Class PigMacro

src/org/apache/pig/parser/PigMacro.java:45–501

import org.apache.pig.tools.parameters.PreprocessorContext;

class PigMacro {

    private static final Log LOG = LogFactory.getLog(PigMacro.class);

    private String fileName;
    private String name;
    private String body;
    private List<String> params;
    private List<String> rets;
    private Map<String, PigMacro> seen;
    private Set<String> macroStack;
    private PigContext pigContext;
    private long idx = 0;
    
    // The start line number of this macro in the script
    private int startLine = 0;

    PigMacro(String name, String file, List<String> params,
            List<String> returns, String body, Map<String, PigMacro> seen) {
        this.name = name;
        this.params = (params == null) ? new ArrayList<String>() : params;
        this.rets = (returns == null) ? new ArrayList<String>() : returns;
        this.fileName = file;
        this.body = body;
        this.seen = seen;
        this.macroStack = new HashSet<String>(); 
        LOG.debug("Macro '" + name + "' is defined");
    }
    
    String getName() { return name; }
    
    void setStack(Set<String> stack) {
        macroStack = stack;
    }

    Set<String> getStack() { return macroStack; }
    
    void setStartLine(int start) {
        this.startLine = start;
    }
    
    int getStartLine() {
        return startLine;
    }

    void setPigContext(PigContext pigContext) {
        this.pigContext = pigContext;
    }
    
    private CommonTree inline(String[] inputs, String[] outputs, CommonTree t,
            String file) throws ParserException {
        String in = substituteParams(inputs, outputs, t.getLine(), file);
        
        Set<String> masks = new HashSet<String>();
        if (inputs != null) {
            for (String s : inputs) {
                masks.add(s);
            }