Example usage for org.antlr.v4.runtime ANTLRInputStream LA

Introduction

In this page you can find the example usage for org.antlr.v4.runtime ANTLRInputStream LA.

Prototype

@Override
    public int LA(int i) 

Source Link

Usage

From source file:net.certiv.json.parser.LexerAdaptor.java

License:Open Source License

public boolean norLA(String... terminals) {
    ANTLRInputStream input = (ANTLRInputStream) getInputStream();

    for (String str : terminals) {
        int index = 0;
        for (int idx = 0; idx < str.length(); idx++) {
            if (input.LA(index + 1) == IntStream.EOF) {
                break;
            }/*w w w .  j av a2 s .  c om*/
            char s = str.charAt(idx);
            char la = (char) input.LA(index + 1);
            if (s != la) {
                break;
            }
            index++;
        }
        if (index == str.length()) {
            return false;
        }
    }
    return true;
}

---

From source file:net.certiv.json.parser.LexerAdaptor.java

License:Open Source License

public boolean norLB(String... terminals) {
    ANTLRInputStream input = (ANTLRInputStream) getInputStream();

    for (String str : terminals) {
        int index = 0;
        for (int idx = str.length() - 1; idx >= 0; idx--) {
            if (input.index() < str.length() - 1) {
                break;
            }//from w w  w. java 2 s  .  c o  m
            char s = str.charAt(idx);
            char lb = (char) input.LA(index - 1);
            if (s != lb) {
                break;
            }
            index--;
        }
        if (index * -1 == str.length()) {
            return false;
        }
    }
    return true;
}

---

From source file:net.certiv.json.parser.LexerAdaptor.java

License:Open Source License

public int skipToEol(ANTLRInputStream input, int index) {
    while (input.LA(index) != IntStream.EOF && input.LA(index) != '\n') {
        index++;/*from  w w  w  . j av  a2  s . c om*/
    }
    return index;
}

---

From source file:net.certiv.json.parser.LexerAdaptor.java

License:Open Source License

public int skipToEoc(ANTLRInputStream input, int index) {
    while (input.LA(index) != IntStream.EOF) {
        if (input.LA(index) == '/' && input.LA(index - 1) == '*') {
            return index;
        }/*from   w  w w.j  a va  2  s.  co  m*/
        index++;
    }
    return index;
}

---