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Allow (set_option SwitchOption, true).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91997 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mikhail Glushenkov 2009-12-23 12:49:30 +00:00
parent 76d2f9a4db
commit e0b6570d24
3 changed files with 45 additions and 20 deletions
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9
test/LLVMC/OptionPreprocessor.td
View File

@ -1,4 +1,4 @@
// Test for the OptionPreprocessor and any*.
// Test for the OptionPreprocessor and related functionality.
// RUN: tblgen -I %p/../../include --gen-llvmc %s -o %t
// RUN: FileCheck -input-file %t %s
// RUN: %compile_cxx -fexceptions -x c++ %t
@ -26,13 +26,18 @@ def Preprocess : OptionPreprocessor<
(unset_option "foo_p"), (unset_option "foo_l")],
// CHECK: W2
// CHECK: foo = true;
// CHECK: bar = true;
// CHECK: baz = false;
// CHECK: foo_p = "asdf";
// CHECK: foo_l.clear();
// CHECK: foo_l.push_back("qwert");
// CHECK: foo_l.push_back("yuiop");
// CHECK: foo_l.push_back("asdf");
(and (switch_on ["foo", "bar"]), (any_empty ["foo_p", "bar_p"])),
[(warning "W2"), (set_option "foo"), (set_option "foo_p", "asdf"),
[(warning "W2"), (set_option "foo"),
(set_option "bar", true),
(set_option "baz", false),
(set_option "foo_p", "asdf"),
(set_option "foo_l", ["qwert", "yuiop", "asdf"])],
// CHECK: W3
// CHECK: foo = true;

15
tools/llvmc/doc/LLVMC-Reference.rst
View File

@ -690,13 +690,16 @@ specified, ``-O2`` is enabled.
``OptionPreprocessor`` is basically a single big ``case`` expression, which is
evaluated only once right after the plugin is loaded. The only allowed actions
in ``OptionPreprocessor`` are ``error``, ``warning`` and two special actions:
in ``OptionPreprocessor`` are ``error``, ``warning``, and two special actions:
``unset_option`` and ``set_option``. As their names suggest, they can be used to
set or unset a given option. To set a parameter option with ``set_option``, use
the two-argument form: ``(set_option "parameter", "value")``. For convenience,
``set_option`` and ``unset_option`` also work on lists (that is, instead of
``[(unset_option "A"), (unset_option "B")]`` you can use ``(unset_option ["A",
"B"])``).
set or unset a given option. To set an option with ``set_option``, use the
two-argument form: ``(set_option "parameter", VALUE)``. Here, ``VALUE`` can be
either a string, a string list, or a boolean constant.
For convenience, ``set_option`` and ``unset_option`` also work on lists. That
is, instead of ``[(unset_option "A"), (unset_option "B")]`` you can use
``(unset_option ["A", "B"])``. Obviously, ``(set_option ["A", "B"])`` is valid
only if both ``A`` and ``B`` are switches.
More advanced topics

41
utils/TableGen/LLVMCConfigurationEmitter.cpp
View File

@ -17,6 +17,7 @@
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringSet.h"
#include <algorithm>
#include <cassert>
#include <functional>
@ -89,6 +90,17 @@ const std::string GetOperatorName(const DagInit& D) {
return D.getOperator()->getAsString();
}
/// CheckBooleanConstant - Check that the provided value is a boolean constant.
void CheckBooleanConstant(const Init* I) {
const DefInit& val = dynamic_cast<const DefInit&>(*I);
const std::string& str = val.getAsString();
if (str != "true" && str != "false") {
throw "Incorrect boolean value: '" + str +
"': must be either 'true' or 'false'";
}
}
// checkNumberOfArguments - Ensure that the number of args in d is
// greater than or equal to min_arguments, otherwise throw an exception.
void checkNumberOfArguments (const DagInit& d, unsigned minArgs) {
@ -2309,8 +2321,8 @@ class EmitPreprocessOptionsCallback :
const OptionDescriptions& OptDescs_;
void onListOrDag(HandlerImpl h,
const DagInit& d, unsigned IndentLevel, raw_ostream& O) const
void onListOrDag(const DagInit& d, HandlerImpl h,
unsigned IndentLevel, raw_ostream& O) const
{
checkNumberOfArguments(d, 1);
const Init* I = d.getArg(0);
@ -2350,12 +2362,12 @@ class EmitPreprocessOptionsCallback :
void onUnsetOption(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const
{
this->onListOrDag(&EmitPreprocessOptionsCallback::onUnsetOptionImpl,
d, IndentLevel, O);
this->onListOrDag(d, &EmitPreprocessOptionsCallback::onUnsetOptionImpl,
IndentLevel, O);
}
void onSetListOrParameter(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const {
void onSetOptionImpl(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const {
checkNumberOfArguments(d, 2);
const std::string& OptName = InitPtrToString(d.getArg(0));
const Init* Value = d.getArg(1);
@ -2371,13 +2383,18 @@ class EmitPreprocessOptionsCallback :
<< InitPtrToString(*B) << "\");\n";
}
}
else if (OptDesc.isSwitch()) {
CheckBooleanConstant(Value);
O.indent(IndentLevel) << OptDesc.GenVariableName()
<< " = " << Value->getAsString() << ";\n";
}
else if (OptDesc.isParameter()) {
const std::string& Str = InitPtrToString(Value);
O.indent(IndentLevel) << OptDesc.GenVariableName()
<< " = \"" << Str << "\";\n";
}
else {
throw "set_option: -" + OptName + ": is not a list or parameter option!";
throw "Can't apply 'set_option' to alias option -" + OptName + " !";
}
}
@ -2397,15 +2414,15 @@ class EmitPreprocessOptionsCallback :
{
checkNumberOfArguments(d, 1);
// Two arguments: (set_option "parameter", VALUE), where VALUE is either a
// string or a string list.
// Two arguments: (set_option "parameter", VALUE), where VALUE can be a
// boolean, a string or a string list.
if (d.getNumArgs() > 1)
this->onSetListOrParameter(d, IndentLevel, O);
this->onSetOptionImpl(d, IndentLevel, O);
// One argument: (set_option "switch")
// or (set_option ["switch1", "switch2", ...])
else
this->onListOrDag(&EmitPreprocessOptionsCallback::onSetSwitch,
d, IndentLevel, O);
this->onListOrDag(d, &EmitPreprocessOptionsCallback::onSetSwitch,
IndentLevel, O);
}
public: