forked from OSchip/llvm-project
91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
//===- ParserState.h - MLIR ParserState -------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef MLIR_LIB_PARSER_PARSERSTATE_H
|
|
#define MLIR_LIB_PARSER_PARSERSTATE_H
|
|
|
|
#include "Lexer.h"
|
|
#include "mlir/IR/Attributes.h"
|
|
#include "llvm/ADT/StringMap.h"
|
|
|
|
namespace mlir {
|
|
namespace detail {
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SymbolState
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// This class contains record of any parsed top-level symbols.
|
|
struct SymbolState {
|
|
// A map from attribute alias identifier to Attribute.
|
|
llvm::StringMap<Attribute> attributeAliasDefinitions;
|
|
|
|
// A map from type alias identifier to Type.
|
|
llvm::StringMap<Type> typeAliasDefinitions;
|
|
|
|
/// A set of locations into the main parser memory buffer for each of the
|
|
/// active nested parsers. Given that some nested parsers, i.e. custom dialect
|
|
/// parsers, operate on a temporary memory buffer, this provides an anchor
|
|
/// point for emitting diagnostics.
|
|
SmallVector<llvm::SMLoc, 1> nestedParserLocs;
|
|
|
|
/// The top-level lexer that contains the original memory buffer provided by
|
|
/// the user. This is used by nested parsers to get a properly encoded source
|
|
/// location.
|
|
Lexer *topLevelLexer = nullptr;
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ParserState
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// This class refers to all of the state maintained globally by the parser,
|
|
/// such as the current lexer position etc.
|
|
struct ParserState {
|
|
ParserState(const llvm::SourceMgr &sourceMgr, MLIRContext *ctx,
|
|
SymbolState &symbols, AsmParserState *asmState)
|
|
: context(ctx), lex(sourceMgr, ctx), curToken(lex.lexToken()),
|
|
symbols(symbols), parserDepth(symbols.nestedParserLocs.size()),
|
|
asmState(asmState) {
|
|
// Set the top level lexer for the symbol state if one doesn't exist.
|
|
if (!symbols.topLevelLexer)
|
|
symbols.topLevelLexer = &lex;
|
|
}
|
|
~ParserState() {
|
|
// Reset the top level lexer if it refers the lexer in our state.
|
|
if (symbols.topLevelLexer == &lex)
|
|
symbols.topLevelLexer = nullptr;
|
|
}
|
|
ParserState(const ParserState &) = delete;
|
|
void operator=(const ParserState &) = delete;
|
|
|
|
/// The context we're parsing into.
|
|
MLIRContext *const context;
|
|
|
|
/// The lexer for the source file we're parsing.
|
|
Lexer lex;
|
|
|
|
/// This is the next token that hasn't been consumed yet.
|
|
Token curToken;
|
|
|
|
/// The current state for symbol parsing.
|
|
SymbolState &symbols;
|
|
|
|
/// The depth of this parser in the nested parsing stack.
|
|
size_t parserDepth;
|
|
|
|
/// An optional pointer to a struct containing high level parser state to be
|
|
/// populated during parsing.
|
|
AsmParserState *asmState;
|
|
};
|
|
|
|
} // end namespace detail
|
|
} // end namespace mlir
|
|
|
|
#endif // MLIR_LIB_PARSER_PARSERSTATE_H
|