Package org.elegant.aash.comparator.parsing.expr

Examples of org.elegant.aash.comparator.parsing.expr.Expression

25
26
27
28
29
30
31
32
33
34
35
      throw new ParsingException(stream, stream.syntaxError("dotted expression expected"));
    }
    DottedExpression expr = new DottedExpression(sVarName);
    stream.ignoreBlanks();
    if (stream.isEqualTo('[')) {
      Expression indexExpr = parseExpression(stream);
      stream.ignoreBlanks();
      if (!stream.isEqualTo(']')) {
        throw new ParsingException(stream, stream.syntaxError("']' expected"));
      }
      expr.setIndex(indexExpr);
View Full Code Here
45
46
47
48
49
50
51
52
53
54
55
56
57
58
  private static Expression parseExpression(ParsingTools stream) throws IOException {
    return parseBooleanExpression(stream);
  }

  private static Expression parseBooleanExpression(ParsingTools stream) throws IOException {
    Expression expr = parseComparisonExpression(stream);
    stream.ignoreBlanks();
    while (stream.lookAhead('&') || stream.lookAhead('|')) {
      char cOp = (char) stream.readChar();
      Expression right = parseComparisonExpression(stream);
      expr = new BooleanExpression(expr, cOp, right);
    }
    return expr;
  }
View Full Code Here
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
    }
    return expr;
  }

  private static Expression parseComparisonExpression(ParsingTools stream) throws IOException {
    Expression expr = parseArithmeticExpression(stream);
    stream.ignoreBlanks();
    char cOp = '\0';
    if (stream.isEqualTo("<=")) {
      cOp = 'i';
    } else if (stream.isEqualTo(">=")) {
      cOp = 's';
    } else if (stream.isEqualTo("==")) {
      cOp = '=';
    } else if (stream.isEqualTo("!=")) {
      cOp = '!';
    } else if (stream.isEqualTo("<")) {
      cOp = '<';
    } else if (stream.isEqualTo(">")) {
      cOp = '>';
    } else if (stream.isEqualToIdentifier("in")) {
      cOp = 'E';
    }
    if (cOp != '\0') {
      Expression right = parseArithmeticExpression(stream);
      expr = new ArithmeticExpression(expr, cOp, right);
    }
    return expr;
  }
View Full Code Here
86
87
88
89
90
91
92
93
94
95
96
97
98
99
  private static Expression parseArithmeticExpression(ParsingTools stream) throws IOException {
    return parseSumExpression(stream);
  }

  private static Expression parseSumExpression(ParsingTools stream) throws IOException {
    Expression expr = parseMultExpression(stream);
    stream.ignoreBlanks();
    while (stream.lookAhead('+') || stream.lookAhead('-')) {
      char cOp = (char) stream.readChar();
      Expression right = parseMultExpression(stream);
      expr = new ArithmeticExpression(expr, cOp, right);
    }
    return expr;
  }
View Full Code Here
97
98
99
100
101
102
103
104
105
106
107
108
109
110
    }
    return expr;
  }

  private static Expression parseMultExpression(ParsingTools stream) throws IOException {
    Expression expr = parseLiteralExpression(stream);
    stream.ignoreBlanks();
    while (stream.lookAhead('*') || stream.lookAhead('/')) {
      char cOp = (char) stream.readChar();
      Expression right = parseLiteralExpression(stream);
      expr = new ArithmeticExpression(expr, cOp, right);
    }
    return expr;
  }
View Full Code Here
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
  }

  private static Expression parseLiteralExpression(ParsingTools stream) throws IOException {
    stream.ignoreBlanks();
    if (stream.isEqualTo('(')) {
      Expression expr = parseExpression(stream);
      stream.ignoreBlanks();
      if (!stream.isEqualTo(')')) {
        throw new ParsingException(stream, stream.syntaxError("')' expected"));
      }
      return expr;
    } else if (stream.isEqualTo('!')) {
      Expression expr = parseLiteralExpression(stream);
      return new NotExpression(expr);
    } else if (stream.isEqualTo('*')) {
      return new StarLiteral();
    } else if (stream.isEqualTo('[')) {
      ArrayExpression expr = new ArrayExpression();
      stream.ignoreBlanks();
      if (!stream.isEqualTo(']')) {
        Expression item = parseExpression(stream);
        expr.addItem(item);
        stream.ignoreBlanks();
        while (stream.isEqualTo(',')) {
          item = parseExpression(stream);
          expr.addItem(item);
View Full Code Here
166
167
168
169
170
171
172
173
174
175
176
  private static Expression parseIntermediateFunctionCall(ParsingTools stream, String sFunctionName) throws IOException {
    FunctionCallExpression expr = new FunctionCallExpression(sFunctionName);
    stream.ignoreBlanks();
    if (!stream.isEqualTo(')')) {
      Expression param = parseExpression(stream);
      expr.addParameter(param);
      stream.ignoreBlanks();
      while (stream.isEqualTo(',')) {
        param = parseExpression(stream);
        expr.addParameter(param);
View Full Code Here
TOP

Related Classes of org.elegant.aash.comparator.parsing.expr.Expression

  • org.elegant.aash.comparator.parsing.ExpressionParser
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.