92 lines
3.0 KiB
PHP
92 lines
3.0 KiB
PHP
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<?php
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declare(strict_types = 1);
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namespace LanguageServer;
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use PhpParser\Node;
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use LanguageServer\Index\ReadableIndex;
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use LanguageServer\Protocol\{
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Position,
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SignatureHelp,
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SignatureInformation,
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ParameterInformation
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};
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class SignatureHelpProvider
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{
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/**
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* @var DefinitionResolver
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*/
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private $definitionResolver;
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/**
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* @var ReadableIndex
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*/
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private $index;
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/**
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* @param DefinitionResolver $definitionResolver
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* @param ReadableIndex $index
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*/
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public function __construct(DefinitionResolver $definitionResolver, ReadableIndex $index)
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{
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$this->definitionResolver = $definitionResolver;
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$this->index = $index;
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}
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/**
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* Returns signature help for a specific cursor position in a document
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*
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* @param PhpDocument $doc The opened document
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* @param Position $pos The cursor position
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* @return SignatureHelp
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*/
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public function provideSignature(PhpDocument $doc, Position $pos): SignatureHelp
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{
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$node = $doc->getNodeAtPosition($pos);
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$help = new SignatureHelp;
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$help->signatures = [];
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if ($node instanceof Node\Expr\FuncCall) {
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if ($def = $this->definitionResolver->resolveReferenceNodeToDefinition($node)) {
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$signature = new SignatureInformation;
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$signature->label = str_replace('()', '', $def->fqn);
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$signature->documentation = $def->documentation;
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$signature->parameters = [];
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foreach ($def->parameters as $param) {
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$p = new ParameterInformation;
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$p->label = $param;
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$signature->parameters[] = $p;
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}
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$help->signatures[] = $signature;
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}
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} else if ($node instanceof Node\Expr\MethodCall) {
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if ($def = $this->definitionResolver->resolveReferenceNodeToDefinition($node)) {
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$signature = new SignatureInformation;
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$signature->label = str_replace('()', '', explode('->', $def->fqn)[1]);
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$signature->documentation = $def->documentation;
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$signature->parameters = [];
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foreach ($def->parameters as $param) {
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$p = new ParameterInformation;
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$p->label = $param;
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$signature->parameters[] = $p;
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}
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$help->signatures[] = $signature;
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}
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} else if ($node instanceof Node\Expr\StaticCall) {
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$signature = new SignatureInformation;
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$signature->label = str_replace('()', '', explode('::', $def->fqn)[1]);
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$signature->documentation = $def->documentation;
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$signature->parameters = [];
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foreach ($def->parameters as $param) {
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$p = new ParameterInformation;
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$p->label = $param;
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$signature->parameters[] = $p;
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}
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$help->signatures[] = $signature;
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}
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return $help;
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}
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}
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