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import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import javax.swing.*;
import org.antlr.v4.gui.TreeViewer;
import org.antlr.v4.runtime.*;
import ast.*;
import ast.nodes.*;
import parser.*;
import semanticanalysis.*;
public class Main {
public static void main(String[] args) {
// for (File file : Objects.requireNonNull(new File("./progs/").listFiles())) {
try {
// String fileStr = file.getPath();
// FIXME: use the fileStr above
String fileStr = "./progs/test.py";
System.out.println(fileStr);
System.out.println(readFile(fileStr));
CharStream cs = CharStreams.fromFileName(fileStr);
Python3Lexer lexer = new Python3Lexer(cs);
CommonTokenStream tokens = new CommonTokenStream(lexer);
Python3Parser parser = new Python3Parser(tokens);
Python3Parser.RootContext tree = parser.root();
// DEBUG
// {
// tokens.fill();
// for (Token token : tokens.getTokens()) {
// System.out.println(token.toString());
// }
//
// System.out.println("Tree: " + tree);
// }
JFrame frame = new JFrame("Parse Tree");
JPanel panel = new JPanel();
TreeViewer viewer = new TreeViewer(Arrays.asList(parser.getRuleNames()),
tree);
viewer.setScale(1.5); // Zoom factor
panel.add(viewer);
frame.add(panel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(800, 600);
frame.setVisible(true);
if (tree == null) {
System.err.println("The tree is null.");
return;
}
if (parser.getNumberOfSyntaxErrors() > 0) {
System.err.println("Error on program parsing.");
return;
}
Python3VisitorImpl visitor = new Python3VisitorImpl();
SymbolTable ST = new SymbolTable();
Node ast = visitor.visit(tree);
ArrayList<SemanticError> errors = ast.checkSemantics(ST, 0);
if (errors.size() > 0) {
System.out.println("You had: " + errors.size() + " errors:");
for (SemanticError e : errors) {
System.out.println("\t" + e);
}
} else {
System.out.println("Visualizing AST...");
System.out.println(ast.toPrint(""));
}
} catch (Exception e) {
e.printStackTrace();
}
// }
}
private static String readFile(String filePath) throws IOException {
StringBuilder content = new StringBuilder();
try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
String line;
while ((line = reader.readLine()) != null) {
content.append(line).append("\n");
}
}
return content.toString();
}
}
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