blob: f53b410e3ce1e72a6f36fa192fd9d3df415b346e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
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.*;
import semanticanalysis.Share;
public class Main {
public static void main(String[] args) {
if (args.length != 1) {
System.err
.println(
"You must execute this program with a file parameter.\nUsage: java -cp lib/antlr-4.13.1-complete.jar:out Main <file.py>");
return;
}
try {
String fileStr = args[0];
System.out.println(fileStr);
System.out.println(Share.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();
JFrame frame = new JFrame("Parse Tree");
JPanel panel = new JPanel();
TreeViewer viewer = new TreeViewer(Arrays.asList(parser.getRuleNames()),
tree);
viewer.setScale(1); // 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> errorsWithDup = ast.checkSemantics(ST, 0);
ArrayList<SemanticError> errors = Share.removeDuplicates(errorsWithDup);
if (!errors.isEmpty()) {
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();
}
}
}
|
