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#include "../../source/compiler-core/slang-json-lexer.h"
#include "../../source/core/slang-string-escape-util.h"
#include "../../source/compiler-core/slang-json-parser.h"
#include "test-context.h"
using namespace Slang;
namespace { // anonymous
struct Element
{
JSONTokenType type;
const char* value;
};
} // anonymous
static SlangResult _lex(const char* in, DiagnosticSink* sink, List<JSONToken>& toks)
{
SourceManager* sourceManager = sink->getSourceManager();
String contents(in);
SourceFile* sourceFile = sourceManager->createSourceFileWithString(PathInfo::makeUnknown(), contents);
SourceView* sourceView = sourceManager->createSourceView(sourceFile, nullptr, SourceLoc());
JSONLexer lexer;
lexer.init(sourceView, sink);
while (lexer.peekType() != JSONTokenType::EndOfFile)
{
if (lexer.peekType() == JSONTokenType::Invalid)
{
toks.add(lexer.peekToken());
return SLANG_FAIL;
}
toks.add(lexer.peekToken());
lexer.advance();
}
toks.add(lexer.peekToken());
// If we advance from end of file we should still be at EndOfFile
SLANG_ASSERT(lexer.advance() == JSONTokenType::EndOfFile);
return SLANG_OK;
}
static SlangResult _parse(const char* in, DiagnosticSink* sink, JSONWriter& writer)
{
SourceManager* sourceManager = sink->getSourceManager();
String contents(in);
SourceFile* sourceFile = sourceManager->createSourceFileWithString(PathInfo::makeUnknown(), contents);
SourceView* sourceView = sourceManager->createSourceView(sourceFile, nullptr, SourceLoc());
JSONLexer lexer;
lexer.init(sourceView, sink);
JSONParser parser;
SLANG_RETURN_ON_FAIL(parser.parse(&lexer, sourceView, &writer, sink));
return SLANG_OK;
}
static bool _areEqual(SourceManager* sourceManager, const List<JSONToken>& toks, const Element* eles, Index elesCount)
{
if (toks.getCount() != elesCount)
{
return false;
}
SourceView* sourceView = toks.getCount() ? sourceManager->findSourceView(toks[0].loc) : nullptr;
const char*const content = sourceView ? sourceView->getContent().begin() : nullptr;
for (Index i = 0; i < toks.getCount(); ++i)
{
const JSONToken& tok = toks[i];
const auto& ele = eles[i];
if (tok.type != ele.type)
{
return false;
}
SLANG_ASSERT(sourceView->getRange().contains(tok.loc));
const char* start = content + sourceView->getRange().getOffset(tok.loc);
UnownedStringSlice lexeme(start, tok.length);
if (lexeme != ele.value)
{
return false;
}
}
return true;
}
static void jsonUnitTest()
{
SourceManager sourceManager;
sourceManager.initialize(nullptr, nullptr);
DiagnosticSink sink(&sourceManager, nullptr);
{
const char text[] = " { \"Hello\" : [ \"World\", 1, 2.0, -3.0, -435.5345435, 45e-10, 421.00e+20, 17e1] }";
const Element eles[] =
{
{JSONTokenType::LBrace, "{" },
{JSONTokenType::StringLiteral, "\"Hello\""},
{JSONTokenType::Colon, ":" },
{JSONTokenType::LBracket, "[" },
{JSONTokenType::StringLiteral, "\"World\"" },
{JSONTokenType::Comma, "," },
{JSONTokenType::IntegerLiteral, "1" },
{JSONTokenType::Comma, "," },
{JSONTokenType::FloatLiteral, "2.0" },
{JSONTokenType::Comma, "," },
{JSONTokenType::FloatLiteral, "-3.0" },
{JSONTokenType::Comma, "," },
{JSONTokenType::FloatLiteral, "-435.5345435" },
{JSONTokenType::Comma, "," },
{JSONTokenType::FloatLiteral, "45e-10" },
{JSONTokenType::Comma, "," },
{JSONTokenType::FloatLiteral, "421.00e+20" },
{JSONTokenType::Comma, "," },
{JSONTokenType::FloatLiteral, "17e1" },
{JSONTokenType::RBracket, "]" },
{JSONTokenType::RBrace, "}" },
{JSONTokenType::EndOfFile, "" },
};
List<JSONToken> toks;
SLANG_CHECK(SLANG_SUCCEEDED(_lex(text, &sink, toks)));
SLANG_CHECK(_areEqual(&sourceManager, toks, eles, SLANG_COUNT_OF(eles)));
}
{
StringEscapeHandler* handler = StringEscapeUtil::getHandler(StringEscapeUtil::Style::JSON);
{
const auto slice = UnownedStringSlice::fromLiteral("\n\r\b\f\t \"\\/ Some text...");
SLANG_CHECK(handler->isEscapingNeeded(slice));
SLANG_CHECK(!handler->isEscapingNeeded(UnownedStringSlice::fromLiteral("Hello!")));
StringBuilder escaped;
handler->appendEscaped(slice, escaped);
StringBuilder unescaped;
handler->appendUnescaped(escaped.getUnownedSlice(), unescaped);
SLANG_CHECK(unescaped == slice);
}
{
uint32_t v = 0x7f;
StringBuilder buf;
while (v < 0x10000)
{
char work[10] = "\\u";
for (Int i = 0; i < 4; ++i)
{
const uint32_t digitValue = (v >> ((3 - i) * 4)) & 0xf;
char digitC = (digitValue > 9) ? char(digitValue - 10 + 'a') : char(digitValue + '0');
work[i + 2] = digitC;
}
buf << UnownedStringSlice(work, 6);
v += v;
}
// Decode it
StringBuilder unescaped;
handler->appendUnescaped(buf.getUnownedSlice(), unescaped);
// Encode it
StringBuilder escaped;
handler->appendEscaped(unescaped.getUnownedSlice(), escaped);
SLANG_CHECK(escaped == buf);
}
}
{
const char in[] = "{ \"Hello\" : \"Json\", \"!\" : 10, \"array\" : [1, 2, 3.0] }";
{
auto style = JSONWriter::IndentationStyle::Allman;
JSONWriter writer(style);
_parse(in, &sink, writer);
JSONWriter writerCheck(style);
_parse(writer.getBuilder().getBuffer(), &sink, writerCheck);
SLANG_CHECK(writerCheck.getBuilder() == writer.getBuilder());
}
{
auto style = JSONWriter::IndentationStyle::KNR;
JSONWriter writer(style, 80);
_parse(in, &sink, writer);
JSONWriter writerCheck(style);
_parse(writer.getBuilder().getBuffer(), &sink, writerCheck);
SLANG_CHECK(writerCheck.getBuilder() == writer.getBuilder());
}
}
}
SLANG_UNIT_TEST("JSON", jsonUnitTest);
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