/**
* A recursive method that iterates the sentence given a base chunk. Used to match subject-verb
* rules.
*
* @param mistakes a list of mistakes found in the process of checking the sentence
* @param currentStates the applier will check if these states match the current token
* @param syntacticChunks an array of chunks
* @param baseChunkIndex the index of the chunk in which the process of searching for mistakes
* began
* @param currentChunkIndex the index of the current chunk
* @param sentence the complete sentence, used to get the location of the mistake counted by chars
* inside the sentence
* @return the mistakes in the parameter <code>mistakes</code> plus the mistakes found in this
* invocation, if any
*/
private List<Mistake> getMistakes(
List<Mistake> mistakes,
List<State> currentStates,
List<SyntacticChunk> syntacticChunks,
int baseChunkIndex,
int currentChunkIndex,
Sentence sentence) {
for (State state : currentStates) {
boolean chunkAndElementMatched =
this.match(
syntacticChunks.get(currentChunkIndex), state.getElement(), baseChunkIndex, sentence);
if (chunkAndElementMatched) {
if (state instanceof AcceptState) {
// Got a mistake!
Rule rule = ((AcceptState) state).getRule();
// The mistake is located between the chunks indicated by lower and upper.
// Gets the lower index by chars.
int lower =
sentence
.getSyntacticChunks()
.get(baseChunkIndex + rule.getBoundaries().getLower())
.getFirstToken();
int upper =
sentence.getSyntacticChunks().get(currentChunkIndex).getFirstToken()
+ rule.getBoundaries().getUpper();
int lowerCountedByChars = sentence.getTokens().get(lower).getSpan().getStart();
// Gets the upper index by chars.
SyntacticChunk chunkUpper = sentence.getSyntacticChunks().get(currentChunkIndex);
int upperCountedByChars =
chunkUpper.getTokens().get(chunkUpper.getTokens().size() - 1).getSpan().getEnd();
// Suggestions.
String[] suggestions =
SuggestionBuilder.getSuggestions(
sentence,
true,
baseChunkIndex,
lower,
upper,
rule.getSuggestion(),
dictionary,
Method.SUBJECT_VERB);
Mistake mistake =
new MistakeImpl(
ID_PREFIX + rule.getId(),
getPriority(rule),
rule.getMessage(),
rule.getShortMessage(),
suggestions,
lowerCountedByChars + sentence.getOffset(),
upperCountedByChars + sentence.getOffset(),
rule.getExample(),
sentence.getSentence());
mistakes.add(mistake);
} else if (currentChunkIndex + 1 < syntacticChunks.size()) {
// Keep looking: recurse.
this.getMistakes(
mistakes,
state.getNextStates(),
syntacticChunks,
baseChunkIndex,
currentChunkIndex + 1,
sentence);
}
}
}
return mistakes;
}
/**
* A recursive method that iterates the sentence given a base token group (sentence or chunk).
* Used to match general and phrase local rules.
*
* @param mistakes a list of mistakes found in the process of checking the sentence
* @param currentStates the applier will check if these states match the current token
* @param tokenGroup can be a sentence or a chunk (classes that implement the interface
* TokenGroup)
* @param baseTokenIndex the index of the token in which the process of searching for mistakes
* began
* @param currentTokenIndex the index of the current token group
* @param sentence the complete sentence, used to get the location of the mistake counted by chars
* inside the sentence
* @param dictionary a word and tag dictionary.
* @return the mistakes in the parameter <code>mistakes</code> plus the mistakes found in this
* invocation, if any
*/
private List<Mistake> getMistakes(
List<Mistake> mistakes,
List<State> currentStates,
TokenGroup tokenGroup,
int baseTokenIndex,
int currentTokenIndex,
Sentence sentence) {
Method method = Method.GENERAL;
int offset = 0;
if (tokenGroup instanceof Chunk) {
offset = ((Chunk) tokenGroup).getFirstToken();
method = Method.PHRASE_LOCAL;
}
for (State state : currentStates) {
boolean tokenAndElementMatched =
this.match(
tokenGroup.getTokens().get(currentTokenIndex),
state.getElement(),
baseTokenIndex + offset,
sentence);
if (tokenAndElementMatched) {
if (state instanceof AcceptState) {
// Got a mistake!
Rule rule = ((AcceptState) state).getRule();
// The mistake is located between the tokens indicated by lower and upper.
int lower = baseTokenIndex + rule.getBoundaries().getLower();
int upper = currentTokenIndex + rule.getBoundaries().getUpper();
lower += offset;
upper += offset;
// Pointing the mistake location using the chars in the sentence.
int lowerCountedByChars = sentence.getTokens().get(lower).getSpan().getStart();
int upperCountedByChars = sentence.getTokens().get(upper).getSpan().getEnd();
// Suggestions.
String[] suggestions = new String[0];
try {
suggestions =
SuggestionBuilder.getSuggestions(
sentence,
false,
baseTokenIndex,
lower,
upper,
rule.getSuggestion(),
dictionary,
method);
} catch (NullPointerException e) {
LOGGER.error(
"Failed to apply rule " + rule.getId() + " in: " + sentence.getSentence(), e);
}
Mistake mistake =
new MistakeImpl(
ID_PREFIX + rule.getId(),
getPriority(rule),
rule.getMessage(),
rule.getShortMessage(),
suggestions,
lowerCountedByChars + sentence.getOffset(),
upperCountedByChars + sentence.getOffset(),
rule.getExample(),
sentence.getSentence());
mistakes.add(mistake);
} else if (currentTokenIndex + 1 < tokenGroup.getTokens().size()) {
// Keep looking: recurse.
this.getMistakes(
mistakes,
state.getNextStates(),
tokenGroup,
baseTokenIndex,
currentTokenIndex + 1,
sentence);
}
}
}
return mistakes;
}
