JSONParser.java
/* JSONParser.java */
/* Generated By:JavaCC: Do not edit this line. JSONParser.java */
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.tomcat.util.json;
/**
* Basic JSON parser generated by JavaCC. It consumes the input provided through the constructor when
* {@code parseObject()}, {@code parseList()}, or {@code parse()} are called, and there is no way to directly
* reset the state.
*/
@SuppressWarnings("all") // Ignore warnings in generated code
public class JSONParser implements JSONParserConstants {
private boolean nativeNumbers = false;
public JSONParser(String input) {
this(new java.io.StringReader(input));
}
/**
* Parses a JSON object into a Java {@code Map}.
*/
public java.util.LinkedHashMap<String, Object> parseObject() throws ParseException {
java.util.LinkedHashMap<String, Object> toReturn = object();
if (!ensureEOF()) {
throw new IllegalStateException("Expected EOF, but still had content to parse");
}
return toReturn;
}
/**
* Parses a JSON array into a Java {@code List}.
*/
public java.util.ArrayList<Object> parseArray() throws ParseException {
java.util.ArrayList<Object> toReturn = list();
if (!ensureEOF()) {
throw new IllegalStateException("Expected EOF, but still had content to parse");
}
return toReturn;
}
/**
* Parses any JSON-parseable object, returning the value.
*/
public Object parse() throws ParseException {
Object toReturn = anything();
if (!ensureEOF()) {
throw new IllegalStateException("Expected EOF, but still had content to parse");
}
return toReturn;
}
private static String substringBefore(String str, char delim) {
int pos = str.indexOf(delim);
if (pos == -1) {
return str;
}
return str.substring(0, pos);
}
public void setNativeNumbers(boolean value) {
this.nativeNumbers = value;
}
public boolean getNativeNumbers() {
return this.nativeNumbers;
}
final public boolean ensureEOF() throws ParseException {
jj_consume_token(0);
{if ("" != null) {
return true;
}}
throw new Error("Missing return statement in function");
}
final public Object anything() throws ParseException {Object x;
switch (jj_nt.kind) {
case BRACE_OPEN:{
x = object();
break;
}
case BRACKET_OPEN:{
x = list();
break;
}
case NUMBER_INTEGER:
case NUMBER_DECIMAL:
case TRUE:
case FALSE:
case NULL:
case STRING_SINGLE_EMPTY:
case STRING_DOUBLE_EMPTY:
case STRING_SINGLE_NONEMPTY:
case STRING_DOUBLE_NONEMPTY:{
x = value();
break;
}
default:
jj_la1[0] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) {
return x;
}}
throw new Error("Missing return statement in function");
}
final public String objectKey() throws ParseException {Object o;
String key;
switch (jj_nt.kind) {
case STRING_SINGLE_EMPTY:
case STRING_DOUBLE_EMPTY:
case STRING_SINGLE_NONEMPTY:
case STRING_DOUBLE_NONEMPTY:{
key = string();
break;
}
case SYMBOL:{
key = symbol();
break;
}
case NULL:{
nullValue();
key = null;
break;
}
case NUMBER_INTEGER:
case NUMBER_DECIMAL:
case TRUE:
case FALSE:{
switch (jj_nt.kind) {
case TRUE:
case FALSE:{
o = booleanValue();
break;
}
case NUMBER_INTEGER:
case NUMBER_DECIMAL:{
o = number();
break;
}
default:
jj_la1[1] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
key = o.toString();
break;
}
default:
jj_la1[2] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) {
return key;
}}
throw new Error("Missing return statement in function");
}
final public java.util.LinkedHashMap<String, Object> object() throws ParseException {final java.util.LinkedHashMap<String, Object> map = new java.util.LinkedHashMap<String, Object>();
String key;
Object value;
jj_consume_token(BRACE_OPEN);
switch (jj_nt.kind) {
case NUMBER_INTEGER:
case NUMBER_DECIMAL:
case TRUE:
case FALSE:
case NULL:
case STRING_SINGLE_EMPTY:
case STRING_DOUBLE_EMPTY:
case STRING_SINGLE_NONEMPTY:
case STRING_DOUBLE_NONEMPTY:
case SYMBOL:{
key = objectKey();
jj_consume_token(COLON);
value = anything();
map.put(key, value);
key = null; value = null;
label_1:
while (true) {
switch (jj_nt.kind) {
case COMMA:{
;
break;
}
default:
jj_la1[3] = jj_gen;
break label_1;
}
jj_consume_token(COMMA);
key = objectKey();
jj_consume_token(COLON);
value = anything();
map.put(key, value);
key = null; value = null;
}
break;
}
default:
jj_la1[4] = jj_gen;
;
}
jj_consume_token(BRACE_CLOSE);
{if ("" != null) {
return map;
}}
throw new Error("Missing return statement in function");
}
final public java.util.ArrayList<Object> list() throws ParseException {final java.util.ArrayList<Object> list = new java.util.ArrayList<Object>();
Object value;
jj_consume_token(BRACKET_OPEN);
switch (jj_nt.kind) {
case BRACE_OPEN:
case BRACKET_OPEN:
case NUMBER_INTEGER:
case NUMBER_DECIMAL:
case TRUE:
case FALSE:
case NULL:
case STRING_SINGLE_EMPTY:
case STRING_DOUBLE_EMPTY:
case STRING_SINGLE_NONEMPTY:
case STRING_DOUBLE_NONEMPTY:{
value = anything();
list.add(value);
value = null;
label_2:
while (true) {
switch (jj_nt.kind) {
case COMMA:{
;
break;
}
default:
jj_la1[5] = jj_gen;
break label_2;
}
jj_consume_token(COMMA);
value = anything();
list.add(value);
value = null;
}
break;
}
default:
jj_la1[6] = jj_gen;
;
}
jj_consume_token(BRACKET_CLOSE);
list.trimToSize();
{if ("" != null) {
return list;
}}
throw new Error("Missing return statement in function");
}
final public Object value() throws ParseException {Object x;
switch (jj_nt.kind) {
case STRING_SINGLE_EMPTY:
case STRING_DOUBLE_EMPTY:
case STRING_SINGLE_NONEMPTY:
case STRING_DOUBLE_NONEMPTY:{
x = string();
break;
}
case NUMBER_INTEGER:
case NUMBER_DECIMAL:{
x = number();
break;
}
case TRUE:
case FALSE:{
x = booleanValue();
break;
}
case NULL:{
x = nullValue();
break;
}
default:
jj_la1[7] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) {
return x;
}}
throw new Error("Missing return statement in function");
}
final public Object nullValue() throws ParseException {
jj_consume_token(NULL);
{if ("" != null) {
return null;
}}
throw new Error("Missing return statement in function");
}
final public Boolean booleanValue() throws ParseException {Boolean b;
switch (jj_nt.kind) {
case TRUE:{
jj_consume_token(TRUE);
b = Boolean.TRUE;
break;
}
case FALSE:{
jj_consume_token(FALSE);
b = Boolean.FALSE;
break;
}
default:
jj_la1[8] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) {
return b;
}}
throw new Error("Missing return statement in function");
}
final public Number number() throws ParseException {Token t;
switch (jj_nt.kind) {
case NUMBER_DECIMAL:{
t = jj_consume_token(NUMBER_DECIMAL);
if (nativeNumbers) {
{if ("" != null) {
return Long.valueOf(t.image);
}}
} else {
{if ("" != null) {
return new java.math.BigDecimal(t.image);
}}
}
break;
}
case NUMBER_INTEGER:{
t = jj_consume_token(NUMBER_INTEGER);
if (nativeNumbers) {
{if ("" != null) {
return Double.valueOf(t.image);
}}
} else {
{if ("" != null) {
return new java.math.BigInteger(substringBefore(t.image, '.'));
}}
}
break;
}
default:
jj_la1[9] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final public String string() throws ParseException {String s;
switch (jj_nt.kind) {
case STRING_DOUBLE_EMPTY:
case STRING_DOUBLE_NONEMPTY:{
s = doubleQuoteString();
break;
}
case STRING_SINGLE_EMPTY:
case STRING_SINGLE_NONEMPTY:{
s = singleQuoteString();
break;
}
default:
jj_la1[10] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if ("" != null) {
return s;
}}
throw new Error("Missing return statement in function");
}
final public String doubleQuoteString() throws ParseException {
switch (jj_nt.kind) {
case STRING_DOUBLE_EMPTY:{
jj_consume_token(STRING_DOUBLE_EMPTY);
{if ("" != null) {
return "";
}}
break;
}
case STRING_DOUBLE_NONEMPTY:{
jj_consume_token(STRING_DOUBLE_NONEMPTY);
String image = token.image;
{if ("" != null) {
return image.substring(1, image.length() - 1);
}}
break;
}
default:
jj_la1[11] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final public String singleQuoteString() throws ParseException {
switch (jj_nt.kind) {
case STRING_SINGLE_EMPTY:{
jj_consume_token(STRING_SINGLE_EMPTY);
{if ("" != null) {
return "";
}}
break;
}
case STRING_SINGLE_NONEMPTY:{
jj_consume_token(STRING_SINGLE_NONEMPTY);
String image = token.image;
{if ("" != null) {
return image.substring(1, image.length() - 1);
}}
break;
}
default:
jj_la1[12] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final public String symbol() throws ParseException {
jj_consume_token(SYMBOL);
{if ("" != null) {
return token.image;
}}
throw new Error("Missing return statement in function");
}
/** Generated Token Manager. */
public JSONParserTokenManager token_source;
JavaCharStream jj_input_stream;
/** Current token. */
public Token token;
/** Next token. */
public Token jj_nt;
private int jj_gen;
final private int[] jj_la1 = new int[13];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[] {0xccf8480,0x78000,0x1ccf8000,0x40,0x1ccf8000,0x40,0xccf8480,0xccf8000,0x60000,0x18000,0xcc00000,0x8800000,0x4400000,};
}
/** Constructor with InputStream. */
public JSONParser(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public JSONParser(java.io.InputStream stream, String encoding) {
try { jj_input_stream = new JavaCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new JSONParserTokenManager(jj_input_stream);
token = new Token();
token.next = jj_nt = token_source.getNextToken();
jj_gen = 0;
for (int i = 0; i < 13; i++) {
jj_la1[i] = -1;
}
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream, String encoding) {
try { jj_input_stream.ReInit(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source.ReInit(jj_input_stream);
token = new Token();
token.next = jj_nt = token_source.getNextToken();
jj_gen = 0;
for (int i = 0; i < 13; i++) {
jj_la1[i] = -1;
}
}
/** Constructor. */
public JSONParser(java.io.Reader stream) {
jj_input_stream = new JavaCharStream(stream, 1, 1);
token_source = new JSONParserTokenManager(jj_input_stream);
token = new Token();
token.next = jj_nt = token_source.getNextToken();
jj_gen = 0;
for (int i = 0; i < 13; i++) {
jj_la1[i] = -1;
}
}
/** Reinitialise. */
public void ReInit(java.io.Reader stream) {
if (jj_input_stream == null) {
jj_input_stream = new JavaCharStream(stream, 1, 1);
} else {
jj_input_stream.ReInit(stream, 1, 1);
}
if (token_source == null) {
token_source = new JSONParserTokenManager(jj_input_stream);
}
token_source.ReInit(jj_input_stream);
token = new Token();
token.next = jj_nt = token_source.getNextToken();
jj_gen = 0;
for (int i = 0; i < 13; i++) {
jj_la1[i] = -1;
}
}
/** Constructor with generated Token Manager. */
public JSONParser(JSONParserTokenManager tm) {
token_source = tm;
token = new Token();
token.next = jj_nt = token_source.getNextToken();
jj_gen = 0;
for (int i = 0; i < 13; i++) {
jj_la1[i] = -1;
}
}
/** Reinitialise. */
public void ReInit(JSONParserTokenManager tm) {
token_source = tm;
token = new Token();
token.next = jj_nt = token_source.getNextToken();
jj_gen = 0;
for (int i = 0; i < 13; i++) {
jj_la1[i] = -1;
}
}
private Token jj_consume_token(int kind) throws ParseException {
Token oldToken = token;
if ((token = jj_nt).next != null) {
jj_nt = jj_nt.next;
} else {
jj_nt = jj_nt.next = token_source.getNextToken();
}
if (token.kind == kind) {
jj_gen++;
return token;
}
jj_nt = token;
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
/** Get the next Token. */
final public Token getNextToken() {
if ((token = jj_nt).next != null) {
jj_nt = jj_nt.next;
} else {
jj_nt = jj_nt.next = token_source.getNextToken();
}
jj_gen++;
return token;
}
/** Get the specific Token. */
final public Token getToken(int index) {
Token t = token;
for (int i = 0; i < index; i++) {
if (t.next != null) {
t = t.next;
} else {
t = t.next = token_source.getNextToken();
}
}
return t;
}
private java.util.List<int[]> jj_expentries = new java.util.ArrayList<int[]>();
private int[] jj_expentry;
private int jj_kind = -1;
/** Generate ParseException. */
public ParseException generateParseException() {
jj_expentries.clear();
boolean[] la1tokens = new boolean[29];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 13; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1<<j)) != 0) {
la1tokens[j] = true;
}
}
}
}
for (int i = 0; i < 29; i++) {
if (la1tokens[i]) {
jj_expentry = new int[1];
jj_expentry[0] = i;
jj_expentries.add(jj_expentry);
}
}
int[][] exptokseq = new int[jj_expentries.size()][];
for (int i = 0; i < jj_expentries.size(); i++) {
exptokseq[i] = jj_expentries.get(i);
}
return new ParseException(token, exptokseq, tokenImage);
}
private int trace_indent = 0;
private boolean trace_enabled;
/** Trace enabled. */
final public boolean trace_enabled() {
return trace_enabled;
}
/** Enable tracing. */
final public void enable_tracing() {
}
/** Disable tracing. */
final public void disable_tracing() {
}
}