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// line 1 "JsonReader.rl"
// Do not edit this file! Generated by Ragel.
// Ragel.exe -G2 -J -o JsonReader.java JsonReader.rl
/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.esotericsoftware.jsonbeans;
import com.esotericsoftware.jsonbeans.JsonValue.ValueType;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.ArrayList;
/** Lightweight JSON parser.
*
* The default behavior is to parse the JSON into a DOM containing {@link JsonValue} objects. Extend this class and override
* methods to perform event driven parsing. When this is done, the parse methods will return null.
* @author Nathan Sweet */
public class JsonReader {
public JsonValue parse (String json) {
char[] data = json.toCharArray();
return parse(data, 0, data.length);
}
public JsonValue parse (Reader reader) {
try {
char[] data = new char[1024];
int offset = 0;
while (true) {
int length = reader.read(data, offset, data.length - offset);
if (length == -1) break;
if (length == 0) {
char[] newData = new char[data.length * 2];
System.arraycopy(data, 0, newData, 0, data.length);
data = newData;
} else
offset += length;
}
return parse(data, 0, offset);
} catch (IOException ex) {
throw new JsonException(ex);
} finally {
try {
reader.close();
} catch (IOException ignored) {
}
}
}
public JsonValue parse (InputStream input) {
try {
return parse(new InputStreamReader(input, "UTF-8"));
} catch (IOException ex) {
throw new JsonException(ex);
} finally {
try {
input.close();
} catch (IOException ignored) {
}
}
}
public JsonValue parse (File file) {
try {
return parse(new InputStreamReader(new FileInputStream(file), "UTF-8"));
} catch (Exception ex) {
throw new JsonException("Error parsing file: " + file, ex);
}
}
public JsonValue parse (char[] data, int offset, int length) {
int cs, p = offset, pe = length, eof = pe, top = 0;
int[] stack = new int[4];
int s = 0;
ArrayList names = new ArrayList(8);
boolean needsUnescape = false, stringIsName = false, stringIsUnquoted = false;
RuntimeException parseRuntimeEx = null;
boolean debug = false;
if (debug) System.out.println();
try {
// line 3 "JsonReader.java"
{
cs = json_start;
top = 0;
}
// line 8 "JsonReader.java"
{
int _klen;
int _trans = 0;
int _acts;
int _nacts;
int _keys;
int _goto_targ = 0;
_goto:
while (true) {
switch (_goto_targ) {
case 0:
if (p == pe) {
_goto_targ = 4;
continue _goto;
}
if (cs == 0) {
_goto_targ = 5;
continue _goto;
}
case 1:
_match:
do {
_keys = _json_key_offsets[cs];
_trans = _json_index_offsets[cs];
_klen = _json_single_lengths[cs];
if (_klen > 0) {
int _lower = _keys;
int _mid;
int _upper = _keys + _klen - 1;
while (true) {
if (_upper < _lower) break;
_mid = _lower + ((_upper - _lower) >> 1);
if (data[p] < _json_trans_keys[_mid])
_upper = _mid - 1;
else if (data[p] > _json_trans_keys[_mid])
_lower = _mid + 1;
else {
_trans += (_mid - _keys);
break _match;
}
}
_keys += _klen;
_trans += _klen;
}
_klen = _json_range_lengths[cs];
if (_klen > 0) {
int _lower = _keys;
int _mid;
int _upper = _keys + (_klen << 1) - 2;
while (true) {
if (_upper < _lower) break;
_mid = _lower + (((_upper - _lower) >> 1) & ~1);
if (data[p] < _json_trans_keys[_mid])
_upper = _mid - 2;
else if (data[p] > _json_trans_keys[_mid + 1])
_lower = _mid + 2;
else {
_trans += ((_mid - _keys) >> 1);
break _match;
}
}
_trans += _klen;
}
} while (false);
_trans = _json_indicies[_trans];
cs = _json_trans_targs[_trans];
if (_json_trans_actions[_trans] != 0) {
_acts = _json_trans_actions[_trans];
_nacts = (int)_json_actions[_acts++];
while (_nacts-- > 0) {
switch (_json_actions[_acts++]) {
case 0:
// line 108 "JsonReader.rl"
{
stringIsName = true;
}
break;
case 1:
// line 111 "JsonReader.rl"
{
String value = new String(data, s, p - s);
s = p;
if (needsUnescape) value = unescape(value);
outer:
if (stringIsName) {
stringIsName = false;
if (debug) System.out.println("name: " + value);
names.add(value);
} else {
String name = names.size() > 0 ? names.remove(names.size() - 1) : null;
if (stringIsUnquoted) {
if (value.equals("true")) {
if (debug) System.out.println("boolean: " + name + "=true");
bool(name, true);
break outer;
} else if (value.equals("false")) {
if (debug) System.out.println("boolean: " + name + "=false");
bool(name, false);
break outer;
} else if (value.equals("null")) {
string(name, null);
break outer;
} else if (value.indexOf('.') != -1) {
try {
if (debug) System.out.println("double: " + name + "=" + Double.parseDouble(value));
number(name, Double.parseDouble(value));
break outer;
} catch (NumberFormatException ignored) {
}
} else {
try {
if (debug) System.out.println("double: " + name + "=" + Double.parseDouble(value));
number(name, Long.parseLong(value));
break outer;
} catch (NumberFormatException ignored) {
}
}
}
if (debug) System.out.println("string: " + name + "=" + value);
string(name, value);
}
stringIsUnquoted = false;
}
break;
case 2:
// line 153 "JsonReader.rl"
{
String name = names.size() > 0 ? names.remove(names.size() - 1) : null;
if (debug) System.out.println("startObject: " + name);
startObject(name);
{
if (top == stack.length) {
int[] newStack = new int[stack.length * 2];
System.arraycopy(stack, 0, newStack, 0, stack.length);
stack = newStack;
}
{
stack[top++] = cs;
cs = 5;
_goto_targ = 2;
if (true) continue _goto;
}
}
}
break;
case 3:
// line 159 "JsonReader.rl"
{
if (debug) System.out.println("endObject");
pop();
{
cs = stack[--top];
_goto_targ = 2;
if (true) continue _goto;
}
}
break;
case 4:
// line 164 "JsonReader.rl"
{
String name = names.size() > 0 ? names.remove(names.size() - 1) : null;
if (debug) System.out.println("startArray: " + name);
startArray(name);
{
if (top == stack.length) {
int[] newStack = new int[stack.length * 2];
System.arraycopy(stack, 0, newStack, 0, stack.length);
stack = newStack;
}
{
stack[top++] = cs;
cs = 22;
_goto_targ = 2;
if (true) continue _goto;
}
}
}
break;
case 5:
// line 170 "JsonReader.rl"
{
if (debug) System.out.println("endArray");
pop();
{
cs = stack[--top];
_goto_targ = 2;
if (true) continue _goto;
}
}
break;
case 6:
// line 175 "JsonReader.rl"
{
if (debug) System.out.println("comment /" + data[p]);
if (data[p++] == '/') {
while (data[p] != '\n')
p++;
} else {
while (data[p] != '*' || data[p + 1] != '/')
p++;
p++;
}
}
break;
case 7:
// line 186 "JsonReader.rl"
{
if (debug) System.out.println("unquotedChars");
s = p;
needsUnescape = false;
stringIsUnquoted = true;
if (stringIsName) {
outer:
while (true) {
switch (data[p]) {
case ':':
case ' ':
case '\r':
case '\n':
case '\t':
break outer;
}
// if (debug) System.out.println("unquotedChar (name): '" + data[p] + "'");
p++;
if (p == eof) break;
}
} else {
outer:
while (true) {
switch (data[p]) {
case '}':
case ']':
case ',':
case ' ':
case '\r':
case '\n':
case '\t':
break outer;
}
// if (debug) System.out.println("unquotedChar (value): '" + data[p] + "'");
p++;
if (p == eof) break;
}
}
p--;
}
break;
case 8:
// line 226 "JsonReader.rl"
{
if (debug) System.out.println("quotedChars");
s = ++p;
needsUnescape = false;
outer:
while (true) {
switch (data[p]) {
case '\\':
needsUnescape = true;
p++;
break;
case '"':
break outer;
}
// if (debug) System.out.println("quotedChar: '" + data[p] + "'");
p++;
if (p == eof) break;
}
p--;
}
break;
// line 265 "JsonReader.java"
}
}
}
case 2:
if (cs == 0) {
_goto_targ = 5;
continue _goto;
}
if (++p != pe) {
_goto_targ = 1;
continue _goto;
}
case 4:
if (p == eof) {
int __acts = _json_eof_actions[cs];
int __nacts = (int)_json_actions[__acts++];
while (__nacts-- > 0) {
switch (_json_actions[__acts++]) {
case 1:
// line 111 "JsonReader.rl"
{
String value = new String(data, s, p - s);
s = p;
if (needsUnescape) value = unescape(value);
outer:
if (stringIsName) {
stringIsName = false;
if (debug) System.out.println("name: " + value);
names.add(value);
} else {
String name = names.size() > 0 ? names.remove(names.size() - 1) : null;
if (stringIsUnquoted) {
if (value.equals("true")) {
if (debug) System.out.println("boolean: " + name + "=true");
bool(name, true);
break outer;
} else if (value.equals("false")) {
if (debug) System.out.println("boolean: " + name + "=false");
bool(name, false);
break outer;
} else if (value.equals("null")) {
string(name, null);
break outer;
} else if (value.indexOf('.') != -1) {
try {
if (debug) System.out.println("double: " + name + "=" + Double.parseDouble(value));
number(name, Double.parseDouble(value));
break outer;
} catch (NumberFormatException ignored) {
}
} else {
try {
if (debug) System.out.println("double: " + name + "=" + Double.parseDouble(value));
number(name, Long.parseLong(value));
break outer;
} catch (NumberFormatException ignored) {
}
}
}
if (debug) System.out.println("string: " + name + "=" + value);
string(name, value);
}
stringIsUnquoted = false;
}
break;
// line 331 "JsonReader.java"
}
}
}
case 5:
}
break;
}
}
// line 257 "JsonReader.rl"
} catch (RuntimeException ex) {
parseRuntimeEx = ex;
}
JsonValue root = this.root;
this.root = null;
current = null;
lastChild.clear();
if (p < pe) {
int lineNumber = 1;
for (int i = 0; i < p; i++)
if (data[i] == '\n') lineNumber++;
throw new JsonException("Error parsing JSON on line " + lineNumber + " near: " + new String(data, p, pe - p),
parseRuntimeEx);
} else if (elements.size() != 0) {
JsonValue element = elements.get(0);
elements.clear();
if (element != null && element.isObject())
throw new JsonException("Error parsing JSON, unmatched brace.");
else
throw new JsonException("Error parsing JSON, unmatched bracket.");
} else if (parseRuntimeEx != null) {
throw new JsonException("Error parsing JSON: " + new String(data), parseRuntimeEx);
}
return root;
}
// line 341 "JsonReader.java"
private static byte[] init__json_actions_0 () {
return new byte[] {0, 1, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 2, 0, 7, 2, 0, 8, 2, 1, 3, 2, 1, 5, 2, 6, 1, 2, 7, 6,
3, 0, 7, 6};
}
private static final byte _json_actions[] = init__json_actions_0();
private static short[] init__json_key_offsets_0 () {
return new short[] {0, 0, 12, 14, 15, 28, 40, 46, 52, 54, 66, 73, 80, 92, 93, 100, 113, 115, 116, 124, 137, 144, 157, 169,
176, 183, 195, 196, 204, 217, 219, 227, 240, 245, 250, 256, 256};
}
private static final short _json_key_offsets[] = init__json_key_offsets_0();
private static char[] init__json_trans_keys_0 () {
return new char[] {13, 32, 34, 44, 47, 58, 91, 93, 123, 125, 9, 10, 42, 47, 34, 13, 32, 34, 42, 44, 47, 58, 91, 93, 123,
125, 9, 10, 13, 32, 34, 44, 47, 58, 91, 93, 123, 125, 9, 10, 13, 32, 47, 58, 9, 10, 13, 32, 47, 58, 9, 10, 42, 47, 13,
32, 34, 44, 47, 58, 91, 93, 123, 125, 9, 10, 13, 32, 44, 47, 125, 9, 10, 13, 32, 44, 47, 125, 9, 10, 13, 32, 34, 44, 47,
58, 91, 93, 123, 125, 9, 10, 34, 13, 32, 42, 47, 58, 9, 10, 13, 32, 34, 42, 44, 47, 58, 91, 93, 123, 125, 9, 10, 42, 47,
34, 13, 32, 42, 44, 47, 125, 9, 10, 13, 32, 34, 42, 44, 47, 58, 91, 93, 123, 125, 9, 10, 13, 32, 42, 47, 58, 9, 10, 13,
32, 34, 42, 44, 47, 58, 91, 93, 123, 125, 9, 10, 13, 32, 34, 44, 47, 58, 91, 93, 123, 125, 9, 10, 13, 32, 44, 47, 93, 9,
10, 13, 32, 44, 47, 93, 9, 10, 13, 32, 34, 44, 47, 58, 91, 93, 123, 125, 9, 10, 34, 13, 32, 42, 44, 47, 93, 9, 10, 13,
32, 34, 42, 44, 47, 58, 91, 93, 123, 125, 9, 10, 42, 47, 13, 32, 42, 44, 47, 93, 9, 10, 13, 32, 34, 42, 44, 47, 58, 91,
93, 123, 125, 9, 10, 13, 32, 47, 9, 10, 13, 32, 47, 9, 10, 13, 32, 42, 47, 9, 10, 0};
}
private static final char _json_trans_keys[] = init__json_trans_keys_0();
private static byte[] init__json_single_lengths_0 () {
return new byte[] {0, 10, 2, 1, 11, 10, 4, 4, 2, 10, 5, 5, 10, 1, 5, 11, 2, 1, 6, 11, 5, 11, 10, 5, 5, 10, 1, 6, 11, 2, 6,
11, 3, 3, 4, 0, 0};
}
private static final byte _json_single_lengths[] = init__json_single_lengths_0();
private static byte[] init__json_range_lengths_0 () {
return new byte[] {0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1,
0, 0};
}
private static final byte _json_range_lengths[] = init__json_range_lengths_0();
private static short[] init__json_index_offsets_0 () {
return new short[] {0, 0, 12, 15, 17, 30, 42, 48, 54, 57, 69, 76, 83, 95, 97, 104, 117, 120, 122, 130, 143, 150, 163, 175,
182, 189, 201, 203, 211, 224, 227, 235, 248, 253, 258, 264, 265};
}
private static final short _json_index_offsets[] = init__json_index_offsets_0();
private static byte[] init__json_indicies_0 () {
return new byte[] {1, 1, 2, 3, 4, 3, 5, 3, 6, 3, 1, 0, 7, 7, 3, 8, 3, 1, 1, 2, 9, 3, 10, 3, 5, 3, 6, 3, 1, 0, 12, 12, 13,
14, 15, 3, 3, 3, 3, 16, 12, 11, 17, 17, 18, 19, 17, 3, 20, 20, 21, 22, 20, 3, 23, 23, 3, 22, 22, 25, 3, 26, 3, 27, 3,
28, 3, 22, 24, 29, 29, 30, 31, 32, 29, 3, 33, 33, 14, 34, 16, 33, 3, 14, 14, 13, 3, 35, 3, 3, 3, 3, 16, 14, 11, 17, 3,
17, 17, 36, 37, 19, 17, 3, 14, 14, 13, 38, 3, 39, 3, 3, 3, 3, 16, 14, 11, 40, 40, 3, 29, 3, 29, 29, 41, 30, 42, 32, 29,
3, 22, 22, 25, 43, 3, 44, 3, 27, 3, 28, 3, 22, 24, 17, 17, 45, 46, 19, 17, 3, 12, 12, 13, 38, 14, 47, 3, 3, 3, 3, 16,
12, 11, 49, 49, 50, 51, 52, 3, 53, 54, 55, 3, 49, 48, 56, 56, 57, 58, 59, 56, 3, 60, 60, 51, 61, 54, 60, 3, 51, 51, 50,
3, 62, 3, 53, 54, 55, 3, 51, 48, 56, 3, 56, 56, 63, 57, 64, 59, 56, 3, 51, 51, 50, 65, 3, 66, 3, 53, 54, 55, 3, 51, 48,
67, 67, 3, 56, 56, 68, 57, 69, 59, 56, 3, 49, 49, 50, 65, 51, 70, 3, 53, 54, 55, 3, 49, 48, 8, 8, 71, 8, 3, 72, 72, 73,
72, 3, 8, 8, 74, 75, 8, 3, 3, 3, 0};
}
private static final byte _json_indicies[] = init__json_indicies_0();
private static byte[] init__json_trans_targs_0 () {
return new byte[] {32, 1, 3, 0, 34, 33, 33, 33, 33, 32, 34, 6, 5, 13, 12, 20, 35, 7, 8, 9, 7, 8, 9, 7, 10, 17, 18, 11, 11,
11, 12, 16, 35, 11, 16, 14, 12, 15, 6, 14, 11, 9, 19, 10, 18, 5, 21, 20, 23, 22, 26, 25, 30, 24, 36, 24, 24, 25, 29, 36,
24, 29, 27, 25, 28, 23, 27, 24, 22, 31, 30, 2, 33, 2, 1, 4};
}
private static final byte _json_trans_targs[] = init__json_trans_targs_0();
private static byte[] init__json_trans_actions_0 () {
return new byte[] {13, 0, 15, 0, 13, 7, 3, 11, 1, 32, 32, 17, 0, 20, 0, 17, 5, 1, 1, 1, 0, 0, 0, 11, 13, 15, 13, 7, 3, 1,
1, 1, 23, 0, 0, 17, 11, 29, 35, 35, 11, 11, 29, 32, 32, 11, 29, 35, 13, 0, 15, 0, 13, 7, 9, 3, 1, 1, 1, 26, 0, 0, 13,
11, 29, 32, 32, 11, 11, 29, 32, 1, 0, 0, 11, 29};
}
private static final byte _json_trans_actions[] = init__json_trans_actions_0();
private static byte[] init__json_eof_actions_0 () {
return new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1,
0, 0};
}
private static final byte _json_eof_actions[] = init__json_eof_actions_0();
static final int json_start = 1;
static final int json_first_final = 32;
static final int json_error = 0;
static final int json_en_object = 5;
static final int json_en_array = 22;
static final int json_en_main = 1;
// line 287 "JsonReader.rl"
private final ArrayList elements = new ArrayList(8);
private final ArrayList lastChild = new ArrayList(8);
private JsonValue root, current;
private void addChild (String name, JsonValue child) {
child.setName(name);
if (current == null) {
current = child;
root = child;
} else if (current.isArray() || current.isObject()) {
if (current.size == 0)
current.child = child;
else {
JsonValue last = lastChild.remove(lastChild.size() - 1);
last.next = child;
child.prev = last;
}
lastChild.add(child);
current.size++;
} else
root = current;
}
protected void startObject (String name) {
JsonValue value = new JsonValue(ValueType.object);
if (current != null) addChild(name, value);
elements.add(value);
current = value;
}
protected void startArray (String name) {
JsonValue value = new JsonValue(ValueType.array);
if (current != null) addChild(name, value);
elements.add(value);
current = value;
}
protected void pop () {
root = elements.remove(elements.size() - 1);
if (current.size > 0) lastChild.remove(lastChild.size() - 1);
current = elements.size() > 0 ? elements.get(0) : null;
}
protected void string (String name, String value) {
addChild(name, new JsonValue(value));
}
protected void number (String name, double value) {
addChild(name, new JsonValue(value));
}
protected void number (String name, long value) {
addChild(name, new JsonValue(value));
}
protected void bool (String name, boolean value) {
addChild(name, new JsonValue(value));
}
private String unescape (String value) {
int length = value.length();
StringBuilder buffer = new StringBuilder(length + 16);
for (int i = 0; i < length;) {
char c = value.charAt(i++);
if (c != '\\') {
buffer.append(c);
continue;
}
if (i == length) break;
c = value.charAt(i++);
if (c == 'u') {
buffer.append(Character.toChars(Integer.parseInt(value.substring(i, i + 4), 16)));
i += 4;
continue;
}
switch (c) {
case '"':
case '\\':
case '/':
break;
case 'b':
c = '\b';
break;
case 'f':
c = '\f';
break;
case 'n':
c = '\n';
break;
case 'r':
c = '\r';
break;
case 't':
c = '\t';
break;
default:
throw new JsonException("Illegal escaped character: \\" + c);
}
buffer.append(c);
}
return buffer.toString();
}
}
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