/*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.9.0b1)
- * Copyright (C) 2015 The Jalview Authors
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
*
* This file is part of Jalview.
*
import jalview.util.MessageManager;
import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashSet;
+import java.util.HashMap;
import java.util.Hashtable;
+import java.util.List;
+import java.util.Map;
import java.util.Stack;
-import java.util.Vector;
public class Rna
{
- static Hashtable<Integer, Integer> pairHash = new Hashtable();
-
- private static final Character[] openingPars = { '(', '[', '{', '<', 'A',
- 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
- 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
-
- private static final Character[] closingPars = { ')', ']', '}', '>', 'a',
- 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };
-
- private static HashSet<Character> openingParsSet = new HashSet<Character>(
- Arrays.asList(openingPars));
-
- private static HashSet<Character> closingParsSet = new HashSet<Character>(
- Arrays.asList(closingPars));
+ /**
+ * Answers true if the character is a valid open pair rna secondary structure
+ * symbol. Currently accepts A-Z, ([{<
+ *
+ * @param c
+ * @return
+ */
+ public static boolean isOpeningParenthesis(char c)
+ {
+ return ('A' <= c && c <= 'Z' || c == '(' || c == '[' || c == '{'
+ || c == '<');
+ }
- private static Hashtable<Character, Character> closingToOpening = new Hashtable<Character, Character>()
- // Initializing final data structure
+ /**
+ * Answers true if the string is a valid open pair rna secondary structure
+ * symbol. Currently accepts A-Z, ([{<
+ *
+ * @param s
+ * @return
+ */
+ public static boolean isOpeningParenthesis(String s)
{
- private static final long serialVersionUID = 1L;
- {
- for (int i = 0; i < openingPars.length; i++)
- {
- // System.out.println(closingPars[i] + "->" + openingPars[i]);
- put(closingPars[i], openingPars[i]);
- }
- }
- };
+ return s != null && s.length() == 1
+ && isOpeningParenthesis(s.charAt(0));
+ }
- private static boolean isOpeningParenthesis(char c)
+ /**
+ * Answers true if the character is a valid close pair rna secondary structure
+ * symbol. Currently accepts a-z, )]}>
+ *
+ * @param c
+ * @return
+ */
+ public static boolean isClosingParenthesis(char c)
{
- return openingParsSet.contains(c);
+ return ('a' <= c && c <= 'z' || c == ')' || c == ']' || c == '}'
+ || c == '>');
}
- private static boolean isClosingParenthesis(char c)
+ /**
+ * Answers true if the string is a valid close pair rna secondary structure
+ * symbol. Currently accepts a-z, )]}>
+ *
+ * @param s
+ * @return
+ */
+ public static boolean isClosingParenthesis(String s)
{
- return closingParsSet.contains(c);
+ return s != null && s.length() == 1
+ && isClosingParenthesis(s.charAt(0));
}
- private static char matchingOpeningParenthesis(char closingParenthesis)
- throws WUSSParseException
+ /**
+ * Returns the matching open pair symbol for the given closing symbol.
+ * Currently returns A-Z for a-z, or ([{< for )]}>, or the input symbol if it
+ * is not a valid closing symbol.
+ *
+ * @param c
+ * @return
+ */
+ public static char getMatchingOpeningParenthesis(char c)
{
- if (!isClosingParenthesis(closingParenthesis))
+ if ('a' <= c && c <= 'z')
{
- throw new WUSSParseException(
- MessageManager.formatMessage(
- "exception.querying_matching_opening_parenthesis_for_non_closing_parenthesis",
- new String[] { new StringBuffer(closingParenthesis)
- .toString() }), -1);
+ return (char) (c + 'A' - 'a');
+ }
+ switch (c)
+ {
+ case ')':
+ return '(';
+ case ']':
+ return '[';
+ case '}':
+ return '{';
+ case '>':
+ return '<';
+ default:
+ return c;
}
-
- return closingToOpening.get(closingParenthesis);
}
/**
* Based off of RALEE code ralee-get-base-pairs. Keeps track of open bracket
* positions in "stack" vector. When a close bracket is reached, pair this
- * with the last element in the "stack" vector and store in "pairs" vector.
- * Remove last element in the "stack" vector. Continue in this manner until
- * the whole string is processed.
+ * with the last matching element in the "stack" vector and store in "pairs"
+ * vector. Remove last element in the "stack" vector. Continue in this manner
+ * until the whole string is processed. Parse errors are thrown as exceptions
+ * wrapping the error location - position of the first unmatched closing
+ * bracket, or string length if there is an unmatched opening bracket.
*
* @param line
* Secondary structure line of an RNA Stockholm file
- * @return Array of SequenceFeature; type = RNA helix, begin is open base
- * pair, end is close base pair
+ * @return
+ * @throw {@link WUSSParseException}
*/
- public static Vector<SimpleBP> GetSimpleBPs(CharSequence line)
+ protected static List<SimpleBP> getSimpleBPs(CharSequence line)
throws WUSSParseException
{
Hashtable<Character, Stack<Integer>> stacks = new Hashtable<Character, Stack<Integer>>();
- Vector<SimpleBP> pairs = new Vector<SimpleBP>();
+ List<SimpleBP> pairs = new ArrayList<SimpleBP>();
int i = 0;
while (i < line.length())
{
else if (isClosingParenthesis(base))
{
- char opening = matchingOpeningParenthesis(base);
+ char opening = getMatchingOpeningParenthesis(base);
if (!stacks.containsKey(opening))
{
throw new WUSSParseException(MessageManager.formatMessage(
- "exception.mismatched_unseen_closing_char",
- new String[] { new StringBuffer(base).toString() }), i);
+ "exception.mismatched_unseen_closing_char", new String[]
+ { String.valueOf(base) }), i);
}
Stack<Integer> stack = stacks.get(opening);
{
// error whilst parsing i'th position. pass back
throw new WUSSParseException(MessageManager.formatMessage(
- "exception.mismatched_closing_char",
- new String[] { new StringBuffer(base).toString() }), i);
+ "exception.mismatched_closing_char", new String[]
+ { String.valueOf(base) }), i);
}
int temp = stack.pop();
Stack<Integer> stack = stacks.get(opening);
if (!stack.empty())
{
+ /*
+ * we have an unmatched opening bracket; report error as at
+ * i (length of input string)
+ */
throw new WUSSParseException(MessageManager.formatMessage(
- "exception.mismatched_opening_char",
- new String[] { new StringBuffer(opening).toString(),
- Integer.valueOf(stack.pop()).toString() }), i);
+ "exception.mismatched_opening_char", new String[]
+ { String.valueOf(opening), String.valueOf(stack.pop()) }),
+ i);
}
}
return pairs;
}
- public static SequenceFeature[] GetBasePairs(CharSequence line)
- throws WUSSParseException
- {
- Vector<SimpleBP> bps = GetSimpleBPs(line);
- SequenceFeature[] outPairs = new SequenceFeature[bps.size()];
- for (int p = 0; p < bps.size(); p++)
- {
- SimpleBP bp = bps.elementAt(p);
- outPairs[p] = new SequenceFeature("RNA helix", "", "", bp.getBP5(),
- bp.getBP3(), "");
- }
- return outPairs;
- }
+
- public static ArrayList<SimpleBP> GetModeleBP(CharSequence line)
- throws WUSSParseException
- {
- Vector<SimpleBP> bps = GetSimpleBPs(line);
- return new ArrayList<SimpleBP>(bps);
- }
+
/**
* Function to get the end position corresponding to a given start position
*/
/**
- * Figures out which helix each position belongs to and stores the helix
- * number in the 'featureGroup' member of a SequenceFeature Based off of RALEE
- * code ralee-helix-map.
+ * Answers true if the character is a recognised symbol for RNA secondary
+ * structure. Currently accepts a-z, A-Z, ()[]{}<>.
+ *
+ * @param c
+ * @return
+ */
+ public static boolean isRnaSecondaryStructureSymbol(char c)
+ {
+ return isOpeningParenthesis(c) || isClosingParenthesis(c);
+ }
+
+ /**
+ * Answers true if the string is a recognised symbol for RNA secondary
+ * structure. Currently accepts a-z, A-Z, ()[]{}<>.
+ *
+ * @param s
+ * @return
+ */
+ public static boolean isRnaSecondaryStructureSymbol(String s)
+ {
+ return isOpeningParenthesis(s) || isClosingParenthesis(s);
+ }
+
+ /**
+ * Translates a string to RNA secondary structure representation. Returns the
+ * string with any non-SS characters changed to spaces. Accepted characters
+ * are a-z, A-Z, and (){}[]<> brackets.
+ *
+ * @param ssString
+ * @return
+ */
+ public static String getRNASecStrucState(String ssString)
+ {
+ if (ssString == null)
+ {
+ return null;
+ }
+ StringBuilder result = new StringBuilder(ssString.length());
+ for (int i = 0; i < ssString.length(); i++)
+ {
+ char c = ssString.charAt(i);
+ result.append(isRnaSecondaryStructureSymbol(c) ? c : " ");
+ }
+ return result.toString();
+ }
+
+ /**
+ * Answers true if the base-pair is either a Watson-Crick (A:T/U, C:G) or a
+ * wobble (G:T/U) pair (either way round), else false
+ *
+ * @param first
+ * @param second
+ * @return
+ */
+ public static boolean isCanonicalOrWobblePair(char first, char second)
+ {
+ if (first > 'Z')
+ {
+ first -= 32;
+ }
+ if (second > 'Z')
+ {
+ second -= 32;
+ }
+
+ switch (first)
+ {
+ case 'A':
+ switch (second)
+ {
+ case 'T':
+ case 'U':
+ return true;
+ }
+ break;
+ case 'C':
+ switch (second)
+ {
+ case 'G':
+ return true;
+ }
+ break;
+ case 'T':
+ case 'U':
+ switch (second)
+ {
+ case 'A':
+ case 'G':
+ return true;
+ }
+ break;
+ case 'G':
+ switch (second)
+ {
+ case 'C':
+ case 'T':
+ case 'U':
+ return true;
+ }
+ break;
+ }
+ return false;
+ }
+
+ /**
+ * Answers true if the base-pair is Watson-Crick - (A:T/U or C:G, either way
+ * round), else false
+ *
+ * @param first
+ * @param second
+ * @return
+ */
+ public static boolean isCanonicalPair(char first, char second)
+ {
+
+ if (first > 'Z')
+ {
+ first -= 32;
+ }
+ if (second > 'Z')
+ {
+ second -= 32;
+ }
+
+ switch (first)
+ {
+ case 'A':
+ switch (second)
+ {
+ case 'T':
+ case 'U':
+ return true;
+ }
+ break;
+ case 'G':
+ switch (second)
+ {
+ case 'C':
+ return true;
+ }
+ break;
+ case 'C':
+ switch (second)
+ {
+ case 'G':
+ return true;
+ }
+ break;
+ case 'T':
+ case 'U':
+ switch (second)
+ {
+ case 'A':
+ return true;
+ }
+ break;
+ }
+ return false;
+ }
+
+ /**
+ * Returns the matching close pair symbol for the given opening symbol.
+ * Currently returns a-z for A-Z, or )]}> for ([{<, or the input symbol if it
+ * is not a valid opening symbol.
*
- * @param pairs
- * Array of SequenceFeature (output from Rna.GetBasePairs)
+ * @param c
+ * @return
*/
- public static void HelixMap(SequenceFeature[] pairs)
+ public static char getMatchingClosingParenthesis(char c)
+ {
+ if ('A' <= c && c <= 'Z')
+ {
+ return (char) (c + 'a' - 'A');
+ }
+ switch (c)
+ {
+ case '(':
+ return ')';
+ case '[':
+ return ']';
+ case '{':
+ return '}';
+ case '<':
+ return '>';
+ default:
+ return c;
+ }
+ }
+
+ public static SequenceFeature[] getHelixMap(CharSequence rnaAnnotation)
+ throws WUSSParseException
{
+ List<SequenceFeature> result = new ArrayList<SequenceFeature>();
int helix = 0; // Number of helices/current helix
int lastopen = 0; // Position of last open bracket reviewed
int lastclose = 9999999; // Position of last close bracket reviewed
- int i = pairs.length; // Number of pairs
- int open; // Position of an open bracket under review
- int close; // Position of a close bracket under review
- int j; // Counter
-
- Hashtable helices = new Hashtable(); // Keep track of helix number for each
- // position
+ Map<Integer, Integer> helices = new HashMap<Integer, Integer>();
+ // Keep track of helix number for each position
// Go through each base pair and assign positions a helix
- for (i = 0; i < pairs.length; i++)
+ List<SimpleBP> bps = getSimpleBPs(rnaAnnotation);
+ for (SimpleBP basePair : bps)
{
-
- open = pairs[i].getBegin();
- close = pairs[i].getEnd();
+ final int open = basePair.getBP5();
+ final int close = basePair.getBP3();
// System.out.println("open " + open + " close " + close);
// System.out.println("lastclose " + lastclose + " lastopen " + lastopen);
/*
* catch things like <<..<<..>>..<<..>>>> |
*/
- j = pairs.length - 1;
- while (j >= 0)
+ int j = bps.size();
+ while (--j >= 0)
{
- int popen = pairs[j].getBegin();
+ int popen = bps.get(j).getBP5();
// System.out.println("j " + j + " popen " + popen + " lastopen "
// +lastopen + " open " + open);
if ((popen < lastopen) && (popen > open))
{
if (helices.containsValue(popen)
- && (((Integer) helices.get(popen)) == helix))
+ && ((helices.get(popen)) == helix))
{
continue;
}
break;
}
}
-
- j -= 1;
}
// Put positions and helix information into the hashtable
helices.put(close, helix);
// Record helix as featuregroup
- pairs[i].setFeatureGroup(Integer.toString(helix));
+ result.add(new SequenceFeature("RNA helix", "", open, close,
+ String.valueOf(helix)));
lastopen = open;
lastclose = close;
-
}
+
+ return result.toArray(new SequenceFeature[result.size()]);
}
}
git://source.jalview.org / jalview.git / blobdiff