Examples with JSONLexer com.alibaba.fastjson.parser.JSONLexer used on opensource projects

Example 31 with JSONLexer

use of com.alibaba.fastjson.parser.JSONLexer in project fastjson by alibaba.

the class BooleanCodec method deserialze.

@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
    final JSONLexer lexer = parser.lexer;
    Boolean boolObj;
    try {
        if (lexer.token() == JSONToken.TRUE) {
            lexer.nextToken(JSONToken.COMMA);
            boolObj = Boolean.TRUE;
        } else if (lexer.token() == JSONToken.FALSE) {
            lexer.nextToken(JSONToken.COMMA);
            boolObj = Boolean.FALSE;
        } else if (lexer.token() == JSONToken.LITERAL_INT) {
            int intValue = lexer.intValue();
            lexer.nextToken(JSONToken.COMMA);
            if (intValue == 1) {
                boolObj = Boolean.TRUE;
            } else {
                boolObj = Boolean.FALSE;
            }
        } else {
            Object value = parser.parse();
            if (value == null) {
                return null;
            }
            boolObj = TypeUtils.castToBoolean(value);
        }
    } catch (Exception ex) {
        throw new JSONException("parseBoolean error, field : " + fieldName, ex);
    }
    if (clazz == AtomicBoolean.class) {
        return (T) new AtomicBoolean(boolObj.booleanValue());
    }
    return (T) boolObj;
}

Example 32 with JSONLexer

use of com.alibaba.fastjson.parser.JSONLexer in project fastjson by alibaba.

the class BigIntegerCodec method deserialze.

@SuppressWarnings("unchecked")
public static <T> T deserialze(DefaultJSONParser parser) {
    final JSONLexer lexer = parser.lexer;
    if (lexer.token() == JSONToken.LITERAL_INT) {
        String val = lexer.numberString();
        lexer.nextToken(JSONToken.COMMA);
        if (val.length() > 65535) {
            throw new JSONException("decimal overflow");
        }
        return (T) new BigInteger(val);
    }
    Object value = parser.parse();
    return // 
    value == null ? // 
    null : (T) TypeUtils.castToBigInteger(value);
}

Example 33 with JSONLexer

use of com.alibaba.fastjson.parser.JSONLexer in project fastjson by alibaba.

the class CalendarCodec method deserialze.

@Override
@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type type, Object fieldName, String format, int features) {
    Object value = DateCodec.instance.deserialze(parser, type, fieldName, format, features);
    if (value instanceof Calendar) {
        return (T) value;
    }
    Date date = (Date) value;
    if (date == null) {
        return null;
    }
    JSONLexer lexer = parser.lexer;
    Calendar calendar = Calendar.getInstance(lexer.getTimeZone(), lexer.getLocale());
    calendar.setTime(date);
    if (type == XMLGregorianCalendar.class) {
        return (T) createXMLGregorianCalendar((GregorianCalendar) calendar);
    }
    return (T) calendar;
}

Example 34 with JSONLexer

use of com.alibaba.fastjson.parser.JSONLexer in project fastjson by alibaba.

the class StringCodec method deserialze.

@SuppressWarnings("unchecked")
public static <T> T deserialze(DefaultJSONParser parser) {
    final JSONLexer lexer = parser.getLexer();
    if (lexer.token() == JSONToken.LITERAL_STRING) {
        String val = lexer.stringVal();
        lexer.nextToken(JSONToken.COMMA);
        return (T) val;
    }
    if (lexer.token() == JSONToken.LITERAL_INT) {
        String val = lexer.numberString();
        lexer.nextToken(JSONToken.COMMA);
        return (T) val;
    }
    Object value = parser.parse();
    if (value == null) {
        return null;
    }
    return (T) value.toString();
}

Example 35 with JSONLexer

use of com.alibaba.fastjson.parser.JSONLexer in project fastjson by alibaba.

the class EnumDeserializer method deserialze.

@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type type, Object fieldName) {
    try {
        Object value;
        final JSONLexer lexer = parser.lexer;
        final int token = lexer.token();
        if (token == JSONToken.LITERAL_INT) {
            int intValue = lexer.intValue();
            lexer.nextToken(JSONToken.COMMA);
            if (intValue < 0 || intValue >= ordinalEnums.length) {
                throw new JSONException("parse enum " + enumClass.getName() + " error, value : " + intValue);
            }
            return (T) ordinalEnums[intValue];
        } else if (token == JSONToken.LITERAL_STRING) {
            String name = lexer.stringVal();
            lexer.nextToken(JSONToken.COMMA);
            if (name.length() == 0) {
                return (T) null;
            }
            long hash = fnv1a_64_magic_hashcode;
            long hash_lower = fnv1a_64_magic_hashcode;
            for (int j = 0; j < name.length(); ++j) {
                char ch = name.charAt(j);
                hash ^= ch;
                hash_lower ^= ((ch >= 'A' && ch <= 'Z') ? (ch + 32) : ch);
                hash *= fnv1a_64_magic_prime;
                hash_lower *= fnv1a_64_magic_prime;
            }
            Enum e = getEnumByHashCode(hash);
            if (e == null && hash_lower != hash) {
                e = getEnumByHashCode(hash_lower);
            }
            if (e == null && lexer.isEnabled(Feature.ErrorOnEnumNotMatch)) {
                throw new JSONException("not match enum value, " + enumClass.getName() + " : " + name);
            }
            return (T) e;
        } else if (token == JSONToken.NULL) {
            value = null;
            lexer.nextToken(JSONToken.COMMA);
            return null;
        } else {
            value = parser.parse();
        }
        throw new JSONException("parse enum " + enumClass.getName() + " error, value : " + value);
    } catch (JSONException e) {
        throw e;
    } catch (Exception e) {
        throw new JSONException(e.getMessage(), e);
    }
}