christoph/lecture-compilers
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add ast renaming

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2020-12-11 18:34:19 +01:00
parent 50a57387cc
commit 0f749106eb
1 changed files with 23 additions and 0 deletions
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23
src/main/java/parser/ASTCompacter.java
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@ -25,6 +25,8 @@ public final class ASTCompacter {
removed += change; removed += change;
} while (change != 0); } while (change != 0);
rename(tree);
log(tree.toString()); log(tree.toString());
log("\nCleaned Tree: " + removed + " nodes removed."); log("\nCleaned Tree: " + removed + " nodes removed.");
log("-".repeat(100)); log("-".repeat(100));
@ -136,4 +138,25 @@ public final class ASTCompacter {
return removed + toRemove.size(); return removed + toRemove.size();
} }
private static void rename(AST tree) {
rename(tree.getRoot());
log("-".repeat(100));
}
private static void rename(Node root) {
String newName = switch (root.getName()) {
case "EXPR_2", "EXPR_F" -> "EXPR";
default -> root.getName();
};
if (!newName.equals(root.getName())) {
log("Rename " + root.getName() + " to " + newName + ".");
}
root.setName(newName);
for (Node child : root.getChildren()) {
rename(child);
}
}
} }