toml4j/src/main/java/com/moandjiezana/toml/ValueConverters.java

package com.moandjiezana.toml;

import static com.moandjiezana.toml.ArrayConverter.ARRAY_PARSER;
import static com.moandjiezana.toml.BooleanConverter.BOOLEAN_PARSER;
import static com.moandjiezana.toml.DateConverter.DATE_PARSER;
import static com.moandjiezana.toml.InlineTableConverter.INLINE_TABLE_PARSER;
import static com.moandjiezana.toml.LiteralStringConverter.LITERAL_STRING_PARSER;
import static com.moandjiezana.toml.MultilineLiteralStringConverter.MULTILINE_LITERAL_STRING_CONVERTER;
import static com.moandjiezana.toml.MultilineStringConverter.MULTILINE_STRING_PARSER;
import static com.moandjiezana.toml.NumberConverter.NUMBER_PARSER;
import static com.moandjiezana.toml.StringConverter.STRING_PARSER;

import java.util.concurrent.atomic.AtomicInteger;

class ValueConverters {
  
  static final ValueConverters CONVERTERS = new ValueConverters();
  
  static boolean isComment(String line) {
    if (line == null || line.isEmpty()) {
      return true;
    }

    for (int i = 0; i < line.length(); i++) {
      char c = line.charAt(i);
      if (Character.isWhitespace(c)) {
        continue;
      }

      return c == '#';
    }

    return false;
  }

  Object convert(String value, AtomicInteger index, Context context) {
    String substring = value.substring(index.get());
    for (ValueConverter valueParser : PARSERS) {
      if (valueParser.canConvert(substring)) {
        return valueParser.convert(value, index, context);
      }
    }
    
    Results.Errors errors = new Results.Errors();
    errors.invalidValue(context.identifier.getName(), substring, context.line.get());
    return errors;
  }
  
  private ValueConverters() {}
  
  private static final ValueConverter[] PARSERS = { 
    MULTILINE_STRING_PARSER, MULTILINE_LITERAL_STRING_CONVERTER, LITERAL_STRING_PARSER, STRING_PARSER, DATE_PARSER, NUMBER_PARSER, BOOLEAN_PARSER, ARRAY_PARSER, INLINE_TABLE_PARSER
  };
}