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https://github.com/carbon-language/carbon-lang.git
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Richard SmithandChandler Carruth
a83c22288f
Lex [iuf][1-9][0-9]* as a new kind of "sized type literal" token. When parsing that token, form a literal expression. Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
110 lines
3.5 KiB
C++
110 lines
3.5 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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#include "toolchain/lexer/token_kind.h"
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#include "llvm/ADT/StringRef.h"
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namespace Carbon {
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auto TokenKind::Name() const -> llvm::StringRef {
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static constexpr llvm::StringLiteral Names[] = {
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#define CARBON_TOKEN(TokenName) #TokenName,
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#include "toolchain/lexer/token_registry.def"
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};
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return Names[static_cast<int>(kind_value)];
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}
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auto TokenKind::IsSymbol() const -> bool {
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static constexpr bool Table[] = {
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#define CARBON_TOKEN(TokenName) false,
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#define CARBON_SYMBOL_TOKEN(TokenName, Spelling) true,
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#include "toolchain/lexer/token_registry.def"
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};
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return Table[static_cast<int>(kind_value)];
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}
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auto TokenKind::IsGroupingSymbol() const -> bool {
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static constexpr bool Table[] = {
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#define CARBON_TOKEN(TokenName) false,
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#define CARBON_OPENING_GROUP_SYMBOL_TOKEN(TokenName, Spelling, ClosingName) \
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true,
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#define CARBON_CLOSING_GROUP_SYMBOL_TOKEN(TokenName, Spelling, OpeningName) \
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true,
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#include "toolchain/lexer/token_registry.def"
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};
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return Table[static_cast<int>(kind_value)];
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}
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auto TokenKind::IsOpeningSymbol() const -> bool {
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static constexpr bool Table[] = {
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#define CARBON_TOKEN(TokenName) false,
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#define CARBON_OPENING_GROUP_SYMBOL_TOKEN(TokenName, Spelling, ClosingName) \
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true,
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#include "toolchain/lexer/token_registry.def"
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};
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return Table[static_cast<int>(kind_value)];
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}
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auto TokenKind::GetClosingSymbol() const -> TokenKind {
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static constexpr TokenKind Table[] = {
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#define CARBON_TOKEN(TokenName) Error(),
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#define CARBON_OPENING_GROUP_SYMBOL_TOKEN(TokenName, Spelling, ClosingName) \
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ClosingName(),
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#include "toolchain/lexer/token_registry.def"
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};
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auto result = Table[static_cast<int>(kind_value)];
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assert(result != Error() && "Only opening symbols are valid!");
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return result;
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}
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auto TokenKind::IsClosingSymbol() const -> bool {
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static constexpr bool Table[] = {
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#define CARBON_TOKEN(TokenName) false,
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#define CARBON_CLOSING_GROUP_SYMBOL_TOKEN(TokenName, Spelling, OpeningName) \
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true,
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#include "toolchain/lexer/token_registry.def"
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};
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return Table[static_cast<int>(kind_value)];
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}
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auto TokenKind::GetOpeningSymbol() const -> TokenKind {
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static constexpr TokenKind Table[] = {
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#define CARBON_TOKEN(TokenName) Error(),
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#define CARBON_CLOSING_GROUP_SYMBOL_TOKEN(TokenName, Spelling, OpeningName) \
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OpeningName(),
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#include "toolchain/lexer/token_registry.def"
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};
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auto result = Table[static_cast<int>(kind_value)];
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assert(result != Error() && "Only closing symbols are valid!");
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return result;
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}
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auto TokenKind::IsKeyword() const -> bool {
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static constexpr bool Table[] = {
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#define CARBON_TOKEN(TokenName) false,
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#define CARBON_KEYWORD_TOKEN(TokenName, Spelling) true,
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#include "toolchain/lexer/token_registry.def"
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};
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return Table[static_cast<int>(kind_value)];
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}
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auto TokenKind::IsSizedTypeLiteral() const -> bool {
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return *this == TokenKind::IntegerTypeLiteral() ||
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*this == TokenKind::UnsignedIntegerTypeLiteral() ||
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*this == TokenKind::FloatingPointTypeLiteral();
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}
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auto TokenKind::GetFixedSpelling() const -> llvm::StringRef {
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static constexpr llvm::StringLiteral Table[] = {
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#define CARBON_TOKEN(TokenName) "",
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#define CARBON_SYMBOL_TOKEN(TokenName, Spelling) Spelling,
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#define CARBON_KEYWORD_TOKEN(TokenName, Spelling) Spelling,
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#include "toolchain/lexer/token_registry.def"
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};
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return Table[static_cast<int>(kind_value)];
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}
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} // namespace Carbon
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