Method macroImport

src/org/apache/pig/parser/QueryParserDriver.java:517–580

(CommonTree t)

    }

    private void macroImport(CommonTree t) throws ParserException {
        // remove quote
        String fname = t.getChild(0).getText();
        fname = QueryParserUtils.removeQuotes(fname);
        if (!importSeen.add(fname)) {
            // we've already imported this file, so just skip this import statement
            LOG.debug("Ignoring duplicated import " + fname);
            t.getParent().deleteChild(t.getChildIndex());
            return;
        }

        Tree macroAST = null;
        if (pigContext.macros.containsKey(fname)) {
            macroAST = pigContext.macros.get(fname);
        } else {
            FetchFileRet localFileRet = getMacroFile(fname);

            BufferedReader in = null;
            try {
                in = new BufferedReader(new FileReader(localFileRet.file));
            } catch (FileNotFoundException e) {
                String msg = getErrorMessage(fname, t,
                        "Failed to import file '" + fname + "'", e.getMessage());
                throw new ParserException(msg);
            }

            StringBuilder sb = new StringBuilder();
            String line = null;
            try {
                line = in.readLine();
                while (line != null) {
                    sb.append(line).append("\n");
                    line = in.readLine();
                }
            } catch (IOException e) {
                String msg = getErrorMessage(fname, t,
                        "Failed to read file '" + fname + "'", e.getMessage());
                throw new ParserException(msg);
            }

            String macroText = null;
            try {
                in.close();
                in = new BufferedReader(new StringReader(sb.toString()));
                macroText = pigContext.doParamSubstitution(in);
            } catch (IOException e) {
                String msg = getErrorMessage(fname, t,
                    "Parameter sustitution failed for macro.", e.getMessage());
                throw new ParserException(msg);
            }

            // parse
            CommonTokenStream tokenStream = tokenize(macroText, fname);

            try {
                macroAST = parse( tokenStream );
                pigContext.macros.put(fname, macroAST);
            } catch(RuntimeException ex) {