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Copy pathTester.java
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714 lines (669 loc) · 20.4 KB
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package jtree.parser;
import static jtree.parser.JavaTokenType.*;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Scanner;
import java.util.Stack;
import java.util.function.Function;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.commons.text.StringEscapeUtils;
import jtree.nodes.INode;
import jtree.nodes.Name;
import jtree.nodes.REPLEntry;
import jtree.nodes.Statement;
import jtree.util.Either;
import jtree.util.Utils;
import lombok.SneakyThrows;
public class Tester {
/*public static void main(String[] args) {
new Tester().run();
}*/
protected final Map<String, Function<String, Object>> methods = getMethodMap();
protected final Scanner keys = new Scanner(System.in);
protected boolean loop;
private static final Pattern COMMAND_REGEX = Pattern.compile("^\\s*/(.+)");
public void run() {
System.out.println("Enter commands below. Type \"/help\" for a list of commands.");
loop = true;
do {
String input = input("test> ");
var matcher = COMMAND_REGEX.matcher(input);
if(matcher.find()) {
var commandAndArgs = splitCommand(matcher.group(1));
String command = commandAndArgs.getLeft();
String[] args = commandAndArgs.getRight();
dispatchCommand(command, args);
} else {
parseJshellEntries(input);
}
} while(loop);
}
private String lastCommand, lastArgs[];
protected void dispatchCommand(String command, String[] args) {
if(command.equals("redo") || command.equals("Redo") || command.equals("REDO")) {
redo(args);
return;
}
switch(command) {
case "help", "Help", "HELP" -> {
lastCommand = command;
lastArgs = args;
help(args);
}
case "parse", "Parse", "PARSE" -> {
lastCommand = command;
lastArgs = args;
parse(args);
}
case "tokenize", "Tokenize", "TOKENIZE" -> {
lastCommand = command;
lastArgs = args;
tokenize(args);
}
case "open", "Open", "OPEN" -> {
lastCommand = command;
lastArgs = args;
open(args);
}
case "quit", "Quit", "QUIT" -> loop = false;
default -> {
System.out.println("Unknown command: " + command);
return;
}
}
}
protected void open(String[] args) {
if(args.length != 1) {
System.out.println(args.length == 0? "Missing file top open" : "Too many arguments to command 'open'");
return;
}
File file = new File(args[0]);
if(!file.exists() || !file.isFile()) {
System.out.println("File not found: " + args[0]);
}
try(var scan = new Scanner(file)) {
scan.useDelimiter("\\A");
var text = scan.next();
var parser = createParser(text, file.getName());
printNodeString(parser.parseCompilationUnit());
} catch(Exception e) {
e.printStackTrace(System.out);
}
}
protected Pattern PARSE_REPR_REGEX = Pattern.compile("(?ix) ^ parse \\s+ (-r \\s+ \\w+ | \\w+ \\s+ -r) (\\s|$)"),
PARSE_EXPR_REGEX = Pattern.compile("(?ix) ^ parse \\s+ \\w+ (\\s|$)"),
PARSE_FIND_REGEX = Pattern.compile("(?ix) ^ parse \\s+ -f (\\s|$)"),
PARSE_LIST_REGEX = Pattern.compile("(?ix) ^ parse \\s* $"),
TOKENIZE_REGEX = Pattern.compile("(?ix) ^ tokenize (\\s|$)"),
OPEN_REGEX = Pattern.compile("(?ix) ^ open (\\s|$)");
protected Pair<String, String[]> splitCommand(String input) {
String[] split = input.split("\\s+",
PARSE_REPR_REGEX.matcher(input).find()? 4
: PARSE_FIND_REGEX.matcher(input).find()? 3
: PARSE_EXPR_REGEX.matcher(input).find()? 3
: PARSE_LIST_REGEX.matcher(input).find()? 0
: TOKENIZE_REGEX.matcher(input).find()? 2
: OPEN_REGEX.matcher(input).find()? 2
: 0);
String[] args = new String[split.length-1];
System.arraycopy(split, 1, args, 0, args.length);
return Pair.of(split[0], args);
/*String command, args[];
int i;
for(i = 0; i < input.length(); i++) {
if(Character.isWhitespace(input.charAt(i))) {
break;
}
}
command = input.substring(0, i);
while(i < input.length() && Character.isWhitespace(input.charAt(i))) {
i++;
}
if(i < input.length()) {
if(command.equals("parse")) {
int start = i;
for(; i < input.length(); i++) {
if(Character.isWhitespace(input.charAt(i))) {
break;
}
}
String subcommand = input.substring(start, i);
while(i < input.length() && Character.isWhitespace(input.charAt(i))) {
i++;
}
if(i < input.length()) {
if(subcommand.equals("-r")) {
start = i;
for(; i < input.length(); i++) {
if(Character.isWhitespace(input.charAt(i))) {
break;
}
}
String subcommand2 = input.substring(start, i);
while(i < input.length() && Character.isWhitespace(input.charAt(i))) {
i++;
}
if(i < input.length()) {
args = new String[] {subcommand, subcommand2, input.substring(i)};
} else {
args = new String[] {subcommand, subcommand2};
}
} else {
args = new String[] {subcommand, input.substring(i)};
}
} else {
args = new String[] {subcommand};
}
} else {
args = new String[] {input.substring(i)};
}
} else {
args = new String[0];
}
return Pair.of(command, args);*/
}
protected void help(String[] args) {
if(args.length == 0) {
printHelp();
} else {
System.out.println("Too many arguments to command 'help'");
}
}
protected void printHelp() {
System.out.println(
"Commands:\n"
+ "/help\n"
+ "/parse [[-r] <type> <code>]\n"
+ "/parse -f <search terms>\n"
+ "/tokenize <text>\n"
+ "/open <file>"
);
}
protected void redo(String[] args) {
if(args.length == 0) {
redo();
} else {
System.out.println("Too many arguments to command 'redo'");
}
}
protected void redo() {
if(lastCommand == null) {
System.out.println("No previous command");
} else {
dispatchCommand(lastCommand, lastArgs);
}
}
protected void parse(String[] args) {
if(args.length == 0) {
listParseMethods(methods.keySet());
} else if(args[0].equals("-f")) {
searchForParseMethods(args);
} else {
executeParseMethod(args);
}
}
protected void listParseMethods(Collection<String> parseMethods) {
int count = 0;
for(var word : parseMethods) {
System.out.print(word);
if(count == 5) {
System.out.println();
count = 0;
} else {
count++;
System.out.print(" ");
}
}
if(count != 0) {
System.out.println();
}
}
protected void searchForParseMethods(String[] args) {
assert args.length >= 1;
assert args[0].equals("-f");
var searchTerms = new ArrayList<String>();
if(args.length == 1) {
var arg = input("... > ").strip();
searchTerms.add(arg);
lastArgs = new String[args.length+1];
System.arraycopy(args, 0, lastArgs, 0, args.length);
lastArgs[args.length] = arg;
} else {
for(int i = 1; i < args.length; i++) {
searchTerms.add(args[i]);
}
}
var results = new ArrayList<String>();
for(var name : methods.keySet()) {
boolean matches = false;
for(var searchTerm : searchTerms) {
if(searchTerm.startsWith("-")) {
if(name.toLowerCase().contains(searchTerm.substring(1).toLowerCase())) {
matches = false;
break;
}
} else if(name.toLowerCase().contains(searchTerm.toLowerCase())) {
matches = true;
break;
}
}
if(matches) {
results.add(name);
}
}
if(results.isEmpty()) {
System.out.println("No parse methods matched your search terms.");
} else {
listParseMethods(results);
}
}
static class UnfinishedLineManager {
Stack<Character> stack = new Stack<>();
char stringChar;
boolean inString, inMLString, escape, inSLC, inMLC;
boolean isUnfinished() {
return inString || inMLString || inMLC || !stack.isEmpty();
}
void traverseLine(String line) {
for(int i = 0; i < line.length(); i++) {
char ch = line.charAt(i);
if(inString) {
if(escape) {
escape = false;
} else if(ch == stringChar || ch == '\n') {
inString = false;
stringChar = 0;
} else if(ch == '\\') {
escape = true;
}
} else if(inMLString) {
if(escape) {
escape = false;
} else if(ch == stringChar && line.startsWith(Character.toString(stringChar).repeat(3), i)) {
inMLString = false;
stringChar = 0;
} else if(ch == '\\') {
escape = true;
}
} else if(inSLC) {
if(ch == '\n') {
inSLC = false;
}
} else if(inMLC) {
if(line.startsWith("*/", i)) {
inMLC = false;
i++;
}
} else {
if(!stack.isEmpty() && ch == stack.peek()) {
stack.pop();
} else {
switch(ch) {
case '(' -> stack.push(')');
case '[' -> stack.push(']');
case '{' -> stack.push('}');
case '"' -> {
if(line.startsWith("\"\"\"", i)) {
inMLString = true;
} else {
inString = true;
}
stringChar = ch;
}
case '\'' -> {
inString = true;
stringChar = ch;
}
case '/' -> {
if(line.startsWith("//")) {
inSLC = true;
i++;
} else if(line.startsWith("/*")) {
inMLC = true;
i++;
}
}
}
}
}
}
}
}
protected void parseJshellEntries(String input) {
var lineManager = new UnfinishedLineManager();
lineManager.traverseLine(input);
if(lineManager.isUnfinished() || isBlank(input) || input.charAt(input.length()-1) == '\\') {
var sb = new StringBuilder(input);
try {
do {
String line = '\n' + input("... > ");
if(sb.length() != 0 && sb.charAt(sb.length()-1) == '\\') {
line = line.stripLeading();
sb.delete(sb.length()-1, sb.length());
}
sb.append(line);
lineManager.traverseLine(line);
} while(lineManager.isUnfinished() || isBlank(sb) || sb.charAt(sb.length()-1) == '\\');
} catch(NoSuchElementException e) {
return;
}
input = sb.toString();
}
lastCommand = "parse";
if(lastArgs != null && lastArgs.length == 2) {
lastArgs[0] = "jshellEntries";
lastArgs[1] = input;
} else {
lastArgs = new String[] {"jshellEntries", input};
}
var parser = createParser(input, "<string>");
try {
printJshellEntries(parser.parseJshellEntries());
} catch(Exception e) {
e.printStackTrace(System.out);
System.out.println(e.getClass().getName() + ": " + e.getMessage());
}
}
protected void printJshellEntries(List<REPLEntry> jshellEntries) {
boolean first = true;
for(var elem : jshellEntries) {
if(first) {
first = false;
} else {
System.out.println();
}
printNodeString(elem);
}
}
protected void executeParseMethod(String[] args) {
assert args.length > 0;
Function<String, Object> parseMethod;
String code;
boolean repr = false;
try {
int index = 0;
if(args[0].equals("-r")) {
repr = true;
index = 1;
}
String parseMethodName = args[index];
if(parseMethodName.equals("statement")) {
parseMethodName = "blockStatement";
}
parseMethod = methods.get(parseMethodName);
if(parseMethod == null) {
System.out.println("Unknown parse method: " + args[index]);
return;
}
var sb = new StringBuilder();
var lineManager = new UnfinishedLineManager();
if(args.length-index > 1) {
for(int i = index+1; i < args.length; i++) {
if(i != index+1) {
sb.append(' ');
}
sb.append(args[i]);
lineManager.traverseLine(args[i]);
}
} else {
String line = input("... > ");
sb.append(line);
lineManager.traverseLine(line);
lastArgs = new String[args.length+1];
System.arraycopy(args, 0, lastArgs, 0, args.length);
}
while(lineManager.isUnfinished() || isBlank(sb) || sb.charAt(sb.length()-1) == '\\') {
String line = '\n' + input("... > ");
if(sb.length() != 0 && sb.charAt(sb.length()-1) == '\\') {
line = line.stripLeading();
sb.delete(sb.length()-1, sb.length());
}
sb.append(line);
lineManager.traverseLine(line);
}
lastArgs[lastArgs.length-1] = code = sb.toString();
if(parseMethodName.equals("jshellEntries") && !repr) {
parseJshellEntries(code);
return;
}
} catch(NoSuchElementException e) {
return;
}
try {
var result = parseMethod.apply(code);
if(repr) {
printNodeRepr(result);
} else {
printNodeString(result);
}
} catch(Exception e) {
e.printStackTrace(System.out);
System.out.println(e.getClass().getName() + ": " + e.getMessage());
}
}
protected static boolean isBlank(CharSequence cseq) {
for(int i = 0; i < cseq.length(); i++) {
if(!Character.isWhitespace(cseq.charAt(i))) {
return false;
}
}
return true;
}
protected void tokenize(String[] args) {
var sb = new StringBuilder();
if(args.length > 0) {
for(int i = 0; i < args.length; i++) {
if(i != 0) {
sb.append(' ');
}
sb.append(args[i]);
}
} else {
sb.append(input("... > ").stripTrailing());
}
while(sb.charAt(sb.length()-1) == '\\') {
sb.delete(sb.length()-1, sb.length());
sb.append(input("... > ").stripLeading());
}
String text = sb.toString();
lastArgs = new String[] {"tokenize", text};
var tkzr = createTokenizer(text, "<string>");
for(var token : Utils.iter(tkzr)) {
System.out.println(token);
}
}
protected String input(String prompt) {
System.out.print(prompt);
return keys.nextLine();
}
protected JavaParser createParser(CharSequence text, String filename) {
return new JavaParser(text, filename);
}
protected JavaTokenizer<JavaTokenType> createTokenizer(CharSequence text, String filename) {
return new JavaTokenizer<>(text, filename, ENDMARKER, ERRORTOKEN, STRING, CHARACTER, NUMBER, NAME, COMMENT,
JavaTokenType.NORMAL_TOKENS.stream()
.collect(Collectors.toMap(token -> token.getSymbol().orElseThrow(), token -> token)));
}
@SuppressWarnings("unchecked")
protected Class<? extends JavaParser>[] getParserClasses() {
return new Class[] { JavaParser.class };
}
protected void printNodeString(Object obj) {
if(obj instanceof INode) {
System.out.println(((INode)obj).toCode());
} else if(obj instanceof List) {
boolean first = true;
for(var elem : (List<?>)obj) {
if(first) {
first = false;
} else {
System.out.println();
}
printNodeString(elem);
}
} else if(obj instanceof Either) {
printNodeString(((Either<?,?>)obj).getValue());
} else if(obj instanceof Pair) {
var pair = (Pair<?,?>)obj;
printNodeString(pair.getLeft());
System.out.println();
printNodeString(pair.getRight());
} else if(obj instanceof String) {
System.out.print('"');
System.out.print(StringEscapeUtils.escapeJava((String)obj));
System.out.println('"');
} else {
System.out.println(obj);
}
}
protected void printNodeRepr(Object obj) {
if(obj instanceof INode) {
System.out.println(((INode)obj).toString());
} else if(obj instanceof List) {
boolean first = true;
for(var elem : (List<?>)obj) {
if(first) {
first = false;
} else {
System.out.println();
}
printNodeRepr(elem);
}
} else if(obj instanceof Either) {
printNodeRepr(((Either<?,?>)obj).getValue());
} else if(obj instanceof Pair) {
var pair = (Pair<?,?>)obj;
printNodeRepr(pair.getLeft());
System.out.println();
printNodeRepr(pair.getRight());
} else if(obj instanceof String) {
System.out.print('"');
System.out.print(StringEscapeUtils.escapeJava((String)obj));
System.out.println('"');
} else {
System.out.println(obj);
}
}
@SneakyThrows
private HashMap<String, Function<String,Object>> getMethodMap() {
var methods = new HashMap<String, Function<String, Object>>();
for(var parserType : getParserClasses()) {
for(var method : parserType.getMethods()) {
if(!Modifier.isStatic(method.getModifiers()) && method.getParameterCount() == 0
&& method.getName().startsWith("parse") && method.getReturnType() != void.class) {
methods.put(Character.toLowerCase(method.getName().charAt(5)) + method.getName().substring(6),
new Function<>() {
@SuppressWarnings({ "unchecked", "rawtypes" })
@SneakyThrows
public Object apply(String str) {
var parser = createParser(str, "<string>");
Object result;
try(var $1 = parser.preStmts.enter();
var $2 = parser.typeNames.enter(new Name("$Shell"))) {
var obj = method.invoke(parser);
if(parser.preStmts.isEmpty()) {
result = obj;
} else {
List list = parser.preStmts.get();
if(obj instanceof List) {
list.addAll((List)obj);
result = list;
} else if(obj instanceof Statement) {
result = parser.preStmts.apply((Statement)obj);
} else {
list.add(obj);
result = list;
}
}
} catch(InvocationTargetException e) {
throw e.getCause();
}
if(!parser.accept(ENDMARKER)) {
throw parser.syntaxError("unexpected token " + parser.token, parser.token);
}
return result;
}
});
/*if(INode.class.isAssignableFrom(method.getReturnType())) {
methods.put(Character.toLowerCase(method.getName().charAt(5)) + method.getName().substring(6),
new Function<>() {
@SneakyThrows
public Either<? extends INode, ? extends List<? extends INode>> apply(String str) {
var parser = createParser(str, "<string>");
Either<? extends INode, ? extends List<? extends INode>> result;
try(var $ = parser.preStmts.enter()) {
var node = (Node)method.invoke(parser);
if(parser.preStmts.isEmpty()) {
result = Either.first(node);
} else {
@SuppressWarnings({ "unchecked", "rawtypes" })
ArrayList<INode> list = (ArrayList)parser.preStmts.get();
list.add(node);
result = Either.second(list);
}
} catch(InvocationTargetException e) {
throw e.getCause();
}
if(parser.getTokens().hasNext()) {
var token = parser.getTokens().look(0);
if(token.getType() != ENDMARKER) {
throw new SyntaxError("unexpected token " + token, parser.getFilename(), token.getStart().getLine(), token.getStart().getColumn(), token.getLine());
}
}
return result;
}
});
} else if(List.class.isAssignableFrom(method.getReturnType())) {
var type = method.getGenericReturnType();
if(type instanceof ParameterizedType) {
var ptype = (ParameterizedType)type;
if(ptype.getActualTypeArguments().length == 1) {
var arg = ptype.getActualTypeArguments()[0];
if(arg instanceof Class && INode.class.isAssignableFrom((Class<?>)arg)) {
methods.put(Character.toLowerCase(method.getName().charAt(5)) + method.getName().substring(6),
new Function<>() {
@SuppressWarnings("unchecked")
@SneakyThrows
public Either<? extends INode, ? extends List<? extends INode>> apply(String str) {
var parser = createParser(str, "<string>");
Either<? extends INode, ? extends List<? extends INode>> result;
try(var $ = parser.preStmts.enter()) {
List<INode> list = (List<INode>)method.invoke(parser);
if(!parser.preStmts.isEmpty()) {
if(!(list instanceof ArrayList)) {
list = new ArrayList<>(list);
}
list.addAll(0, parser.preStmts.get());
}
result = Either.second(list);
} catch(InvocationTargetException e) {
throw e.getCause();
}
if(parser.getTokens().hasNext()) {
var token = parser.getTokens().next();
if(token.getType() != ENDMARKER) {
throw new SyntaxError("unexpected token " + token, parser.getFilename(), token.getStart().getLine(), token.getStart().getColumn(), token.getLine());
}
}
return result;
}
});
}
}
}
}*/
}
}
}
return methods;
}
}