Examples with OperatorType priv.bajdcc.LALR1.syntax.token.OperatorType used on opensource projects

Example 6 with OperatorType

use of priv.bajdcc.LALR1.syntax.token.OperatorType in project jMiniLang by bajdcc.

the class TestOperator method main.

public static void main(String[] args) {
    // System.out.println("Z -> `a`<,> | B | [`a` `b` Z B]");
    try {
        // Scanner scanner = new Scanner(System.in);
        // String expr = "( i )";
        // String expr = "((3))+4*5+66/(3-8)";
        // String expr = "(4 * 7 - 13) * (3 + 18 / 3 - 3)";
        String expr = "(5 + 5)";
        Semantic semantic = new Semantic(expr);
        semantic.addTerminal("PLUS", TokenType.OPERATOR, OperatorType.PLUS);
        semantic.addTerminal("MINUS", TokenType.OPERATOR, OperatorType.MINUS);
        semantic.addTerminal("TIMES", TokenType.OPERATOR, OperatorType.TIMES);
        semantic.addTerminal("DIVIDE", TokenType.OPERATOR, OperatorType.DIVIDE);
        semantic.addTerminal("LPA", TokenType.OPERATOR, OperatorType.LPARAN);
        semantic.addTerminal("RPA", TokenType.OPERATOR, OperatorType.RPARAN);
        semantic.addTerminal("INTEGER", TokenType.INTEGER, null);
        semantic.addNonTerminal("Z");
        semantic.addNonTerminal("E");
        semantic.addNonTerminal("T");
        semantic.addNonTerminal("F");
        semantic.addActionHandler("enter_paran", (indexed, manage, access, recorder) -> System.out.println("enter"));
        semantic.addActionHandler("leave_paran", (indexed, manage, access, recorder) -> System.out.println("leave"));
        semantic.addErrorHandler("lost_exp", (iterator, bag) -> {
            bag.bRead = false;
            bag.bPass = true;
            return "表达式不完整";
        });
        semantic.addErrorHandler("lost_exp_right", (iterator, bag) -> {
            bag.bRead = false;
            bag.bPass = true;
            return "缺少右括号";
        });
        ISemanticAnalyzer handleCopy = (indexed, query, recorder) -> indexed.get(0).object;
        ISemanticAnalyzer handleBinop = (indexed, query, recorder) -> {
            int lop = Integer.parseInt(indexed.get(0).object.toString());
            int rop = Integer.parseInt(indexed.get(2).object.toString());
            Token op = indexed.get(1).token;
            if (op.kToken == TokenType.OPERATOR) {
                OperatorType kop = (OperatorType) op.object;
                switch(kop) {
                    case PLUS:
                        return lop + rop;
                    case MINUS:
                        return lop - rop;
                    case TIMES:
                        return lop * rop;
                    case DIVIDE:
                        if (rop == 0) {
                            return lop;
                        } else {
                            return lop / rop;
                        }
                    default:
                        return 0;
                }
            } else {
                return 0;
            }
        };
        ISemanticAnalyzer handleValue = (indexed, query, recorder) -> indexed.get(0).token.object;
        // syntax.infer("E -> T `PLUS`<+> E | T `MINUS`<-> E | T");
        // syntax.infer("T -> F `TIMES`<*> T | F `DIVIDE`</> T | F");
        // syntax.infer("F -> `LPA`<(> E `RPA`<)>  | `SYMBOL`<i>");
        semantic.infer(handleCopy, "Z -> E[0]");
        semantic.infer(handleCopy, "E -> T[0]");
        semantic.infer(handleBinop, "E -> E[0] ( @PLUS[1]<+> | @MINUS[1]<-> ) T[2]{lost_exp}");
        semantic.infer(handleCopy, "T -> F[0]");
        semantic.infer(handleBinop, "T -> T[0] ( @TIMES[1]<*> | @DIVIDE[1]</> ) F[2]{lost_exp}");
        semantic.infer(handleValue, "F -> @INTEGER[0]<integer>");
        semantic.infer(handleCopy, "F -> @LPA#enter_paran#<(> E[0]{lost_exp} @RPA#leave_paran#{lost_exp_right}<)>");
        semantic.initialize("Z");
        // System.out.println(semantic.toString());
        // System.out.println(semantic.getNGAString());
        // System.out.println(semantic.getNPAString());
        // System.out.println(semantic.getInst());
        System.out.println(semantic.getTrackerError());
        System.out.println(semantic.getTokenList());
        System.out.println(semantic.getObject());
    // scanner.close();
    } catch (RegexException e) {
        System.err.println(e.getPosition() + "," + e.getMessage());
        e.printStackTrace();
    } catch (SyntaxException e) {
        System.err.println(e.getPosition() + "," + e.getMessage() + " " + e.getInfo());
        e.printStackTrace();
    }
}

Example 7 with OperatorType

use of priv.bajdcc.LALR1.syntax.token.OperatorType in project jMiniLang by bajdcc.

the class Syntax method doAnalysis.

/**
 * 分析表达式
 *
 * @param type
 *            结束类型
 * @param obj
 *            结束数据
 * @return 表达式树根结点
 * @throws SyntaxException 词法错误
 */
private ISyntaxComponent doAnalysis(TokenType type, Object obj) throws SyntaxException {
    /* 新建序列用于存放结果 */
    SequenceExp sequence = new SequenceExp();
    /* 可能会使用的分支 */
    BranchExp branch = null;
    /* 添加子结点接口 */
    IExpCollction collection = sequence;
    /* 表达式通用接口 */
    ISyntaxComponent result = sequence;
    for (; ; ) {
        if ((token.kToken == type && (token.object == null || token.object.equals(obj)))) {
            // 结束字符
            if (syntaxLexer.index() == 0) {
                // 表达式为空
                err(SyntaxError.NULL);
            } else if (collection.isEmpty()) {
                // 部件为空
                err(SyntaxError.INCOMPLETE);
            } else {
                next();
                // 正常终止
                break;
            }
        } else if (token.kToken == TokenType.EOF) {
            err(SyntaxError.INCOMPLETE);
        }
        // 当前待赋值的表达式
        ISyntaxComponent exp = null;
        switch(token.kToken) {
            case OPERATOR:
                OperatorType op = (OperatorType) token.object;
                next();
                switch(op) {
                    case ALTERNATIVE:
                        if (// 在此之前没有存储表达式 (|...)
                        collection.isEmpty()) {
                            err(SyntaxError.INCOMPLETE);
                        } else {
                            if (branch == null) {
                                // 分支为空，则建立分支
                                branch = new BranchExp();
                                // 用新建的分支包含并替代当前序列
                                branch.add(sequence);
                                result = branch;
                            }
                            // 新建一个序列
                            sequence = new SequenceExp();
                            branch.add(sequence);
                            continue;
                        }
                        break;
                    case // '('
                    LPARAN:
                        // 递归分析
                        exp = doAnalysis(TokenType.OPERATOR, OperatorType.RPARAN);
                        break;
                    case // '['
                    LSQUARE:
                        // 递归分析
                        exp = doAnalysis(TokenType.OPERATOR, OperatorType.RSQUARE);
                        // 包装
                        OptionExp option = new OptionExp();
                        option.expression = exp;
                        exp = option;
                        break;
                    default:
                        err(SyntaxError.SYNTAX);
                        break;
                }
                break;
            case EOF:
                return result;
            case TERMINAL:
                exp = matchTerminal();
                next();
                PropertyExp property1 = matchStorage(exp, token.object);
                exp = property1;
                if (token.kToken == TokenType.ACTION) {
                    property1.actionHandler = matchAction();
                    next();
                }
                if (token.kToken == TokenType.HANDLER) {
                    property1.errorHandler = matchHandler();
                    next();
                }
                break;
            case NONTERMINAL:
                exp = matchNonTerminal();
                next();
                PropertyExp property2 = matchStorage(exp, token.object);
                exp = property2;
                if (token.kToken == TokenType.ACTION) {
                    property2.actionHandler = matchAction();
                    next();
                }
                if (token.kToken == TokenType.HANDLER) {
                    property2.errorHandler = matchHandler();
                    next();
                }
                break;
            default:
                err(SyntaxError.SYNTAX);
                break;
        }
        if (exp != null) {
            sequence.add(exp);
        }
    }
    return result;
}