Esempio n. 1
0
 public Syntax getSyntaxRule(CTX ctx, List<Token> tls, int s, int e) {
   Token tk = tls.get(s);
   if (tk.kw.equals(KW.Type)) {
     tk = lookAhead(ctx, tls, s + 1, e);
     if (tk != null && (tk.tt == TK.SYMBOL || tk.tt == TK.USYMBOL)) {
       tk = lookAhead(ctx, tls, s + 2, e);
       if (tk != null && (tk.tt == TK.AST_PARENTHESIS || tk.kw.equals(KW.DOT))) {
         return syntax(ctx, KW.StmtMethodDecl); //
       }
       return syntax(ctx, KW.StmtTypeDecl); //
     }
     return syntax(ctx, KW.Expr); // expression
   }
   Syntax syn = syntax(ctx, tk.kw);
   if (syn.syntaxRuleNULL == null) {
     ctx.DBG_P(
         "kw='%s', %d, %d",
         syn.kw, 0,
         0); // TODO syn.ParseExpr == kmodsugar.UndefinedParseExpr, kmodsugar.UndefinedExprTyCheck
             // == syn.ExprTyCheck);
     int i;
     for (i = s + 1; i < e; i++) {
       tk = tls.get(i);
       syn = syntax(ctx, tk.kw);
       if (syn.syntaxRuleNULL != null && syn.priority > 0) {
         ctx.SUGAR_P(System.out, tk.uline, tk.lpos, "binary operator syntax kw='%s'", syn.kw);
         return syn;
       }
     }
     return syntax(ctx, KW.Expr);
   }
   return syn;
 }
Esempio n. 2
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 public void tokenize(CTX ctx, String source, long uline, List<Token> toks) {
   int i, pos = toks.size();
   TEnv tenv = new TEnv(source, uline, toks, 4, this);
   Tokenizer.tokenize(ctx, tenv);
   if (uline == 0) {
     for (i = pos; i < toks.size(); i++) {
       toks.get(i).uline = 0;
     }
   }
 }
Esempio n. 3
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 public KObject eval(CTX ctx, String script, long uline) {
   ctx.gamma = new Gamma();
   ctx.gamma.ks = this;
   List<Token> tls = new ArrayList<Token>();
   int pos = tls.size();
   tokenize(ctx, script, uline, tls);
   Block bk = Parser.newBlock(ctx, this, null, tls, pos, tls.size(), ';');
   KArray.clear(tls, pos);
   return evalBlock(ctx, bk);
 }
Esempio n. 4
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 private int findTopCh(CTX ctx, List<Token> tls, int s, int e, int tt, int closech) {
   for (int i = s; i < e; i++) {
     Token tk = tls.get(i);
     if (tk.tt == tt && tk.text.charAt(0) == closech) return i;
   }
   return e;
 }
Esempio n. 5
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 private boolean makeSyntaxRule(CTX ctx, List<Token> tls, int s, int e, List<Token> adst) {
   String nameid = null;
   for (int i = s; i < e; i++) {
     Token tk = tls.get(i);
     if (tk.tt == TK.INDENT) continue;
     if (tk.tt == TK.TEXT) {
       int[] ia = new int[] {i};
       if (checkNestedSyntax(ctx, tls, ia, e, TK.AST_PARENTHESIS, '(', ')')
           || checkNestedSyntax(ctx, tls, ia, e, TK.AST_BRANCET, '[', ']')
           || checkNestedSyntax(ctx, tls, ia, e, TK.AST_BRACE, '{', '}')) {
         i = ia[0];
       } else {
         tk.tt = TK.CODE;
         tk.kw = tk.text;
       }
       adst.add(tk);
       continue;
     }
     if (tk.tt == TK.SYMBOL || tk.tt == TK.USYMBOL) {
       if (i > 0 && tls.get(i - 1).topch == '$') {
         tk.kw = "$" + tk.text;
         tk.tt = TK.METANAME;
         if (nameid == null) nameid = tk.kw;
         tk.nameid = nameid;
         nameid = null;
         adst.add(tk);
         continue;
       }
       if (i + 1 < e && tls.get(i + 1).topch == ':') {
         nameid = tls.get(i).text;
         i++;
         continue;
       }
     }
     if (tk.tt == TK.OPERATOR) {
       int[] ia = new int[] {i};
       if (checkNestedSyntax(ctx, tls, ia, e, TK.AST_OPTIONAL, '[', ']')) {
         adst.add(tk);
         i = ia[0];
         continue;
       }
       if (tls.get(i).topch == '$') continue;
     }
     return false;
   }
   return true;
 }
Esempio n. 6
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 private boolean checkNestedSyntax(
     CTX ctx, List<Token> tls, int[] s, int e, int tt, int opench, int closech) {
   int i = s[0];
   Token tk = tls.get(i);
   String t = tk.text;
   if (t.length() == 1 && t.charAt(0) == opench) {
     int ne = findTopCh(ctx, tls, i + 1, e, tk.tt, closech);
     tk.tt = tt;
     if (tt >= 0 && tt < KW.TK_KW.length) tk.kw = KW.TK_KW[tt];
     tk.sub = new ArrayList<Token>();
     tk.topch = opench;
     tk.closech = closech;
     makeSyntaxRule(ctx, tls, i + 1, ne, tk.sub);
     s[0] = ne;
     return true;
   }
   return false;
 }
Esempio n. 7
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 private Token lookAhead(CTX ctx, List<Token> tls, int s, int e) {
   return (s < e) ? tls.get(s) : null /*K_NULLTOKEN*/;
 }
Esempio n. 8
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 private void parseSyntaxRule(CTX ctx, String rule, long uline, List<Token> a) {
   List<Token> tls = new ArrayList<Token>();
   tokenize(ctx, rule, uline, tls);
   makeSyntaxRule(ctx, tls, 0, tls.size(), a);
 }