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

Example 56 with JSONLexer

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

the class IntegerCodec method deserialze.

@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
    final JSONLexer lexer = parser.lexer;
    final int token = lexer.token();
    if (token == JSONToken.NULL) {
        lexer.nextToken(JSONToken.COMMA);
        return null;
    }
    Integer intObj;
    try {
        if (token == JSONToken.LITERAL_INT) {
            int val = lexer.intValue();
            lexer.nextToken(JSONToken.COMMA);
            intObj = Integer.valueOf(val);
        } else if (token == JSONToken.LITERAL_FLOAT) {
            BigDecimal number = lexer.decimalValue();
            intObj = TypeUtils.intValue(number);
            lexer.nextToken(JSONToken.COMMA);
        } else {
            if (token == JSONToken.LBRACE) {
                JSONObject jsonObject = new JSONObject(true);
                parser.parseObject(jsonObject);
                intObj = TypeUtils.castToInt(jsonObject);
            } else {
                Object value = parser.parse();
                intObj = TypeUtils.castToInt(value);
            }
        }
    } catch (Exception ex) {
        String message = "parseInt error";
        if (fieldName != null) {
            message += (", field : " + fieldName);
        }
        throw new JSONException(message, ex);
    }
    if (clazz == AtomicInteger.class) {
        return (T) new AtomicInteger(intObj.intValue());
    }
    return (T) intObj;
}

Example 57 with JSONLexer

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

the class LongCodec method deserialze.

@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
    final JSONLexer lexer = parser.lexer;
    Long longObject;
    try {
        final int token = lexer.token();
        if (token == JSONToken.LITERAL_INT) {
            long longValue = lexer.longValue();
            lexer.nextToken(JSONToken.COMMA);
            longObject = Long.valueOf(longValue);
        } else if (token == JSONToken.LITERAL_FLOAT) {
            BigDecimal number = lexer.decimalValue();
            longObject = TypeUtils.longValue(number);
            lexer.nextToken(JSONToken.COMMA);
        } else {
            if (token == JSONToken.LBRACE) {
                JSONObject jsonObject = new JSONObject(true);
                parser.parseObject(jsonObject);
                longObject = TypeUtils.castToLong(jsonObject);
            } else {
                Object value = parser.parse();
                longObject = TypeUtils.castToLong(value);
            }
            if (longObject == null) {
                return null;
            }
        }
    } catch (Exception ex) {
        throw new JSONException("parseLong error, field : " + fieldName, ex);
    }
    return // 
    clazz == AtomicLong.class ? // 
    (T) new AtomicLong(longObject.longValue()) : (T) longObject;
}

Example 58 with JSONLexer

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

the class TimeDeserializer method deserialze.

@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
    JSONLexer lexer = parser.lexer;
    if (lexer.token() == JSONToken.COMMA) {
        lexer.nextToken(JSONToken.LITERAL_STRING);
        if (lexer.token() != JSONToken.LITERAL_STRING) {
            throw new JSONException("syntax error");
        }
        lexer.nextTokenWithColon(JSONToken.LITERAL_INT);
        if (lexer.token() != JSONToken.LITERAL_INT) {
            throw new JSONException("syntax error");
        }
        long time = lexer.longValue();
        lexer.nextToken(JSONToken.RBRACE);
        if (lexer.token() != JSONToken.RBRACE) {
            throw new JSONException("syntax error");
        }
        lexer.nextToken(JSONToken.COMMA);
        return (T) new java.sql.Time(time);
    }
    Object val = parser.parse();
    if (val == null) {
        return null;
    }
    if (val instanceof java.sql.Time) {
        return (T) val;
    } else if (val instanceof BigDecimal) {
        return (T) new java.sql.Time(TypeUtils.longValue((BigDecimal) val));
    } else if (val instanceof Number) {
        return (T) new java.sql.Time(((Number) val).longValue());
    } else if (val instanceof String) {
        String strVal = (String) val;
        if (strVal.length() == 0) {
            return null;
        }
        long longVal;
        JSONScanner dateLexer = new JSONScanner(strVal);
        if (dateLexer.scanISO8601DateIfMatch()) {
            longVal = dateLexer.getCalendar().getTimeInMillis();
        } else {
            boolean isDigit = true;
            for (int i = 0; i < strVal.length(); ++i) {
                char ch = strVal.charAt(i);
                if (ch < '0' || ch > '9') {
                    isDigit = false;
                    break;
                }
            }
            if (!isDigit) {
                dateLexer.close();
                return (T) java.sql.Time.valueOf(strVal);
            }
            longVal = Long.parseLong(strVal);
        }
        dateLexer.close();
        return (T) new java.sql.Time(longVal);
    }
    throw new JSONException("parse error");
}

Example 59 with JSONLexer

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

the class BigDecimalCodec method deserialze.

@SuppressWarnings("unchecked")
public static <T> T deserialze(DefaultJSONParser parser) {
    final JSONLexer lexer = parser.lexer;
    if (lexer.token() == JSONToken.LITERAL_INT) {
        BigDecimal decimalValue = lexer.decimalValue();
        lexer.nextToken(JSONToken.COMMA);
        return (T) decimalValue;
    }
    if (lexer.token() == JSONToken.LITERAL_FLOAT) {
        BigDecimal val = lexer.decimalValue();
        lexer.nextToken(JSONToken.COMMA);
        return (T) val;
    }
    Object value = parser.parse();
    return // 
    value == null ? // 
    null : (T) TypeUtils.castToBigDecimal(value);
}

Example 60 with JSONLexer

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

the class CharArrayCodec method deserialze.

@SuppressWarnings("unchecked")
public static <T> T deserialze(DefaultJSONParser parser) {
    final JSONLexer lexer = parser.lexer;
    if (lexer.token() == JSONToken.LITERAL_STRING) {
        String val = lexer.stringVal();
        lexer.nextToken(JSONToken.COMMA);
        return (T) val.toCharArray();
    }
    if (lexer.token() == JSONToken.LITERAL_INT) {
        Number val = lexer.integerValue();
        lexer.nextToken(JSONToken.COMMA);
        return (T) val.toString().toCharArray();
    }
    Object value = parser.parse();
    if (value instanceof String) {
        return (T) ((String) value).toCharArray();
    }
    if (value instanceof Collection) {
        Collection<?> collection = (Collection) value;
        boolean accept = true;
        for (Object item : collection) {
            if (item instanceof String) {
                int itemLength = ((String) item).length();
                if (itemLength != 1) {
                    accept = false;
                    break;
                }
            }
        }
        if (!accept) {
            throw new JSONException("can not cast to char[]");
        }
        char[] chars = new char[collection.size()];
        int pos = 0;
        for (Object item : collection) {
            chars[pos++] = ((String) item).charAt(0);
        }
        return (T) chars;
    }
    return // 
    value == null ? // 
    null : (T) JSON.toJSONString(value).toCharArray();
}