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QmlJS: Clean up completion logic.

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To avoid '/' triggering a global completion and improve code
readability.

Change-Id: I0cdb8efb159199156a766982db8979ee987f414b
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>
This commit is contained in:
Christian Kamm
2011-10-12 13:11:20 +02:00
parent 2ecde07ca1
commit 1b036eb9e7
1 changed files with 62 additions and 64 deletions
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126
src/plugins/qmljseditor/qmljscompletionassist.cpp
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@@ -492,6 +492,7 @@ IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface
m_startPosition = assistInterface->position();
while (isIdentifierChar(m_interface->document()->characterAt(m_startPosition - 1), false, false))
--m_startPosition;
const bool onIdentifier = m_startPosition != assistInterface->position();
m_completions.clear();
@@ -512,7 +513,11 @@ IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface
const ContextPtr &context = semanticInfo.context;
const ScopeChain &scopeChain = semanticInfo.scopeChain(path);
// Search for the operator that triggered the completion.
// The completionOperator is the character under the cursor or directly before the
// identifier under cursor. Use in conjunction with onIdentifier. Examples:
// a + b<complete> -> ' '
// a +<complete> -> '+'
// a +b<complete> -> '+'
QChar completionOperator;
if (m_startPosition > 0)
completionOperator = m_interface->document()->characterAt(m_startPosition - 1);
@@ -590,15 +595,62 @@ IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface
// ### enum completion?
// completion gets triggered for / in string literals, if we don't
// return here, this will mean the snippet completion pops up for
// each / in a string literal that is not triggering file completion
return 0;
} else if (completionOperator.isSpace()
|| completionOperator.isNull()
|| isDelimiterChar(completionOperator)
|| (completionOperator == QLatin1Char('(')
&& m_startPosition != m_interface->position())) {
}
// member "a.bc<complete>" or function "foo(<complete>" completion
else if (completionOperator == QLatin1Char('.')
|| (completionOperator == QLatin1Char('(') && !onIdentifier)) {
// Look at the expression under cursor.
//QTextCursor tc = textWidget->textCursor();
QTextCursor tc(qmlInterface->document());
tc.setPosition(m_startPosition - 1);
QmlExpressionUnderCursor expressionUnderCursor;
QmlJS::AST::ExpressionNode *expression = expressionUnderCursor(tc);
if (expression != 0 && ! isLiteral(expression)) {
// Evaluate the expression under cursor.
ValueOwner *interp = context->valueOwner();
const Value *value =
interp->convertToObject(scopeChain.evaluate(expression));
//qDebug() << "type:" << interp->typeId(value);
if (value && completionOperator == QLatin1Char('.')) { // member completion
ProcessProperties processProperties(&scopeChain);
if (contextFinder.isInLhsOfBinding() && qmlScopeType) {
LhsCompletionAdder completionAdder(&m_completions, m_interface->symbolIcon(),
PropertyOrder, contextFinder.isAfterOnInLhsOfBinding());
processProperties.setEnumerateGeneratedSlots(true);
processProperties(value, &completionAdder);
} else {
CompletionAdder completionAdder(&m_completions, m_interface->symbolIcon(), SymbolOrder);
processProperties(value, &completionAdder);
}
} else if (value
&& completionOperator == QLatin1Char('(')
&& m_startPosition == m_interface->position()) {
// function completion
if (const FunctionValue *f = value->asFunctionValue()) {
QString functionName = expressionUnderCursor.text();
int indexOfDot = functionName.lastIndexOf(QLatin1Char('.'));
if (indexOfDot != -1)
functionName = functionName.mid(indexOfDot + 1);
QStringList signature;
for (int i = 0; i < f->argumentCount(); ++i)
signature.append(f->argumentName(i));
return createHintProposal(functionName.trimmed(), signature);
}
}
}
if (! m_completions.isEmpty())
return createContentProposal();
return 0;
}
// global completion
else if (onIdentifier || assistInterface->reason() == ExplicitlyInvoked) {
bool doGlobalCompletion = true;
bool doQmlKeywordCompletion = true;
@@ -698,68 +750,14 @@ IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface
if (!doJsKeywordCompletion)
addCompletions(&m_completions, qmlWordsAlsoInJs, m_interface->keywordIcon(), KeywordOrder);
}
}
else if (completionOperator == QLatin1Char('.') || completionOperator == QLatin1Char('(')) {
// Look at the expression under cursor.
//QTextCursor tc = textWidget->textCursor();
QTextCursor tc(qmlInterface->document());
tc.setPosition(m_startPosition - 1);
QmlExpressionUnderCursor expressionUnderCursor;
QmlJS::AST::ExpressionNode *expression = expressionUnderCursor(tc);
if (expression != 0 && ! isLiteral(expression)) {
// Evaluate the expression under cursor.
ValueOwner *interp = context->valueOwner();
const Value *value =
interp->convertToObject(scopeChain.evaluate(expression));
//qDebug() << "type:" << interp->typeId(value);
if (value && completionOperator == QLatin1Char('.')) { // member completion
ProcessProperties processProperties(&scopeChain);
if (contextFinder.isInLhsOfBinding() && qmlScopeType) {
LhsCompletionAdder completionAdder(&m_completions, m_interface->symbolIcon(),
PropertyOrder, contextFinder.isAfterOnInLhsOfBinding());
processProperties.setEnumerateGeneratedSlots(true);
processProperties(value, &completionAdder);
} else {
CompletionAdder completionAdder(&m_completions, m_interface->symbolIcon(), SymbolOrder);
processProperties(value, &completionAdder);
}
} else if (value
&& completionOperator == QLatin1Char('(')
&& m_startPosition == m_interface->position()) {
// function completion
if (const FunctionValue *f = value->asFunctionValue()) {
QString functionName = expressionUnderCursor.text();
int indexOfDot = functionName.lastIndexOf(QLatin1Char('.'));
if (indexOfDot != -1)
functionName = functionName.mid(indexOfDot + 1);
QStringList signature;
for (int i = 0; i < f->argumentCount(); ++i)
signature.append(f->argumentName(i));
return createHintProposal(functionName.trimmed(), signature);
}
}
}
m_completions.append(m_snippetCollector.collect());
if (! m_completions.isEmpty())
return createContentProposal();
return 0;
}
if (isQmlFile
&& (completionOperator.isNull()
|| completionOperator.isSpace()
|| isDelimiterChar(completionOperator))) {
m_completions.append(m_snippetCollector.collect());
}
if (! m_completions.isEmpty())
return createContentProposal();
return 0;
}