<?php
/**
 * Tests the conversion of PHP native context sensitive keywords to T_STRING.
 *
 * @author    Jaroslav Hanslík <kukulich@kukulich.cz>
 * @copyright 2020 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Tests\Core\Tokenizer\PHP;

use PHP_CodeSniffer\Tests\Core\Tokenizer\AbstractTokenizerTestCase;
use PHP_CodeSniffer\Util\Tokens;

final class ContextSensitiveKeywordsTest extends AbstractTokenizerTestCase
{


    /**
     * Test that context sensitive keyword is tokenized as string when it should be string.
     *
     * @param string $testMarker The comment which prefaces the target token in the test file.
     *
     * @dataProvider dataStrings
     * @covers       PHP_CodeSniffer\Tokenizers\PHP::tokenize
     *
     * @return void
     */
    public function testStrings($testMarker)
    {
        $tokens     = $this->phpcsFile->getTokens();
        $target     = $this->getTargetToken($testMarker, (Tokens::$contextSensitiveKeywords + [T_STRING]));
        $tokenArray = $tokens[$target];

        $this->assertSame(T_STRING, $tokenArray['code'], 'Token tokenized as '.$tokenArray['type'].', not T_STRING (code)');
        $this->assertSame('T_STRING', $tokenArray['type'], 'Token tokenized as '.$tokenArray['type'].', not T_STRING (type)');

    }//end testStrings()


    /**
     * Data provider.
     *
     * @see testStrings()
     *
     * @return array<string, array<string>>
     */
    public static function dataStrings()
    {
        return [
            'constant declaration: abstract'                  => ['/* testAbstract */'],
            'constant declaration: array'                     => ['/* testArray */'],
            'constant declaration: as'                        => ['/* testAs */'],
            'constant declaration: break'                     => ['/* testBreak */'],
            'constant declaration: callable'                  => ['/* testCallable */'],
            'constant declaration: case'                      => ['/* testCase */'],
            'constant declaration: catch'                     => ['/* testCatch */'],
            'constant declaration: class'                     => ['/* testClass */'],
            'constant declaration: clone'                     => ['/* testClone */'],
            'constant declaration: const'                     => ['/* testConst */'],
            'constant declaration: continue'                  => ['/* testContinue */'],
            'constant declaration: declare'                   => ['/* testDeclare */'],
            'constant declaration: default'                   => ['/* testDefault */'],
            'constant declaration: do'                        => ['/* testDo */'],
            'constant declaration: echo'                      => ['/* testEcho */'],
            'constant declaration: else'                      => ['/* testElse */'],
            'constant declaration: elseif'                    => ['/* testElseIf */'],
            'constant declaration: empty'                     => ['/* testEmpty */'],
            'constant declaration: enddeclare'                => ['/* testEndDeclare */'],
            'constant declaration: endfor'                    => ['/* testEndFor */'],
            'constant declaration: endforeach'                => ['/* testEndForeach */'],
            'constant declaration: endif'                     => ['/* testEndIf */'],
            'constant declaration: endswitch'                 => ['/* testEndSwitch */'],
            'constant declaration: endwhile'                  => ['/* testEndWhile */'],
            'constant declaration: enum'                      => ['/* testEnum */'],
            'constant declaration: eval'                      => ['/* testEval */'],
            'constant declaration: exit'                      => ['/* testExit */'],
            'constant declaration: extends'                   => ['/* testExtends */'],
            'constant declaration: final'                     => ['/* testFinal */'],
            'constant declaration: finally'                   => ['/* testFinally */'],
            'constant declaration: fn'                        => ['/* testFn */'],
            'constant declaration: for'                       => ['/* testFor */'],
            'constant declaration: foreach'                   => ['/* testForeach */'],
            'constant declaration: function'                  => ['/* testFunction */'],
            'constant declaration: global'                    => ['/* testGlobal */'],
            'constant declaration: goto'                      => ['/* testGoto */'],
            'constant declaration: if'                        => ['/* testIf */'],
            'constant declaration: implements'                => ['/* testImplements */'],
            'constant declaration: include'                   => ['/* testInclude */'],
            'constant declaration: include_once'              => ['/* testIncludeOnce */'],
            'constant declaration: instanceof'                => ['/* testInstanceOf */'],
            'constant declaration: insteadof'                 => ['/* testInsteadOf */'],
            'constant declaration: interface'                 => ['/* testInterface */'],
            'constant declaration: isset'                     => ['/* testIsset */'],
            'constant declaration: list'                      => ['/* testList */'],
            'constant declaration: match'                     => ['/* testMatch */'],
            'constant declaration: namespace'                 => ['/* testNamespace */'],
            'constant declaration: new'                       => ['/* testNew */'],
            'constant declaration: print'                     => ['/* testPrint */'],
            'constant declaration: private'                   => ['/* testPrivate */'],
            'constant declaration: protected'                 => ['/* testProtected */'],
            'constant declaration: public'                    => ['/* testPublic */'],
            'constant declaration: readonly'                  => ['/* testReadonly */'],
            'constant declaration: require'                   => ['/* testRequire */'],
            'constant declaration: require_once'              => ['/* testRequireOnce */'],
            'constant declaration: return'                    => ['/* testReturn */'],
            'constant declaration: static'                    => ['/* testStatic */'],
            'constant declaration: switch'                    => ['/* testSwitch */'],
            'constant declaration: throws'                    => ['/* testThrows */'],
            'constant declaration: trait'                     => ['/* testTrait */'],
            'constant declaration: try'                       => ['/* testTry */'],
            'constant declaration: unset'                     => ['/* testUnset */'],
            'constant declaration: use'                       => ['/* testUse */'],
            'constant declaration: var'                       => ['/* testVar */'],
            'constant declaration: while'                     => ['/* testWhile */'],
            'constant declaration: yield'                     => ['/* testYield */'],
            'constant declaration: yield_from'                => ['/* testYieldFrom */'],
            'constant declaration: and'                       => ['/* testAnd */'],
            'constant declaration: or'                        => ['/* testOr */'],
            'constant declaration: xor'                       => ['/* testXor */'],

            'constant declaration: array in type'             => ['/* testArrayIsTstringInConstType */'],
            'constant declaration: array, name after type'    => ['/* testArrayNameForTypedConstant */'],
            'constant declaration: static, name after type'   => ['/* testStaticIsNameForTypedConstant */'],
            'constant declaration: private, name after type'  => ['/* testPrivateNameForUnionTypedConstant */'],
            'constant declaration: final, name after type'    => ['/* testFinalNameForIntersectionTypedConstant */'],

            'namespace declaration: class'                    => ['/* testKeywordAfterNamespaceShouldBeString */'],
            'namespace declaration (partial): my'             => ['/* testNamespaceNameIsString1 */'],
            'namespace declaration (partial): class'          => ['/* testNamespaceNameIsString2 */'],
            'namespace declaration (partial): foreach'        => ['/* testNamespaceNameIsString3 */'],

            'function declaration: eval'                      => ['/* testKeywordAfterFunctionShouldBeString */'],
            'function declaration with return by ref: switch' => ['/* testKeywordAfterFunctionByRefShouldBeString */'],
            'function declaration with return by ref: static' => ['/* testKeywordStaticAfterFunctionByRefShouldBeString */'],

            'function call: static'                           => ['/* testKeywordAsFunctionCallNameShouldBeStringStatic */'],
            'method call: static'                             => ['/* testKeywordAsMethodCallNameShouldBeStringStatic */'],
            'method call: static with dnf look a like param'  => ['/* testKeywordAsFunctionCallNameShouldBeStringStaticDNFLookaLike */'],
        ];

    }//end dataStrings()


    /**
     * Test that context sensitive keyword is tokenized as keyword when it should be keyword.
     *
     * @param string $testMarker        The comment which prefaces the target token in the test file.
     * @param string $expectedTokenType The expected token type.
     *
     * @dataProvider dataKeywords
     * @covers       PHP_CodeSniffer\Tokenizers\PHP::tokenize
     *
     * @return void
     */
    public function testKeywords($testMarker, $expectedTokenType)
    {
        $tokens     = $this->phpcsFile->getTokens();
        $target     = $this->getTargetToken($testMarker, (Tokens::$contextSensitiveKeywords + [T_ANON_CLASS, T_MATCH_DEFAULT, T_STRING]));
        $tokenArray = $tokens[$target];

        $this->assertSame(
            constant($expectedTokenType),
            $tokenArray['code'],
            'Token tokenized as '.$tokenArray['type'].', not '.$expectedTokenType.' (code)'
        );
        $this->assertSame(
            $expectedTokenType,
            $tokenArray['type'],
            'Token tokenized as '.$tokenArray['type'].', not '.$expectedTokenType.' (type)'
        );

    }//end testKeywords()


    /**
     * Data provider.
     *
     * @see testKeywords()
     *
     * @return array
     */
    public static function dataKeywords()
    {
        return [
            'namespace: declaration'                 => [
                'testMarker'        => '/* testNamespaceIsKeyword */',
                'expectedTokenType' => 'T_NAMESPACE',
            ],
            'array: default value in const decl'     => [
                'testMarker'        => '/* testArrayIsKeywordInConstDefault */',
                'expectedTokenType' => 'T_ARRAY',
            ],
            'static: type in constant declaration'   => [
                'testMarker'        => '/* testStaticIsKeywordAsConstType */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'static: value in constant declaration'  => [
                'testMarker'        => '/* testStaticIsKeywordAsConstDefault */',
                'expectedTokenType' => 'T_STATIC',
            ],

            'abstract: class declaration'            => [
                'testMarker'        => '/* testAbstractIsKeyword */',
                'expectedTokenType' => 'T_ABSTRACT',
            ],
            'class: declaration'                     => [
                'testMarker'        => '/* testClassIsKeyword */',
                'expectedTokenType' => 'T_CLASS',
            ],
            'extends: in class declaration'          => [
                'testMarker'        => '/* testExtendsIsKeyword */',
                'expectedTokenType' => 'T_EXTENDS',
            ],
            'implements: in class declaration'       => [
                'testMarker'        => '/* testImplementsIsKeyword */',
                'expectedTokenType' => 'T_IMPLEMENTS',
            ],
            'use: in trait import'                   => [
                'testMarker'        => '/* testUseIsKeyword */',
                'expectedTokenType' => 'T_USE',
            ],
            'insteadof: in trait import'             => [
                'testMarker'        => '/* testInsteadOfIsKeyword */',
                'expectedTokenType' => 'T_INSTEADOF',
            ],
            'as: in trait import'                    => [
                'testMarker'        => '/* testAsIsKeyword */',
                'expectedTokenType' => 'T_AS',
            ],
            'const: declaration'                     => [
                'testMarker'        => '/* testConstIsKeyword */',
                'expectedTokenType' => 'T_CONST',
            ],
            'private: property declaration'          => [
                'testMarker'        => '/* testPrivateIsKeyword */',
                'expectedTokenType' => 'T_PRIVATE',
            ],
            'protected: property declaration'        => [
                'testMarker'        => '/* testProtectedIsKeyword */',
                'expectedTokenType' => 'T_PROTECTED',
            ],
            'public: property declaration'           => [
                'testMarker'        => '/* testPublicIsKeyword */',
                'expectedTokenType' => 'T_PUBLIC',
            ],
            'var: property declaration'              => [
                'testMarker'        => '/* testVarIsKeyword */',
                'expectedTokenType' => 'T_VAR',
            ],
            'static: property declaration'           => [
                'testMarker'        => '/* testStaticIsKeyword */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'readonly: property declaration'         => [
                'testMarker'        => '/* testReadonlyIsKeywordForProperty */',
                'expectedTokenType' => 'T_READONLY',
            ],
            'final: function declaration'            => [
                'testMarker'        => '/* testFinalIsKeyword */',
                'expectedTokenType' => 'T_FINAL',
            ],
            'function: declaration'                  => [
                'testMarker'        => '/* testFunctionIsKeyword */',
                'expectedTokenType' => 'T_FUNCTION',
            ],
            'callable: param type declaration'       => [
                'testMarker'        => '/* testCallableIsKeyword */',
                'expectedTokenType' => 'T_CALLABLE',
            ],
            'readonly: anon class declaration'       => [
                'testMarker'        => '/* testReadonlyIsKeywordForAnonClass */',
                'expectedTokenType' => 'T_READONLY',
            ],
            'return: statement'                      => [
                'testMarker'        => '/* testReturnIsKeyword */',
                'expectedTokenType' => 'T_RETURN',
            ],

            'interface: declaration'                 => [
                'testMarker'        => '/* testInterfaceIsKeyword */',
                'expectedTokenType' => 'T_INTERFACE',
            ],
            'trait: declaration'                     => [
                'testMarker'        => '/* testTraitIsKeyword */',
                'expectedTokenType' => 'T_TRAIT',
            ],
            'enum: declaration'                      => [
                'testMarker'        => '/* testEnumIsKeyword */',
                'expectedTokenType' => 'T_ENUM',
            ],

            'new: named instantiation'               => [
                'testMarker'        => '/* testNewIsKeyword */',
                'expectedTokenType' => 'T_NEW',
            ],
            'instanceof: comparison'                 => [
                'testMarker'        => '/* testInstanceOfIsKeyword */',
                'expectedTokenType' => 'T_INSTANCEOF',
            ],
            'clone'                                  => [
                'testMarker'        => '/* testCloneIsKeyword */',
                'expectedTokenType' => 'T_CLONE',
            ],

            'if'                                     => [
                'testMarker'        => '/* testIfIsKeyword */',
                'expectedTokenType' => 'T_IF',
            ],
            'empty'                                  => [
                'testMarker'        => '/* testEmptyIsKeyword */',
                'expectedTokenType' => 'T_EMPTY',
            ],
            'elseif'                                 => [
                'testMarker'        => '/* testElseIfIsKeyword */',
                'expectedTokenType' => 'T_ELSEIF',
            ],
            'else'                                   => [
                'testMarker'        => '/* testElseIsKeyword */',
                'expectedTokenType' => 'T_ELSE',
            ],
            'endif'                                  => [
                'testMarker'        => '/* testEndIfIsKeyword */',
                'expectedTokenType' => 'T_ENDIF',
            ],

            'for'                                    => [
                'testMarker'        => '/* testForIsKeyword */',
                'expectedTokenType' => 'T_FOR',
            ],
            'endfor'                                 => [
                'testMarker'        => '/* testEndForIsKeyword */',
                'expectedTokenType' => 'T_ENDFOR',
            ],

            'foreach'                                => [
                'testMarker'        => '/* testForeachIsKeyword */',
                'expectedTokenType' => 'T_FOREACH',
            ],
            'endforeach'                             => [
                'testMarker'        => '/* testEndForeachIsKeyword */',
                'expectedTokenType' => 'T_ENDFOREACH',
            ],

            'switch'                                 => [
                'testMarker'        => '/* testSwitchIsKeyword */',
                'expectedTokenType' => 'T_SWITCH',
            ],
            'case: in switch'                        => [
                'testMarker'        => '/* testCaseIsKeyword */',
                'expectedTokenType' => 'T_CASE',
            ],
            'default: in switch'                     => [
                'testMarker'        => '/* testDefaultIsKeyword */',
                'expectedTokenType' => 'T_DEFAULT',
            ],
            'endswitch'                              => [
                'testMarker'        => '/* testEndSwitchIsKeyword */',
                'expectedTokenType' => 'T_ENDSWITCH',
            ],
            'break: in switch'                       => [
                'testMarker'        => '/* testBreakIsKeyword */',
                'expectedTokenType' => 'T_BREAK',
            ],
            'continue: in switch'                    => [
                'testMarker'        => '/* testContinueIsKeyword */',
                'expectedTokenType' => 'T_CONTINUE',
            ],

            'do'                                     => [
                'testMarker'        => '/* testDoIsKeyword */',
                'expectedTokenType' => 'T_DO',
            ],
            'while'                                  => [
                'testMarker'        => '/* testWhileIsKeyword */',
                'expectedTokenType' => 'T_WHILE',
            ],
            'endwhile'                               => [
                'testMarker'        => '/* testEndWhileIsKeyword */',
                'expectedTokenType' => 'T_ENDWHILE',
            ],

            'try'                                    => [
                'testMarker'        => '/* testTryIsKeyword */',
                'expectedTokenType' => 'T_TRY',
            ],
            'throw: statement'                       => [
                'testMarker'        => '/* testThrowIsKeyword */',
                'expectedTokenType' => 'T_THROW',
            ],
            'catch'                                  => [
                'testMarker'        => '/* testCatchIsKeyword */',
                'expectedTokenType' => 'T_CATCH',
            ],
            'finally'                                => [
                'testMarker'        => '/* testFinallyIsKeyword */',
                'expectedTokenType' => 'T_FINALLY',
            ],

            'global'                                 => [
                'testMarker'        => '/* testGlobalIsKeyword */',
                'expectedTokenType' => 'T_GLOBAL',
            ],
            'echo'                                   => [
                'testMarker'        => '/* testEchoIsKeyword */',
                'expectedTokenType' => 'T_ECHO',
            ],
            'print: statement'                       => [
                'testMarker'        => '/* testPrintIsKeyword */',
                'expectedTokenType' => 'T_PRINT',
            ],
            'die: statement'                         => [
                'testMarker'        => '/* testDieIsKeyword */',
                'expectedTokenType' => 'T_EXIT',
            ],
            'eval'                                   => [
                'testMarker'        => '/* testEvalIsKeyword */',
                'expectedTokenType' => 'T_EVAL',
            ],
            'exit: statement'                        => [
                'testMarker'        => '/* testExitIsKeyword */',
                'expectedTokenType' => 'T_EXIT',
            ],
            'isset'                                  => [
                'testMarker'        => '/* testIssetIsKeyword */',
                'expectedTokenType' => 'T_ISSET',
            ],
            'unset'                                  => [
                'testMarker'        => '/* testUnsetIsKeyword */',
                'expectedTokenType' => 'T_UNSET',
            ],

            'include'                                => [
                'testMarker'        => '/* testIncludeIsKeyword */',
                'expectedTokenType' => 'T_INCLUDE',
            ],
            'include_once'                           => [
                'testMarker'        => '/* testIncludeOnceIsKeyword */',
                'expectedTokenType' => 'T_INCLUDE_ONCE',
            ],
            'require'                                => [
                'testMarker'        => '/* testRequireIsKeyword */',
                'expectedTokenType' => 'T_REQUIRE',
            ],
            'require_once'                           => [
                'testMarker'        => '/* testRequireOnceIsKeyword */',
                'expectedTokenType' => 'T_REQUIRE_ONCE',
            ],

            'list'                                   => [
                'testMarker'        => '/* testListIsKeyword */',
                'expectedTokenType' => 'T_LIST',
            ],
            'goto'                                   => [
                'testMarker'        => '/* testGotoIsKeyword */',
                'expectedTokenType' => 'T_GOTO',
            ],
            'match'                                  => [
                'testMarker'        => '/* testMatchIsKeyword */',
                'expectedTokenType' => 'T_MATCH',
            ],
            'default: in match expression'           => [
                'testMarker'        => '/* testMatchDefaultIsKeyword */',
                'expectedTokenType' => 'T_MATCH_DEFAULT',
            ],
            'fn'                                     => [
                'testMarker'        => '/* testFnIsKeyword */',
                'expectedTokenType' => 'T_FN',
            ],

            'yield'                                  => [
                'testMarker'        => '/* testYieldIsKeyword */',
                'expectedTokenType' => 'T_YIELD',
            ],
            'yield from'                             => [
                'testMarker'        => '/* testYieldFromIsKeyword */',
                'expectedTokenType' => 'T_YIELD_FROM',
            ],

            'declare'                                => [
                'testMarker'        => '/* testDeclareIsKeyword */',
                'expectedTokenType' => 'T_DECLARE',
            ],
            'enddeclare'                             => [
                'testMarker'        => '/* testEndDeclareIsKeyword */',
                'expectedTokenType' => 'T_ENDDECLARE',
            ],

            'and: in if'                             => [
                'testMarker'        => '/* testAndIsKeyword */',
                'expectedTokenType' => 'T_LOGICAL_AND',
            ],
            'or: in if'                              => [
                'testMarker'        => '/* testOrIsKeyword */',
                'expectedTokenType' => 'T_LOGICAL_OR',
            ],
            'xor: in if'                             => [
                'testMarker'        => '/* testXorIsKeyword */',
                'expectedTokenType' => 'T_LOGICAL_XOR',
            ],

            'class: anon class declaration'          => [
                'testMarker'        => '/* testAnonymousClassIsKeyword */',
                'expectedTokenType' => 'T_ANON_CLASS',
            ],
            'extends: anon class declaration'        => [
                'testMarker'        => '/* testExtendsInAnonymousClassIsKeyword */',
                'expectedTokenType' => 'T_EXTENDS',
            ],
            'implements: anon class declaration'     => [
                'testMarker'        => '/* testImplementsInAnonymousClassIsKeyword */',
                'expectedTokenType' => 'T_IMPLEMENTS',
            ],
            'static: class instantiation'            => [
                'testMarker'        => '/* testClassInstantiationStaticIsKeyword */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'namespace: operator'                    => [
                'testMarker'        => '/* testNamespaceInNameIsKeyword */',
                'expectedTokenType' => 'T_NAMESPACE',
            ],

            'static: closure declaration'            => [
                'testMarker'        => '/* testStaticIsKeywordBeforeClosure */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'static: parameter type (illegal)'       => [
                'testMarker'        => '/* testStaticIsKeywordWhenParamType */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'static: arrow function declaration'     => [
                'testMarker'        => '/* testStaticIsKeywordBeforeArrow */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'static: return type for arrow function' => [
                'testMarker'        => '/* testStaticIsKeywordWhenReturnType */',
                'expectedTokenType' => 'T_STATIC',
            ],
            'static: property modifier before DNF'   => [
                'testMarker'        => '/* testStaticIsKeywordPropertyModifierBeforeDNF */',
                'expectedTokenType' => 'T_STATIC',
            ],
        ];

    }//end dataKeywords()


}//end class