Spider/spider-flow
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

表达式增加动态方法

Browse Source
This commit is contained in:
mxd 2019-10-04 16:42:52 +08:00
parent e534948648
commit ed9ca342d9
2 changed files with 23 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
spider-flow-api/src/main/java/org/spiderflow/expression/DynamicMethod.java Normal file
View File

@ -0,0 +1,9 @@
package org.spiderflow.expression;
import java.util.List;
public interface DynamicMethod {
public Object execute(String methodName,List<Object> parameters);
}

16
spider-flow-core/src/main/java/org/spiderflow/core/expression/parsing/Ast.java
View File

@ -4,6 +4,7 @@ package org.spiderflow.core.expression.parsing;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
@ -18,6 +19,7 @@ import org.spiderflow.core.expression.ExpressionTemplate;
import org.spiderflow.core.expression.ExpressionTemplateContext;
import org.spiderflow.core.expression.interpreter.AstInterpreter;
import org.spiderflow.core.expression.interpreter.Reflection;
import org.spiderflow.expression.DynamicMethod;
/** Templates are parsed into an abstract syntax tree (AST) nodes by a Parser. This class contains all AST node types. */
@ -1060,7 +1062,17 @@ public abstract class Ast {
Expression expr = arguments.get(i);
argumentValues[i] = expr.evaluate(template, context);
}
if(object instanceof DynamicMethod){
try {
Object method = DynamicMethod.class.getDeclaredMethod("execute", new Class[]{String.class,List.class});
Object[] newArgumentValues = new Object[]{getMethod().getName().getText(),Arrays.asList(argumentValues)};
return Reflection.getInstance().callMethod(object, method, newArgumentValues);
} catch (Throwable t) {
ExpressionError.error(t.getMessage(), getSpan(), t);
return null; // never reached
}
}
// Otherwise try to find a corresponding method or field pointing to a lambda.
Object method = getCachedMethod();
if (method != null) {
@ -1070,7 +1082,7 @@ public abstract class Ast {
// fall through
}
}
method = Reflection.getInstance().getMethod(object, getMethod().getName().getText(), argumentValues);
if (method != null) {
// found the method on the object, call it