - ((NaiveNumber)subtrahend).value);
return new NaiveNumber(value - ((NaiveNumber) subtrahend).value);
}
@Override
@ -66,16 +67,16 @@ public class NaiveNumber implements NumberInterface {
@Override
public NumberInterface intPow(int exponent) {
if(exponent == 0){
if (exponent == 0) {
return NaiveNumber.ONE;
}
boolean takeReciprocal = exponent < 0;
exponent = Math.abs(exponent);
NumberInterface power = this;
for(int currentExponent = 1; currentExponent < exponent; currentExponent++){
for (int currentExponent = 1; currentExponent < exponent; currentExponent++) {
power = power.multiply(this);
}
if(takeReciprocal){
if (takeReciprocal) {
power = NaiveNumber.ONE.divide(power);
}
return power;
@ -94,14 +95,14 @@ public class NaiveNumber implements NumberInterface {
@Override
public NumberInterface promoteTo(Class<? extends NumberInterface> toClass) {
if(toClass == this.getClass()) return this;
else if(toClass == PreciseNumber.class){
if (toClass == this.getClass()) return this;
else if (toClass == PreciseNumber.class) {
return new PreciseNumber(Double.toString(value));
}
return null;
}
public String toString(){
public String toString() {
double shiftBy = Math.pow(10, 10);
return Double.toString(Math.round(value * shiftBy) / shiftBy);
}

13
src/main/java/org/nwapw/abacus/number/NumberInterface.java
View File

@ -7,6 +7,7 @@ public interface NumberInterface {
/**
* The maximum precision to which this number operates.
*
* @return the precision.
*/
int getMaxPrecision();
@ -14,27 +15,34 @@ public interface NumberInterface {
/**
* Multiplies this number by another, returning
* a new number instance.
*
* @param multiplier the multiplier
* @return the result of the multiplication.
*/
NumberInterface multiply(NumberInterface multiplier);
/**
* Divides this number by another, returning
* a new number instance.
*
* @param divisor the divisor
* @return the result of the division.
*/
NumberInterface divide(NumberInterface divisor);
/**
* Adds this number to another, returning
* a new number instance.
*
* @param summand the summand
* @return the result of the summation.
*/
NumberInterface add(NumberInterface summand);
/**
* Subtracts another number from this number,
* a new number instance.
*
* @param subtrahend the subtrahend.
* @return the result of the subtraction.
*/
@ -43,12 +51,14 @@ public interface NumberInterface {
/**
* Returns a new instance of this number with
* the sign flipped.
*
* @return the new instance.
*/
NumberInterface negate();
/**
* Raises this number to an integer power.
*
* @param exponent the exponent to which to take the number.
* @return the resulting value.
*/
@ -56,6 +66,7 @@ public interface NumberInterface {
/**
* Compares this number to another.
*
* @param number the number to compare to.
* @return same as Integer.compare();
*/
@ -63,12 +74,14 @@ public interface NumberInterface {
/**
* Same as Math.signum().
*
* @return 1 if this number is positive, -1 if this number is negative, 0 if this number is 0.
*/
int signum();
/**
* Promotes this class to another number class.
*
* @param toClass the class to promote to.
* @return the resulting new instance.
*/

18
src/main/java/org/nwapw/abacus/number/PreciseNumber.java
View File

@ -3,7 +3,7 @@ package org.nwapw.abacus.number;
import java.math.BigDecimal;
import java.math.RoundingMode;
public class PreciseNumber implements NumberInterface{
public class PreciseNumber implements NumberInterface {
/**
* The number one.
@ -25,18 +25,20 @@ public class PreciseNumber implements NumberInterface{
/**
* Constructs a precise number from the given string.
*
* @param string a string representation of the number meeting the same conditions
* as the BidDecimal(String) constructor.
*/
public PreciseNumber(String string){
public PreciseNumber(String string) {
value = new BigDecimal(string);
}
/**
* Constructs a precise number from the given BigDecimal.
*
* @param value a BigDecimal object representing the value of the number.
*/
public PreciseNumber(BigDecimal value){
public PreciseNumber(BigDecimal value) {
this.value = value;
}
@ -67,16 +69,16 @@ public class PreciseNumber implements NumberInterface{
@Override
public NumberInterface intPow(int exponent) {
if(exponent == 0){
if (exponent == 0) {
return PreciseNumber.ONE;
}
boolean takeReciprocal = exponent < 0;
exponent = Math.abs(exponent);
NumberInterface power = this;
for(int currentExponent = 1; currentExponent < exponent; currentExponent++){
for (int currentExponent = 1; currentExponent < exponent; currentExponent++) {
power = power.multiply(this);
}
if(takeReciprocal){
if (takeReciprocal) {
power = PreciseNumber.ONE.divide(power);
}
return power;
@ -93,13 +95,13 @@ public class PreciseNumber implements NumberInterface{
}
@Override
public NumberInterface negate(){
public NumberInterface negate() {
return new PreciseNumber(value.negate());
}
@Override
public NumberInterface promoteTo(Class<? extends NumberInterface> toClass) {
if(toClass == this.getClass()){
if (toClass == this.getClass()) {
return this;
}
return null;

12
src/main/java/org/nwapw/abacus/parsing/LexerTokenizer.java
View File

@ -29,7 +29,7 @@ public class LexerTokenizer implements Tokenizer<Match<TokenType>>, PluginListen
/**
* Creates a new lexer tokenizer.
*/
public LexerTokenizer(){
public LexerTokenizer() {
lexer = new Lexer<TokenType>() {{
register(" ", TokenType.WHITESPACE);
register(",", TokenType.COMMA);
@ -46,20 +46,20 @@ public class LexerTokenizer implements Tokenizer<Match<TokenType>>, PluginListen
@Override
public void onLoad(PluginManager manager) {
for(String operator : manager.getAllOperators()){
lexer.register(Pattern.sanitize(operator), TokenType.OP);
for (String operator : manager.getAllOperators()) {
lexer.register(Pattern.sanitize(operator), TokenType.OP);
}
for(String function : manager.getAllFunctions()){
for (String function : manager.getAllFunctions()) {
lexer.register(Pattern.sanitize(function), TokenType.FUNCTION);
}
}
@Override
public void onUnload(PluginManager manager) {
for(String operator : manager.getAllOperators()){
for (String operator : manager.getAllOperators()) {
lexer.unregister(Pattern.sanitize(operator), TokenType.OP);
}
for(String function : manager.getAllFunctions()){
for (String function : manager.getAllFunctions()) {
lexer.unregister(Pattern.sanitize(function), TokenType.FUNCTION);
}
}

2
src/main/java/org/nwapw/abacus/parsing/Parser.java
View File

@ -7,12 +7,14 @@ import java.util.List;
/**
* An itnerface that provides the ability to convert a list of tokens
* into a parse tree.
*
* @param <T> the type of tokens accepted by this parser.
*/
public interface Parser<T> {
/**
* Constructs a tree out of the given tokens.
*
* @param tokens the tokens to construct a tree from.
* @return the constructed tree, or null on error.
*/

65
src/main/java/org/nwapw/abacus/parsing/ShuntingYardParser.java
View File

@ -36,9 +36,10 @@ public class ShuntingYardParser implements Parser<Match<TokenType>>, PluginListe
/**
* Creates a new Shunting Yard parser with the given Abacus instance.
*
* @param abacus the abacus instance.
*/
public ShuntingYardParser(Abacus abacus){
public ShuntingYardParser(Abacus abacus) {
this.abacus = abacus;
precedenceMap = new HashMap<>();
associativityMap = new HashMap<>();
@ -47,39 +48,40 @@ public class ShuntingYardParser implements Parser<Match<TokenType>>, PluginListe
/**
* Rearranges tokens into a postfix list, using Shunting Yard.
*
* @param from the tokens to be rearranged.
* @return the resulting list of rearranged tokens.
*/
public List<Match<TokenType>> intoPostfix(List<Match<TokenType>> from){
public List<Match<TokenType>> intoPostfix(List<Match<TokenType>> from) {
ArrayList<Match<TokenType>> output = new ArrayList<>();
Stack<Match<TokenType>> tokenStack = new Stack<>();
while(!from.isEmpty()){
while (!from.isEmpty()) {
Match<TokenType> match = from.remove(0);
TokenType matchType = match.getType();
if(matchType == TokenType.NUM) {
if (matchType == TokenType.NUM) {
output.add(match);
} else if(matchType == TokenType.FUNCTION) {
output.add(new Match<>("" , TokenType.INTERNAL_FUNCTION_END));
} else if (matchType == TokenType.FUNCTION) {
output.add(new Match<>("", TokenType.INTERNAL_FUNCTION_END));
tokenStack.push(match);
} else if(matchType == TokenType.OP){
} else if (matchType == TokenType.OP) {
String tokenString = match.getContent();
OperatorType type = typeMap.get(tokenString);
int precedence = precedenceMap.get(tokenString);
OperatorAssociativity associativity = associativityMap.get(tokenString);
if(type == OperatorType.UNARY_POSTFIX){
if (type == OperatorType.UNARY_POSTFIX) {
output.add(match);
continue;
}
while(!tokenStack.empty()) {
while (!tokenStack.empty()) {
Match<TokenType> otherMatch = tokenStack.peek();
TokenType otherMatchType = otherMatch.getType();
if(!(otherMatchType == TokenType.OP || otherMatchType == TokenType.FUNCTION)) break;
if (!(otherMatchType == TokenType.OP || otherMatchType == TokenType.FUNCTION)) break;
if(otherMatchType == TokenType.OP){
if (otherMatchType == TokenType.OP) {
int otherPrecedence = precedenceMap.get(match.getContent());
if(otherPrecedence < precedence ||
if (otherPrecedence < precedence ||
(associativity == OperatorAssociativity.RIGHT && otherPrecedence == precedence)) {
break;
}
@ -87,22 +89,22 @@ public class ShuntingYardParser implements Parser<Match<TokenType>>, PluginListe
output.add(tokenStack.pop());
}
tokenStack.push(match);
} else if(matchType == TokenType.OPEN_PARENTH){
} else if (matchType == TokenType.OPEN_PARENTH) {
tokenStack.push(match);
} else if(matchType == TokenType.CLOSE_PARENTH || matchType == TokenType.COMMA){
while(!tokenStack.empty() && tokenStack.peek().getType() != TokenType.OPEN_PARENTH){
} else if (matchType == TokenType.CLOSE_PARENTH || matchType == TokenType.COMMA) {
while (!tokenStack.empty() && tokenStack.peek().getType() != TokenType.OPEN_PARENTH) {
output.add(tokenStack.pop());
}
if(tokenStack.empty()) return null;
if(matchType == TokenType.CLOSE_PARENTH){
if (tokenStack.empty()) return null;
if (matchType == TokenType.CLOSE_PARENTH) {
tokenStack.pop();
}
}
}
while(!tokenStack.empty()){
while (!tokenStack.empty()) {
Match<TokenType> match = tokenStack.peek();
TokenType matchType = match.getType();
if(!(matchType == TokenType.OP || matchType == TokenType.FUNCTION)) return null;
if (!(matchType == TokenType.OP || matchType == TokenType.FUNCTION)) return null;
output.add(tokenStack.pop());
}
return output;
@ -110,37 +112,38 @@ public class ShuntingYardParser implements Parser<Match<TokenType>>, PluginListe
/**
* Constructs a tree recursively from a list of tokens.
*
* @param matches the list of tokens from the source string.
* @return the construct tree expression.
*/
public TreeNode constructRecursive(List<Match<TokenType>> matches){
if(matches.size() == 0) return null;
public TreeNode constructRecursive(List<Match<TokenType>> matches) {
if (matches.size() == 0) return null;
Match<TokenType> match = matches.remove(0);
TokenType matchType = match.getType();
if(matchType == TokenType.OP){
if (matchType == TokenType.OP) {
String operator = match.getContent();
OperatorType type = typeMap.get(operator);
if(type == OperatorType.BINARY_INFIX){
if (type == OperatorType.BINARY_INFIX) {
TreeNode right = constructRecursive(matches);
TreeNode left = constructRecursive(matches);
if(left == null || right == null) return null;
if (left == null || right == null) return null;
else return new BinaryInfixNode(operator, left, right);
} else {
TreeNode applyTo = constructRecursive(matches);
if(applyTo == null) return null;
if (applyTo == null) return null;
else return new UnaryPrefixNode(operator, applyTo);
}
} else if(matchType == TokenType.NUM){
} else if (matchType == TokenType.NUM) {
return new NumberNode(abacus.numberFromString(match.getContent()));
} else if(matchType == TokenType.FUNCTION){
} else if (matchType == TokenType.FUNCTION) {
String functionName = match.getContent();
FunctionNode node = new FunctionNode(functionName);
while(!matches.isEmpty() && matches.get(0).getType() != TokenType.INTERNAL_FUNCTION_END){
while (!matches.isEmpty() && matches.get(0).getType() != TokenType.INTERNAL_FUNCTION_END) {
TreeNode argument = constructRecursive(matches);
if(argument == null) return null;
if (argument == null) return null;
node.prependChild(argument);
}
if(matches.isEmpty()) return null;
if (matches.isEmpty()) return null;
matches.remove(0);
return node;
}
@ -156,7 +159,7 @@ public class ShuntingYardParser implements Parser<Match<TokenType>>, PluginListe
@Override
public void onLoad(PluginManager manager) {
for(String operator : manager.getAllOperators()){
for (String operator : manager.getAllOperators()) {
Operator operatorInstance = manager.operatorFor(operator);
precedenceMap.put(operator, operatorInstance.getPrecedence());
associativityMap.put(operator, operatorInstance.getAssociativity());

2
src/main/java/org/nwapw/abacus/parsing/Tokenizer.java
View File

@ -4,12 +4,14 @@ import java.util.List;
/**
* Interface that provides the ability to convert a string into a list of tokens.
*
* @param <T> the type of the tokens produced.
*/
public interface Tokenizer<T> {
/**
* Converts a string into tokens.
*
* @param string the string to convert.
* @return the list of tokens, or null on error.
*/

11
src/main/java/org/nwapw/abacus/parsing/TreeBuilder.java
View File

@ -10,6 +10,7 @@ import java.util.List;
* working with any parameters at all, and the generics
* in this class are used only to ensure the tokenizer and parser
* are of the same type.
*
* @param <T> the type of tokens created by the tokenizer and used by the parser.
*/
public class TreeBuilder<T> {
@ -25,22 +26,24 @@ public class TreeBuilder<T> {
/**
* Create a new Tree Builder with the given tokenizer and parser
*
* @param tokenizer the tokenizer to turn strings into tokens
* @param parser the parser to turn tokens into a tree
* @param parser the parser to turn tokens into a tree
*/
public TreeBuilder(Tokenizer<T> tokenizer, Parser<T> parser){
public TreeBuilder(Tokenizer<T> tokenizer, Parser<T> parser) {
this.tokenizer = tokenizer;
this.parser = parser;
}
/**
* Parse the given string into a tree.
*
* @param input the string to parse into a tree.
* @return the resulting tree.
*/
public TreeNode fromString(String input){
public TreeNode fromString(String input) {
List<T> tokens = tokenizer.tokenizeString(input);
if(tokens == null) return null;
if (tokens == null) return null;
return parser.constructTree(tokens);
}

13
src/main/java/org/nwapw/abacus/plugin/ClassFinder.java
View File

@ -20,9 +20,10 @@ public class ClassFinder {
/**
* Loads all the plugin classes from the given plugin folder.
*
* @param filePath the path for the plugin folder.
* @return the list of all loaded classes.
* @throws IOException thrown if an error occurred scanning the plugin folder.
* @throws IOException thrown if an error occurred scanning the plugin folder.
* @throws ClassNotFoundException thrown if the class listed in the file doesn't get loaded.
*/
public static List<Class<?>> loadJars(String filePath) throws IOException, ClassNotFoundException {
@ -31,19 +32,20 @@ public class ClassFinder {
/**
* Loads all the plugin classes from the given plugin folder.
*
* @param pluginFolderPath the folder in which to look for plugins.
* @return the list of all loaded classes.
* @throws IOException thrown if an error occurred scanning the plugin folder.
* @throws IOException thrown if an error occurred scanning the plugin folder.
* @throws ClassNotFoundException thrown if the class listed in the file doesn't get loaded.
*/
public static List<Class<?>> loadJars(File pluginFolderPath) throws IOException, ClassNotFoundException {
ArrayList<Class<?>> toReturn = new ArrayList<>();
if(!pluginFolderPath.exists()) return toReturn;
if (!pluginFolderPath.exists()) return toReturn;
ArrayList<File> files = Files.walk(pluginFolderPath.toPath())
.map(Path::toFile)
.filter(f -> f.getName().endsWith(".jar"))
.collect(Collectors.toCollection(ArrayList::new));
for (File file : files){
for (File file : files) {
toReturn.addAll(loadJar(file));
}
return toReturn;
@ -51,9 +53,10 @@ public class ClassFinder {
/**
* Loads the classes from a single path, given by the file.
*
* @param jarLocation the location of the jar to load.
* @return the list of loaded classes loaded from the jar.
* @throws IOException thrown if there was an error reading the file
* @throws IOException thrown if there was an error reading the file
* @throws ClassNotFoundException thrown if the class could not be loaded.
*/
public static List<Class<?>> loadJar(File jarLocation) throws IOException, ClassNotFoundException {

39
src/main/java/org/nwapw/abacus/plugin/Plugin.java
View File

@ -39,10 +39,12 @@ public abstract class Plugin {
*/
private boolean enabled;
private Plugin(){ }
private Plugin() {
}
/**
* Creates a new plugin with the given PluginManager.
*
* @param manager the manager controlling this plugin.
*/
public Plugin(PluginManager manager) {
@ -55,30 +57,34 @@ public abstract class Plugin {
/**
* Gets the list of functions provided by this plugin.
*
* @return the list of registered functions.
*/
public final Set<String> providedFunctions(){
public final Set<String> providedFunctions() {
return functions.keySet();
}
/**
* Gets the list of functions provided by this plugin.
*
* @return the list of registered functions.
*/
public final Set<String> providedOperators(){
public final Set<String> providedOperators() {
return operators.keySet();
}
/**
* Gets the list of all numbers provided by this plugin.
*
* @return the list of registered numbers.
*/
public final Set<String> providedNumbers(){
public final Set<String> providedNumbers() {
return numbers.keySet();
}
/**
* Gets a function under the given function name.
*
* @param functionName the name of the function to get
* @return the function, or null if this plugin doesn't provide it.
*/
@ -88,6 +94,7 @@ public abstract class Plugin {
/**
* Gets an operator under the given operator name.
*
* @param operatorName the name of the operator to get.
* @return the operator, or null if this plugin doesn't provide it.
*/
@ -97,10 +104,11 @@ public abstract class Plugin {
/**
* Gets the class under the given name.
*
* @param numberName the name of the class.
* @return the class, or null if the plugin doesn't provide it.
*/
public final Class<? extends NumberInterface> getNumber(String numberName){
public final Class<? extends NumberInterface> getNumber(String numberName) {
return numbers.get(numberName);
}
@ -108,8 +116,8 @@ public abstract class Plugin {
* Enables the function, loading the necessary instances
* of functions.
*/
public final void enable(){
if(enabled) return;
public final void enable() {
if (enabled) return;
onEnable();
enabled = true;
}
@ -118,8 +126,8 @@ public abstract class Plugin {
* Disables the plugin, clearing loaded data store by default
* and calling its disable() method.
*/
public final void disable(){
if(!enabled) return;
public final void disable() {
if (!enabled) return;
onDisable();
functions.clear();
operators.clear();
@ -129,7 +137,8 @@ public abstract class Plugin {
/**
* To be used in load(). Registers a function abstract class with the
* plugin internally, which makes it accessible to the plugin manager.
* @param name the name to register by.
*
* @param name the name to register by.
* @param toRegister the function implementation.
*/
protected final void registerFunction(String name, Function toRegister) {
@ -140,7 +149,8 @@ public abstract class Plugin {
* To be used in load(). Registers an operator abstract class
* with the plugin internally, which makes it accessible to
* the plugin manager.
* @param name the name of the operator.
*
* @param name the name of the operator.
* @param operator the operator to register.
*/
protected final void registerOperator(String name, Operator operator) {
@ -152,10 +162,11 @@ public abstract class Plugin {
* with the plugin internally, which makes it possible
* for the user to select it as an "implementation" for the
* number that they would like to use.
* @param name the name to register it under.
*
* @param name the name to register it under.
* @param toRegister the class to register.
*/
protected final void registerNumber(String name, Class<? extends NumberInterface> toRegister){
protected final void registerNumber(String name, Class<? extends NumberInterface> toRegister) {
numbers.put(name, toRegister);
}
@ -163,6 +174,7 @@ public abstract class Plugin {
* Searches the PluginManager for the given function name.
* This can be used by the plugins internally in order to call functions
* they do not provide.
*
* @param name the name for which to search
* @return the resulting function, or null if none was found for that name.
*/
@ -174,6 +186,7 @@ public abstract class Plugin {
* Searches the PluginManager for the given operator name.
* This can be used by the plugins internally in order to call
* operations they do not provide.
*
* @param name the name for which to search
* @return the resulting operator, or null if none was found for that name.
*/

2
src/main/java/org/nwapw/abacus/plugin/PluginListener.java
View File

@ -7,12 +7,14 @@ public interface PluginListener {
/**
* Called when the PluginManager loads plugins.
*
* @param manager the manager that fired the event.
*/
public void onLoad(PluginManager manager);
/**
* Called when the PluginManager unloads all its plugins.
*
* @param manager the manager that fired the event.
*/
public void onUnload(PluginManager manager);

62
src/main/java/org/nwapw/abacus/plugin/PluginManager.java
View File

@ -56,7 +56,7 @@ public class PluginManager {
/**
* Creates a new plugin manager.
*/
public PluginManager(){
public PluginManager() {
loadedPluginClasses = new HashSet<>();
plugins = new HashSet<>();
cachedFunctions = new HashMap<>();
@ -73,23 +73,24 @@ public class PluginManager {
* list of items of the type using the setFunction and getting the value
* of it is available via getFunction. If the value is contained
* in the cache, it returns the cached value instead.
* @param plugins the plugin list to search.
* @param cache the cache to use
*
* @param plugins the plugin list to search.
* @param cache the cache to use
* @param setFunction the function to retrieve a set of available T's from the plugin
* @param getFunction the function to get the T value under the given name
* @param name the name to search for
* @param <T> the type of element being search
* @param name the name to search for
* @param <T> the type of element being search
* @return the retrieved element, or null if it was not found.
*/
private static <T> T searchCached(Collection<Plugin> plugins, Map<String, T> cache,
java.util.function.Function<Plugin, Set<String>> setFunction,
java.util.function.BiFunction<Plugin, String, T> getFunction,
String name){
if(cache.containsKey(name)) return cache.get(name);
String name) {
if (cache.containsKey(name)) return cache.get(name);
T loadedValue = null;
for(Plugin plugin : plugins){
if(setFunction.apply(plugin).contains(name)){
for (Plugin plugin : plugins) {
if (setFunction.apply(plugin).contains(name)) {
loadedValue = getFunction.apply(plugin, name);
break;
}
@ -98,39 +99,44 @@ public class PluginManager {
cache.put(name, loadedValue);
return loadedValue;
}
/**
* Gets a function under the given name.
*
* @param name the name of the function
* @return the function under the given name.
*/
public Function functionFor(String name){
public Function functionFor(String name) {
return searchCached(plugins, cachedFunctions, Plugin::providedFunctions, Plugin::getFunction, name);
}
/**
* Gets an operator under the given name.
*
* @param name the name of the operator.
* @return the operator under the given name.
*/
public Operator operatorFor(String name){
public Operator operatorFor(String name) {
return searchCached(plugins, cachedOperators, Plugin::providedOperators, Plugin::getOperator, name);
}
/**
* Gets a numer implementation under the given name.
*
* @param name the name of the implementation.
* @return the implementation class
*/
public Class<? extends NumberInterface> numberFor(String name){
public Class<? extends NumberInterface> numberFor(String name) {
return searchCached(plugins, cachedNumbers, Plugin::providedNumbers, Plugin::getNumber, name);
}
/**
* Adds an instance of Plugin that already has been instantiated.
*
* @param plugin the plugin to add.
*/
public void addInstantiated(Plugin plugin){
if(loadedPluginClasses.contains(plugin.getClass())) return;
public void addInstantiated(Plugin plugin) {
if (loadedPluginClasses.contains(plugin.getClass())) return;
plugins.add(plugin);
loadedPluginClasses.add(plugin.getClass());
}
@ -138,10 +144,11 @@ public class PluginManager {
/**
* Instantiates a class of plugin, and adds it to this
* plugin manager.
*
* @param newClass the new class to instantiate.
*/
public void addClass(Class<?> newClass){
if(!Plugin.class.isAssignableFrom(newClass) || newClass == Plugin.class) return;
public void addClass(Class<?> newClass) {
if (!Plugin.class.isAssignableFrom(newClass) || newClass == Plugin.class) return;
try {
addInstantiated((Plugin) newClass.getConstructor(PluginManager.class).newInstance(this));
} catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
@ -152,9 +159,9 @@ public class PluginManager {
/**
* Loads all the plugins in the PluginManager.
*/
public void load(){
for(Plugin plugin : plugins) plugin.enable();
for(Plugin plugin : plugins){
public void load() {
for (Plugin plugin : plugins) plugin.enable();
for (Plugin plugin : plugins) {
allFunctions.addAll(plugin.providedFunctions());
allOperators.addAll(plugin.providedOperators());
allNumbers.addAll(plugin.providedNumbers());
@ -165,8 +172,8 @@ public class PluginManager {
/**
* Unloads all the plugins in the PluginManager.
*/
public void unload(){
for(Plugin plugin : plugins) plugin.disable();
public void unload() {
for (Plugin plugin : plugins) plugin.disable();
allFunctions.clear();
allOperators.clear();
allNumbers.clear();
@ -176,13 +183,14 @@ public class PluginManager {
/**
* Reloads all the plugins in the PluginManager.
*/
public void reload(){
public void reload() {
unload();
reload();
}
/**
* Gets all the functions loaded by the Plugin Manager.
*
* @return the set of all functions that were loaded.
*/
public Set<String> getAllFunctions() {
@ -191,6 +199,7 @@ public class PluginManager {
/**
* Gets all the operators loaded by the Plugin Manager.
*
* @return the set of all operators that were loaded.
*/
public Set<String> getAllOperators() {
@ -199,6 +208,7 @@ public class PluginManager {
/**
* Gets all the number implementations loaded by the Plugin Manager
*
* @return the set of all implementations that were loaded
*/
public Set<String> getAllNumbers() {
@ -207,18 +217,20 @@ public class PluginManager {
/**
* Adds a plugin change listener to this plugin manager.
*
* @param listener the listener to add.
*/
public void addListener(PluginListener listener){
public void addListener(PluginListener listener) {
listeners.add(listener);
}
/**
* Remove the plugin change listener from this plugin manager.
*
* @param listener the listener to remove.
*/
public void removeListener(PluginListener listener){
public void removeListener(PluginListener listener) {
listeners.remove(listener);
}
}

176
src/main/java/org/nwapw/abacus/plugin/StandardPlugin.java
View File

@ -25,7 +25,7 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
NumberInterface sum = params[0];
for(int i = 1; i < params.length; i++){
for (int i = 1; i < params.length; i++) {
sum = sum.add(params[i]);
}
return sum;
@ -42,7 +42,7 @@ public class StandardPlugin extends Plugin {
return params[0].subtract(params[1]);
}
});
public static final Operator OP_MULTIPLY = new Operator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX,1, new Function() {
public static final Operator OP_MULTIPLY = new Operator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 1, new Function() {
@Override
protected boolean matchesParams(NumberInterface[] params) {
return params.length >= 1;
@ -51,13 +51,13 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
NumberInterface product = params[0];
for(int i = 1; i < params.length; i++){
for (int i = 1; i < params.length; i++) {
product = product.multiply(params[i]);
}
return product;
}
});
public static final Operator OP_DIVIDE = new Operator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX,1, new Function() {
public static final Operator OP_DIVIDE = new Operator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 1, new Function() {
@Override
protected boolean matchesParams(NumberInterface[] params) {
return params.length >= 1;
@ -66,23 +66,12 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
NumberInterface product = params[0];
for(int i = 1; i < params.length; i++){
for (int i = 1; i < params.length; i++) {
product = product.multiply(params[i]);
}
return product;
}
});
public static final Operator OP_CARET = new Operator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 2, new Function() {
@Override
protected boolean matchesParams(NumberInterface[] params) {
return params.length == 2;
}
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
return FUNCTION_EXP.apply(FUNCTION_LN.apply(params[0]).multiply(params[1]));
}
});
public static final Operator OP_FACTORIAL = new Operator(OperatorAssociativity.RIGHT, OperatorType.UNARY_POSTFIX, 0, new Function() {
//private HashMap<Class<? extends NumberInterface>, ArrayList<NumberInterface>> storedList = new HashMap<Class<? extends NumberInterface>, ArrayList<NumberInterface>>();
@Override
@ -92,13 +81,13 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
if(params[0].signum() == 0){
if (params[0].signum() == 0) {
return (new NaiveNumber(1)).promoteTo(params[0].getClass());
}
NumberInterface factorial = params[0];
NumberInterface multiplier = params[0];
//It is necessary to later prevent calls of factorial on anything but non-negative integers.
while((multiplier = multiplier.subtract(NaiveNumber.ONE.promoteTo(multiplier.getClass()))).signum() == 1){
while ((multiplier = multiplier.subtract(NaiveNumber.ONE.promoteTo(multiplier.getClass()))).signum() == 1) {
factorial = factorial.multiply(multiplier);
}
return factorial;
@ -131,7 +120,7 @@ public class StandardPlugin extends Plugin {
boolean takeReciprocal = params[0].signum() == -1;
params[0] = FUNCTION_ABS.apply(params[0]);
NumberInterface sum = sumSeries(params[0], StandardPlugin::getExpSeriesTerm, getNTermsExp(getMaxError(params[0]), params[0]));
if(takeReciprocal){
if (takeReciprocal) {
sum = NaiveNumber.ONE.promoteTo(sum.getClass()).divide(sum);
}
return sum;
@ -147,19 +136,18 @@ public class StandardPlugin extends Plugin {
protected NumberInterface applyInternal(NumberInterface[] params) {
NumberInterface param = params[0];
int powersOf2 = 0;
while(FUNCTION_ABS.apply(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass()))).compareTo((new NaiveNumber(0.1)).promoteTo(param.getClass())) >= 0){
if(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() == 1) {
while (FUNCTION_ABS.apply(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass()))).compareTo((new NaiveNumber(0.1)).promoteTo(param.getClass())) >= 0) {
if (param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() == 1) {
param = param.divide(new NaiveNumber(2).promoteTo(param.getClass()));
powersOf2++;
if(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() != 1) {
if (param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() != 1) {
break;
//No infinite loop for you.
}
}
else {
} else {
param = param.multiply(new NaiveNumber(2).promoteTo(param.getClass()));
powersOf2--;
if(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() != 1) {
if (param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() != 1) {
break;
//No infinite loop for you.
}
@ -174,14 +162,14 @@ public class StandardPlugin extends Plugin {
* @param x value at which the series is evaluated. 0 < x < 2. (x=2 is convergent but impractical.)
* @return the partial sum.
*/
private NumberInterface getLogPartialSum(NumberInterface x){
private NumberInterface getLogPartialSum(NumberInterface x) {
NumberInterface maxError = getMaxError(x);
x = x.subtract(NaiveNumber.ONE.promoteTo(x.getClass())); //Terms used are for log(x+1).
NumberInterface currentTerm = x, sum = x;
int n = 1;
while(FUNCTION_ABS.apply(currentTerm).compareTo(maxError) > 0){
while (FUNCTION_ABS.apply(currentTerm).compareTo(maxError) > 0) {
n++;
currentTerm = currentTerm.multiply(x).multiply((new NaiveNumber(n-1)).promoteTo(x.getClass())).divide((new NaiveNumber(n)).promoteTo(x.getClass())).negate();
currentTerm = currentTerm.multiply(x).multiply((new NaiveNumber(n - 1)).promoteTo(x.getClass())).divide((new NaiveNumber(n)).promoteTo(x.getClass())).negate();
sum = sum.add(currentTerm);
}
return sum;
@ -192,7 +180,7 @@ public class StandardPlugin extends Plugin {
* @param number a number of the same type as the return type. (Used for precision.)
* @return the value of log(2) with the appropriate precision.
*/
private NumberInterface getLog2(NumberInterface number){
private NumberInterface getLog2(NumberInterface number) {
NumberInterface maxError = getMaxError(number);
//NumberInterface errorBound = (new NaiveNumber(1)).promoteTo(number.getClass());
//We'll use the series \sigma_{n >= 1) ((1/3^n + 1/4^n) * 1/n)
@ -201,7 +189,7 @@ public class StandardPlugin extends Plugin {
NumberInterface a = (new NaiveNumber(1)).promoteTo(number.getClass()), b = a, c = a;
NumberInterface sum = NaiveNumber.ZERO.promoteTo(number.getClass());
int n = 0;
while(a.compareTo(maxError) >= 1){
while (a.compareTo(maxError) >= 1) {
n++;
a = a.divide((new NaiveNumber(3)).promoteTo(number.getClass()));
b = b.divide((new NaiveNumber(4)).promoteTo(number.getClass()));
@ -211,6 +199,17 @@ public class StandardPlugin extends Plugin {
return sum;
}
};
public static final Operator OP_CARET = new Operator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 2, new Function() {
@Override
protected boolean matchesParams(NumberInterface[] params) {
return params.length == 2;
}
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
return FUNCTION_EXP.apply(FUNCTION_LN.apply(params[0]).multiply(params[1]));
}
});
public static final Function FUNCTION_SQRT = new Function() {
@Override
protected boolean matchesParams(NumberInterface[] params) {
@ -227,6 +226,65 @@ public class StandardPlugin extends Plugin {
super(manager);
}
/**
* Returns the nth term of the Taylor series (centered at 0) of e^x
*
* @param n the term required (n >= 0).
* @param x the real number at which the series is evaluated.
* @return the nth term of the series.
*/
private static NumberInterface getExpSeriesTerm(int n, NumberInterface x) {
return x.intPow(n).divide(OP_FACTORIAL.getFunction().apply((new NaiveNumber(n)).promoteTo(x.getClass())));
}
/**
* Returns the number of terms needed to evaluate the exponential function (at x)
* such that the error is at most maxError.
*
* @param maxError Maximum error permissible (This should probably be positive.)
* @param x where the function is evaluated.
* @return the number of terms needed to evaluated the exponential function.
*/
private static int getNTermsExp(NumberInterface maxError, NumberInterface x) {
//We need n such that |x^(n+1)| <= (n+1)! * maxError
//The variables LHS and RHS refer to the above inequality.
int n = 0;
x = FUNCTION_ABS.apply(x);
NumberInterface LHS = x, RHS = maxError;
while (LHS.compareTo(RHS) > 0) {
n++;
LHS = LHS.multiply(x);
RHS = RHS.multiply(new NaiveNumber(n + 1).promoteTo(RHS.getClass()));
}
return n;
}
/**
* Returns a partial sum of a series whose terms are given by the nthTermFunction, evaluated at x.
*
* @param x the value at which the series is evaluated.
* @param nthTermFunction the function that returns the nth term of the series, in the format term(x, n).
* @param n the number of terms in the partial sum.
* @return the value of the partial sum that has the same class as x.
*/
private static NumberInterface sumSeries(NumberInterface x, BiFunction<Integer, NumberInterface, NumberInterface> nthTermFunction, int n) {
NumberInterface sum = NaiveNumber.ZERO.promoteTo(x.getClass());
for (int i = 0; i <= n; i++) {
sum = sum.add(nthTermFunction.apply(i, x));
}
return sum;
}
/**
* Returns the maximum error based on the precision of the class of number.
*
* @param number Any instance of the NumberInterface in question (should return an appropriate precision).
* @return the maximum error.
*/
private static NumberInterface getMaxError(NumberInterface number) {
return (new NaiveNumber(10)).promoteTo(number.getClass()).intPow(-number.getMaxPrecision());
}
@Override
public void onEnable() {
registerNumber("naive", NaiveNumber.class);
@ -242,7 +300,7 @@ public class StandardPlugin extends Plugin {
registerFunction("abs", FUNCTION_ABS);
registerFunction("exp", FUNCTION_EXP);
registerFunction("ln", FUNCTION_LN);
registerFunction("sqrt",FUNCTION_SQRT);
registerFunction("sqrt", FUNCTION_SQRT);
}
@Override
@ -250,60 +308,4 @@ public class StandardPlugin extends Plugin {
}
/**
* Returns the nth term of the Taylor series (centered at 0) of e^x
* @param n the term required (n >= 0).
* @param x the real number at which the series is evaluated.
* @return the nth term of the series.
*/
private static NumberInterface getExpSeriesTerm(int n, NumberInterface x){
return x.intPow(n).divide(OP_FACTORIAL.getFunction().apply((new NaiveNumber(n)).promoteTo(x.getClass())));
}
/**
* Returns the number of terms needed to evaluate the exponential function (at x)
* such that the error is at most maxError.
* @param maxError Maximum error permissible (This should probably be positive.)
* @param x where the function is evaluated.
* @return the number of terms needed to evaluated the exponential function.
*/
private static int getNTermsExp(NumberInterface maxError, NumberInterface x) {
//We need n such that |x^(n+1)| <= (n+1)! * maxError
//The variables LHS and RHS refer to the above inequality.
int n = 0;
x = FUNCTION_ABS.apply(x);
NumberInterface LHS = x, RHS = maxError;
while (LHS.compareTo(RHS) > 0) {
n++;
LHS = LHS.multiply(x);
RHS = RHS.multiply(new NaiveNumber(n + 1).promoteTo(RHS.getClass()));
}
return n;
}
/**
* Returns a partial sum of a series whose terms are given by the nthTermFunction, evaluated at x.
* @param x the value at which the series is evaluated.
* @param nthTermFunction the function that returns the nth term of the series, in the format term(x, n).
* @param n the number of terms in the partial sum.
* @return the value of the partial sum that has the same class as x.
*/
private static NumberInterface sumSeries(NumberInterface x, BiFunction<Integer, NumberInterface, NumberInterface> nthTermFunction, int n){
NumberInterface sum = NaiveNumber.ZERO.promoteTo(x.getClass());
for(int i = 0; i <= n; i++){
sum = sum.add(nthTermFunction.apply(i, x));
}
return sum;
}
/**
* Returns the maximum error based on the precision of the class of number.
* @param number Any instance of the NumberInterface in question (should return an appropriate precision).
* @return the maximum error.
*/
private static NumberInterface getMaxError(NumberInterface number){
return (new NaiveNumber(10)).promoteTo(number.getClass()).intPow(-number.getMaxPrecision());
}
}

20
src/main/java/org/nwapw/abacus/tree/BinaryInfixNode.java
View File

@ -18,25 +18,28 @@ public class BinaryInfixNode extends TreeNode {
*/
private TreeNode right;
private BinaryInfixNode() {}
private BinaryInfixNode() {
}
/**
* Creates a new operation node with the given operation
* and no child nodes.
*
* @param operation the operation.
*/
public BinaryInfixNode(String operation){
public BinaryInfixNode(String operation) {
this(operation, null, null);
}
/**
* Creates a new operation node with the given operation
* and child nodes.
*
* @param operation the operation.
* @param left the left node of the expression.
* @param right the right node of the expression.
* @param left the left node of the expression.
* @param right the right node of the expression.
*/
public BinaryInfixNode(String operation, TreeNode left, TreeNode right){
public BinaryInfixNode(String operation, TreeNode left, TreeNode right) {
this.operation = operation;
this.left = left;
this.right = right;
@ -44,6 +47,7 @@ public class BinaryInfixNode extends TreeNode {
/**
* Gets the operation in this node.
*
* @return the operation in this node.
*/
public String getOperation() {
@ -52,6 +56,7 @@ public class BinaryInfixNode extends TreeNode {
/**
* Gets the left sub-expression of this node.
*
* @return the left node.
*/
public TreeNode getLeft() {
@ -60,6 +65,7 @@ public class BinaryInfixNode extends TreeNode {
/**
* Sets the left sub-expression of this node.
*
* @param left the sub-expression to apply.
*/
public void setLeft(TreeNode left) {
@ -68,6 +74,7 @@ public class BinaryInfixNode extends TreeNode {
/**
* Gets the right sub-expression of this node.
*
* @return the right node.
*/
public TreeNode getRight() {
@ -76,6 +83,7 @@ public class BinaryInfixNode extends TreeNode {
/**
* Sets the right sub-expression of this node.
*
* @param right the sub-expression to apply.
*/
public void setRight(TreeNode right) {
@ -86,7 +94,7 @@ public class BinaryInfixNode extends TreeNode {
public <T> T reduce(Reducer<T> reducer) {
T leftReduce = left.reduce(reducer);
T rightReduce = right.reduce(reducer);
if(leftReduce == null || rightReduce == null) return null;
if (leftReduce == null || rightReduce == null) return null;
return reducer.reduceNode(this, leftReduce, rightReduce);
}

17
src/main/java/org/nwapw/abacus/tree/FunctionNode.java
View File

@ -20,19 +20,22 @@ public class FunctionNode extends TreeNode {
/**
* Creates a function node with no function.
*/
private FunctionNode() { }
private FunctionNode() {
}
/**
* Creates a new function node with the given function name.
*
* @param function the function name.
*/
public FunctionNode(String function){
public FunctionNode(String function) {
this.function = function;
children = new ArrayList<>();
}
/**
* Gets the function name for this node.
*
* @return the function name.
*/
public String getFunction() {
@ -41,14 +44,16 @@ public class FunctionNode extends TreeNode {
/**
* Adds a child to the end of this node's child list.
*
* @param node the child to add.
*/
public void appendChild(TreeNode node){
public void appendChild(TreeNode node) {
children.add(node);
}
/**
* Adds a new child to the beginning of this node's child list.
*
* @param node the node to add.
*/
public void prependChild(TreeNode node) {
@ -58,9 +63,9 @@ public class FunctionNode extends TreeNode {
@Override
public <T> T reduce(Reducer<T> reducer) {
Object[] reducedChildren = new Object[children.size()];
for(int i = 0; i < reducedChildren.length; i++){
for (int i = 0; i < reducedChildren.length; i++) {
reducedChildren[i] = children.get(i).reduce(reducer);
if(reducedChildren[i] == null) return null;
if (reducedChildren[i] == null) return null;
}
return reducer.reduceNode(this, reducedChildren);
}
@ -70,7 +75,7 @@ public class FunctionNode extends TreeNode {
StringBuilder buffer = new StringBuilder();
buffer.append(function);
buffer.append("(");
for(int i = 0; i < children.size(); i++){
for (int i = 0; i < children.size(); i++) {
buffer.append(children.get(i));
buffer.append(i == children.size() - 1 ? "" : ", ");
}

7
src/main/java/org/nwapw/abacus/tree/NumberNode.java
View File

@ -1,6 +1,5 @@
package org.nwapw.abacus.tree;
import org.nwapw.abacus.number.NaiveNumber;
import org.nwapw.abacus.number.NumberInterface;
/**
@ -16,20 +15,22 @@ public class NumberNode extends TreeNode {
/**
* Creates a number node with no number.
*/
public NumberNode(){
public NumberNode() {
number = null;
}
/**
* Creates a new number node with the given double value.
*
* @param newNumber the number for which to create a number node.
*/
public NumberNode(NumberInterface newNumber){
public NumberNode(NumberInterface newNumber) {
this.number = newNumber;
}
/**
* Gets the number value of this node.
*
* @return the number value of this node.
*/
public NumberInterface getNumber() {

19
src/main/java/org/nwapw/abacus/tree/NumberReducer.java
View File

@ -17,34 +17,35 @@ public class NumberReducer implements Reducer<NumberInterface> {
/**
* Creates a new number reducer.
*
* @param abacus the calculator instance.
*/
public NumberReducer(Abacus abacus){
public NumberReducer(Abacus abacus) {
this.abacus = abacus;
}
@Override
public NumberInterface reduceNode(TreeNode node, Object... children) {
if(node instanceof NumberNode) {
if (node instanceof NumberNode) {
return ((NumberNode) node).getNumber();
} else if(node instanceof BinaryInfixNode){
} else if (node instanceof BinaryInfixNode) {
NumberInterface left = (NumberInterface) children[0];
NumberInterface right = (NumberInterface) children[1];
Function function = abacus.getPluginManager().operatorFor(((BinaryInfixNode) node).getOperation()).getFunction();
if(function == null) return null;
if (function == null) return null;
return function.apply(left, right);
} else if(node instanceof UnaryPrefixNode) {
} else if (node instanceof UnaryPrefixNode) {
NumberInterface child = (NumberInterface) children[0];
Function functionn = abacus.getPluginManager().operatorFor(((UnaryPrefixNode) node).getOperation()).getFunction();
if(functionn == null) return null;
if (functionn == null) return null;
return functionn.apply(child);
} else if(node instanceof FunctionNode){
} else if (node instanceof FunctionNode) {
NumberInterface[] convertedChildren = new NumberInterface[children.length];
for(int i = 0; i < convertedChildren.length; i++){
for (int i = 0; i < convertedChildren.length; i++) {
convertedChildren[i] = (NumberInterface) children[i];
}
Function function = abacus.getPluginManager().functionFor(((FunctionNode) node).getFunction());
if(function == null) return null;
if (function == null) return null;
return function.apply(convertedChildren);
}
return null;

6
src/main/java/org/nwapw/abacus/tree/Reducer.java
View File

@ -2,16 +2,18 @@ package org.nwapw.abacus.tree;
/**
* Interface used to reduce a tree into a single value.
*
* @param <T> the value to reduce into.
*/
public interface Reducer<T> {
/**
* Reduces the given tree into a single value of type T.
* @param node the node being passed in to be reduced.
*
* @param node the node being passed in to be reduced.
* @param children the already-reduced children of this node.
* @return the resulting value from the reduce.
*/
public T reduceNode(TreeNode node, Object...children);
public T reduceNode(TreeNode node, Object... children);
}

3
src/main/java/org/nwapw/abacus/tree/TokenType.java
View File

@ -16,9 +16,10 @@ public enum TokenType {
/**
* Creates a new token type with the given priority.
*
* @param priority the priority of this token type.
*/
TokenType(int priority){
TokenType(int priority) {
this.priority = priority;
}

9
src/main/java/org/nwapw/abacus/tree/TreeNode.java
View File

@ -1,11 +1,5 @@
package org.nwapw.abacus.tree;
import org.nwapw.abacus.function.OperatorAssociativity;
import org.nwapw.abacus.lexing.Lexer;
import org.nwapw.abacus.lexing.pattern.Match;
import java.util.*;
/**
* An abstract class that represents an expression tree node.
*/
@ -13,8 +7,9 @@ public abstract class TreeNode {
/**
* The function that reduces a tree to a single vale.
*
* @param reducer the reducer used to reduce the tree.
* @param <T> the type the reducer produces.
* @param <T> the type the reducer produces.
* @return the result of the reduction, or null on error.
*/
public abstract <T> T reduce(Reducer<T> reducer);

12
src/main/java/org/nwapw/abacus/tree/UnaryPrefixNode.java
View File

@ -13,18 +13,20 @@ public class UnaryPrefixNode extends TreeNode {
/**
* Creates a new node with the given operation and no child.
*
* @param operation the operation for this node.
*/
public UnaryPrefixNode(String operation){
public UnaryPrefixNode(String operation) {
this(operation, null);
}
/**
* Creates a new node with the given operation and child.
*
* @param operation the operation for this node.
* @param applyTo the node to apply the function to.
* @param applyTo the node to apply the function to.
*/
public UnaryPrefixNode(String operation, TreeNode applyTo){
public UnaryPrefixNode(String operation, TreeNode applyTo) {
this.operation = operation;
this.applyTo = applyTo;
}
@ -32,12 +34,13 @@ public class UnaryPrefixNode extends TreeNode {
@Override
public <T> T reduce(Reducer<T> reducer) {
Object reducedChild = applyTo.reduce(reducer);
if(reducedChild == null) return null;
if (reducedChild == null) return null;
return reducer.reduceNode(this, reducedChild);
}
/**
* Gets the operation of this node.
*
* @return the operation this node performs.
*/
public String getOperation() {
@ -46,6 +49,7 @@ public class UnaryPrefixNode extends TreeNode {
/**
* Gets the node to which this node's operation applies.
*
* @return the tree node to which the operation will be applied.
*/
public TreeNode getApplyTo() {

52
src/main/java/org/nwapw/abacus/window/HistoryTableModel.java
View File

@ -2,9 +2,7 @@ package org.nwapw.abacus.window;
import org.nwapw.abacus.tree.TreeNode;
import javax.swing.event.TableModelListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import java.util.ArrayList;
import java.util.List;
@ -31,30 +29,6 @@ public class HistoryTableModel extends AbstractTableModel {
TreeNode.class,
String.class
};
/**
* Class used specifically to hold data about
* the previous entries into the calculator.
*/
public static class HistoryEntry {
public String input;
public TreeNode parsedInput;
public String output;
public HistoryEntry(String input, TreeNode parsedInput, String output){
this.input = input;
this.parsedInput = parsedInput;
this.output = output;
}
Object nthValue(int n){
if(n == 0) return input;
if(n == 1) return parsedInput;
if(n == 2) return output;
return null;
}
}
/**
* The list of entries.
*/
@ -69,9 +43,10 @@ public class HistoryTableModel extends AbstractTableModel {
/**
* Adds an entry to the model.
*
* @param entry the entry to add.
*/
public void addEntry(HistoryEntry entry){
public void addEntry(HistoryEntry entry) {
entries.add(entry);
}
@ -105,4 +80,27 @@ public class HistoryTableModel extends AbstractTableModel {
return entries.get(rowIndex).nthValue(columnIndex);
}
/**
* Class used specifically to hold data about
* the previous entries into the calculator.
*/
public static class HistoryEntry {
public String input;
public TreeNode parsedInput;
public String output;
public HistoryEntry(String input, TreeNode parsedInput, String output) {
this.input = input;
this.parsedInput = parsedInput;
this.output = output;
}
Object nthValue(int n) {
if (n == 0) return input;
if (n == 1) return parsedInput;
if (n == 2) return output;
return null;
}
}
}

13
src/main/java/org/nwapw/abacus/window/Window.java
View File

@ -119,12 +119,12 @@ public class Window extends JFrame {
*/
private ActionListener evaluateListener = (event) -> {
TreeNode parsedExpression = abacus.parseString(inputField.getText());
if(parsedExpression == null){
if (parsedExpression == null) {
lastOutputArea.setText(SYNTAX_ERR_STRING);
return;
}
NumberInterface numberInterface = abacus.evaluateTree(parsedExpression);
if(numberInterface == null) {
if (numberInterface == null) {
lastOutputArea.setText(EVAL_ERR_STRING);
return;
}
@ -146,9 +146,10 @@ public class Window extends JFrame {
/**
* Creates a new window with the given manager.
*
* @param abacus the calculator instance to interact with other components.
*/
public Window(Abacus abacus){
public Window(Abacus abacus) {
this();
this.abacus = abacus;
}
@ -218,11 +219,11 @@ public class Window extends JFrame {
inputField.setEnabled(enabled);
inputEnterButton.setEnabled(enabled);
for(ActionListener removingListener : inputEnterButton.getActionListeners()){
for (ActionListener removingListener : inputEnterButton.getActionListeners()) {
inputEnterButton.removeActionListener(removingListener);
inputField.removeActionListener(removingListener);
}
if(listener != null){
if (listener != null) {
inputEnterButton.addActionListener(listener);
inputField.addActionListener(listener);
}
@ -236,7 +237,7 @@ public class Window extends JFrame {
@Override
public void mouseClicked(MouseEvent e) {
Point clickPoint = e.getPoint();
if(e.getClickCount() == 2){
if (e.getClickCount() == 2) {
int row = historyTable.rowAtPoint(clickPoint);
int column = historyTable.columnAtPoint(clickPoint);
String toCopy = historyTable.getValueAt(row, column).toString();

32
src/test/java/org/nwapw/abacus/tests/LexerTests.java
View File

@ -10,7 +10,7 @@ import java.util.List;
public class LexerTests {
@Test
public void testBasicSuccess(){
public void testBasicSuccess() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("abc", 0);
lexer.register("def", 1);
@ -22,7 +22,7 @@ public class LexerTests {
}
@Test
public void testBasicFailure(){
public void testBasicFailure() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("abc", 0);
lexer.register("def", 1);
@ -30,20 +30,20 @@ public class LexerTests {
}
@Test
public void testNoPatterns(){
public void testNoPatterns() {
Lexer<Integer> lexer = new Lexer<>();
Assert.assertNull(lexer.lexAll("abcdefabc", 0, Integer::compare));
}
@Test
public void testEmptyMatches(){
public void testEmptyMatches() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a?", 0);
Assert.assertNull(lexer.lexAll("", 0, Integer::compare));
}
@Test
public void testOneOrMore(){
public void testOneOrMore() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a+", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
@ -52,7 +52,7 @@ public class LexerTests {
}
@Test
public void testZeroOrMore(){
public void testZeroOrMore() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a*", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
@ -61,7 +61,7 @@ public class LexerTests {
}
@Test
public void testZeroOrOne(){
public void testZeroOrOne() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a?", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
@ -70,7 +70,7 @@ public class LexerTests {
}
@Test
public void testGreedyMatching(){
public void testGreedyMatching() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("a*a", 0);
List<Match<Integer>> tokens = lexer.lexAll("aaaa", 0, Integer::compare);
@ -79,20 +79,20 @@ public class LexerTests {
}
@Test
public void testAnyCharacter(){
public void testAnyCharacter() {
String testString = "abcdef";
Lexer<Integer> lexer = new Lexer<>();
lexer.register(".", 0);
List<Match<Integer>> tokens = lexer.lexAll(testString, 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(tokens.size(), testString.length());
for(int i = 0; i < tokens.size(); i++){
for (int i = 0; i < tokens.size(); i++) {
Assert.assertEquals(testString.substring(i, i + 1), tokens.get(i).getContent());
}
}
@Test
public void testBasicGroup(){
public void testBasicGroup() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("(abc)", 0);
List<Match<Integer>> tokens = lexer.lexAll("abc", 0, Integer::compare);
@ -102,27 +102,27 @@ public class LexerTests {
}
@Test
public void testBasicRangeSuccess(){
public void testBasicRangeSuccess() {
String testString = "abcdef";
Lexer<Integer> lexer = new Lexer<>();
lexer.register("[a-f]", 0);
List<Match<Integer>> tokens = lexer.lexAll(testString, 0, Integer::compare);
Assert.assertNotNull(tokens);
Assert.assertEquals(testString.length(), tokens.size());
for(int i = 0; i < tokens.size(); i++){
for (int i = 0; i < tokens.size(); i++) {
Assert.assertEquals(testString.substring(i, i + 1), tokens.get(i).getContent());
}
}
@Test
public void testBasicRangeFailure(){
public void testBasicRangeFailure() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("[a-f]", 0);
Assert.assertNull(lexer.lexAll("g", 0, Integer::compare));
}
@Test
public void testGroupAndOperator(){
public void testGroupAndOperator() {
Lexer<Integer> lexer = new Lexer<>();
lexer.register("(abc)+", 0);
List<Match<Integer>> tokens = lexer.lexAll("abcabc", 0, Integer::compare);

10
src/test/java/org/nwapw/abacus/tests/TokenizerTests.java
View File

@ -64,17 +64,17 @@ public class TokenizerTests {
@Test
public void testInteger() {
assertTokensMatch(lexerTokenizer.tokenizeString("11"), new TokenType[]{ TokenType.NUM } );
assertTokensMatch(lexerTokenizer.tokenizeString("11"), new TokenType[]{TokenType.NUM});
}
@Test
public void testLeadingZeroDecimal() {
assertTokensMatch(lexerTokenizer.tokenizeString("0.1"), new TokenType[]{ TokenType.NUM } );
assertTokensMatch(lexerTokenizer.tokenizeString("0.1"), new TokenType[]{TokenType.NUM});
}
@Test
public void testNonLeadingDecimal() {
assertTokensMatch(lexerTokenizer.tokenizeString(".1"), new TokenType[]{ TokenType.NUM } );
assertTokensMatch(lexerTokenizer.tokenizeString(".1"), new TokenType[]{TokenType.NUM});
}
@Test
@ -102,7 +102,7 @@ public class TokenizerTests {
}
@Test
public void testOperatorParsing(){
public void testOperatorParsing() {
TokenType[] types = {
TokenType.NUM,
TokenType.OP,
@ -112,7 +112,7 @@ public class TokenizerTests {
}
@Test
public void testSanitizedOperators(){
public void testSanitizedOperators() {
TokenType[] types = {
TokenType.NUM,
TokenType.OP,