public void Compile_WhenEmptyParensAreIncluded_CompilesCorrectly()
{
var grammar = new PegParser().Parse("a = () b; b = 'OK';");
var compiled = PegCompiler.Compile(grammar);
var parser = CodeCompiler.Compile <string>(compiled);
Assert.That(parser.Parse("OK"), Is.EqualTo("OK"));
}
public void Parse_WhenARepetitionDelimiterFollowsTheRepeatedRule_DoesNotConsumeTheDelimiter()
{
var grammar = new PegParser().Parse("start = ' ' 'hoge'<1,,' '> ' ';");
var compiled = PegCompiler.Compile(grammar);
var parser = CodeCompiler.Compile <string>(compiled);
Assert.That(parser.Parse(" hoge "), Is.EqualTo(" hoge "));
}
public void Compile_WhenRuleNameIsAReservedWord_CompilesCorrectly(string grammarText)
{
var grammar = new PegParser().Parse(grammarText);
var compiled = PegCompiler.Compile(grammar);
var parser = CodeCompiler.Compile <string>(compiled);
Assert.That(parser.Parse("OK"), Is.EqualTo("OK"));
}
public void Parse_WhenUsingLojbhan_DoesntTimeOut(string subject)
{
var parserSource = File.ReadAllText(@"TestCases\LojbanGrammar.peg");
var grammar = new PegParser().Parse(parserSource, @"TestCases\LojbanGrammar.peg");
var compiled = PegCompiler.Compile(grammar);
var parser = CodeCompiler.Compile <object>(compiled);
Assert.That(parser.Parse(subject), Is.EqualTo(subject));
Evaluate(() =>
{
var x = parser.Parse(subject);
});
}
public void Compile_WhenMemoizedRuleIsVisitedAfterAMutation_DoesNotUseTheMemoizedValue()
{
var grammar = new PegParser().Parse(StringUtilities.JoinLines(
"@members",
"{",
" private int callCount = 0;",
"}",
"start <int>",
" = 'OK' t:test 'NO' { t }",
" / 'OK' #{ state[\"foo\"] = \"bar\"; } t:test { t }",
"test <int> -memoize = { ++callCount }"));
var compiled = PegCompiler.Compile(grammar);
var parser = CodeCompiler.Compile <int>(compiled);
Assert.That(parser.Parse("OK"), Is.EqualTo(2));
}
public void Compile_WhenMemoizedRuleIsReVisitedWithoutStateMutation_UsesTheMemoizedValue()
{
var grammar = new PegParser().Parse(StringUtilities.JoinLines(
"@members",
"{",
" private int callCount = 0;",
"}",
"start <int>",
" = 'OK' t:test 'NO' { t }",
" / 'OK' #{ } t:test { t }",
"test <int> -memoize = { ++callCount }"));
var compiled = PegCompiler.Compile(grammar);
var parser = CodeCompiler.Compile <int>(compiled);
Assert.That(parser.Parse("OK"), Is.EqualTo(1));
}
