Package com.google.gwt.dev.jjs.ast

Examples of com.google.gwt.dev.jjs.ast.JBinaryOperator

972
973
974
975
976
977
978
979
980
981
982
    JExpression processExpression(CombinedBinaryExpression x) {
      return processExpression((BinaryExpression) x);
    }

    JExpression processExpression(CompoundAssignment x) {
      JBinaryOperator op;

      switch (x.operator) {
        case CompoundAssignment.PLUS:
          if (typeMap.get(x.resolvedType) == program.getTypeJavaLangString()) {
            op = JBinaryOperator.ASG_CONCAT;
View Full Code Here
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
          elseExpr);
      return conditional;
    }

    JExpression processExpression(EqualExpression x) {
      JBinaryOperator op;
      switch ((x.bits & BinaryExpression.OperatorMASK) >> BinaryExpression.OperatorSHIFT) {
        case BinaryExpression.EQUAL_EQUAL:
          op = JBinaryOperator.EQ;
          break;
        case BinaryExpression.NOT_EQUAL:
View Full Code Here
67
68
69
70
71
72
73
74
75
76
77
   */
  private class BreakupAssignOpsVisitor extends JModVisitor {

    @Override
    public void endVisit(JBinaryOperation x, Context ctx) {
      JBinaryOperator op = x.getOp();
      if (op != JBinaryOperator.EQ && op != JBinaryOperator.NEQ) {
        return;
      }
      JExpression lhs = x.getLhs();
      JExpression rhs = x.getRhs();
View Full Code Here
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
   */
  private class BreakupAssignOpsVisitor extends JModVisitor {

    @Override
    public void endVisit(JBinaryOperation x, Context ctx) {
      JBinaryOperator op = x.getOp();
      if (op.getNonAssignmentOf() == null) {
        return;
      }
      if (!shouldBreakUp(x)) {
        return;
      }

      /*
       * Convert to an assignment and binary operation. Since the left hand size
       * must be computed twice, we have to replace any left-hand side
       * expressions that could have side effects with temporaries, so that they
       * are only run once.
       */
      enterTempUsageScope();
      ReplaceSideEffectsInLvalue replacer = new ReplaceSideEffectsInLvalue(
          new JMultiExpression(x.getSourceInfo()));
      JExpression newLhs = replacer.accept(x.getLhs());
      exitTempUsageScope();

      JBinaryOperation operation = new JBinaryOperation(x.getSourceInfo(),
          newLhs.getType(), op.getNonAssignmentOf(), newLhs, x.getRhs());
      // newLhs is cloned below because it was used in operation
      JBinaryOperation asg = new JBinaryOperation(x.getSourceInfo(), newLhs.getType(),
          JBinaryOperator.ASG, cloner.cloneExpression(newLhs),
          operation);

View Full Code Here
189
190
191
192
193
194
195
196
197
198
199
      return true;
    }

    private JBinaryOperation createAsgOpFromUnary(JExpression arg,
        JUnaryOperator op) {
      JBinaryOperator newOp;
      if (op == JUnaryOperator.INC) {
        newOp = JBinaryOperator.ASG_ADD;
      } else if (op == JUnaryOperator.DEC) {
        newOp = JBinaryOperator.ASG_SUB;
      } else {
View Full Code Here
688
689
690
691
692
693
694
695
696
697
698
      return processBinaryOperation(info, JBinaryOperator.ASG, type, x.lhs,
          x.expression);
    }

    JExpression processExpression(BinaryExpression x) {
      JBinaryOperator op;

      int binOp = (x.bits & BinaryExpression.OperatorMASK) >> BinaryExpression.OperatorSHIFT;
      switch (binOp) {
        case BinaryExpression.LEFT_SHIFT:
          op = JBinaryOperator.SHL;
View Full Code Here
761
762
763
764
765
766
767
768
769
770
771
      JType type = (JType) typeMap.get(x.targetType);
      return program.getLiteralClass(type);
    }

    JExpression processExpression(CompoundAssignment x) {
      JBinaryOperator op;

      switch (x.operator) {
        case CompoundAssignment.PLUS:
          op = JBinaryOperator.ASG_ADD;
          break;
View Full Code Here
819
820
821
822
823
824
825
826
827
828
829
          thenExpr, elseExpr);
      return conditional;
    }

    JExpression processExpression(EqualExpression x) {
      JBinaryOperator op;
      switch ((x.bits & BinaryExpression.OperatorMASK) >> BinaryExpression.OperatorSHIFT) {
        case BinaryExpression.EQUAL_EQUAL:
          op = JBinaryOperator.EQ;
          break;
        case BinaryExpression.NOT_EQUAL:
View Full Code Here
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
    /**
     * Short circuit binary operations.
     */
    @Override
    public void endVisit(JBinaryOperation x, Context ctx) {
      JBinaryOperator op = x.getOp();
      JExpression lhs = x.getLhs();
      JExpression rhs = x.getRhs();
      if ((lhs instanceof JValueLiteral) && (rhs instanceof JValueLiteral)) {
        if (evalOpOnLiterals(op, (JValueLiteral) lhs, (JValueLiteral) rhs, ctx)) {
          return;
        }
      }
      switch (op) {
        case AND:
          shortCircuitAnd(lhs, rhs, ctx);
          break;
        case OR:
          shortCircuitOr(lhs, rhs, ctx);
          break;
        case BIT_XOR:
          simplifyXor(lhs, rhs, ctx);
          break;
        case EQ:
          // simplify: null == null -> true
          if (lhs.getType() == program.getTypeNull()
              && rhs.getType() == program.getTypeNull() && !x.hasSideEffects()) {
            ctx.replaceMe(program.getLiteralBoolean(true));
            return;
          }
          simplifyEq(lhs, rhs, ctx, false);
          break;
        case NEQ:
          // simplify: null != null -> false
          if (lhs.getType() == program.getTypeNull()
              && rhs.getType() == program.getTypeNull() && !x.hasSideEffects()) {
            ctx.replaceMe(program.getLiteralBoolean(false));
            return;
          }
          simplifyEq(lhs, rhs, ctx, true);
          break;
        case ADD:
          if (x.getType() == program.getTypeJavaLangString()) {
            evalConcat(lhs, rhs, ctx);
            break;
          }
          simplifyAdd(lhs, rhs, ctx, x.getType());
          break;
        case SUB:
          simplifySub(lhs, rhs, ctx, x.getType());
          break;
        case MUL:
          simplifyMul(lhs, rhs, ctx, x.getType());
          break;
        case DIV:
          simplifyDiv(lhs, rhs, ctx, x.getType());
          break;
        case SHL:
        case SHR:
        case SHRU:
          if (isLiteralZero(rhs)) {
            ctx.replaceMe(lhs);
          }
          break;
        default:
          if (op.isAssignment()) {
            lvalues.remove(lhs);
          }
          break;
      }
    }
View Full Code Here
552
553
554
555
556
557
558
559
560
561
562
563
      if (x.getOp() == JUnaryOperator.NOT) {
        JExpression arg = x.getArg();
        if (arg instanceof JBinaryOperation) {
          // try to invert the binary operator
          JBinaryOperation argOp = (JBinaryOperation) arg;
          JBinaryOperator op = argOp.getOp();
          JBinaryOperator newOp = null;
          if (op == JBinaryOperator.EQ) {
            // e.g. !(x == y) -> x != y
            newOp = JBinaryOperator.NEQ;
          } else if (op == JBinaryOperator.NEQ) {
            // e.g. !(x != y) -> x == y
View Full Code Here
TOP

Related Classes of com.google.gwt.dev.jjs.ast.JBinaryOperator

  • com.google.gwt.dev.jjs.impl.CompoundAssignmentNormalizer$BreakupAssignOpsVisitor
  • com.google.gwt.dev.jjs.impl.DeadCodeElimination$DeadCodeVisitor
  • com.google.gwt.dev.jjs.impl.EqualityNormalizer$BreakupAssignOpsVisitor
  • com.google.gwt.dev.jjs.impl.GenerateJavaAST$JavaASTGenerationVisitor
  • com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor
  • com.google.gwt.dev.jjs.impl.LongCastNormalizer$ImplicitCastVisitor
  • com.google.gwt.dev.jjs.impl.Simplifier
    • 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.