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Exposed API for JsonParser and added methods to Gson to deserialize from a parse tree.

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This commit is contained in:
Inderjeet Singh 2009-02-04 01:56:28 +00:00
parent f4c21abda6
commit 2c7cc620d4
8 changed files with 2026 additions and 1884 deletions
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4
gson/pom.xml
View File

@ -118,7 +118,7 @@
</workspaceCodeStylesURL>
</configuration>
</plugin>
<!-- plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>javacc-maven-plugin</artifactId>
<executions>
@ -141,7 +141,7 @@
<version>4.0</version>
</dependency>
</dependencies>
</plugin -->
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jxr-plugin</artifactId>

57
gson/src/main/java/com/google/gson/Gson.java
View File

@ -363,16 +363,65 @@ public final class Gson {
@SuppressWarnings("unchecked")
public <T> T fromJson(Reader json, Type typeOfT) throws JsonParseException {
try {
JsonParser parser = new JsonParser(json);
JsonElement root = parser.parse();
JsonElement root = JsonParser.parse(json);
JsonDeserializationContext context = new JsonDeserializationContextDefault(
createDefaultObjectNavigatorFactory(), deserializers, objectConstructor);
T target = (T) context.deserialize(root, typeOfT);
return target;
} catch (TokenMgrError e) {
} catch (StackOverflowError e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
} catch (ParseException e) {
} catch (OutOfMemoryError e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
}
}
/**
* This method deserializes the Json read from the specified parse tree into an object of the
* specified type. It is not suitable to use if the specified class is a generic type since it
* will not have the generic type information because of the Type Erasure feature of Java.
* Therefore, this method should not be used if the desired type is a generic type. Note that
* this method works fine if the any of the fields of the specified object are generics, just the
* object itself should not be a generic type. For the cases when the object is of generic type,
* invoke {@link #fromJson(JsonElement, Type)}.
* @param <T> the type of the desired object
* @param json the root of the parse tree of {@link JsonElement}s from which the object is to
* be deserialized
* @param classOfT The class of T
* @return an object of type T from the json
* @throws JsonParseException if json is not a valid representation for an object of type typeOfT
* @since 1.3
*/
@SuppressWarnings("unchecked")
public <T> T fromJson(JsonElement json, Class<T> classOfT) throws JsonParseException {
T target = classOfT.cast(fromJson(json, (Type) classOfT));
return target;
}
/**
* This method deserializes the Json read from the specified parse tree into an object of the
* specified type. This method is useful if the specified object is a generic type. For
* non-generic objects, use {@link #fromJson(JsonElement, Class)} instead.
*
* @param <T> the type of the desired object
* @param json the root of the parse tree of {@link JsonElement}s from which the object is to
* be deserialized
* @param typeOfT The specific genericized type of src. You can obtain this type by using the
* {@link com.google.gson.reflect.TypeToken} class. For example, to get the type for
* {@code Collection<Foo>}, you should use:
* <pre>
* Type typeOfT = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
* </pre>
* @return an object of type T from the json
* @throws JsonParseException if json is not a valid representation for an object of type typeOfT
* @since 1.3
*/
@SuppressWarnings("unchecked")
public <T> T fromJson(JsonElement json, Type typeOfT) throws JsonParseException {
try {
JsonDeserializationContext context = new JsonDeserializationContextDefault(
createDefaultObjectNavigatorFactory(), deserializers, objectConstructor);
T target = (T) context.deserialize(json, typeOfT);
return target;
} catch (StackOverflowError e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
} catch (OutOfMemoryError e) {

716
gson/src/main/java/com/google/gson/JsonParser.java
View File

@ -1,668 +1,64 @@
/* Generated By:JavaCC: Do not edit this line. JsonParser.java */
/*
* Copyright (C) 2009 Google Inc.
*
* 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.google.gson;
@SuppressWarnings("all")
final class JsonParser implements JsonParserConstants {
import java.io.Reader;
import java.io.StringReader;
final public JsonElement parse() throws ParseException {
JsonElement json = null;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 25:
json = JsonObject();
break;
case 29:
json = JsonArray();
break;
case DIGITS:
case NAN:
case INFINITY:
case BOOLEAN:
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
case 31:
json = JsonPrimitive();
break;
case NULL:
json = JsonNull();
break;
default:
jj_la1[0] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return json;}
throw new Error("Missing return statement in function");
/**
* A parser to parse Json into a parse tree of {@link JsonElement}s
*
* @author Inderjeet Singh
* @author Joel Leitch
* @since 1.3
*/
public final class JsonParser {
/**
* Parses the specified JSON string into a parse tree
*
* @param json JSON text
* @return a parse tree of {@link JsonElement}s corresponding to the specified JSON
* @throws JsonParseException if the specified text is not valid JSON
* @since 1.3
*/
public static JsonElement parse(String json) throws JsonParseException {
return parse(new StringReader(json));
}
final private JsonObject JsonObject() throws ParseException {
JsonObject o = new JsonObject();
jj_consume_token(25);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case IDENTIFIER:
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
Members(o);
break;
default:
jj_la1[1] = jj_gen;
;
}
jj_consume_token(26);
{if (true) return o;}
throw new Error("Missing return statement in function");
}
final private JsonNull JsonNull() throws ParseException {
Token t;
t = jj_consume_token(NULL);
{if (true) return JsonNull.createJsonNull();}
throw new Error("Missing return statement in function");
}
final private void Members(JsonObject o) throws ParseException {
Pair(o);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 27:
jj_consume_token(27);
Members(o);
break;
default:
jj_la1[2] = jj_gen;
;
}
}
final private void Pair(JsonObject o) throws ParseException {
JsonPrimitive property;
JsonElement value;
property = JsonMemberName();
jj_consume_token(28);
value = JsonValue();
o.add(property.getAsString(), value);
}
final private JsonPrimitive JsonMemberName() throws ParseException {
Token t; JsonPrimitive value;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case IDENTIFIER:
t = jj_consume_token(IDENTIFIER);
{if (true) return new JsonPrimitive(t.image);}
break;
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
value = JsonString();
{if (true) return value;}
break;
default:
jj_la1[3] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final private JsonArray JsonArray() throws ParseException {
JsonArray array = new JsonArray();
jj_consume_token(29);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case DIGITS:
case NULL:
case NAN:
case INFINITY:
case BOOLEAN:
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
case 25:
case 29:
case 31:
Elements(array);
break;
default:
jj_la1[4] = jj_gen;
;
}
jj_consume_token(30);
array.reverse();
{if (true) return array;}
throw new Error("Missing return statement in function");
}
final private void Elements(JsonArray array) throws ParseException {
JsonElement element;
element = JsonValue();
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 27:
jj_consume_token(27);
Elements(array);
break;
default:
jj_la1[5] = jj_gen;
;
}
array.add(element);
}
final private JsonElement JsonValue() throws ParseException {
JsonElement o = null;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
o = JsonString();
break;
case DIGITS:
case NAN:
case INFINITY:
case 31:
o = JsonNumber();
break;
case 25:
o = JsonObject();
break;
case 29:
o = JsonArray();
break;
case BOOLEAN:
o = JsonBoolean();
break;
case NULL:
o = JsonNull();
break;
default:
jj_la1[6] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return o;}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonBoolean() throws ParseException {
Token t;
t = jj_consume_token(BOOLEAN);
boolean value = Boolean.valueOf(t.image);
{if (true) return new JsonPrimitive(value);}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonPrimitive() throws ParseException {
JsonPrimitive value;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
value = JsonString();
{if (true) return value;}
break;
case DIGITS:
case NAN:
case INFINITY:
case 31:
value = JsonNumber();
{if (true) return value;}
break;
case BOOLEAN:
value = JsonBoolean();
{if (true) return value;}
break;
default:
jj_la1[7] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonNumber() throws ParseException {
String intpart = null,
fracpart = null,
exppart = null;
JsonPrimitive value;
if (jj_2_1(2)) {
value = JsonSpecialNumbers();
{if (true) return value;}
} else {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case DIGITS:
case 31:
intpart = JsonInt();
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 32:
fracpart = JsonFrac();
break;
default:
jj_la1[8] = jj_gen;
;
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case E:
exppart = JsonExp();
break;
default:
jj_la1[9] = jj_gen;
;
}
Number n;
if (exppart != null || fracpart != null) {
fracpart = (fracpart == null) ? "" : fracpart;
exppart = (exppart == null) ? "" : exppart;
n = new java.math.BigDecimal(intpart + fracpart + exppart);
} else {
n = new java.math.BigInteger(intpart);
}
{if (true) return new JsonPrimitive(n);}
break;
default:
jj_la1[10] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonSpecialNumbers() throws ParseException {
boolean negative = false;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case NAN:
jj_consume_token(NAN);
{if (true) return new JsonPrimitive(Double.NaN);}
break;
case INFINITY:
case 31:
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 31:
jj_consume_token(31);
negative = true;
break;
default:
jj_la1[11] = jj_gen;
;
}
jj_consume_token(INFINITY);
{if (true) return new JsonPrimitive(negative ? Double.NEGATIVE_INFINITY : Double.POSITIVE_INFINITY);}
break;
default:
jj_la1[12] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final private String JsonInt() throws ParseException {
String digits;
boolean negative = false;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 31:
jj_consume_token(31);
negative = true;
break;
default:
jj_la1[13] = jj_gen;
;
}
digits = Digits();
if(negative)
{if (true) return "-" + digits;}
{if (true) return digits;}
throw new Error("Missing return statement in function");
}
final private String JsonFrac() throws ParseException {
String digits;
jj_consume_token(32);
digits = Digits();
{if (true) return "." + digits;}
throw new Error("Missing return statement in function");
}
final private String JsonExp() throws ParseException {
Token t;
String digits;
t = jj_consume_token(E);
digits = Digits();
{if (true) return t.image + digits;}
throw new Error("Missing return statement in function");
}
final private String Digits() throws ParseException {
Token t;
t = jj_consume_token(DIGITS);
{if (true) return t.image;}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonString() throws ParseException {
Token t;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SINGLE_QUOTE_LITERAL:
t = jj_consume_token(SINGLE_QUOTE_LITERAL);
break;
case DOUBLE_QUOTE_LITERAL:
t = jj_consume_token(DOUBLE_QUOTE_LITERAL);
break;
default:
jj_la1[14] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
String value = StringUnmarshaller.unmarshall(t.image);
{if (true) return new JsonPrimitive(value);}
throw new Error("Missing return statement in function");
}
final private boolean jj_2_1(int xla) {
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return !jj_3_1(); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(0, xla); }
}
final private boolean jj_3R_4() {
if (jj_scan_token(31)) return true;
return false;
}
final private boolean jj_3R_3() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_4()) jj_scanpos = xsp;
if (jj_scan_token(INFINITY)) return true;
return false;
}
final private boolean jj_3_1() {
if (jj_3R_1()) return true;
return false;
}
final private boolean jj_3R_2() {
if (jj_scan_token(NAN)) return true;
return false;
}
final private boolean jj_3R_1() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_2()) {
jj_scanpos = xsp;
if (jj_3R_3()) return true;
}
return false;
}
public JsonParserTokenManager token_source;
SimpleCharStream jj_input_stream;
public Token token, jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
public boolean lookingAhead = false;
private boolean jj_semLA;
private int jj_gen;
final private int[] jj_la1 = new int[15];
static private int[] jj_la1_0;
static private int[] jj_la1_1;
static {
jj_la1_0();
jj_la1_1();
}
private static void jj_la1_0() {
jj_la1_0 = new int[] {0xa20187c0,0x18800,0x8000000,0x18800,0xa20187c0,0x8000000,0xa20187c0,0x80018740,0x0,0x20,0x80000040,0x80000000,0x80000300,0x80000000,0x18000,};
}
private static void jj_la1_1() {
jj_la1_1 = new int[] {0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x0,0x0,0x0,};
}
final private JJCalls[] jj_2_rtns = new JJCalls[1];
private boolean jj_rescan = false;
private int jj_gc = 0;
public JsonParser(java.io.InputStream stream) {
this(stream, null);
}
public JsonParser(java.io.InputStream stream, String encoding) {
try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new JsonParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
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();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public JsonParser(java.io.Reader stream) {
jj_input_stream = new SimpleCharStream(stream, 1, 1);
token_source = new JsonParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public void ReInit(java.io.Reader stream) {
jj_input_stream.ReInit(stream, 1, 1);
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public JsonParser(JsonParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public void ReInit(JsonParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
final private Token jj_consume_token(int kind) throws ParseException {
Token oldToken;
if ((oldToken = token).next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
if (token.kind == kind) {
jj_gen++;
if (++jj_gc > 100) {
jj_gc = 0;
for (int i = 0; i < jj_2_rtns.length; i++) {
JJCalls c = jj_2_rtns[i];
while (c != null) {
if (c.gen < jj_gen) c.first = null;
c = c.next;
}
}
}
return token;
}
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
static private final class LookaheadSuccess extends java.lang.Error { }
final private LookaheadSuccess jj_ls = new LookaheadSuccess();
final private boolean jj_scan_token(int kind) {
if (jj_scanpos == jj_lastpos) {
jj_la--;
if (jj_scanpos.next == null) {
jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
} else {
jj_lastpos = jj_scanpos = jj_scanpos.next;
}
} else {
jj_scanpos = jj_scanpos.next;
}
if (jj_rescan) {
int i = 0; Token tok = token;
while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
if (tok != null) jj_add_error_token(kind, i);
}
if (jj_scanpos.kind != kind) return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
return false;
}
final public Token getNextToken() {
if (token.next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
jj_gen++;
return token;
}
final public Token getToken(int index) {
Token t = lookingAhead ? jj_scanpos : token;
for (int i = 0; i < index; i++) {
if (t.next != null) t = t.next;
else t = t.next = token_source.getNextToken();
}
return t;
}
final private int jj_ntk() {
if ((jj_nt=token.next) == null)
return (jj_ntk = (token.next=token_source.getNextToken()).kind);
else
return (jj_ntk = jj_nt.kind);
}
private java.util.Vector jj_expentries = new java.util.Vector();
private int[] jj_expentry;
private int jj_kind = -1;
private int[] jj_lasttokens = new int[100];
private int jj_endpos;
private void jj_add_error_token(int kind, int pos) {
if (pos >= 100) return;
if (pos == jj_endpos + 1) {
jj_lasttokens[jj_endpos++] = kind;
} else if (jj_endpos != 0) {
jj_expentry = new int[jj_endpos];
for (int i = 0; i < jj_endpos; i++) {
jj_expentry[i] = jj_lasttokens[i];
}
boolean exists = false;
for (java.util.Enumeration e = jj_expentries.elements(); e.hasMoreElements();) {
int[] oldentry = (int[])(e.nextElement());
if (oldentry.length == jj_expentry.length) {
exists = true;
for (int i = 0; i < jj_expentry.length; i++) {
if (oldentry[i] != jj_expentry[i]) {
exists = false;
break;
}
}
if (exists) break;
}
}
if (!exists) jj_expentries.addElement(jj_expentry);
if (pos != 0) jj_lasttokens[(jj_endpos = pos) - 1] = kind;
}
}
public ParseException generateParseException() {
jj_expentries.removeAllElements();
boolean[] la1tokens = new boolean[33];
for (int i = 0; i < 33; i++) {
la1tokens[i] = false;
}
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 15; 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;
}
if ((jj_la1_1[i] & (1<<j)) != 0) {
la1tokens[32+j] = true;
}
}
}
}
for (int i = 0; i < 33; i++) {
if (la1tokens[i]) {
jj_expentry = new int[1];
jj_expentry[0] = i;
jj_expentries.addElement(jj_expentry);
}
}
jj_endpos = 0;
jj_rescan_token();
jj_add_error_token(0, 0);
int[][] exptokseq = new int[jj_expentries.size()][];
for (int i = 0; i < jj_expentries.size(); i++) {
exptokseq[i] = (int[])jj_expentries.elementAt(i);
}
return new ParseException(token, exptokseq, tokenImage);
}
final public void enable_tracing() {
}
final public void disable_tracing() {
}
final private void jj_rescan_token() {
jj_rescan = true;
for (int i = 0; i < 1; i++) {
/**
* Parses the specified JSON string into a parse tree
*
* @param json JSON text
* @return a parse tree of {@link JsonElement}s corresponding to the specified JSON
* @throws JsonParseException if the specified text is not valid JSON
* @since 1.3
*/
public static JsonElement parse(Reader json) throws JsonParseException {
try {
JJCalls p = jj_2_rtns[i];
do {
if (p.gen > jj_gen) {
jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
switch (i) {
case 0: jj_3_1(); break;
}
}
p = p.next;
} while (p != null);
} catch(LookaheadSuccess ls) { }
JsonParserImpl parser = new JsonParserImpl(json);
return parser.parse();
} catch (TokenMgrError e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
} catch (ParseException e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
} catch (StackOverflowError e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
} catch (OutOfMemoryError e) {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
}
jj_rescan = false;
}
final private void jj_save(int index, int xla) {
JJCalls p = jj_2_rtns[index];
while (p.gen > jj_gen) {
if (p.next == null) { p = p.next = new JJCalls(); break; }
p = p.next;
}
p.gen = jj_gen + xla - jj_la; p.first = token; p.arg = xla;
}
static final class JJCalls {
int gen;
Token first;
int arg;
JJCalls next;
}
}

668
gson/src/main/java/com/google/gson/JsonParserImpl.java Normal file
View File

@ -0,0 +1,668 @@
/* Generated By:JavaCC: Do not edit this line. JsonParserImpl.java */
package com.google.gson;
@SuppressWarnings("all")
final class JsonParserImpl implements JsonParserImplConstants {
final public JsonElement parse() throws ParseException {
JsonElement json = null;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 25:
json = JsonObject();
break;
case 29:
json = JsonArray();
break;
case DIGITS:
case NAN:
case INFINITY:
case BOOLEAN:
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
case 31:
json = JsonPrimitive();
break;
case NULL:
json = JsonNull();
break;
default:
jj_la1[0] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return json;}
throw new Error("Missing return statement in function");
}
final private JsonObject JsonObject() throws ParseException {
JsonObject o = new JsonObject();
jj_consume_token(25);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case IDENTIFIER:
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
Members(o);
break;
default:
jj_la1[1] = jj_gen;
;
}
jj_consume_token(26);
{if (true) return o;}
throw new Error("Missing return statement in function");
}
final private JsonNull JsonNull() throws ParseException {
Token t;
t = jj_consume_token(NULL);
{if (true) return JsonNull.createJsonNull();}
throw new Error("Missing return statement in function");
}
final private void Members(JsonObject o) throws ParseException {
Pair(o);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 27:
jj_consume_token(27);
Members(o);
break;
default:
jj_la1[2] = jj_gen;
;
}
}
final private void Pair(JsonObject o) throws ParseException {
JsonPrimitive property;
JsonElement value;
property = JsonMemberName();
jj_consume_token(28);
value = JsonValue();
o.add(property.getAsString(), value);
}
final private JsonPrimitive JsonMemberName() throws ParseException {
Token t; JsonPrimitive value;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case IDENTIFIER:
t = jj_consume_token(IDENTIFIER);
{if (true) return new JsonPrimitive(t.image);}
break;
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
value = JsonString();
{if (true) return value;}
break;
default:
jj_la1[3] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final private JsonArray JsonArray() throws ParseException {
JsonArray array = new JsonArray();
jj_consume_token(29);
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case DIGITS:
case NULL:
case NAN:
case INFINITY:
case BOOLEAN:
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
case 25:
case 29:
case 31:
Elements(array);
break;
default:
jj_la1[4] = jj_gen;
;
}
jj_consume_token(30);
array.reverse();
{if (true) return array;}
throw new Error("Missing return statement in function");
}
final private void Elements(JsonArray array) throws ParseException {
JsonElement element;
element = JsonValue();
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 27:
jj_consume_token(27);
Elements(array);
break;
default:
jj_la1[5] = jj_gen;
;
}
array.add(element);
}
final private JsonElement JsonValue() throws ParseException {
JsonElement o = null;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
o = JsonString();
break;
case DIGITS:
case NAN:
case INFINITY:
case 31:
o = JsonNumber();
break;
case 25:
o = JsonObject();
break;
case 29:
o = JsonArray();
break;
case BOOLEAN:
o = JsonBoolean();
break;
case NULL:
o = JsonNull();
break;
default:
jj_la1[6] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
{if (true) return o;}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonBoolean() throws ParseException {
Token t;
t = jj_consume_token(BOOLEAN);
boolean value = Boolean.valueOf(t.image);
{if (true) return new JsonPrimitive(value);}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonPrimitive() throws ParseException {
JsonPrimitive value;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SINGLE_QUOTE_LITERAL:
case DOUBLE_QUOTE_LITERAL:
value = JsonString();
{if (true) return value;}
break;
case DIGITS:
case NAN:
case INFINITY:
case 31:
value = JsonNumber();
{if (true) return value;}
break;
case BOOLEAN:
value = JsonBoolean();
{if (true) return value;}
break;
default:
jj_la1[7] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonNumber() throws ParseException {
String intpart = null,
fracpart = null,
exppart = null;
JsonPrimitive value;
if (jj_2_1(2)) {
value = JsonSpecialNumbers();
{if (true) return value;}
} else {
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case DIGITS:
case 31:
intpart = JsonInt();
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 32:
fracpart = JsonFrac();
break;
default:
jj_la1[8] = jj_gen;
;
}
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case E:
exppart = JsonExp();
break;
default:
jj_la1[9] = jj_gen;
;
}
Number n;
if (exppart != null || fracpart != null) {
fracpart = (fracpart == null) ? "" : fracpart;
exppart = (exppart == null) ? "" : exppart;
n = new java.math.BigDecimal(intpart + fracpart + exppart);
} else {
n = new java.math.BigInteger(intpart);
}
{if (true) return new JsonPrimitive(n);}
break;
default:
jj_la1[10] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonSpecialNumbers() throws ParseException {
boolean negative = false;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case NAN:
jj_consume_token(NAN);
{if (true) return new JsonPrimitive(Double.NaN);}
break;
case INFINITY:
case 31:
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 31:
jj_consume_token(31);
negative = true;
break;
default:
jj_la1[11] = jj_gen;
;
}
jj_consume_token(INFINITY);
{if (true) return new JsonPrimitive(negative ? Double.NEGATIVE_INFINITY : Double.POSITIVE_INFINITY);}
break;
default:
jj_la1[12] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
final private String JsonInt() throws ParseException {
String digits;
boolean negative = false;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case 31:
jj_consume_token(31);
negative = true;
break;
default:
jj_la1[13] = jj_gen;
;
}
digits = Digits();
if(negative)
{if (true) return "-" + digits;}
{if (true) return digits;}
throw new Error("Missing return statement in function");
}
final private String JsonFrac() throws ParseException {
String digits;
jj_consume_token(32);
digits = Digits();
{if (true) return "." + digits;}
throw new Error("Missing return statement in function");
}
final private String JsonExp() throws ParseException {
Token t;
String digits;
t = jj_consume_token(E);
digits = Digits();
{if (true) return t.image + digits;}
throw new Error("Missing return statement in function");
}
final private String Digits() throws ParseException {
Token t;
t = jj_consume_token(DIGITS);
{if (true) return t.image;}
throw new Error("Missing return statement in function");
}
final private JsonPrimitive JsonString() throws ParseException {
Token t;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SINGLE_QUOTE_LITERAL:
t = jj_consume_token(SINGLE_QUOTE_LITERAL);
break;
case DOUBLE_QUOTE_LITERAL:
t = jj_consume_token(DOUBLE_QUOTE_LITERAL);
break;
default:
jj_la1[14] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
String value = StringUnmarshaller.unmarshall(t.image);
{if (true) return new JsonPrimitive(value);}
throw new Error("Missing return statement in function");
}
final private boolean jj_2_1(int xla) {
jj_la = xla; jj_lastpos = jj_scanpos = token;
try { return !jj_3_1(); }
catch(LookaheadSuccess ls) { return true; }
finally { jj_save(0, xla); }
}
final private boolean jj_3R_4() {
if (jj_scan_token(31)) return true;
return false;
}
final private boolean jj_3R_3() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_4()) jj_scanpos = xsp;
if (jj_scan_token(INFINITY)) return true;
return false;
}
final private boolean jj_3_1() {
if (jj_3R_1()) return true;
return false;
}
final private boolean jj_3R_2() {
if (jj_scan_token(NAN)) return true;
return false;
}
final private boolean jj_3R_1() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_2()) {
jj_scanpos = xsp;
if (jj_3R_3()) return true;
}
return false;
}
public JsonParserImplTokenManager token_source;
SimpleCharStream jj_input_stream;
public Token token, jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
public boolean lookingAhead = false;
private boolean jj_semLA;
private int jj_gen;
final private int[] jj_la1 = new int[15];
static private int[] jj_la1_0;
static private int[] jj_la1_1;
static {
jj_la1_0();
jj_la1_1();
}
private static void jj_la1_0() {
jj_la1_0 = new int[] {0xa20187c0,0x18800,0x8000000,0x18800,0xa20187c0,0x8000000,0xa20187c0,0x80018740,0x0,0x20,0x80000040,0x80000000,0x80000300,0x80000000,0x18000,};
}
private static void jj_la1_1() {
jj_la1_1 = new int[] {0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x0,0x0,0x0,};
}
final private JJCalls[] jj_2_rtns = new JJCalls[1];
private boolean jj_rescan = false;
private int jj_gc = 0;
public JsonParserImpl(java.io.InputStream stream) {
this(stream, null);
}
public JsonParserImpl(java.io.InputStream stream, String encoding) {
try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new JsonParserImplTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
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();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public JsonParserImpl(java.io.Reader stream) {
jj_input_stream = new SimpleCharStream(stream, 1, 1);
token_source = new JsonParserImplTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public void ReInit(java.io.Reader stream) {
jj_input_stream.ReInit(stream, 1, 1);
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public JsonParserImpl(JsonParserImplTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
public void ReInit(JsonParserImplTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 15; i++) jj_la1[i] = -1;
for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
}
final private Token jj_consume_token(int kind) throws ParseException {
Token oldToken;
if ((oldToken = token).next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
if (token.kind == kind) {
jj_gen++;
if (++jj_gc > 100) {
jj_gc = 0;
for (int i = 0; i < jj_2_rtns.length; i++) {
JJCalls c = jj_2_rtns[i];
while (c != null) {
if (c.gen < jj_gen) c.first = null;
c = c.next;
}
}
}
return token;
}
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
static private final class LookaheadSuccess extends java.lang.Error { }
final private LookaheadSuccess jj_ls = new LookaheadSuccess();
final private boolean jj_scan_token(int kind) {
if (jj_scanpos == jj_lastpos) {
jj_la--;
if (jj_scanpos.next == null) {
jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
} else {
jj_lastpos = jj_scanpos = jj_scanpos.next;
}
} else {
jj_scanpos = jj_scanpos.next;
}
if (jj_rescan) {
int i = 0; Token tok = token;
while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
if (tok != null) jj_add_error_token(kind, i);
}
if (jj_scanpos.kind != kind) return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
return false;
}
final public Token getNextToken() {
if (token.next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
jj_gen++;
return token;
}
final public Token getToken(int index) {
Token t = lookingAhead ? jj_scanpos : token;
for (int i = 0; i < index; i++) {
if (t.next != null) t = t.next;
else t = t.next = token_source.getNextToken();
}
return t;
}
final private int jj_ntk() {
if ((jj_nt=token.next) == null)
return (jj_ntk = (token.next=token_source.getNextToken()).kind);
else
return (jj_ntk = jj_nt.kind);
}
private java.util.Vector jj_expentries = new java.util.Vector();
private int[] jj_expentry;
private int jj_kind = -1;
private int[] jj_lasttokens = new int[100];
private int jj_endpos;
private void jj_add_error_token(int kind, int pos) {
if (pos >= 100) return;
if (pos == jj_endpos + 1) {
jj_lasttokens[jj_endpos++] = kind;
} else if (jj_endpos != 0) {
jj_expentry = new int[jj_endpos];
for (int i = 0; i < jj_endpos; i++) {
jj_expentry[i] = jj_lasttokens[i];
}
boolean exists = false;
for (java.util.Enumeration e = jj_expentries.elements(); e.hasMoreElements();) {
int[] oldentry = (int[])(e.nextElement());
if (oldentry.length == jj_expentry.length) {
exists = true;
for (int i = 0; i < jj_expentry.length; i++) {
if (oldentry[i] != jj_expentry[i]) {
exists = false;
break;
}
}
if (exists) break;
}
}
if (!exists) jj_expentries.addElement(jj_expentry);
if (pos != 0) jj_lasttokens[(jj_endpos = pos) - 1] = kind;
}
}
public ParseException generateParseException() {
jj_expentries.removeAllElements();
boolean[] la1tokens = new boolean[33];
for (int i = 0; i < 33; i++) {
la1tokens[i] = false;
}
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 15; 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;
}
if ((jj_la1_1[i] & (1<<j)) != 0) {
la1tokens[32+j] = true;
}
}
}
}
for (int i = 0; i < 33; i++) {
if (la1tokens[i]) {
jj_expentry = new int[1];
jj_expentry[0] = i;
jj_expentries.addElement(jj_expentry);
}
}
jj_endpos = 0;
jj_rescan_token();
jj_add_error_token(0, 0);
int[][] exptokseq = new int[jj_expentries.size()][];
for (int i = 0; i < jj_expentries.size(); i++) {
exptokseq[i] = (int[])jj_expentries.elementAt(i);
}
return new ParseException(token, exptokseq, tokenImage);
}
final public void enable_tracing() {
}
final public void disable_tracing() {
}
final private void jj_rescan_token() {
jj_rescan = true;
for (int i = 0; i < 1; i++) {
try {
JJCalls p = jj_2_rtns[i];
do {
if (p.gen > jj_gen) {
jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
switch (i) {
case 0: jj_3_1(); break;
}
}
p = p.next;
} while (p != null);
} catch(LookaheadSuccess ls) { }
}
jj_rescan = false;
}
final private void jj_save(int index, int xla) {
JJCalls p = jj_2_rtns[index];
while (p.gen > jj_gen) {
if (p.next == null) { p = p.next = new JJCalls(); break; }
p = p.next;
}
p.gen = jj_gen + xla - jj_la; p.first = token; p.arg = xla;
}
static final class JJCalls {
int gen;
Token first;
int arg;
JJCalls next;
}
}

136
gson/src/main/java/com/google/gson/JsonParserConstants.java → gson/src/main/java/com/google/gson/JsonParserImplConstants.java Executable file → Normal file
View File

@ -1,68 +1,68 @@
/* Generated By:JavaCC: Do not edit this line. JsonParserConstants.java */
package com.google.gson;
@SuppressWarnings("all")
interface JsonParserConstants {
int EOF = 0;
int E = 5;
int DIGITS = 6;
int NULL = 7;
int NAN = 8;
int INFINITY = 9;
int BOOLEAN = 10;
int IDENTIFIER = 11;
int HEX_CHAR = 12;
int UNICODE_CHAR = 13;
int ESCAPE_CHAR = 14;
int SINGLE_QUOTE_LITERAL = 15;
int DOUBLE_QUOTE_LITERAL = 16;
int QUOTE = 17;
int ENDQUOTE = 19;
int CHAR = 20;
int CNTRL_ESC = 21;
int HEX = 23;
int HEX_ESC = 24;
int DEFAULT = 0;
int STRING_STATE = 1;
int ESC_STATE = 2;
int HEX_STATE = 3;
String[] tokenImage = {
"<EOF>",
"\" \"",
"\"\\t\"",
"\"\\n\"",
"\"\\r\"",
"<E>",
"<DIGITS>",
"\"null\"",
"\"NaN\"",
"\"Infinity\"",
"<BOOLEAN>",
"<IDENTIFIER>",
"<HEX_CHAR>",
"<UNICODE_CHAR>",
"<ESCAPE_CHAR>",
"<SINGLE_QUOTE_LITERAL>",
"<DOUBLE_QUOTE_LITERAL>",
"\"\\\"\"",
"\"\\\\\"",
"<ENDQUOTE>",
"<CHAR>",
"<CNTRL_ESC>",
"\"u\"",
"<HEX>",
"<HEX_ESC>",
"\"{\"",
"\"}\"",
"\",\"",
"\":\"",
"\"[\"",
"\"]\"",
"\"-\"",
"\".\"",
};
}
/* Generated By:JavaCC: Do not edit this line. JsonParserImplConstants.java */
package com.google.gson;
@SuppressWarnings("all")
interface JsonParserImplConstants {
int EOF = 0;
int E = 5;
int DIGITS = 6;
int NULL = 7;
int NAN = 8;
int INFINITY = 9;
int BOOLEAN = 10;
int IDENTIFIER = 11;
int HEX_CHAR = 12;
int UNICODE_CHAR = 13;
int ESCAPE_CHAR = 14;
int SINGLE_QUOTE_LITERAL = 15;
int DOUBLE_QUOTE_LITERAL = 16;
int QUOTE = 17;
int ENDQUOTE = 19;
int CHAR = 20;
int CNTRL_ESC = 21;
int HEX = 23;
int HEX_ESC = 24;
int DEFAULT = 0;
int STRING_STATE = 1;
int ESC_STATE = 2;
int HEX_STATE = 3;
String[] tokenImage = {
"<EOF>",
"\" \"",
"\"\\t\"",
"\"\\n\"",
"\"\\r\"",
"<E>",
"<DIGITS>",
"\"null\"",
"\"NaN\"",
"\"Infinity\"",
"<BOOLEAN>",
"<IDENTIFIER>",
"<HEX_CHAR>",
"<UNICODE_CHAR>",
"<ESCAPE_CHAR>",
"<SINGLE_QUOTE_LITERAL>",
"<DOUBLE_QUOTE_LITERAL>",
"\"\\\"\"",
"\"\\\\\"",
"<ENDQUOTE>",
"<CHAR>",
"<CNTRL_ESC>",
"\"u\"",
"<HEX>",
"<HEX_ESC>",
"\"{\"",
"\"}\"",
"\",\"",
"\":\"",
"\"[\"",
"\"]\"",
"\"-\"",
"\".\"",
};
}

2294
gson/src/main/java/com/google/gson/JsonParserTokenManager.java → gson/src/main/java/com/google/gson/JsonParserImplTokenManager.java Executable file → Normal file
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File diff suppressed because it is too large Load Diff

6
gson/src/main/javacc/JsonParser.jj
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@ -9,16 +9,16 @@ options {
UNICODE_INPUT = true;
}
PARSER_BEGIN(JsonParser)
PARSER_BEGIN(JsonParserImpl)
package com.google.gson;
@SuppressWarnings("all")
final class JsonParser {
final class JsonParserImpl {
}
PARSER_END(JsonParser)
PARSER_END(JsonParserImpl)
SKIP : { " " | "\t" | "\n" | "\r" }
/*

29
gson/src/test/java/com/google/gson/JsonParserTest.java Normal file
View File

@ -0,0 +1,29 @@
package com.google.gson;
import junit.framework.TestCase;
import java.io.StringReader;
/**
* Unit test for {@link JsonParser}
*
* @author Inderjeet Singh
*/
public class JsonParserTest extends TestCase {
public void testParseString() {
String json = "{a:10,b:'c'}";
JsonElement e = JsonParser.parse(json);
assertTrue(e.isJsonObject());
assertEquals(10, e.getAsJsonObject().get("a").getAsInt());
assertEquals("c", e.getAsJsonObject().get("b").getAsString());
}
public void testParseReader() {
StringReader reader = new StringReader("{a:10,b:'c'}");
JsonElement e = JsonParser.parse(reader);
assertTrue(e.isJsonObject());
assertEquals(10, e.getAsJsonObject().get("a").getAsInt());
assertEquals("c", e.getAsJsonObject().get("b").getAsString());
}
}