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add basic support for contextual object literal completions

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This commit is contained in:
Mohamed Hegazy 2014-09-12 12:43:34 -07:00
parent 57fa018a19
commit 85c6d34047
2 changed files with 50 additions and 31 deletions
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65
src/services/services.ts
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@ -1748,6 +1748,36 @@ module ts {
return !(declaration && declaration.flags & NodeFlags.Private && containingClass !== declaration.parent);
}
function filterContextualMembersList(contextualMemberSymbols: Symbol[], existingMembers: Declaration[]): Symbol[] {
if (!existingMembers || existingMembers.length === 0) {
return contextualMemberSymbols;
}
var existingMemberNames: Map<boolean> = {};
forEach(existingMembers, m => {
if (m.kind !== SyntaxKind.PropertyAssignment) {
// Ignore ommited expressions for missing members in the object literal
return;
}
if (position <= m.getEnd() && position >= m.getStart()) {
// If this is the current item we are editing right now, do not filter it out
return;
}
existingMemberNames[m.name.text] = true;
});
var filteredMembers: Symbol[] = [];
forEach(contextualMemberSymbols, s=> {
if (!existingMemberNames[s.name]) {
filteredMembers.push(s);
}
});
return filteredMembers;
}
synchronizeHostData();
filename = TypeScript.switchToForwardSlashes(filename);
@ -1855,34 +1885,23 @@ module ts {
// Object literal expression, look up possible property names from contextual type
if (containingObjectLiteral) {
var searchPosition = Math.min(position, TypeScript.end(containingObjectLiteral));
var path = TypeScript.ASTHelpers.getAstAtPosition(sourceUnit, searchPosition);
// Get the object literal node
var objectLiteral = mappedNode.kind === SyntaxKind.ObjectLiteral ? <ObjectLiteral>mappedNode : <ObjectLiteral>getAncestor(mappedNode, SyntaxKind.ObjectLiteral);
while (node && node.kind() !== TypeScript.SyntaxKind.ObjectLiteralExpression) {
node = node.parent;
}
if (!node || node.kind() !== TypeScript.SyntaxKind.ObjectLiteralExpression) {
// AST Path look up did not result in the same node as Fidelity Syntax Tree look up.
// Once we remove AST this will no longer be a problem.
return null;
}
Debug.assert(objectLiteral);
isMemberCompletion = true;
//// Try to get the object members form contextual typing
//var contextualMembers = compiler.getContextualMembersFromAST(node, document);
//if (contextualMembers && contextualMembers.symbols && contextualMembers.symbols.length > 0) {
// // get existing members
// var existingMembers = compiler.getVisibleMemberSymbolsFromAST(node, document);
var contextualType = typeInfoResolver.getContextualType(objectLiteral);
if (!contextualType) {
return undefined;
}
// // Add filtterd items to the completion list
// getCompletionEntriesFromSymbols({
// symbols: filterContextualMembersList(contextualMembers.symbols, existingMembers, filename, position),
// enclosingScopeSymbol: contextualMembers.enclosingScopeSymbol
// }, entries);
//}
var contextualTypeMembers = typeInfoResolver.getPropertiesOfType(contextualType);
if (contextualTypeMembers && contextualTypeMembers.length > 0) {
// Add filtterd items to the completion list
var filteredMembers = filterContextualMembersList(contextualTypeMembers, objectLiteral.properties);
getCompletionEntriesFromSymbols(filteredMembers, activeCompletionSession);
}
}
// Get scope memebers
else {