package cn.org.rapid_framework.generator.provider.java.model;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import cn.org.rapid_framework.generator.util.ClassHelper;
import cn.org.rapid_framework.generator.util.IOHelper;
import cn.org.rapid_framework.generator.util.StringHelper;
import cn.org.rapid_framework.generator.util.paranamer.AdaptiveParanamer;
import cn.org.rapid_framework.generator.util.paranamer.BytecodeReadingParanamer;
import cn.org.rapid_framework.generator.util.paranamer.CachingParanamer;
import cn.org.rapid_framework.generator.util.paranamer.DefaultParanamer;
import cn.org.rapid_framework.generator.util.paranamer.JavaSourceParanamer;
import cn.org.rapid_framework.generator.util.paranamer.Paranamer;
public class MethodParameter {
int paramIndex = -1; // paramIndex,从1开始
String paramName; //paramName名称
JavaClass paramClass; //parameter的类型
JavaMethod method; //与parameter相关联的method
public MethodParameter(int paramIndex, JavaMethod method,JavaClass paramClazz) {
super();
this.method = method;
this.paramIndex = paramIndex;
this.paramClass = paramClazz;
}
public JavaMethod getMethod() {
return method;
}
public String getName() {
if(paramIndex < 0) return null;
String[] parameterNames = lookupParameterNamesByParanamer();
if(parameterNames == null || parameterNames.length == 0) {
if(StringHelper.isNotBlank(paramName))
return paramName;
if(paramClass.getClazz().isPrimitive() || paramClass.getClazz().getName().startsWith("java.")) {
return "param"+paramIndex;
}else {
return StringHelper.uncapitalize(paramClass.getClassName());
}
}else {
return parameterNames[paramIndex - 1];
}
}
public static Paranamer paranamer = setParanamer(ClassHelper.getDefaultClassLoader());
public static Paranamer setParanamer(ClassLoader classLoader) {
paranamer = new CachingParanamer(new AdaptiveParanamer(new DefaultParanamer(),new BytecodeReadingParanamer(),new JavaSourceParanamer(classLoader)) );
return paranamer;
}
private String[] lookupParameterNamesByParanamer() {
return paranamer.lookupParameterNames(method.method,false);
}
public int getParamIndex() {
return paramIndex;
}
public String getAsType() {
return paramClass.getAsType();
}
public String getClassName() {
return paramClass.getClassName();
}
public String getJavaType() {
return paramClass.getJavaType();
}
public String getPackageName() {
return paramClass.getPackageName();
}
public String getPackagePath() {
return paramClass.getPackagePath();
}
public String getParentPackageName() {
return paramClass.getParentPackageName();
}
public String getParentPackagePath() {
return paramClass.getParentPackagePath();
}
public boolean isArray() {
return paramClass.isArray();
}
public String getCanonicalName() {
return paramClass.getCanonicalName();
}
public List<JavaField> getFields() {
return paramClass.getFields();
}
public JavaMethod[] getMethods() {
return paramClass.getMethods();
}
public boolean isAnnotation() {
return paramClass.isAnnotation();
}
public boolean isAnonymousClass() {
return paramClass.isAnonymousClass();
}
public boolean isEnum() {
return paramClass.isEnum();
}
public boolean isInterface() {
return paramClass.isInterface();
}
public boolean isLocalClass() {
return paramClass.isLocalClass();
}
public boolean isMemberClass() {
return paramClass.isMemberClass();
}
public boolean isPrimitive() {
return paramClass.isPrimitive();
}
public boolean isSynthetic() {
return paramClass.isSynthetic();
}
public JavaProperty[] getProperties() throws Exception {
return paramClass.getProperties();
}
public String getSuperclassName() {
return paramClass.getSuperclassName();
}
public JavaClass getParamClass() {
return paramClass;
}
public static String[] parseJavaFileForParamNames(Method method,File javaFile) throws IOException {
String content = IOHelper.readFile(javaFile);
return new JavaSourceFileMethodParametersParser().parseJavaFileForParamNames(method, content);
}
public static class JavaSourceFileMethodParametersParser {
public String[] parseJavaFileForParamNames(Method method,String content) {
Pattern methodPattern = Pattern.compile("(?s)"+method.getName()+"\\s*\\("+getParamsPattern(method)+"\\)\\s*\\{");
Matcher m = methodPattern.matcher(content);
List paramNames = new ArrayList();
while(m.find()) {
for(int i = 1; i <= method.getParameterTypes().length; i++) {
paramNames.add(m.group(i));
}
return (String[])paramNames.toArray(new String[0]);
}
return null;
}
public static String getParamsPattern(Method method) {
List paramPatterns = new ArrayList();
for(int i = 0; i < method.getParameterTypes().length; i++ ) {
Class type = method.getParameterTypes()[i];
String classType = type.getSimpleName().replace("[", "\\[").replace("]", "\\]");
String paramPattern = ".*"+classType+".*\\s+(\\w+).*";
paramPatterns.add(paramPattern);
}
return StringHelper.join(paramPatterns, ",");
}
public static String getSimpleParamsPattern(Method method) {
List paramPatterns = new ArrayList();
for(int i = 0; i < method.getParameterTypes().length; i++ ) {
Class type = method.getParameterTypes()[i];
String classType = type.getSimpleName().replace("[", "\\[").replace("]", "\\]");
String paramPattern = classType+".*";
paramPatterns.add(paramPattern);
}
return ".*"+StringHelper.join(paramPatterns,"");
}
}
public String toString() {
return "MethodParameter:"+getName()+"="+getJavaType();
}
}