如何使用 AST 从 Java 方法中提取元数据？
How to extract metadata from Java methods using AST?
是否有 AST 工具可以轻松地从 Java 方法中提取元数据？
例如，使用下面的代码片段
/*
Checks if a target integer is present in the list of integers.
*/
public Boolean contains(Integer target, List<Integer> numbers) {
for(Integer number: numbers){
if(number.equals(target)){
return true;
}
}
return false;
}
元数据将是：
metadata = {
"comment": "Checks if a target integer is present in the list of integers.",
"identifier": "contains",
"parameters": "Integer target, List<Integer> numbers",
"return_statement": "Boolean false"
}
这个 class 是很久以前写的。它实际上是大约四个不同的 classes - 散布在一个名为 JavaParserBridge 的包中。它极大地简化了您要尝试做的事情。我去掉了所有不必要的东西，并将其简化为 100 行。大概用了一个小时...
我希望这一切都有意义。我通常会在代码中添加很多注释，但有时在处理其他库时 - 并在 Stack Overflow 上发帖 - 因为这实际上只是一个大构造函数 - 我会给你留下 Java Parser[=21 的文档页面=]
要使用此 class，只需将 Java Class 的 source-code 文件作为单个 java.lang.String，而名为 getMethods(String) 的方法将 return 一个 Java Vector<Method>。 returned Vector 的每个元素都将有一个 Method 的实例，其中应包含您在问题中请求的所有 元信息 。
IMPORTANT: You can get the JAR File for this package off of the github page. You need the JAR named:
javaparser-core-3.16.2.jar
import com.github.javaparser.StaticJavaParser;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.TypeDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.body.Parameter;
import com.github.javaparser.ast.type.ReferenceType;
import com.github.javaparser.ast.type.TypeParameter;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.ast.Modifier; // Modifiers are the key-words such as "public, private, static, etc..."
import com.github.javaparser.printer.lexicalpreservation.LexicalPreservingPrinter;
import com.github.javaparser.printer.lexicalpreservation.PhantomNodeLogic;
import java.io.IOException;
import java.util.Vector;
public class Method
{
public final String name, signature, jdComment, body, returnType;
public final String[] modifiers, parameterNames, parameterTypes, exceptions;
private Method (MethodDeclaration md)
{
NodeList<Parameter> paramList = md.getParameters();
NodeList<ReferenceType> exceptionList = md.getThrownExceptions();
NodeList<Modifier> modifiersList = md.getModifiers();
this.name = md.getNameAsString();
this.signature = md.getDeclarationAsString();
this.jdComment = (md.hasJavaDocComment() ? md.getJavadocComment().get().toString() : null);
this.returnType = md.getType().toString();
this.modifiers = new String[modifiersList.size()];
this.parameterNames = new String[paramList.size()];
this.parameterTypes = new String[paramList.size()];
this.exceptions = new String[exceptionList.size()];
this.body = (md.getBody().isPresent()
? LexicalPreservingPrinter.print
(LexicalPreservingPrinter.setup(md.getBody().get()))
: null);
int i=0;
for (Modifier modifier : modifiersList) modifiers[i++] = modifier.toString();
i=0;
for (Parameter p : paramList)
{
parameterNames[i] = p.getName().toString();
parameterTypes[i] = p.getType().toString();
i++;
}
i=0;
for (ReferenceType r : exceptionList) this.exceptions[i++] = r.toString();
}
public static Vector<Method> getMethods(String sourceFileAsString) throws IOException
{
// This is the "Return Value" for this method (a Vector)
final Vector<Method> methods = new Vector<>();
// This asks Java Parser to parse the source code file
// The String-parameter 'sourceFileAsString' should have this
CompilationUnit cu = StaticJavaParser.parse(sourceFileAsString);
// This will "walk" all of the methods that were parsed by
// StaticJavaParser, and retrieve the method information.
// The method information is stored in a class simply called "Method"
cu.walk(MethodDeclaration.class, (MethodDeclaration md) -> methods.add(new Method(md)));
// There is one important thing to do: clear the cache
// Memory leaks shall occur if you do not.
PhantomNodeLogic.cleanUpCache();
// return the Vector<Method>
return methods;
}
}
您需要将此方法添加到上面的 class...我很少（如果有的话）为单个 Stack Overflow 问题添加多个答案。但是，由于这变成了很多代码，我不想让这个变得过于复杂，而是将这个 main 方法作为你问题的单独答案发布。
您需要在上面的 class 中包含此方法，它会正确处理我从您的网站下载的文件 functions.json。正在处理的文件名为 functions.json，它包含方法列表及其 data-base ID。
另外： 确保添加行：import java.util.regex.* 因为此方法使用 java class Pattern 和 class Matcher
public static void main(String[] argv) throws IOException
{
// "321": "\tpublic int getPushesLowerbound() {\n\t\treturn pushesLowerbound;\n\t}\n",
// If you have not used "Regular Expressions" before, you are just
// going to have to read about them. This "Regular Expression" parses your
// JSON "functions.json" file. It is a little complicated, but not too bad.
Pattern P1 = Pattern.compile("^\s+\"(\d+)\"\:\s+\"(.*?)\\n\",$");
BufferedReader br = new BufferedReader(new FileReader(new File("functions.json")));
String s = br.readLine();
// Any time you have a "Constructor" instead of a method, you should
// use some other method in `StaticJavaParser` to deal with it.
// for now, I am just going to keep a "Fail List" instead..
int failCount = 0;
Vector<String> failIDs = new Vector<>();
while (! (s = br.readLine()).equals("}"))
{
// Parse the JSON using a Regular Expression. It is just easier to do it this way
// You have a VERY BASIC json file.
Matcher m = P1.matcher(s);
// I do not think any of the String's will fail the regular expression matcher.
// Just in case, continue if the Regular Expression Match Failed.
if (! m.find()) { System.out.print("."); continue; }
// The ID is the first JSON element matched by the regular expression
String id = m.group(1);
// The source code is the second JSON element matched by the regular-expression
// NOTE: Your source-code is not perfect... It has "escape sequences", so these sequennces
// have to be "unescaped"
// ALSO: this is not the most efficient way to "un-escape" an escape-sequence, but I would
// have to include an external library to do it the right way, so I'm going to leave
// this version here for your to think about.
String src = m.group(2)
.replace("\\", "" + ((char) 55555))
.replace("\n", "\n")
.replace("\t", "\t")
.replace("\\"", "\"")
.replace("" + ((char) 55555), "\");
// Java Parser has a method EXPLICITLY FOR parsing method Declarations.
// Your "functions.json" file has a list of method-declarations.
MethodDeclaration md = null;
// I found one that failed - it was a constructor..
try
{ md = StaticJavaParser.parseMethodDeclaration(src); }
catch (Exception e)
{ System.out.println(src); e.printStackTrace(); failCount++; continue; }
Method method = new Method(md);
System.out.print(
"ID: " + id + '\n' +
"Name: " + method.name + '\n' +
"Return Type: " + method.returnType + '\n' +
"Parameters: "
);
for (int i=0; i < method.parameterNames.length; i++)
System.out.print(method.parameterNames[i] + '(' + method.parameterTypes[i] + ") ");
System.out.println("\n");
PhantomNodeLogic.cleanUpCache();
}
System.out.print(
"Fail Count: " + failCount + "\n" +
"Failed ID's: "
);
for (String failID : failIDs) System.out.print(failID + " ");
System.out.println();
}
上述方法会产生这种类型的输出。既然你有 - 从字面上 - 一百万个方法，它会 运行 一段时间。
注意：并非该列表中的每个方法都是有效方法。如果有构造函数而不是方法，则需要将其解析为构造函数。对于 JavaParser 无法解析的方法，有一个“失败列表”——我将把它留作练习，让您了解如何处理 Constructors（未被名为 parseMethodDeclaration
的 StaticJavaParser 方法解析
注意： 这将 运行 持续 很长时间 - 我只发布了这个 main(String[] argv) 方法输出的（非常）小的子集...
ID: 32808641
Name: addUnboundTypePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808649
Name: addNamePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808650
Name: addInputParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808651
Name: addQualifiedNamePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808652
Name: addOutputParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808656
Name: addReturnParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808658
Name: addSignatureParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808659
Name: getLabelProvider
Return Type: IItemLabelProvider
Parameters: namedElement(NamedElement)
ID: 32808661
Name: getLabel
Return Type: String
Parameters: namedElement(NamedElement)
ID: 32808677
Name: addBodyPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808678
Name: addLanguagePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808696
Name: addKindPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808707
Name: addStaticPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808708
Name: addKindPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808709
Name: addSemanticsPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808711
Name: addConstrainedElementPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808713
Name: addDefinedFeaturePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808727
Name: addNestingNamespacePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808741
Name: addKindPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808749
Name: addSuperTypePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32814359
Name: getResource
Return Type: ResourceBundle
Parameters: name(String) language(String)
ID: 32814360
Name: store
Return Type: void
Parameters: resource(ResourceBundle) name(String) language(String)
ID: 32814364
Name: getString
Return Type: String
Parameters: key(String) resourceName(String) language(String)
ID: 32814400
Name: getGlobalCompletionRate
Return Type: double
Parameters:
ID: 32814409
Name: setCurrentSubTask
Return Type: void
Parameters: subTask(TaskMonitor) subTaskShare(double)
ID: 32814429
Name: enforceCompletion
Return Type: void
Parameters:
ID: 32814431
Name: getCurrentActiveSubTask
Return Type: TaskMonitor
Parameters:
ID: 32814469
Name: checkTaskState
Return Type: void
Parameters:
ID: 32814619
Name: getReportAsText
Return Type: String
Parameters: report(ProcessReport)
ID: 32815305
Name: showRecoveryResultWindow
Return Type: void
Parameters: context(ProcessContext)
ID: 32815353
Name: validateStructure
Return Type: void
Parameters:
ID: 32815413
Name: buildArchive
Return Type: void
Parameters: context(ProcessContext)
ID: 32815445
Name: checkArchiveCompatibility
Return Type: boolean
Parameters: archive(File)
ID: 32815446
Name: checkStupidConfigurations
Return Type: boolean
Parameters:
ID: 32815472
Name: getDescription
Return Type: String
Parameters:
ID: 32815501
Name: getDataDirectory
Return Type: File
Parameters: archive(File)
重要提示：（再次）任何时候你的任何 Data-base 函数都是 构造函数 而不是 methods 我在 class StaticJavaParser 中使用的 JavaParser 方法将抛出异常。
看这里：这是一个构造函数：
ID: 32812832
Name: run
Return Type: void
Parameters:
public PeriodicData (String secProp ) {
this.interval = 300;
try {
this.interval = Integer.parseInt( secProp );
} catch (Exception e ) {} // use default 5m
}
我发布的代码在遇到它时会打印此消息：
com.github.javaparser.ParseProblemException: Encountered unexpected token: "(" "("
at line 1, column 22.
Was expecting one of:
"enum"
"exports"
"module"
"open"
"opens"
"provides"
"requires"
"strictfp"
"to"
"transitive"
"uses"
"with"
"yield"
<IDENTIFIER>
Problem stacktrace :
com.github.javaparser.GeneratedJavaParser.generateParseException(GeneratedJavaParser.java:10906)
com.github.javaparser.GeneratedJavaParser.jj_consume_token(GeneratedJavaParser.java:10752)
com.github.javaparser.GeneratedJavaParser.Identifier(GeneratedJavaParser.java:2193)
com.github.javaparser.GeneratedJavaParser.SimpleName(GeneratedJavaParser.java:2127)
com.github.javaparser.GeneratedJavaParser.MethodDeclaration(GeneratedJavaParser.java:1224)
com.github.javaparser.GeneratedJavaParser.MethodDeclarationParseStart(GeneratedJavaParser.java:6020)
com.github.javaparser.JavaParser.parse(JavaParser.java:123)
com.github.javaparser.JavaParser.parseMethodDeclaration(JavaParser.java:540)
com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
Method.main(Method.java:110)
at com.github.javaparser.StaticJavaParser.handleResult(StaticJavaParser.java:260)
at com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
at Method.main(Method.java:110)
public PeriodicData (int seconds ) {
this.interval = seconds;
}
com.github.javaparser.ParseProblemException: Encountered unexpected token: "(" "("
at line 1, column 22.
Was expecting one of:
"enum"
"exports"
"module"
"open"
"opens"
"provides"
"requires"
"strictfp"
"to"
"transitive"
"uses"
"with"
"yield"
<IDENTIFIER>
Problem stacktrace :
com.github.javaparser.GeneratedJavaParser.generateParseException(GeneratedJavaParser.java:10906)
com.github.javaparser.GeneratedJavaParser.jj_consume_token(GeneratedJavaParser.java:10752)
com.github.javaparser.GeneratedJavaParser.Identifier(GeneratedJavaParser.java:2193)
com.github.javaparser.GeneratedJavaParser.SimpleName(GeneratedJavaParser.java:2127)
com.github.javaparser.GeneratedJavaParser.MethodDeclaration(GeneratedJavaParser.java:1224)
com.github.javaparser.GeneratedJavaParser.MethodDeclarationParseStart(GeneratedJavaParser.java:6020)
com.github.javaparser.JavaParser.parse(JavaParser.java:123)
com.github.javaparser.JavaParser.parseMethodDeclaration(JavaParser.java:540)
com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
Method.main(Method.java:110)
at com.github.javaparser.StaticJavaParser.handleResult(StaticJavaParser.java:260)
at com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
at Method.main(Method.java:110)
是否有 AST 工具可以轻松地从 Java 方法中提取元数据？
例如，使用下面的代码片段
/*
Checks if a target integer is present in the list of integers.
*/
public Boolean contains(Integer target, List<Integer> numbers) {
for(Integer number: numbers){
if(number.equals(target)){
return true;
}
}
return false;
}
元数据将是：
metadata = {
"comment": "Checks if a target integer is present in the list of integers.",
"identifier": "contains",
"parameters": "Integer target, List<Integer> numbers",
"return_statement": "Boolean false"
}
这个 class 是很久以前写的。它实际上是大约四个不同的 classes - 散布在一个名为 JavaParserBridge 的包中。它极大地简化了您要尝试做的事情。我去掉了所有不必要的东西，并将其简化为 100 行。大概用了一个小时...
我希望这一切都有意义。我通常会在代码中添加很多注释，但有时在处理其他库时 - 并在 Stack Overflow 上发帖 - 因为这实际上只是一个大构造函数 - 我会给你留下 Java Parser[=21 的文档页面=]
要使用此 class，只需将 Java Class 的 source-code 文件作为单个 java.lang.String，而名为 getMethods(String) 的方法将 return 一个 Java Vector<Method>。 returned Vector 的每个元素都将有一个 Method 的实例，其中应包含您在问题中请求的所有 元信息 。
IMPORTANT: You can get the JAR File for this package off of the github page. You need the JAR named:
javaparser-core-3.16.2.jar
import com.github.javaparser.StaticJavaParser;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.TypeDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.body.Parameter;
import com.github.javaparser.ast.type.ReferenceType;
import com.github.javaparser.ast.type.TypeParameter;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.ast.Modifier; // Modifiers are the key-words such as "public, private, static, etc..."
import com.github.javaparser.printer.lexicalpreservation.LexicalPreservingPrinter;
import com.github.javaparser.printer.lexicalpreservation.PhantomNodeLogic;
import java.io.IOException;
import java.util.Vector;
public class Method
{
public final String name, signature, jdComment, body, returnType;
public final String[] modifiers, parameterNames, parameterTypes, exceptions;
private Method (MethodDeclaration md)
{
NodeList<Parameter> paramList = md.getParameters();
NodeList<ReferenceType> exceptionList = md.getThrownExceptions();
NodeList<Modifier> modifiersList = md.getModifiers();
this.name = md.getNameAsString();
this.signature = md.getDeclarationAsString();
this.jdComment = (md.hasJavaDocComment() ? md.getJavadocComment().get().toString() : null);
this.returnType = md.getType().toString();
this.modifiers = new String[modifiersList.size()];
this.parameterNames = new String[paramList.size()];
this.parameterTypes = new String[paramList.size()];
this.exceptions = new String[exceptionList.size()];
this.body = (md.getBody().isPresent()
? LexicalPreservingPrinter.print
(LexicalPreservingPrinter.setup(md.getBody().get()))
: null);
int i=0;
for (Modifier modifier : modifiersList) modifiers[i++] = modifier.toString();
i=0;
for (Parameter p : paramList)
{
parameterNames[i] = p.getName().toString();
parameterTypes[i] = p.getType().toString();
i++;
}
i=0;
for (ReferenceType r : exceptionList) this.exceptions[i++] = r.toString();
}
public static Vector<Method> getMethods(String sourceFileAsString) throws IOException
{
// This is the "Return Value" for this method (a Vector)
final Vector<Method> methods = new Vector<>();
// This asks Java Parser to parse the source code file
// The String-parameter 'sourceFileAsString' should have this
CompilationUnit cu = StaticJavaParser.parse(sourceFileAsString);
// This will "walk" all of the methods that were parsed by
// StaticJavaParser, and retrieve the method information.
// The method information is stored in a class simply called "Method"
cu.walk(MethodDeclaration.class, (MethodDeclaration md) -> methods.add(new Method(md)));
// There is one important thing to do: clear the cache
// Memory leaks shall occur if you do not.
PhantomNodeLogic.cleanUpCache();
// return the Vector<Method>
return methods;
}
}
您需要将此方法添加到上面的 class...我很少（如果有的话）为单个 Stack Overflow 问题添加多个答案。但是，由于这变成了很多代码，我不想让这个变得过于复杂，而是将这个 main 方法作为你问题的单独答案发布。
您需要在上面的 class 中包含此方法，它会正确处理我从您的网站下载的文件 functions.json。正在处理的文件名为 functions.json，它包含方法列表及其 data-base ID。
另外： 确保添加行：import java.util.regex.* 因为此方法使用 java class Pattern 和 class Matcher
public static void main(String[] argv) throws IOException
{
// "321": "\tpublic int getPushesLowerbound() {\n\t\treturn pushesLowerbound;\n\t}\n",
// If you have not used "Regular Expressions" before, you are just
// going to have to read about them. This "Regular Expression" parses your
// JSON "functions.json" file. It is a little complicated, but not too bad.
Pattern P1 = Pattern.compile("^\s+\"(\d+)\"\:\s+\"(.*?)\\n\",$");
BufferedReader br = new BufferedReader(new FileReader(new File("functions.json")));
String s = br.readLine();
// Any time you have a "Constructor" instead of a method, you should
// use some other method in `StaticJavaParser` to deal with it.
// for now, I am just going to keep a "Fail List" instead..
int failCount = 0;
Vector<String> failIDs = new Vector<>();
while (! (s = br.readLine()).equals("}"))
{
// Parse the JSON using a Regular Expression. It is just easier to do it this way
// You have a VERY BASIC json file.
Matcher m = P1.matcher(s);
// I do not think any of the String's will fail the regular expression matcher.
// Just in case, continue if the Regular Expression Match Failed.
if (! m.find()) { System.out.print("."); continue; }
// The ID is the first JSON element matched by the regular expression
String id = m.group(1);
// The source code is the second JSON element matched by the regular-expression
// NOTE: Your source-code is not perfect... It has "escape sequences", so these sequennces
// have to be "unescaped"
// ALSO: this is not the most efficient way to "un-escape" an escape-sequence, but I would
// have to include an external library to do it the right way, so I'm going to leave
// this version here for your to think about.
String src = m.group(2)
.replace("\\", "" + ((char) 55555))
.replace("\n", "\n")
.replace("\t", "\t")
.replace("\\"", "\"")
.replace("" + ((char) 55555), "\");
// Java Parser has a method EXPLICITLY FOR parsing method Declarations.
// Your "functions.json" file has a list of method-declarations.
MethodDeclaration md = null;
// I found one that failed - it was a constructor..
try
{ md = StaticJavaParser.parseMethodDeclaration(src); }
catch (Exception e)
{ System.out.println(src); e.printStackTrace(); failCount++; continue; }
Method method = new Method(md);
System.out.print(
"ID: " + id + '\n' +
"Name: " + method.name + '\n' +
"Return Type: " + method.returnType + '\n' +
"Parameters: "
);
for (int i=0; i < method.parameterNames.length; i++)
System.out.print(method.parameterNames[i] + '(' + method.parameterTypes[i] + ") ");
System.out.println("\n");
PhantomNodeLogic.cleanUpCache();
}
System.out.print(
"Fail Count: " + failCount + "\n" +
"Failed ID's: "
);
for (String failID : failIDs) System.out.print(failID + " ");
System.out.println();
}
上述方法会产生这种类型的输出。既然你有 - 从字面上 - 一百万个方法，它会 运行 一段时间。
注意：并非该列表中的每个方法都是有效方法。如果有构造函数而不是方法，则需要将其解析为构造函数。对于 JavaParser 无法解析的方法，有一个“失败列表”——我将把它留作练习，让您了解如何处理 Constructors（未被名为 parseMethodDeclaration
StaticJavaParser 方法解析
注意： 这将 运行 持续 很长时间 - 我只发布了这个 main(String[] argv) 方法输出的（非常）小的子集...
ID: 32808641
Name: addUnboundTypePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808649
Name: addNamePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808650
Name: addInputParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808651
Name: addQualifiedNamePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808652
Name: addOutputParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808656
Name: addReturnParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808658
Name: addSignatureParameterPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808659
Name: getLabelProvider
Return Type: IItemLabelProvider
Parameters: namedElement(NamedElement)
ID: 32808661
Name: getLabel
Return Type: String
Parameters: namedElement(NamedElement)
ID: 32808677
Name: addBodyPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808678
Name: addLanguagePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808696
Name: addKindPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808707
Name: addStaticPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808708
Name: addKindPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808709
Name: addSemanticsPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808711
Name: addConstrainedElementPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808713
Name: addDefinedFeaturePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808727
Name: addNestingNamespacePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808741
Name: addKindPropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32808749
Name: addSuperTypePropertyDescriptor
Return Type: void
Parameters: object(Object)
ID: 32814359
Name: getResource
Return Type: ResourceBundle
Parameters: name(String) language(String)
ID: 32814360
Name: store
Return Type: void
Parameters: resource(ResourceBundle) name(String) language(String)
ID: 32814364
Name: getString
Return Type: String
Parameters: key(String) resourceName(String) language(String)
ID: 32814400
Name: getGlobalCompletionRate
Return Type: double
Parameters:
ID: 32814409
Name: setCurrentSubTask
Return Type: void
Parameters: subTask(TaskMonitor) subTaskShare(double)
ID: 32814429
Name: enforceCompletion
Return Type: void
Parameters:
ID: 32814431
Name: getCurrentActiveSubTask
Return Type: TaskMonitor
Parameters:
ID: 32814469
Name: checkTaskState
Return Type: void
Parameters:
ID: 32814619
Name: getReportAsText
Return Type: String
Parameters: report(ProcessReport)
ID: 32815305
Name: showRecoveryResultWindow
Return Type: void
Parameters: context(ProcessContext)
ID: 32815353
Name: validateStructure
Return Type: void
Parameters:
ID: 32815413
Name: buildArchive
Return Type: void
Parameters: context(ProcessContext)
ID: 32815445
Name: checkArchiveCompatibility
Return Type: boolean
Parameters: archive(File)
ID: 32815446
Name: checkStupidConfigurations
Return Type: boolean
Parameters:
ID: 32815472
Name: getDescription
Return Type: String
Parameters:
ID: 32815501
Name: getDataDirectory
Return Type: File
Parameters: archive(File)
重要提示：（再次）任何时候你的任何 Data-base 函数都是 构造函数 而不是 methods 我在 class StaticJavaParser 中使用的 JavaParser 方法将抛出异常。
看这里：这是一个构造函数：
ID: 32812832
Name: run
Return Type: void
Parameters:
public PeriodicData (String secProp ) {
this.interval = 300;
try {
this.interval = Integer.parseInt( secProp );
} catch (Exception e ) {} // use default 5m
}
我发布的代码在遇到它时会打印此消息：
com.github.javaparser.ParseProblemException: Encountered unexpected token: "(" "("
at line 1, column 22.
Was expecting one of:
"enum"
"exports"
"module"
"open"
"opens"
"provides"
"requires"
"strictfp"
"to"
"transitive"
"uses"
"with"
"yield"
<IDENTIFIER>
Problem stacktrace :
com.github.javaparser.GeneratedJavaParser.generateParseException(GeneratedJavaParser.java:10906)
com.github.javaparser.GeneratedJavaParser.jj_consume_token(GeneratedJavaParser.java:10752)
com.github.javaparser.GeneratedJavaParser.Identifier(GeneratedJavaParser.java:2193)
com.github.javaparser.GeneratedJavaParser.SimpleName(GeneratedJavaParser.java:2127)
com.github.javaparser.GeneratedJavaParser.MethodDeclaration(GeneratedJavaParser.java:1224)
com.github.javaparser.GeneratedJavaParser.MethodDeclarationParseStart(GeneratedJavaParser.java:6020)
com.github.javaparser.JavaParser.parse(JavaParser.java:123)
com.github.javaparser.JavaParser.parseMethodDeclaration(JavaParser.java:540)
com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
Method.main(Method.java:110)
at com.github.javaparser.StaticJavaParser.handleResult(StaticJavaParser.java:260)
at com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
at Method.main(Method.java:110)
public PeriodicData (int seconds ) {
this.interval = seconds;
}
com.github.javaparser.ParseProblemException: Encountered unexpected token: "(" "("
at line 1, column 22.
Was expecting one of:
"enum"
"exports"
"module"
"open"
"opens"
"provides"
"requires"
"strictfp"
"to"
"transitive"
"uses"
"with"
"yield"
<IDENTIFIER>
Problem stacktrace :
com.github.javaparser.GeneratedJavaParser.generateParseException(GeneratedJavaParser.java:10906)
com.github.javaparser.GeneratedJavaParser.jj_consume_token(GeneratedJavaParser.java:10752)
com.github.javaparser.GeneratedJavaParser.Identifier(GeneratedJavaParser.java:2193)
com.github.javaparser.GeneratedJavaParser.SimpleName(GeneratedJavaParser.java:2127)
com.github.javaparser.GeneratedJavaParser.MethodDeclaration(GeneratedJavaParser.java:1224)
com.github.javaparser.GeneratedJavaParser.MethodDeclarationParseStart(GeneratedJavaParser.java:6020)
com.github.javaparser.JavaParser.parse(JavaParser.java:123)
com.github.javaparser.JavaParser.parseMethodDeclaration(JavaParser.java:540)
com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
Method.main(Method.java:110)
at com.github.javaparser.StaticJavaParser.handleResult(StaticJavaParser.java:260)
at com.github.javaparser.StaticJavaParser.parseMethodDeclaration(StaticJavaParser.java:480)
at Method.main(Method.java:110)