private Node parseBlock() {
Token token = expect(Block.class);
Block block = (Block) token;
String mode = block.getMode();
String name = block.getValue().trim();
Node blockNode;
if (peek() instanceof Indent) {
blockNode = block();
} else {
blockNode = new BlockNode();
blockNode.setLineNumber(block.getLineNumber());
blockNode.setFileName(filename);
}
((BlockNode) blockNode).setMode(mode);
if (blocks.containsKey(name)) {
BlockNode prev = (BlockNode) blocks.get(name);
if ("append".equals(prev.getMode())) {
blockNode.getNodes().addAll(prev.getNodes());
}
if ("prepend".equals(prev.getMode())) {
blockNode.getNodes().addAll(0, prev.getNodes());
}
if ("replace".equals(prev.getMode())) {
blockNode = prev;
}
}
blocks.put(name, blockNode);
return blockNode;
}
private Node blockExpansion() {
if (peek() instanceof Colon) {
Token token = expect(Colon.class);
Colon colon = (Colon) token;
BlockNode block = new BlockNode();
block.setLineNumber(colon.getLineNumber());
block.setFileName(filename);
block.getNodes().add(parseExpr());
return block;
}
return block();
}