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Make it possible to build a parser by tokens (#30)
Make it possible to build custom parser by tokens
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60 changes: 60 additions & 0 deletions
60
src/main/java/com/ethlo/time/internal/token/DigitsToken.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| package com.ethlo.time.internal.token; | ||
|
|
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| /*- | ||
| * #%L | ||
| * Internet Time Utility | ||
| * %% | ||
| * Copyright (C) 2017 - 2024 Morten Haraldsen (ethlo) | ||
| * %% | ||
| * 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. | ||
| * #L% | ||
| */ | ||
|
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| import java.text.ParsePosition; | ||
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| import com.ethlo.time.Field; | ||
| import com.ethlo.time.internal.util.LimitedCharArrayIntegerUtil; | ||
| import com.ethlo.time.token.DateTimeToken; | ||
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| public class DigitsToken implements DateTimeToken | ||
| { | ||
| private final Field field; | ||
| private final int length; | ||
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| public DigitsToken(Field field, int length) | ||
| { | ||
| this.field = field; | ||
| this.length = length; | ||
| } | ||
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| @Override | ||
| public int read(String text, ParsePosition parsePosition) | ||
| { | ||
| final int offset = parsePosition.getIndex(); | ||
| final int end = offset + length; | ||
| final int value = LimitedCharArrayIntegerUtil.parsePositiveInt(text, offset, end); | ||
| parsePosition.setIndex(end); | ||
| return value; | ||
| } | ||
|
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| public Field getField() | ||
| { | ||
| return field; | ||
| } | ||
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| @Override | ||
| public String toString() | ||
| { | ||
| return "digits: " + field + "(" + length + ")"; | ||
| } | ||
| } |
61 changes: 61 additions & 0 deletions
61
src/main/java/com/ethlo/time/internal/token/FractionsToken.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| package com.ethlo.time.internal.token; | ||
|
|
||
| /*- | ||
| * #%L | ||
| * Internet Time Utility | ||
| * %% | ||
| * Copyright (C) 2017 - 2024 Morten Haraldsen (ethlo) | ||
| * %% | ||
| * 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. | ||
| * #L% | ||
| */ | ||
|
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| import static com.ethlo.time.internal.util.LimitedCharArrayIntegerUtil.DIGIT_9; | ||
| import static com.ethlo.time.internal.util.LimitedCharArrayIntegerUtil.ZERO; | ||
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| import java.text.ParsePosition; | ||
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| import com.ethlo.time.Field; | ||
| import com.ethlo.time.token.DateTimeToken; | ||
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| public class FractionsToken implements DateTimeToken | ||
| { | ||
| @Override | ||
| public int read(final String text, final ParsePosition parsePosition) | ||
| { | ||
| int idx = parsePosition.getIndex(); | ||
| final int length = text.length(); | ||
| int value = 0; | ||
| while (idx < length) | ||
| { | ||
| final char c = text.charAt(idx); | ||
| if (c < ZERO || c > DIGIT_9) | ||
| { | ||
| break; | ||
| } | ||
| else | ||
| { | ||
| value = value * 10 + (c - ZERO); | ||
| idx++; | ||
| } | ||
| } | ||
| parsePosition.setIndex(idx); | ||
| return value; | ||
| } | ||
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| @Override | ||
| public Field getField() | ||
| { | ||
| return Field.NANO; | ||
| } | ||
| } |
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