本文整理汇总了C++中gc::isNull方法的典型用法代码示例。如果您正苦于以下问题：C++ gc::isNull方法的具体用法？C++ gc::isNull怎么用？C++ gc::isNull使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类gc的用法示例。
在下文中一共展示了gc::isNull方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: error
void ErrorReporter::error(gc<SourcePos> pos, const char* format, ...)
{
// If we're just waiting for more input, don't show any errors.
if (needMoreLines_) return;
numErrors_++;
// TODO(bob): Hackish. Need to figure out if we want C-style, C++-style or
// Magpie GC strings.
char message[512];
va_list args;
va_start(args, format);
vsprintf(message, format, args);
va_end(args);
// If we don't have any position information, just show the message.
if (pos.isNull())
{
std::cerr << "Error: " << message << std::endl;
return;
}
std::cerr << "[" << pos->file()->path() << "] Error: " << message << std::endl;
if (pos->startLine() == pos->endLine())
{
// Show the line and highlight the error.
std::cerr << pos->startLine() << ": "
<< pos->file()->getLine(pos->startLine()) << std::endl;
// TODO(bob): Lame hack!
int line = pos->startLine();
while (line > 0)
{
std::cerr << " ";
line /= 10;
}
std::cerr << " ";
for (int i = 1; i < pos->endCol(); i++)
{
std::cerr << (i < pos->startCol() ? " " : "^");
}
std::cerr << std::endl;
}
else
{
// Show all of the lines.
for (int i = pos->startLine(); i <= pos->endLine(); i++)
{
// TODO(bob): Should pad line number so they all line up.
std::cerr << i << ": " << pos->file()->getLine(i) << std::endl;
}
}
}示例2: allocateSlotsForParam
void Resolver::allocateSlotsForParam(gc<Pattern> pattern)
{
// No parameter so do nothing.
if (pattern.isNull()) return;
RecordPattern* record = pattern->asRecordPattern();
if (record != NULL)
{
// Allocate each field.
for (int i = 0; i < record->fields().count(); i++)
{
makeParamSlot(record->fields()[i].value);
}
}
else
{
// If we got here, the pattern isn't a record, so it's a single slot.
makeParamSlot(pattern);
}
}示例3: destructureParam
void Resolver::destructureParam(gc<Pattern> pattern)
{
// No parameter so do nothing.
if (pattern.isNull()) return;
RecordPattern* record = pattern->asRecordPattern();
if (record != NULL)
{
// Resolve each field.
for (int i = 0; i < record->fields().count(); i++)
{
resolveParam(record->fields()[i].value);
}
}
else
{
// If we got here, the pattern isn't a record, so its a single slot.
resolveParam(pattern);
}
}示例4: compileArg
int ExprCompiler::compileArg(gc<Expr> arg)
{
// No arg so do nothing.
if (arg.isNull()) return 0;
RecordExpr* record = arg->asRecordExpr();
if (record != NULL)
{
// Compile each field.
for (int i = 0; i < record->fields().count(); i++)
{
compile(record->fields()[i].value, makeTemp());
}
return record->fields().count();
}
// If we got here, the arg isn't a record, so its a single value.
compile(arg, makeTemp());
return 1;
}示例5: compileParam
void ExprCompiler::compileParam(PatternCompiler& compiler,
gc<Pattern> param, int& slot)
{
// No parameter so do nothing.
if (param.isNull()) return;
RecordPattern* record = param->asRecordPattern();
if (record != NULL)
{
// Compile each field.
for (int i = 0; i < record->fields().count(); i++)
{
compileParamField(compiler, record->fields()[i].value, slot++);
}
}
else
{
// If we got here, the pattern isn't a record, so it's a single slot.
compileParamField(compiler, param, slot++);
}
}示例6: compile
void PatternCompiler::compile(gc<Pattern> pattern, int slot)
{
if (pattern.isNull()) return;
pattern->accept(*this, slot);
}