Java ECMAErrors.isScriptFrame方法代码示例

import jdk.nashorn.internal.runtime.ECMAErrors; //导入方法依赖的package包/类
/**
 * Constructor
 *
 * @param msg       exception message
 * @param cause     exception cause
 */
protected NashornException(final String msg, final Throwable cause) {
    super(msg, cause == null ? null : cause);
    // This is not so pretty - but it gets the job done. Note that the stack
    // trace has been already filled by "fillInStackTrace" call from
    // Throwable
    // constructor and so we don't pay additional cost for it.

    // Hard luck - no column number info
    this.column = -1;

    // Find the first JavaScript frame by walking and set file, line from it
    // Usually, we should be able to find it in just few frames depth.
    for (final StackTraceElement ste : getStackTrace()) {
        if (ECMAErrors.isScriptFrame(ste)) {
            // Whatever here is compiled from JavaScript code
            this.fileName = ste.getFileName();
            this.line = ste.getLineNumber();
            return;
        }
    }

    this.fileName = null;
    this.line = 0;
}
 

import jdk.nashorn.internal.runtime.ECMAErrors; //导入方法依赖的package包/类
/**
 * Returns array javascript stack frames from the given exception object.
 *
 * @param exception exception from which stack frames are retrieved and filtered
 * @return array of javascript stack frames
 */
public static StackTraceElement[] getScriptFrames(final Throwable exception) {
    final StackTraceElement[] frames = exception.getStackTrace();
    final List<StackTraceElement> filtered = new ArrayList<>();
    for (final StackTraceElement st : frames) {
        if (ECMAErrors.isScriptFrame(st)) {
            final String className = "<" + st.getFileName() + ">";
            String methodName = st.getMethodName();
            if (methodName.equals(CompilerConstants.PROGRAM.symbolName())) {
                methodName = "<program>";
            }

            if (methodName.contains(CompilerConstants.ANON_FUNCTION_PREFIX.symbolName())) {
                methodName = "<anonymous>";
            }

            filtered.add(new StackTraceElement(className, methodName,
                    st.getFileName(), st.getLineNumber()));
        }
    }
    return filtered.toArray(new StackTraceElement[filtered.size()]);
}
 

import jdk.nashorn.internal.runtime.ECMAErrors; //导入方法依赖的package包/类
/**
 * Returns array javascript stack frames from the given exception object.
 *
 * @param exception exception from which stack frames are retrieved and filtered
 * @return array of javascript stack frames
 */
public static StackTraceElement[] getScriptFrames(final Throwable exception) {
    final StackTraceElement[] frames = exception.getStackTrace();
    final List<StackTraceElement> filtered = new ArrayList<>();
    for (final StackTraceElement st : frames) {
        if (ECMAErrors.isScriptFrame(st)) {
            final String className = "<" + st.getFileName() + ">";
            String methodName = st.getMethodName();
            if (methodName.equals(CompilerConstants.PROGRAM.symbolName())) {
                methodName = "<program>";
            } else {
                methodName = stripMethodName(methodName);
            }

            filtered.add(new StackTraceElement(className, methodName,
                    st.getFileName(), st.getLineNumber()));
        }
    }
    return filtered.toArray(new StackTraceElement[0]);
}
 

import jdk.nashorn.internal.runtime.ECMAErrors; //导入方法依赖的package包/类
/**
 * Returns array javascript stack frames from the given exception object.
 *
 * @param exception exception from which stack frames are retrieved and filtered
 * @return array of javascript stack frames
 */
public static StackTraceElement[] getScriptFrames(final Throwable exception) {
    final StackTraceElement[] frames = exception.getStackTrace();
    final List<StackTraceElement> filtered = new ArrayList<>();
    for (final StackTraceElement st : frames) {
        if (ECMAErrors.isScriptFrame(st)) {
            final String className = "<" + st.getFileName() + ">";
            String methodName = st.getMethodName();
            if (methodName.equals(CompilerConstants.PROGRAM.symbolName())) {
                methodName = "<program>";
            } else {
                methodName = stripMethodName(methodName);
            }

            filtered.add(new StackTraceElement(className, methodName,
                    st.getFileName(), st.getLineNumber()));
        }
    }
    return filtered.toArray(new StackTraceElement[filtered.size()]);
}
 

import jdk.nashorn.internal.runtime.ECMAErrors; //导入方法依赖的package包/类
/**
 * Returns array javascript stack frames from the given exception object.
 *
 * @param exception exception from which stack frames are retrieved and filtered
 * @return array of javascript stack frames
 */
public static StackTraceElement[] getScriptFrames(final Throwable exception) {
    final StackTraceElement[] frames = exception.getStackTrace();
    final List<StackTraceElement> filtered = new ArrayList<>();
    for (final StackTraceElement st : frames) {
        if (ECMAErrors.isScriptFrame(st)) {
            final String className = "<" + st.getFileName() + ">";
            String methodName = st.getMethodName();
            if (methodName.equals(CompilerConstants.RUN_SCRIPT.symbolName())) {
                methodName = "<program>";
            }
            filtered.add(new StackTraceElement(className, methodName,
                    st.getFileName(), st.getLineNumber()));
        }
    }
    return filtered.toArray(new StackTraceElement[filtered.size()]);
}
 

import jdk.nashorn.internal.runtime.ECMAErrors; //导入方法依赖的package包/类
private void ensureLineAndFileName() {
    if (lineAndFileNameUnknown) {
        for (final StackTraceElement ste : getStackTrace()) {
            if (ECMAErrors.isScriptFrame(ste)) {
                // Whatever here is compiled from JavaScript code
                fileName = ste.getFileName();
                line = ste.getLineNumber();
                return;
            }
        }

        lineAndFileNameUnknown = false;
    }
}