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//===--- OptParser.td - Common Option Parsing Interfaces ------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the common interfaces used by the option parsing TableGen
// backend.
//
//===----------------------------------------------------------------------===//
// Define the kinds of options.
class OptionKind<string name, int predecence = 0> {
string Name = name;
// The kind precedence, kinds with lower precedence are matched first.
int Precedence = predecence;
}
// An option group.
def KIND_GROUP : OptionKind<"Group">;
// A flag with no values.
def KIND_FLAG : OptionKind<"Flag">;
// An option which prefixes its (single) value.
def KIND_JOINED : OptionKind<"Joined", 1>;
// An option which is followed by its value.
def KIND_SEPARATE : OptionKind<"Separate">;
// An option followed by its values, which are separated by commas.
def KIND_COMMAJOINED : OptionKind<"CommaJoined">;
// An option which is which takes multiple (separate) arguments.
def KIND_MULTIARG : OptionKind<"MultiArg">;
// An option which is either joined to its (non-empty) value, or followed by its
// value.
def KIND_JOINED_OR_SEPARATE : OptionKind<"JoinedOrSeparate">;
// An option which is both joined to its (first) value, and followed by its
// (second) value.
def KIND_JOINED_AND_SEPARATE : OptionKind<"JoinedAndSeparate">;
// Define the option flags.
class OptionFlag {}
// DriverOption - The option is a "driver" option, and should not be forwarded
// to gcc.
def DriverOption : OptionFlag;
// LinkerInput - The option is a linker input.
def LinkerInput : OptionFlag;
// NoArgumentUnused - Don't report argument unused warnings for this option; this
// is useful for options like -static or -dynamic which a user may always end up
// passing, even if the platform defaults to (or only supports) that option.
def NoArgumentUnused : OptionFlag;
// RenderAsInput - The option should not render the name when rendered as an
// input (i.e., the option is rendered as values).
def RenderAsInput : OptionFlag;
// RenderJoined - The option should be rendered joined, even if separate (only
// sensible on single value separate options).
def RenderJoined : OptionFlag;
// RenderSeparate - The option should be rendered separately, even if joined
// (only sensible on joined options).
def RenderSeparate : OptionFlag;
// Unsupported - The option is unsupported, and the driver will reject command
// lines that use it.
def Unsupported : OptionFlag;
// Define the option group class.
class OptionGroup<string name> {
string EnumName = ?; // Uses the def name if undefined.
string Name = name;
OptionGroup Group = ?;
}
// Define the option class.
class Option<string name, OptionKind kind> {
string EnumName = ?; // Uses the def name if undefined.
string Name = name;
OptionKind Kind = kind;
// Used by MultiArg option kind.
int NumArgs = 0;
string HelpText = ?;
string MetaVarName = ?;
list<OptionFlag> Flags = [];
OptionGroup Group = ?;
Option Alias = ?;
}
// Helpers for defining options.
class Flag<string name> : Option<name, KIND_FLAG>;
class Joined<string name> : Option<name, KIND_JOINED>;
class Separate<string name> : Option<name, KIND_SEPARATE>;
class CommaJoined<string name> : Option<name, KIND_COMMAJOINED>;
class MultiArg<string name, int numargs> : Option<name, KIND_MULTIARG> {
int NumArgs = numargs;
}
class JoinedOrSeparate<string name> : Option<name, KIND_JOINED_OR_SEPARATE>;
class JoinedAndSeparate<string name> : Option<name, KIND_JOINED_AND_SEPARATE>;
// Mix-ins for adding optional attributes.
class Alias<Option alias> { Option Alias = alias; }
class EnumName<string name> { string EnumName = name; }
class Flags<list<OptionFlag> flags> { list<OptionFlag> Flags = flags; }
class Group<OptionGroup group> { OptionGroup Group = group; }
class HelpText<string text> { string HelpText = text; }
class MetaVarName<string name> { string MetaVarName = name; }
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