本文整理汇总了Java中org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.MAJOR_VERSION_1_8属性的典型用法代码示例。如果您正苦于以下问题：Java ClassFileConstants.MAJOR_VERSION_1_8属性的具体用法？Java ClassFileConstants.MAJOR_VERSION_1_8怎么用？Java ClassFileConstants.MAJOR_VERSION_1_8使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants的用法示例。
在下文中一共展示了ClassFileConstants.MAJOR_VERSION_1_8属性的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: indexForSourceLevel
private int indexForSourceLevel(String sourceLevel) {
if (sourceLevel == null) return 0;
int majVersion = (int) (CompilerOptions.versionToJdkLevel(sourceLevel) >>> 16);
switch (majVersion) {
case ClassFileConstants.MAJOR_VERSION_1_2:
return 1;
case ClassFileConstants.MAJOR_VERSION_1_3:
return 2;
case ClassFileConstants.MAJOR_VERSION_1_4:
return 3;
case ClassFileConstants.MAJOR_VERSION_1_5:
return 4;
case ClassFileConstants.MAJOR_VERSION_1_6:
return 5;
case ClassFileConstants.MAJOR_VERSION_1_7:
return 6;
case ClassFileConstants.MAJOR_VERSION_1_8:
return 7;
default:
// all other cases including ClassFileConstants.MAJOR_VERSION_1_1
return 0;
}
}
示例2: versionFromJdkLevel
public static String versionFromJdkLevel(long jdkLevel) {
switch ((int)(jdkLevel>>16)) {
case ClassFileConstants.MAJOR_VERSION_1_1 :
if (jdkLevel == ClassFileConstants.JDK1_1)
return VERSION_1_1;
break;
case ClassFileConstants.MAJOR_VERSION_1_2 :
if (jdkLevel == ClassFileConstants.JDK1_2)
return VERSION_1_2;
break;
case ClassFileConstants.MAJOR_VERSION_1_3 :
if (jdkLevel == ClassFileConstants.JDK1_3)
return VERSION_1_3;
break;
case ClassFileConstants.MAJOR_VERSION_1_4 :
if (jdkLevel == ClassFileConstants.JDK1_4)
return VERSION_1_4;
break;
case ClassFileConstants.MAJOR_VERSION_1_5 :
if (jdkLevel == ClassFileConstants.JDK1_5)
return VERSION_1_5;
break;
case ClassFileConstants.MAJOR_VERSION_1_6 :
if (jdkLevel == ClassFileConstants.JDK1_6)
return VERSION_1_6;
break;
case ClassFileConstants.MAJOR_VERSION_1_7 :
if (jdkLevel == ClassFileConstants.JDK1_7)
return VERSION_1_7;
break;
case ClassFileConstants.MAJOR_VERSION_1_8 :
if (jdkLevel == ClassFileConstants.JDK1_8)
return VERSION_1_8;
break;
}
return Util.EMPTY_STRING; // unknown version
}
示例3: setComplianceOptions
/**
* Sets the default compiler options inside the given options map according
* to the given compliance.
*
* <p>The given compliance must be one of those supported by the compiler,
* that is one of the acceptable values for option {@link #COMPILER_COMPLIANCE}.</p>
*
* <p>The list of modified options is currently:</p>
* <ul>
* <li>{@link #COMPILER_COMPLIANCE}</li>
* <li>{@link #COMPILER_SOURCE}</li>
* <li>{@link #COMPILER_CODEGEN_TARGET_PLATFORM}</li>
* <li>{@link #COMPILER_PB_ASSERT_IDENTIFIER}</li>
* <li>{@link #COMPILER_PB_ENUM_IDENTIFIER}</li>
* <li>{@link #COMPILER_CODEGEN_INLINE_JSR_BYTECODE} for compliance levels 1.5 and greater</li>
* </ul>
*
* <p>If the given compliance is unknown, the given map is unmodified.</p>
*
* @param compliance the given compliance
* @param options the given options map
* @since 3.3
*/
public static void setComplianceOptions(String compliance, Map options) {
switch((int) (CompilerOptions.versionToJdkLevel(compliance) >>> 16)) {
case ClassFileConstants.MAJOR_VERSION_1_3:
options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_3);
options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_3);
options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_1);
options.put(JavaCore.COMPILER_PB_ASSERT_IDENTIFIER, JavaCore.IGNORE);
options.put(JavaCore.COMPILER_PB_ENUM_IDENTIFIER, JavaCore.IGNORE);
break;
case ClassFileConstants.MAJOR_VERSION_1_4:
options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_4);
options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_3);
options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_2);
options.put(JavaCore.COMPILER_PB_ASSERT_IDENTIFIER, JavaCore.WARNING);
options.put(JavaCore.COMPILER_PB_ENUM_IDENTIFIER, JavaCore.WARNING);
break;
case ClassFileConstants.MAJOR_VERSION_1_5:
options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_5);
options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_5);
options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_5);
options.put(JavaCore.COMPILER_PB_ASSERT_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_PB_ENUM_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_CODEGEN_INLINE_JSR_BYTECODE, JavaCore.ENABLED);
break;
case ClassFileConstants.MAJOR_VERSION_1_6:
options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_6);
options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_6);
options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_6);
options.put(JavaCore.COMPILER_PB_ASSERT_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_PB_ENUM_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_CODEGEN_INLINE_JSR_BYTECODE, JavaCore.ENABLED);
break;
case ClassFileConstants.MAJOR_VERSION_1_7:
options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_7);
options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_7);
options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_7);
options.put(JavaCore.COMPILER_PB_ASSERT_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_PB_ENUM_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_CODEGEN_INLINE_JSR_BYTECODE, JavaCore.ENABLED);
break;
case ClassFileConstants.MAJOR_VERSION_1_8:
options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_8);
options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_8);
options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_1_8);
options.put(JavaCore.COMPILER_PB_ASSERT_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_PB_ENUM_IDENTIFIER, JavaCore.ERROR);
options.put(JavaCore.COMPILER_CODEGEN_INLINE_JSR_BYTECODE, JavaCore.ENABLED);
break;
}
}
示例4: checkVMVersion
/**
* Return true if and only if the running VM supports the given minimal version.
*
* <p>This only checks the major version, since the minor version is always 0 (at least for the useful cases).</p>
* <p>The given minimalSupportedVersion is one of the constants:</p>
* <ul>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_1</code></li>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_2</code></li>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_3</code></li>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_4</code></li>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_5</code></li>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_6</code></li>
* <li><code>org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants.JDK1_7</code></li>
* </ul>
* @param minimalSupportedVersion the given minimal version
* @return true if and only if the running VM supports the given minimal version, false otherwise
*/
private boolean checkVMVersion(long minimalSupportedVersion) {
// the format of this property is supposed to be xx.x where x are digits.
String classFileVersion = System.getProperty("java.class.version"); //$NON-NLS-1$
if (classFileVersion == null) {
// by default we don't support a class file version we cannot recognize
return false;
}
int index = classFileVersion.indexOf('.');
if (index == -1) {
// by default we don't support a class file version we cannot recognize
return false;
}
int majorVersion;
try {
majorVersion = Integer.parseInt(classFileVersion.substring(0, index));
} catch (NumberFormatException e) {
// by default we don't support a class file version we cannot recognize
return false;
}
switch(majorVersion) {
case ClassFileConstants.MAJOR_VERSION_1_1 : // 1.0 and 1.1
return ClassFileConstants.JDK1_1 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_2 : // 1.2
return ClassFileConstants.JDK1_2 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_3 : // 1.3
return ClassFileConstants.JDK1_3 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_4 : // 1.4
return ClassFileConstants.JDK1_4 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_5 : // 1.5
return ClassFileConstants.JDK1_5 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_6 : // 1.6
return ClassFileConstants.JDK1_6 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_7 : // 1.7
return ClassFileConstants.JDK1_7 >= minimalSupportedVersion;
case ClassFileConstants.MAJOR_VERSION_1_8: // 1.8
return ClassFileConstants.JDK1_8 >= minimalSupportedVersion;
}
// unknown version
return false;
}