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Working grammar + Compiled Parser

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This commit is contained in:
Daniel
2024-03-05 20:02:43 +02:00
parent 6d6aa1678f
commit b99a4e12e5
14 changed files with 58 additions and 433 deletions
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3
src/grammars/HelloWorld.g4
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@@ -1,3 +0,0 @@
grammar HelloWorld;
start: 'Hello, World!' EOF;

36
src/grammars/SoftwareRequirements.g4 Normal file
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@@ -0,0 +1,36 @@
grammar SoftwareRequirements;
// Lexer rules
ID : [a-zA-Z]+ ;
STRING : '"' ~'"'* '"' ;
WS : [ \t\r\n]+ -> skip ;
// Parser rules
program : (requirement | functionSpec)+ ;
requirement : ID ':' predicate ';' ;
predicate : expression '=>' expression ;
expression : term (logical_op term)* ;
term : '(' expression ')'
| STRING
;
logical_op : '&&' | '||' ;
functionSpec : ID'()' ':' '(' parameter_list ')' ';' ;
parameter_list : parameter (',' parameter)* ;
parameter : STRING ':' STRING ;
// Define symbols
LPAREN : '(' ;
RPAREN : ')' ;
COLON : ':' ;
SEMICOLON : ';' ;
COMMA : ',' ;
LBRACE : '{' ;
RBRACE : '}' ;

28
src/main/java/org/lumijiez/Main.java
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@@ -4,26 +4,32 @@ import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.CharStreams; import org.antlr.v4.runtime.CharStreams;
import org.antlr.v4.runtime.CommonTokenStream; import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.tree.ParseTreeWalker; import org.antlr.v4.runtime.tree.ParseTreeWalker;
import org.lumijiez.parser.HelloWorldBaseListener; import org.lumijiez.parser.SoftwareRequirementsBaseListener;
import org.lumijiez.parser.HelloWorldLexer; import org.lumijiez.parser.SoftwareRequirementsLexer;
import org.lumijiez.parser.HelloWorldParser; import org.lumijiez.parser.SoftwareRequirementsParser;
import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Objects;
public class Main { public class Main {
public static void main(String[] args) { public static void main(String[] args) throws IOException, URISyntaxException {
String input = "Hello, World!"; String input = new String(Files.readAllBytes(Path.of(Objects.requireNonNull(Main.class.getResource("/TestProgram.txt")).toURI())));
CharStream inputStream = CharStreams.fromString(input); CharStream inputStream = CharStreams.fromString(input);
HelloWorldLexer lexer = new HelloWorldLexer(inputStream); SoftwareRequirementsLexer lexer = new SoftwareRequirementsLexer(inputStream);
CommonTokenStream tokenStream = new CommonTokenStream(lexer); CommonTokenStream tokenStream = new CommonTokenStream(lexer);
HelloWorldParser parser = new HelloWorldParser(tokenStream); SoftwareRequirementsParser parser = new SoftwareRequirementsParser(tokenStream);
ParseTreeWalker walker = new ParseTreeWalker(); ParseTreeWalker walker = new ParseTreeWalker();
MyListener listener = new MyListener(); SoftwareReqParseTree listener = new SoftwareReqParseTree();
walker.walk(listener, parser.start()); walker.walk(listener, parser.program());
} }
static class MyListener extends HelloWorldBaseListener { static class SoftwareReqParseTree extends SoftwareRequirementsBaseListener {
@Override @Override
public void enterStart(HelloWorldParser.StartContext ctx) { public void enterProgram(SoftwareRequirementsParser.ProgramContext ctx) {
System.out.println("Parsed: " + ctx.getText()); System.out.println("Parsed: " + ctx.getText());
} }
} }

14
src/main/java/org/lumijiez/parser/HelloWorld.interp
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@@ -1,14 +0,0 @@
token literal names:
null
'Hello, World!'
token symbolic names:
null
null
rule names:
start
atn:
[4, 1, 1, 6, 2, 0, 7, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 4, 0, 2, 1, 0, 0, 0, 2, 3, 5, 1, 0, 0, 3, 4, 5, 0, 0, 1, 4, 1, 1, 0, 0, 0, 0]

2
src/main/java/org/lumijiez/parser/HelloWorld.tokens
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@@ -1,2 +0,0 @@
T__0=1
'Hello, World!'=1

51
src/main/java/org/lumijiez/parser/HelloWorldBaseListener.java
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@@ -1,51 +0,0 @@
package org.lumijiez.parser;// Generated from D:/Source/JavaProjects/dsl-formal-requirements/src/grammars/HelloWorld.g4 by ANTLR 4.13.1
import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.tree.ErrorNode;
import org.antlr.v4.runtime.tree.TerminalNode;
/**
* This class provides an empty implementation of {@link HelloWorldListener},
* which can be extended to create a listener which only needs to handle a subset
* of the available methods.
*/
@SuppressWarnings("CheckReturnValue")
public class HelloWorldBaseListener implements HelloWorldListener {
/**
* {@inheritDoc}
*
* <p>The default implementation does nothing.</p>
*/
@Override public void enterStart(HelloWorldParser.StartContext ctx) { }
/**
* {@inheritDoc}
*
* <p>The default implementation does nothing.</p>
*/
@Override public void exitStart(HelloWorldParser.StartContext ctx) { }
/**
* {@inheritDoc}
*
* <p>The default implementation does nothing.</p>
*/
@Override public void enterEveryRule(ParserRuleContext ctx) { }
/**
* {@inheritDoc}
*
* <p>The default implementation does nothing.</p>
*/
@Override public void exitEveryRule(ParserRuleContext ctx) { }
/**
* {@inheritDoc}
*
* <p>The default implementation does nothing.</p>
*/
@Override public void visitTerminal(TerminalNode node) { }
/**
* {@inheritDoc}
*
* <p>The default implementation does nothing.</p>
*/
@Override public void visitErrorNode(ErrorNode node) { }
}

21
src/main/java/org/lumijiez/parser/HelloWorldBaseVisitor.java
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@@ -1,21 +0,0 @@
package org.lumijiez.parser;// Generated from D:/Source/JavaProjects/dsl-formal-requirements/src/grammars/HelloWorld.g4 by ANTLR 4.13.1
import org.antlr.v4.runtime.tree.AbstractParseTreeVisitor;
/**
* This class provides an empty implementation of {@link HelloWorldVisitor},
* which can be extended to create a visitor which only needs to handle a subset
* of the available methods.
*
* @param <T> The return type of the visit operation. Use {@link Void} for
* operations with no return type.
*/
@SuppressWarnings("CheckReturnValue")
public class HelloWorldBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements HelloWorldVisitor<T> {
/**
* {@inheritDoc}
*
* <p>The default implementation returns the result of calling
* {@link #visitChildren} on {@code ctx}.</p>
*/
@Override public T visitStart(HelloWorldParser.StartContext ctx) { return visitChildren(ctx); }
}

20
src/main/java/org/lumijiez/parser/HelloWorldLexer.interp
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@@ -1,20 +0,0 @@
token literal names:
null
'Hello, World!'
token symbolic names:
null
null
rule names:
T__0
channel names:
DEFAULT_TOKEN_CHANNEL
HIDDEN
mode names:
DEFAULT_MODE
atn:
[4, 0, 1, 17, 6, -1, 2, 0, 7, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 16, 0, 1, 1, 0, 0, 0, 1, 3, 1, 0, 0, 0, 3, 4, 5, 72, 0, 0, 4, 5, 5, 101, 0, 0, 5, 6, 5, 108, 0, 0, 6, 7, 5, 108, 0, 0, 7, 8, 5, 111, 0, 0, 8, 9, 5, 44, 0, 0, 9, 10, 5, 32, 0, 0, 10, 11, 5, 87, 0, 0, 11, 12, 5, 111, 0, 0, 12, 13, 5, 114, 0, 0, 13, 14, 5, 108, 0, 0, 14, 15, 5, 100, 0, 0, 15, 16, 5, 33, 0, 0, 16, 2, 1, 0, 0, 0, 1, 0, 0]

123
src/main/java/org/lumijiez/parser/HelloWorldLexer.java
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@@ -1,123 +0,0 @@
package org.lumijiez.parser;// Generated from D:/Source/JavaProjects/dsl-formal-requirements/src/grammars/HelloWorld.g4 by ANTLR 4.13.1
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.TokenStream;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.misc.*;
@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast", "CheckReturnValue", "this-escape"})
public class HelloWorldLexer extends Lexer {
static { RuntimeMetaData.checkVersion("4.13.1", RuntimeMetaData.VERSION); }
protected static final DFA[] _decisionToDFA;
protected static final PredictionContextCache _sharedContextCache =
new PredictionContextCache();
public static final int
T__0=1;
public static String[] channelNames = {
"DEFAULT_TOKEN_CHANNEL", "HIDDEN"
};
public static String[] modeNames = {
"DEFAULT_MODE"
};
private static String[] makeRuleNames() {
return new String[] {
"T__0"
};
}
public static final String[] ruleNames = makeRuleNames();
private static String[] makeLiteralNames() {
return new String[] {
null, "'Hello, World!'"
};
}
private static final String[] _LITERAL_NAMES = makeLiteralNames();
private static String[] makeSymbolicNames() {
return new String[] {
};
}
private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
/**
* @deprecated Use {@link #VOCABULARY} instead.
*/
@Deprecated
public static final String[] tokenNames;
static {
tokenNames = new String[_SYMBOLIC_NAMES.length];
for (int i = 0; i < tokenNames.length; i++) {
tokenNames[i] = VOCABULARY.getLiteralName(i);
if (tokenNames[i] == null) {
tokenNames[i] = VOCABULARY.getSymbolicName(i);
}
if (tokenNames[i] == null) {
tokenNames[i] = "<INVALID>";
}
}
}
@Override
@Deprecated
public String[] getTokenNames() {
return tokenNames;
}
@Override
public Vocabulary getVocabulary() {
return VOCABULARY;
}
public HelloWorldLexer(CharStream input) {
super(input);
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
}
@Override
public String getGrammarFileName() { return "HelloWorld.g4"; }
@Override
public String[] getRuleNames() { return ruleNames; }
@Override
public String getSerializedATN() { return _serializedATN; }
@Override
public String[] getChannelNames() { return channelNames; }
@Override
public String[] getModeNames() { return modeNames; }
@Override
public ATN getATN() { return _ATN; }
public static final String _serializedATN =
"\u0004\u0000\u0001\u0011\u0006\uffff\uffff\u0002\u0000\u0007\u0000\u0001"+
"\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001"+
"\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001"+
"\u0000\u0001\u0000\u0000\u0000\u0001\u0001\u0001\u0001\u0000\u0000\u0010"+
"\u0000\u0001\u0001\u0000\u0000\u0000\u0001\u0003\u0001\u0000\u0000\u0000"+
"\u0003\u0004\u0005H\u0000\u0000\u0004\u0005\u0005e\u0000\u0000\u0005\u0006"+
"\u0005l\u0000\u0000\u0006\u0007\u0005l\u0000\u0000\u0007\b\u0005o\u0000"+
"\u0000\b\t\u0005,\u0000\u0000\t\n\u0005 \u0000\u0000\n\u000b\u0005W\u0000"+
"\u0000\u000b\f\u0005o\u0000\u0000\f\r\u0005r\u0000\u0000\r\u000e\u0005"+
"l\u0000\u0000\u000e\u000f\u0005d\u0000\u0000\u000f\u0010\u0005!\u0000"+
"\u0000\u0010\u0002\u0001\u0000\u0000\u0000\u0001\u0000\u0000";
public static final ATN _ATN =
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
static {
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
}
}
}

2
src/main/java/org/lumijiez/parser/HelloWorldLexer.tokens
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@@ -1,2 +0,0 @@
T__0=1
'Hello, World!'=1

19
src/main/java/org/lumijiez/parser/HelloWorldListener.java
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@@ -1,19 +0,0 @@
package org.lumijiez.parser;// Generated from D:/Source/JavaProjects/dsl-formal-requirements/src/grammars/HelloWorld.g4 by ANTLR 4.13.1
import org.antlr.v4.runtime.tree.ParseTreeListener;
/**
* This interface defines a complete listener for a parse tree produced by
* {@link HelloWorldParser}.
*/
public interface HelloWorldListener extends ParseTreeListener {
/**
* Enter a parse tree produced by {@link HelloWorldParser#start}.
* @param ctx the parse tree
*/
void enterStart(HelloWorldParser.StartContext ctx);
/**
* Exit a parse tree produced by {@link HelloWorldParser#start}.
* @param ctx the parse tree
*/
void exitStart(HelloWorldParser.StartContext ctx);
}

149
src/main/java/org/lumijiez/parser/HelloWorldParser.java
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@@ -1,149 +0,0 @@
// Generated from D:/Source/JavaProjects/dsl-formal-requirements/src/grammars/HelloWorld.g4 by ANTLR 4.13.1
package org.lumijiez.parser;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.misc.*;
import org.antlr.v4.runtime.tree.*;
import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;
@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast", "CheckReturnValue"})
public class HelloWorldParser extends Parser {
static { RuntimeMetaData.checkVersion("4.13.1", RuntimeMetaData.VERSION); }
protected static final DFA[] _decisionToDFA;
protected static final PredictionContextCache _sharedContextCache =
new PredictionContextCache();
public static final int
T__0=1;
public static final int
RULE_start = 0;
private static String[] makeRuleNames() {
return new String[] {
"start"
};
}
public static final String[] ruleNames = makeRuleNames();
private static String[] makeLiteralNames() {
return new String[] {
null, "'Hello, World!'"
};
}
private static final String[] _LITERAL_NAMES = makeLiteralNames();
private static String[] makeSymbolicNames() {
return new String[] {
};
}
private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
/**
* @deprecated Use {@link #VOCABULARY} instead.
*/
@Deprecated
public static final String[] tokenNames;
static {
tokenNames = new String[_SYMBOLIC_NAMES.length];
for (int i = 0; i < tokenNames.length; i++) {
tokenNames[i] = VOCABULARY.getLiteralName(i);
if (tokenNames[i] == null) {
tokenNames[i] = VOCABULARY.getSymbolicName(i);
}
if (tokenNames[i] == null) {
tokenNames[i] = "<INVALID>";
}
}
}
@Override
@Deprecated
public String[] getTokenNames() {
return tokenNames;
}
@Override
public Vocabulary getVocabulary() {
return VOCABULARY;
}
@Override
public String getGrammarFileName() { return "HelloWorld.g4"; }
@Override
public String[] getRuleNames() { return ruleNames; }
@Override
public String getSerializedATN() { return _serializedATN; }
@Override
public ATN getATN() { return _ATN; }
public HelloWorldParser(TokenStream input) {
super(input);
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
}
@SuppressWarnings("CheckReturnValue")
public static class StartContext extends ParserRuleContext {
public TerminalNode EOF() { return getToken(HelloWorldParser.EOF, 0); }
public StartContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_start; }
@Override
public void enterRule(ParseTreeListener listener) {
if ( listener instanceof HelloWorldListener ) ((HelloWorldListener)listener).enterStart(this);
}
@Override
public void exitRule(ParseTreeListener listener) {
if ( listener instanceof HelloWorldListener ) ((HelloWorldListener)listener).exitStart(this);
}
@Override
public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
if ( visitor instanceof HelloWorldVisitor ) return ((HelloWorldVisitor<? extends T>)visitor).visitStart(this);
else return visitor.visitChildren(this);
}
}
public final StartContext start() throws RecognitionException {
StartContext _localctx = new StartContext(_ctx, getState());
enterRule(_localctx, 0, RULE_start);
try {
enterOuterAlt(_localctx, 1);
{
setState(2);
match(T__0);
setState(3);
match(EOF);
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static final String _serializedATN =
"\u0004\u0001\u0001\u0006\u0002\u0000\u0007\u0000\u0001\u0000\u0001\u0000"+
"\u0001\u0000\u0001\u0000\u0000\u0000\u0001\u0000\u0000\u0000\u0004\u0000"+
"\u0002\u0001\u0000\u0000\u0000\u0002\u0003\u0005\u0001\u0000\u0000\u0003"+
"\u0004\u0005\u0000\u0000\u0001\u0004\u0001\u0001\u0000\u0000\u0000\u0000";
public static final ATN _ATN =
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
static {
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
}
}
}

18
src/main/java/org/lumijiez/parser/HelloWorldVisitor.java
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@@ -1,18 +0,0 @@
package org.lumijiez.parser;// Generated from D:/Source/JavaProjects/dsl-formal-requirements/src/grammars/HelloWorld.g4 by ANTLR 4.13.1
import org.antlr.v4.runtime.tree.ParseTreeVisitor;
/**
* This interface defines a complete generic visitor for a parse tree produced
* by {@link HelloWorldParser}.
*
* @param <T> The return type of the visit operation. Use {@link Void} for
* operations with no return type.
*/
public interface HelloWorldVisitor<T> extends ParseTreeVisitor<T> {
/**
* Visit a parse tree produced by {@link HelloWorldParser#start}.
* @param ctx the parse tree
* @return the visitor result
*/
T visitStart(HelloWorldParser.StartContext ctx);
}

5
src/main/resources/TestProgram.txt Normal file
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@@ -0,0 +1,5 @@
DatabaseAccess:
("UserIsAuthenticated" && "UserHasPermission") => ("AccessToAdminPanel" || "AccessToModeratorPanel");
GetUserList():
("Return" : "int x, float y", "Execution Time" : "<1s");