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/*
* This code is copyrighted work by Daniel Luz <dev at mernen dot com>.
*
* Distributed under the Ruby license: https://www.ruby-lang.org/en/about/license.txt
*/
package json.ext;
import java.lang.ref.WeakReference;
import org.jruby.Ruby;
import org.jruby.RubyArray;
import org.jruby.RubyBoolean;
import org.jruby.RubyFixnum;
import org.jruby.RubyFloat;
import org.jruby.RubyHash;
import org.jruby.RubyInteger;
import org.jruby.RubyModule;
import org.jruby.RubyNumeric;
import org.jruby.RubyString;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.ByteList;
/**
* A class that populates the
* <code>Json::Ext::Generator::GeneratorMethods</code> module.
*
* @author mernen
*/
class GeneratorMethods {
/**
* Populates the given module with all modules and their methods
* @param info
* @param generatorMethodsModule The module to populate
* (normally <code>JSON::Generator::GeneratorMethods</code>)
*/
static void populate(RuntimeInfo info, RubyModule module) {
defineMethods(module, "Array", RbArray.class);
defineMethods(module, "FalseClass", RbFalse.class);
defineMethods(module, "Float", RbFloat.class);
defineMethods(module, "Hash", RbHash.class);
defineMethods(module, "Integer", RbInteger.class);
defineMethods(module, "NilClass", RbNil.class);
defineMethods(module, "Object", RbObject.class);
defineMethods(module, "String", RbString.class);
defineMethods(module, "TrueClass", RbTrue.class);
info.stringExtendModule = new WeakReference<RubyModule>(module.defineModuleUnder("String")
.defineModuleUnder("Extend"));
info.stringExtendModule.get().defineAnnotatedMethods(StringExtend.class);
}
/**
* Convenience method for defining methods on a submodule.
* @param parentModule
* @param submoduleName
* @param klass
*/
private static void defineMethods(RubyModule parentModule,
String submoduleName, Class klass) {
RubyModule submodule = parentModule.defineModuleUnder(submoduleName);
submodule.defineAnnotatedMethods(klass);
}
public static class RbHash {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, (RubyHash)vSelf,
Generator.HASH_HANDLER, args);
}
}
public static class RbArray {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, (RubyArray)vSelf,
Generator.ARRAY_HANDLER, args);
}
}
public static class RbInteger {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, vSelf, args);
}
}
public static class RbFloat {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, (RubyFloat)vSelf,
Generator.FLOAT_HANDLER, args);
}
}
public static class RbString {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, (RubyString)vSelf,
Generator.STRING_HANDLER, args);
}
/**
* <code>{@link RubyString String}#to_json_raw(*)</code>
*
* <p>This method creates a JSON text from the result of a call to
* {@link #to_json_raw_object} of this String.
*/
@JRubyMethod(rest=true)
public static IRubyObject to_json_raw(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
RubyHash obj = toJsonRawObject(context, Utils.ensureString(vSelf));
return Generator.generateJson(context, obj,
Generator.HASH_HANDLER, args);
}
/**
* <code>{@link RubyString String}#to_json_raw_object(*)</code>
*
* <p>This method creates a raw object Hash, that can be nested into
* other data structures and will be unparsed as a raw string. This
* method should be used if you want to convert raw strings to JSON
* instead of UTF-8 strings, e.g. binary data.
*/
@JRubyMethod(rest=true)
public static IRubyObject to_json_raw_object(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return toJsonRawObject(context, Utils.ensureString(vSelf));
}
private static RubyHash toJsonRawObject(ThreadContext context,
RubyString self) {
Ruby runtime = context.getRuntime();
RubyHash result = RubyHash.newHash(runtime);
IRubyObject createId = RuntimeInfo.forRuntime(runtime)
.jsonModule.get().callMethod(context, "create_id");
result.op_aset(context, createId, self.getMetaClass().to_s());
ByteList bl = self.getByteList();
byte[] uBytes = bl.unsafeBytes();
RubyArray array = runtime.newArray(bl.length());
for (int i = bl.begin(), t = bl.begin() + bl.length(); i < t; i++) {
array.store(i, runtime.newFixnum(uBytes[i] & 0xff));
}
result.op_aset(context, runtime.newString("raw"), array);
return result;
}
@JRubyMethod(required=1, module=true)
public static IRubyObject included(ThreadContext context,
IRubyObject vSelf, IRubyObject module) {
RuntimeInfo info = RuntimeInfo.forRuntime(context.getRuntime());
return module.callMethod(context, "extend", info.stringExtendModule.get());
}
}
public static class StringExtend {
/**
* <code>{@link RubyString String}#json_create(o)</code>
*
* <p>Raw Strings are JSON Objects (the raw bytes are stored in an
* array for the key "raw"). The Ruby String can be created by this
* module method.
*/
@JRubyMethod(required=1)
public static IRubyObject json_create(ThreadContext context,
IRubyObject vSelf, IRubyObject vHash) {
Ruby runtime = context.getRuntime();
RubyHash o = vHash.convertToHash();
IRubyObject rawData = o.fastARef(runtime.newString("raw"));
if (rawData == null) {
throw runtime.newArgumentError("\"raw\" value not defined "
+ "for encoded String");
}
RubyArray ary = Utils.ensureArray(rawData);
byte[] bytes = new byte[ary.getLength()];
for (int i = 0, t = ary.getLength(); i < t; i++) {
IRubyObject element = ary.eltInternal(i);
if (element instanceof RubyFixnum) {
bytes[i] = (byte)RubyNumeric.fix2long(element);
} else {
throw runtime.newTypeError(element, runtime.getFixnum());
}
}
return runtime.newString(new ByteList(bytes, false));
}
}
public static class RbTrue {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, (RubyBoolean)vSelf,
Generator.TRUE_HANDLER, args);
}
}
public static class RbFalse {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, (RubyBoolean)vSelf,
Generator.FALSE_HANDLER, args);
}
}
public static class RbNil {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject vSelf, IRubyObject[] args) {
return Generator.generateJson(context, vSelf,
Generator.NIL_HANDLER, args);
}
}
public static class RbObject {
@JRubyMethod(rest=true)
public static IRubyObject to_json(ThreadContext context,
IRubyObject self, IRubyObject[] args) {
return RbString.to_json(context, self.asString(), args);
}
}
}
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