106 * {@linkplain #readConstantFieldValue(ResolvedJavaField, JavaConstant) constant} by the
107 * runtime.
108 *
109 * @param receiver object from which this field's value is to be read. This value is ignored if
110 * this field is static.
111 * @param isDefaultStable if {@code true}, default values are considered stable
112 * @return the value of this field or {@code null} if the value is not available (e.g., because
113 * the field holder is not yet initialized).
114 */
115 JavaConstant readStableFieldValue(ResolvedJavaField field, JavaConstant receiver, boolean isDefaultStable);
116
117 /**
118 * Converts the given {@link JavaKind#isPrimitive() primitive} constant to a boxed
119 * {@link JavaKind#Object object} constant, according to the Java boxing rules. Returns
120 * {@code null} if the source is is not a primitive constant, or the boxed value is not
121 * available at this point.
122 */
123 JavaConstant boxPrimitive(JavaConstant source);
124
125 /**
126 * Converts the given {@link JavaKind#Object object} constant to a
127 * {@link JavaKind#isPrimitive() primitive} constant, according to the Java unboxing rules.
128 * Returns {@code null} if the source is is not an object constant that can be unboxed, or the
129 * unboxed value is not available at this point.
130 */
131 JavaConstant unboxPrimitive(JavaConstant source);
132
133 /**
134 * Gets a string as a {@link JavaConstant}.
135 */
136 JavaConstant forString(String value);
137
138 /**
139 * Returns the {@link ResolvedJavaType} for a {@link Class} object (or any other object regarded
140 * as a class by the VM) encapsulated in the given constant. Returns {@code null} if the
141 * constant does not encapsulate a class, or if the type is not available at this point.
142 */
143 ResolvedJavaType asJavaType(Constant constant);
144
145 /**
146 * Check if the constant is embeddable in the code.
147 *
148 * @param constant the constant to test
149 */
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106 * {@linkplain #readConstantFieldValue(ResolvedJavaField, JavaConstant) constant} by the
107 * runtime.
108 *
109 * @param receiver object from which this field's value is to be read. This value is ignored if
110 * this field is static.
111 * @param isDefaultStable if {@code true}, default values are considered stable
112 * @return the value of this field or {@code null} if the value is not available (e.g., because
113 * the field holder is not yet initialized).
114 */
115 JavaConstant readStableFieldValue(ResolvedJavaField field, JavaConstant receiver, boolean isDefaultStable);
116
117 /**
118 * Converts the given {@link JavaKind#isPrimitive() primitive} constant to a boxed
119 * {@link JavaKind#Object object} constant, according to the Java boxing rules. Returns
120 * {@code null} if the source is is not a primitive constant, or the boxed value is not
121 * available at this point.
122 */
123 JavaConstant boxPrimitive(JavaConstant source);
124
125 /**
126 * Converts the given {@link JavaKind#Object object} constant to a {@link JavaKind#isPrimitive()
127 * primitive} constant, according to the Java unboxing rules. Returns {@code null} if the source
128 * is is not an object constant that can be unboxed, or the unboxed value is not available at
129 * this point.
130 */
131 JavaConstant unboxPrimitive(JavaConstant source);
132
133 /**
134 * Gets a string as a {@link JavaConstant}.
135 */
136 JavaConstant forString(String value);
137
138 /**
139 * Returns the {@link ResolvedJavaType} for a {@link Class} object (or any other object regarded
140 * as a class by the VM) encapsulated in the given constant. Returns {@code null} if the
141 * constant does not encapsulate a class, or if the type is not available at this point.
142 */
143 ResolvedJavaType asJavaType(Constant constant);
144
145 /**
146 * Check if the constant is embeddable in the code.
147 *
148 * @param constant the constant to test
149 */
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