Method nameOrLabel

rhino/src/main/java/org/mozilla/javascript/Parser.java:2410–2466

Found a name in a statement context. If it's a label, we gather up any following labels and the next non-label statement into a LabeledStatement "bundle" and return that. Otherwise we parse an expression and return it wrapped in an ExpressionStatement.

()

     * Otherwise we parse an expression and return it wrapped in an {@link ExpressionStatement}.
     */
    private AstNode nameOrLabel() throws IOException {
        if (currentToken != Token.NAME) throw codeBug();
        int pos = ts.tokenBeg;

        // set check for label and call down to primaryExpr
        currentFlaggedToken |= TI_CHECK_LABEL;
        AstNode expr = expr(false);

        if (expr.getType() != Token.LABEL) {
            AstNode n = new ExpressionStatement(expr, !insideFunctionBody());
            n.setLineColumnNumber(expr.getLineno(), expr.getColumn());
            return n;
        }

        LabeledStatement bundle = new LabeledStatement(pos);
        recordLabel((Label) expr, bundle);
        bundle.setLineColumnNumber(expr.getLineno(), expr.getColumn());
        // look for more labels
        AstNode stmt = null;
        while (peekToken() == Token.NAME) {
            currentFlaggedToken |= TI_CHECK_LABEL;
            expr = expr(false);
            if (expr.getType() != Token.LABEL) {
                stmt = new ExpressionStatement(expr, !insideFunctionBody());
                autoInsertSemicolon(stmt);
                break;
            }
            recordLabel((Label) expr, bundle);
        }

        // no more labels; now parse the labeled statement
        try {
            currentLabel = bundle;
            if (stmt == null) {
                stmt = statementHelper();
                int ntt = peekToken();
                if (ntt == Token.COMMENT
                        && stmt.getLineno()
                                == scannedComments.get(scannedComments.size() - 1).getLineno()) {
                    stmt.setInlineComment(scannedComments.get(scannedComments.size() - 1));
                    consumeToken();
                }
            }
        } finally {
            currentLabel = null;
            // remove the labels for this statement from the global set
            for (Label lb : bundle.getLabels()) {
                labelSet.remove(lb.getName());
            }
        }

        // If stmt has parent assigned its position already is relative
        // (See bug #710225)
        bundle.setLength(stmt.getParent() == null ? getNodeEnd(stmt) - pos : getNodeEnd(stmt));
        bundle.setStatement(stmt);
        return bundle;
    }