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https://github.com/carbon-language/carbon-lang.git
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Jon Meow
56dc4ae375
Note that ptr.h also includes an enable_if change, to help avoid https://bugs.llvm.org/show_bug.cgi?id=51881
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef EXECUTABLE_SEMANTICS_SYNTAX_DRIVER_H_
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#define EXECUTABLE_SEMANTICS_SYNTAX_DRIVER_H_
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#include <variant>
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#include "executable_semantics/ast/ast.h"
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#include "executable_semantics/syntax/parser.h" // from parser.ypp
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namespace Carbon {
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// The state and functionality that is threaded "globally" through the
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// lexing/parsing process.
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class ParseAndLexContext {
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public:
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// Creates an instance analyzing the given input file.
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ParseAndLexContext(Nonnull<const std::string*> input_file_name)
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: input_file_name(input_file_name) {}
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// Writes a syntax error diagnostic containing message to standard error.
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auto PrintDiagnostic(const std::string& message) -> void;
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auto SourceLoc() -> SourceLocation {
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return SourceLocation(input_file_name,
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static_cast<int>(current_token_position.begin.line));
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}
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// The source range of the token being (or just) lex'd.
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location current_token_position;
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private:
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// A path to the file processed, relative to the current working directory
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// when *this is called.
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Nonnull<const std::string*> input_file_name;
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};
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} // namespace Carbon
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// Gives flex the yylex prototype we want.
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#define YY_DECL \
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Carbon::Parser::symbol_type yylex(Carbon::Nonnull<Carbon::Arena*> arena, \
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yyscan_t yyscanner, \
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Carbon::ParseAndLexContext& context)
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// Declares yylex for the parser's sake.
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YY_DECL;
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#endif // EXECUTABLE_SYNTAX_DRIVER_H_
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