001    package railo.transformer.bytecode.literal;
002    
003    import org.objectweb.asm.Opcodes;
004    import org.objectweb.asm.Type;
005    import org.objectweb.asm.commons.GeneratorAdapter;
006    
007    import railo.runtime.op.Caster;
008    import railo.transformer.bytecode.BytecodeContext;
009    import railo.transformer.bytecode.Literal;
010    import railo.transformer.bytecode.expression.ExprBoolean;
011    import railo.transformer.bytecode.expression.ExpressionBase;
012    import railo.transformer.bytecode.util.Types;
013    
014    /**
015     * Literal Boolean
016     */
017    public final class LitBoolean extends ExpressionBase implements Literal,ExprBoolean {
018        
019            /**
020             * @see java.lang.Object#toString()
021             */
022            @Override
023            public String toString() {
024                    return b+"";
025            }
026    
027            private boolean b;
028    
029            public static final LitBoolean TRUE=new LitBoolean(true,-1);
030            public static final LitBoolean FALSE=new LitBoolean(false,-1);
031    
032            public static ExprBoolean toExprBoolean(boolean b, int line) {
033                    return new LitBoolean(b,line);
034            }
035    
036            public static ExprBoolean toExprBoolean(boolean b) {
037                    return new LitBoolean(b,-1);
038            }
039            
040        /**
041         * constructor of the class
042         * @param b 
043         * @param line 
044         */
045        public LitBoolean(boolean b, int line) {
046            super(line);
047            this.b=b;
048        }
049    
050        /**
051         * @return return value as double value
052         */ 
053        public double getDoubleValue() {
054            return Caster.toDoubleValue(b);
055        }
056        
057        /**
058         * @return return value as Double Object
059         */
060        public Double getDouble() {
061            return Caster.toDouble(b);
062        }
063        
064        /**
065         * @see railo.transformer.bytecode.Literal#getString()
066         */
067        public String getString() {
068            return Caster.toString(b);
069        }
070        
071        /**
072         * @return return value as a Boolean Object
073         */
074        public Boolean getBoolean() {
075            return Caster.toBoolean(b);
076        }
077        
078        /**
079         * @return return value as a boolean value
080         */
081        public boolean getBooleanValue() {
082            return b;
083        }
084    
085        /**
086         *
087         * @see railo.transformer.bytecode.expression.ExpressionBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter, int)
088         */
089        public Type _writeOut(BytecodeContext bc, int mode) {
090            GeneratorAdapter adapter = bc.getAdapter();
091            
092            if(mode==MODE_REF) {
093                    adapter.getStatic(Types.BOOLEAN, b?"TRUE":"FALSE", Types.BOOLEAN);
094                    return Types.BOOLEAN;
095            }
096            else {
097                    adapter.visitInsn(b?Opcodes.ICONST_1:Opcodes.ICONST_0);
098                    return Types.BOOLEAN_VALUE;
099            }
100        }
101    
102        /**
103         * @see railo.transformer.bytecode.Literal#getDouble(java.lang.Double)
104         */
105        public Double getDouble(Double defaultValue) {
106            return getDouble();
107        }
108    
109        /**
110         * @see railo.transformer.bytecode.Literal#getBoolean(java.lang.Boolean)
111         */
112        public Boolean getBoolean(Boolean defaultValue) {
113            return getBoolean();
114        }
115    
116        /* *
117         * @see railo.transformer.bytecode.expression.Expression#getType()
118         * /
119        public int getType() {
120            return Types._BOOLEAN;
121        }*/
122    }