private static void print(StringBuilder builder, Tree node, String prefix, boolean isTail) {
final String name =
node.getText() == null ? "" : node.getText().replaceAll("\r\n|\r|\n", "\u23CE");
builder
.append(prefix)
.append(isTail ? "└─ " : "├─ ") //
.append(String.format("%04d", node.getLine())) //
.append(':')
.append(String.format("%04d", node.getCharPositionInLine()))
.append(' ') //
.append(String.format("%02d", node.getType()))
.append(": ")
.append(name) //
.append("\n");
for (int i = 0; i < (node.getChildCount() - 1); i++) {
CommonTreePrinter.print(
builder, node.getChild(i), prefix + (isTail ? " " : "│ "), false);
}
if (node.getChildCount() >= 1) {
CommonTreePrinter.print(
builder,
node.getChild(node.getChildCount() - 1),
prefix + (isTail ? " " : "│ "),
true);
}
}
public Return(Tree tree, ErrorsCollector ec, SymbolTable st) {
assert (tree.getType() == CommonCppWithStreamsLexer.RETURN);
assert (tree.getChildCount() <= 1);
expr = null;
Tree p = tree.getParent();
while (p != null && p.getType() != CommonCppWithStreamsLexer.FUNCTION) {
p = p.getParent();
}
if (p == null) {
ec.check(false, tree.getLine(), "return from no function");
return;
}
assert (p.getChild(1).getType() == CommonCppWithStreamsLexer.NAME);
Function funcDef = st.referenceFunctionAndGetIt(p.getChild(1).getText(), tree.getLine());
assert (funcDef != null);
funcName = funcDef.getName();
if (funcDef.getType() == Type.VOID) {
ec.check(
tree.getChildCount() == 0,
tree.getLine(),
"can not return value out of 'void' function '" + funcName + "'");
} else {
if (tree.getChildCount() != 1) {
ec.check(
false,
tree.getLine(),
"can not return from '"
+ TypeConverter.typeToString(funcDef)
+ "' function '"
+ funcName
+ "' without returning a value");
return;
}
expr = new Expression(tree.getChild(0), ec, st);
}
}
@Override
public int getLine() {
int line = 0;
if (token != null) {
line = token.getLine();
}
if (line == 0) {
Tree child = getChild(0);
if (child != null) {
line = child.getLine();
}
}
return line;
}
public FilteredTreeNodeStream(Tree tree, Filter f) {
this.tokenizer = new FilteringTokenizer(tree);
final boolean success = new BracketedFilter(f).filter(this.tokenizer);
if (success) {
this.tokens = new ArrayList<Tree>(this.tokenizer.getConsumedTokens());
if (DEBUG) {
for (Tree t : this.tokens) {
System.out.println(
"--> " + t + "; line " + t.getLine() + ", char " + t.getCharPositionInLine());
}
}
} else {
// TODO Flag the mismatch somehow.
this.tokens = new ArrayList<Tree>(0);
}
}
private String _source(Tree ast) {
return String.format(SOURCE_FILE_FORMAT, sourceFile, ast.getLine());
}
