/
ScalaLexerTest.scala
271 lines (191 loc) · 11.5 KB
/
ScalaLexerTest.scala
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package scalariform.lexer
import scalariform._
import scalariform.lexer.Tokens._
import org.scalatest.FlatSpec
import org.scalatest.matchers.ShouldMatchers
import org.scalatest.TestFailedException
import org.scalatest.TestPendingException
import java.io._
class ScalaLexerTest extends FlatSpec with ShouldMatchers {
implicit def string2TestString(s: String)(implicit forgiveErrors: Boolean = false, scalaVersion: ScalaVersion = ScalaVersions.DEFAULT) =
new TestString(s, forgiveErrors, scalaVersion)
"" producesTokens ()
"println" producesTokens (VARID)
"lazy" producesTokens (LAZY)
"println;println" producesTokens (VARID, SEMI, VARID)
"foo_+" producesTokens (VARID)
"++" producesTokens (VARID)
"*=" producesTokens (VARID)
"/" producesTokens (VARID)
"foo/bar" producesTokens (VARID, VARID, VARID)
"*/" producesTokens (VARID)
"*/+" producesTokens (VARID)
"foo bar baz" producesTokens (VARID, WS, VARID, WS, VARID)
" " producesTokens (WS)
"// comment" producesTokens (LINE_COMMENT)
"//" producesTokens (LINE_COMMENT)
"foo// comment" producesTokens (VARID, LINE_COMMENT)
"foo // comment" producesTokens (VARID, WS, LINE_COMMENT)
"""foo// comment
|bar//comment""" producesTokens (VARID, LINE_COMMENT, VARID, LINE_COMMENT)
"foo/* comment */bar" producesTokens (VARID, MULTILINE_COMMENT, VARID)
"/* bar /* baz */ var */" producesTokens (MULTILINE_COMMENT)
"/**/" producesTokens (MULTILINE_COMMENT)
"`yield`" producesTokens (VARID)
""""foobar"""" producesTokens (STRING_LITERAL)
"\"\"\"f\"o\"o\"\"\"" producesTokens (STRING_LITERAL)
""""\""""" producesTokens (STRING_LITERAL)
"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"" producesTokens (STRING_LITERAL)
"foo.bar.baz" producesTokens (VARID, DOT, VARID, DOT, VARID)
".1234" producesTokens (FLOATING_POINT_LITERAL)
".1234e2" producesTokens (FLOATING_POINT_LITERAL)
".1234e+2" producesTokens (FLOATING_POINT_LITERAL)
".1e-2" producesTokens (FLOATING_POINT_LITERAL)
".1e+2345f" producesTokens (FLOATING_POINT_LITERAL)
".1e+2345d" producesTokens (FLOATING_POINT_LITERAL)
"100" producesTokens (INTEGER_LITERAL)
"1" producesTokens (INTEGER_LITERAL)
"1L" producesTokens (INTEGER_LITERAL)
"0" producesTokens (INTEGER_LITERAL)
"0L" producesTokens (INTEGER_LITERAL)
"0x2345" producesTokens (INTEGER_LITERAL)
"0x" producesTokens (INTEGER_LITERAL)
"0x32413L" producesTokens (INTEGER_LITERAL)
"1Lfoo" producesTokens (INTEGER_LITERAL, VARID)
"0x1Lfoo" producesTokens (INTEGER_LITERAL, VARID)
"0.1234" producesTokens (FLOATING_POINT_LITERAL)
"0.1234e2" producesTokens (FLOATING_POINT_LITERAL)
"0.1234e+2" producesTokens (FLOATING_POINT_LITERAL)
"0.1e-2" producesTokens (FLOATING_POINT_LITERAL)
"0.1e+2345f" producesTokens (FLOATING_POINT_LITERAL)
"0.1e+2345d" producesTokens (FLOATING_POINT_LITERAL)
"10e2" producesTokens (FLOATING_POINT_LITERAL)
"10e+2" producesTokens (FLOATING_POINT_LITERAL)
"10e-2" producesTokens (FLOATING_POINT_LITERAL)
"10e+2345f" producesTokens (FLOATING_POINT_LITERAL)
"10e+2345d" producesTokens (FLOATING_POINT_LITERAL)
"22.`yield`" producesTokens (INTEGER_LITERAL, DOT, VARID)
"42.toString" producesTokens (INTEGER_LITERAL, DOT, VARID)
{
implicit val scalaVersion = ScalaVersions.Scala_2_9
"5.f" producesTokens (FLOATING_POINT_LITERAL)
"5.d" producesTokens (FLOATING_POINT_LITERAL)
"5." producesTokens (FLOATING_POINT_LITERAL)
}
{
implicit val scalaVersion = ScalaVersions.Scala_2_11
"5.f" producesTokens (INTEGER_LITERAL, DOT, VARID)
"5.d" producesTokens (INTEGER_LITERAL, DOT, VARID)
"5." producesTokens (INTEGER_LITERAL, DOT)
}
{
implicit val scalaVersion = ScalaVersions.Scala_2_9
""" X s"" """ producesTokens (WS, VARID, WS, VARID, STRING_LITERAL, WS)
}
{
implicit val scalaVersion = ScalaVersions.Scala_2_10
""" X s"" """ producesTokens (WS, VARID, WS, INTERPOLATION_ID, STRING_LITERAL, WS)
""" X s "$foo" """ producesTokens (WS, VARID, WS, VARID, WS, STRING_LITERAL, WS)
""" s"$foo" """ producesTokens (WS, INTERPOLATION_ID, STRING_PART, VARID, STRING_LITERAL, WS)
""" s"$$" """ producesTokens (WS, INTERPOLATION_ID, STRING_LITERAL, WS)
""" s"${foo}" """ producesTokens (WS, INTERPOLATION_ID, STRING_PART, LBRACE, VARID, RBRACE, STRING_LITERAL, WS)
""" s"${s"${x}"}" """ producesTokens (WS, INTERPOLATION_ID, STRING_PART, LBRACE, INTERPOLATION_ID, STRING_PART, LBRACE, VARID, RBRACE, STRING_LITERAL, RBRACE, STRING_LITERAL, WS)
""" s"$this" """ producesTokens (WS, INTERPOLATION_ID, STRING_PART, THIS, STRING_LITERAL, WS)
<t>s""""""</t>.text producesTokens (INTERPOLATION_ID, STRING_LITERAL)
<t>s"""""""""</t>.text producesTokens (INTERPOLATION_ID, STRING_LITERAL)
<t>s""" $foo """</t>.text producesTokens (INTERPOLATION_ID, STRING_PART, VARID, STRING_LITERAL)
}
"'f'" producesTokens (CHARACTER_LITERAL)
"""'\n'""" producesTokens (CHARACTER_LITERAL)
"""'\025'""" producesTokens (CHARACTER_LITERAL)
"'symbol" producesTokens (SYMBOL_LITERAL)
"'yield" producesTokens (SYMBOL_LITERAL)
"private val tokenTextBuffer = new StringBuilder" producesTokens (PRIVATE, WS, VAL, WS, VARID, WS, EQUALS, WS, NEW, WS, VARID)
"""println("bob")
println("foo")""" producesTokens (VARID, LPAREN, STRING_LITERAL, RPAREN, WS, VARID, LPAREN, STRING_LITERAL, RPAREN)
"\\u0061" producesTokens (VARID)
"\\uuuuuuuuuuuuuuuuuuuuuuuuu0061" producesTokens (VARID)
"\"\\u0061\"" producesTokens (STRING_LITERAL)
"\"\\u000a\"" producesTokens (STRING_LITERAL)
"<foo />" producesTokens (XML_START_OPEN, XML_NAME, XML_WHITESPACE, XML_EMPTY_CLOSE)
"<foo></foo>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<foo></foo >" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_END_OPEN, XML_NAME, XML_WHITESPACE, XML_TAG_CLOSE)
"<foo attr='val'/>" producesTokens (XML_START_OPEN, XML_NAME, XML_WHITESPACE, XML_NAME, XML_ATTR_EQ, XML_ATTR_VALUE, XML_EMPTY_CLOSE)
"<foo>bar</foo>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_PCDATA, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<foo><bar>baz</bar></foo>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_PCDATA,
XML_END_OPEN, XML_NAME, XML_TAG_CLOSE, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"10 + <foo/>" producesTokens (INTEGER_LITERAL, WS, PLUS, WS, XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE)
"<foo>bar{ baz }boz</foo>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_PCDATA, LBRACE, WS, VARID, WS, RBRACE, XML_PCDATA,
XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<foo attr={n}/>" producesTokens (XML_START_OPEN, XML_NAME, XML_WHITESPACE, XML_NAME, XML_ATTR_EQ, LBRACE, VARID, RBRACE, XML_EMPTY_CLOSE)
"10 + <foo/> + 20" producesTokens (INTEGER_LITERAL, WS, PLUS, WS, XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE, WS, PLUS, WS, INTEGER_LITERAL)
"10 + <foo>bar</foo> + 20" producesTokens (INTEGER_LITERAL, WS, PLUS, WS,
XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_PCDATA, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE,
WS, PLUS, WS, INTEGER_LITERAL)
"10 + <foo>{1 + <foo/> + 2}</foo> + 20" producesTokens (INTEGER_LITERAL, WS, PLUS, WS,
XML_START_OPEN, XML_NAME, XML_TAG_CLOSE,
LBRACE, INTEGER_LITERAL, WS, PLUS, WS,
XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE,
WS, PLUS, WS, INTEGER_LITERAL, RBRACE,
XML_END_OPEN, XML_NAME, XML_TAG_CLOSE,
WS, PLUS, WS, INTEGER_LITERAL)
"<a><b/></a>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE,
XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE,
XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<a>/</a>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_PCDATA, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<a>{}/</a>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, LBRACE, RBRACE, XML_PCDATA, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<a><!-- comment --></a>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_COMMENT, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"<![CDATA[<greeting>Hello, world!</greeting>]]>" producesTokens (XML_CDATA)
"3 + <!-- foo --> + 4" producesTokens (INTEGER_LITERAL, WS, PLUS, WS, XML_COMMENT, WS, PLUS, WS, INTEGER_LITERAL)
"<a>{{ = }}</a>" producesTokens (XML_START_OPEN, XML_NAME, XML_TAG_CLOSE, XML_PCDATA, XML_END_OPEN, XML_NAME, XML_TAG_CLOSE)
"0X1234" producesTokens (INTEGER_LITERAL)
"""<xml:unparsed>&<<>""^%@$!#</xml:unparsed>""" producesTokens (XML_UNPARSED)
"""3 + <xml:unparsed>&<<>""^%@$!#</xml:unparsed> + 3""" producesTokens (INTEGER_LITERAL, WS, PLUS, WS, XML_UNPARSED, WS, PLUS, WS,
INTEGER_LITERAL)
"""<?this is a pi foo bar = && {{ ?>""" producesTokens (XML_PROCESSING_INSTRUCTION)
"""<foo/>
<bar/>""" producesTokens (XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE, XML_PCDATA, XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE)
"""<foo/>
<bar/>""" producesTokens (XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE, XML_PCDATA, XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE)
"""<!-- -->
<bar/>""" producesTokens (XML_COMMENT, XML_PCDATA, XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE)
"for(<book/><-Nil)Nil" producesTokens (FOR, LPAREN, XML_START_OPEN, XML_NAME, XML_EMPTY_CLOSE, LARROW, VARID, RPAREN, VARID)
"\"\\u001A\"" producesTokens (STRING_LITERAL)
"\"\"\"\\u001A\"\"\"" producesTokens (STRING_LITERAL)
"foo+\\u0061+bar" producesTokens (VARID, PLUS, VARID, PLUS, VARID)
"-5f.max(2)" producesTokens (MINUS, FLOATING_POINT_LITERAL, DOT, VARID, LPAREN, INTEGER_LITERAL, RPAREN)
"-5f max(2)" producesTokens (MINUS, FLOATING_POINT_LITERAL, WS, VARID, LPAREN, INTEGER_LITERAL, RPAREN)
"-5.max(2)" producesTokens (MINUS, INTEGER_LITERAL, DOT, VARID, LPAREN, INTEGER_LITERAL, RPAREN)
"-5 max(2)" producesTokens (MINUS, INTEGER_LITERAL, WS, VARID, LPAREN, INTEGER_LITERAL, RPAREN)
"Lexer" should "throw a lexer exception" in {
evaluating { ScalaLexer.rawTokenise("\"\"\"") } should produce[ScalaLexerException]
evaluating { ScalaLexer.rawTokenise("<?") } should produce[ScalaLexerException]
evaluating { ScalaLexer.rawTokenise("<xml:unparsed>") } should produce[ScalaLexerException]
}
{
implicit val forgiveErrors = true
"\"\"\"" producesTokens (STRING_LITERAL)
"'" producesTokens (CHARACTER_LITERAL)
"\"unclosed" producesTokens (STRING_LITERAL)
"\\ufoob" producesTokens (WS)
"`unclosed" producesTokens (VARID)
"<?" producesTokens (XML_PROCESSING_INSTRUCTION)
"<xml:unparsed>" producesTokens (XML_UNPARSED)
}
class TestString(s: String, forgiveErrors: Boolean = false, scalaVersion: ScalaVersion = ScalaVersions.DEFAULT) {
def producesTokens(toks: TokenType*)() {
check(s.stripMargin, toks.toList)
}
private def check(s: String, expectedTokens: List[TokenType]) {
it should ("tokenise >>>" + s + "<<< as >>>" + expectedTokens + "<<< forgiveErrors = " + forgiveErrors + ", scalaVersion = " + scalaVersion) in {
val actualTokens: List[Token] = ScalaLexer.rawTokenise(s, forgiveErrors, scalaVersion.toString)
val actualTokenTypes = actualTokens.map(_.tokenType)
require(actualTokenTypes.last == EOF, "Last token must be EOF, but was " + actualTokens.last.tokenType)
require(actualTokenTypes.count(_ == EOF) == 1, "There must only be one EOF token")
val reconstitutedSource = actualTokens.init.map(_.rawText).mkString
require(actualTokenTypes.init == expectedTokens, "Tokens do not match. Expected " + expectedTokens + ", but was " + actualTokenTypes.init)
require(s == reconstitutedSource, "tokens do not partition text correctly: " + s + " vs " + reconstitutedSource)
}
}
}
}