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/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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.android.calculator2;
import android.content.Context;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
public class CalculatorExpressionTokenizer {
private final Map<String, String> mReplacementMap;
public CalculatorExpressionTokenizer(Context context) {
mReplacementMap = new HashMap<>();
mReplacementMap.put(".", context.getString(R.string.dec_point));
mReplacementMap.put("0", context.getString(R.string.digit_0));
mReplacementMap.put("1", context.getString(R.string.digit_1));
mReplacementMap.put("2", context.getString(R.string.digit_2));
mReplacementMap.put("3", context.getString(R.string.digit_3));
mReplacementMap.put("4", context.getString(R.string.digit_4));
mReplacementMap.put("5", context.getString(R.string.digit_5));
mReplacementMap.put("6", context.getString(R.string.digit_6));
mReplacementMap.put("7", context.getString(R.string.digit_7));
mReplacementMap.put("8", context.getString(R.string.digit_8));
mReplacementMap.put("9", context.getString(R.string.digit_9));
mReplacementMap.put("/", context.getString(R.string.op_div));
mReplacementMap.put("*", context.getString(R.string.op_mul));
mReplacementMap.put("-", context.getString(R.string.op_sub));
mReplacementMap.put("cos", context.getString(R.string.fun_cos));
mReplacementMap.put("ln", context.getString(R.string.fun_ln));
mReplacementMap.put("log", context.getString(R.string.fun_log));
mReplacementMap.put("sin", context.getString(R.string.fun_sin));
mReplacementMap.put("tan", context.getString(R.string.fun_tan));
mReplacementMap.put("Infinity", context.getString(R.string.inf));
}
public String getNormalizedExpression(String expr) {
for (Entry<String, String> replacementEntry : mReplacementMap.entrySet()) {
expr = expr.replace(replacementEntry.getValue(), replacementEntry.getKey());
}
return expr;
}
public String getLocalizedExpression(String expr) {
for (Entry<String, String> replacementEntry : mReplacementMap.entrySet()) {
expr = expr.replace(replacementEntry.getKey(), replacementEntry.getValue());
}
return expr;
}
}
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