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LibSQL: Introduce a SQL library with a tokenizer

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LibSQL aims to be a SQLite clone for SerenityOS. Step 1 is creating a
tokenizer to lex SQL tokens. This lexer is heavily influenced by the
LibJS lexer.
This commit is contained in:
Timothy Flynn 2021-04-18 17:35:40 -04:00 • committed by Andreas Kling
parent 55b7b8e930
commit 90517da9ca
6 changed files with 716 additions and 0 deletions
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1
Userland/Libraries/CMakeLists.txt
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@ -27,6 +27,7 @@ add_subdirectory(LibPCIDB)
add_subdirectory(LibProtocol) add_subdirectory(LibProtocol)
add_subdirectory(LibPthread) add_subdirectory(LibPthread)
add_subdirectory(LibRegex) add_subdirectory(LibRegex)
add_subdirectory(LibSQL)
add_subdirectory(LibSymbolClient) add_subdirectory(LibSymbolClient)
add_subdirectory(LibSyntax) add_subdirectory(LibSyntax)
add_subdirectory(LibSystem) add_subdirectory(LibSystem)

7
Userland/Libraries/LibSQL/CMakeLists.txt Normal file
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@ -0,0 +1,7 @@
set(SOURCES
Lexer.cpp
Token.cpp
)
serenity_lib(LibSQL sql)
target_link_libraries(LibSQL LibCore)

306
Userland/Libraries/LibSQL/Lexer.cpp Normal file
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/*
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Lexer.h"
#include <AK/Debug.h>
#include <ctype.h>
namespace SQL {
HashMap<String, TokenType> Lexer::s_keywords;
HashMap<char, TokenType> Lexer::s_one_char_tokens;
HashMap<String, TokenType> Lexer::s_two_char_tokens;
Lexer::Lexer(StringView source)
: m_source(source)
{
if (s_keywords.is_empty()) {
#define __ENUMERATE_SQL_TOKEN(value, type, category) \
if (TokenCategory::category == TokenCategory::Keyword) \
s_keywords.set(value, TokenType::type);
ENUMERATE_SQL_TOKENS
#undef __ENUMERATE_SQL_TOKEN
}
if (s_one_char_tokens.is_empty()) {
#define __ENUMERATE_SQL_TOKEN(value, type, category) \
if (TokenCategory::category != TokenCategory::Keyword && StringView(value).length() == 1) \
s_one_char_tokens.set(value[0], TokenType::type);
ENUMERATE_SQL_TOKENS
#undef __ENUMERATE_SQL_TOKEN
}
if (s_two_char_tokens.is_empty()) {
#define __ENUMERATE_SQL_TOKEN(value, type, category) \
if (TokenCategory::category != TokenCategory::Keyword && StringView(value).length() == 2) \
s_two_char_tokens.set(value, TokenType::type);
ENUMERATE_SQL_TOKENS
#undef __ENUMERATE_SQL_TOKEN
}
consume();
}
Token Lexer::next()
{
bool found_invalid_comment = consume_whitespace_and_comments();
size_t value_start = m_position;
size_t value_start_line_number = m_line_number;
size_t value_start_column_number = m_line_column;
auto token_type = TokenType::Invalid;
if (is_eof()) {
token_type = found_invalid_comment ? TokenType::Invalid : TokenType::Eof;
} else if (is_identifier_start()) {
do {
consume();
} while (is_identifier_middle());
if (auto it = s_keywords.find(m_source.substring_view(value_start - 1, m_position - value_start)); it != s_keywords.end()) {
token_type = it->value;
} else {
token_type = TokenType::Identifier;
}
} else if (is_numeric_literal_start()) {
token_type = TokenType::NumericLiteral;
if (!consume_numeric_literal())
token_type = TokenType::Invalid;
} else {
bool found_two_char_token = false;
if (m_position < m_source.length()) {
if (auto it = s_two_char_tokens.find(m_source.substring_view(m_position - 1, 2)); it != s_two_char_tokens.end()) {
found_two_char_token = true;
token_type = it->value;
consume();
consume();
}
}
bool found_one_char_token = false;
if (!found_two_char_token) {
if (auto it = s_one_char_tokens.find(m_current_char); it != s_one_char_tokens.end()) {
found_one_char_token = true;
token_type = it->value;
consume();
}
}
if (!found_two_char_token && !found_one_char_token) {
token_type = TokenType::Invalid;
consume();
}
}
Token token(token_type, m_source.substring_view(value_start - 1, m_position - value_start), value_start_line_number, value_start_column_number);
if constexpr (SQL_DEBUG) {
dbgln("------------------------------");
dbgln("Token: {}", token.name());
dbgln("Value: {}", token.value());
dbgln("Line: {}, Column: {}", token.line_number(), token.line_column());
dbgln("------------------------------");
}
return token;
}
void Lexer::consume()
{
auto did_reach_eof = [this] {
if (m_position != m_source.length())
return false;
m_current_char = EOF;
++m_line_column;
++m_position;
return true;
};
if (m_position > m_source.length())
return;
if (did_reach_eof())
return;
if (is_line_break()) {
++m_line_number;
m_line_column = 1;
} else {
++m_line_column;
}
m_current_char = m_source[m_position++];
}
bool Lexer::consume_whitespace_and_comments()
{
bool found_invalid_comment = false;
while (true) {
if (isspace(m_current_char)) {
do {
consume();
} while (isspace(m_current_char));
} else if (is_line_comment_start()) {
consume();
do {
consume();
} while (!is_eof() && !is_line_break());
} else if (is_block_comment_start()) {
consume();
do {
consume();
} while (!is_eof() && !is_block_comment_end());
if (is_eof())
found_invalid_comment = true;
consume(); // consume *
if (is_eof())
found_invalid_comment = true;
consume(); // consume /
} else {
break;
}
}
return found_invalid_comment;
}
bool Lexer::consume_numeric_literal()
{
// https://www.sqlite.org/draft/syntax/numeric-literal.html
bool is_valid_numeric_literal = true;
if (m_current_char == '0') {
consume();
if (m_current_char == '.') {
consume();
while (isdigit(m_current_char))
consume();
if (m_current_char == 'e' || m_current_char == 'E')
is_valid_numeric_literal = consume_exponent();
} else if (m_current_char == 'e' || m_current_char == 'E') {
is_valid_numeric_literal = consume_exponent();
} else if (m_current_char == 'x' || m_current_char == 'X') {
is_valid_numeric_literal = consume_hexadecimal_number();
} else if (isdigit(m_current_char)) {
do {
consume();
} while (isdigit(m_current_char));
}
} else {
do {
consume();
} while (isdigit(m_current_char));
if (m_current_char == '.') {
consume();
while (isdigit(m_current_char))
consume();
}
if (m_current_char == 'e' || m_current_char == 'E')
is_valid_numeric_literal = consume_exponent();
}
return is_valid_numeric_literal;
}
bool Lexer::consume_exponent()
{
consume();
if (m_current_char == '-' || m_current_char == '+')
consume();
if (!isdigit(m_current_char))
return false;
while (isdigit(m_current_char)) {
consume();
}
return true;
}
bool Lexer::consume_hexadecimal_number()
{
consume();
if (!isxdigit(m_current_char))
return false;
while (isxdigit(m_current_char))
consume();
return true;
}
bool Lexer::match(char a, char b) const
{
if (m_position >= m_source.length())
return false;
return m_current_char == a
&& m_source[m_position] == b;
}
bool Lexer::is_identifier_start() const
{
return isalpha(m_current_char) || m_current_char == '_';
}
bool Lexer::is_identifier_middle() const
{
return is_identifier_start() || isdigit(m_current_char);
}
bool Lexer::is_numeric_literal_start() const
{
return isdigit(m_current_char) || (m_current_char == '.' && m_position < m_source.length() && isdigit(m_source[m_position]));
}
bool Lexer::is_line_comment_start() const
{
return match('-', '-');
}
bool Lexer::is_block_comment_start() const
{
return match('/', '*');
}
bool Lexer::is_block_comment_end() const
{
return match('*', '/');
}
bool Lexer::is_line_break() const
{
return m_current_char == '\n';
}
bool Lexer::is_eof() const
{
return m_current_char == EOF;
}
}

71
Userland/Libraries/LibSQL/Lexer.h Normal file
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@ -0,0 +1,71 @@
/*
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "Token.h"
#include <AK/HashMap.h>
#include <AK/String.h>
#include <AK/StringView.h>
namespace SQL {
class Lexer {
public:
explicit Lexer(StringView source);
Token next();
private:
void consume();
bool consume_whitespace_and_comments();
bool consume_numeric_literal();
bool consume_exponent();
bool consume_hexadecimal_number();
bool match(char a, char b) const;
bool is_identifier_start() const;
bool is_identifier_middle() const;
bool is_numeric_literal_start() const;
bool is_line_comment_start() const;
bool is_block_comment_start() const;
bool is_block_comment_end() const;
bool is_line_break() const;
bool is_eof() const;
static HashMap<String, TokenType> s_keywords;
static HashMap<char, TokenType> s_one_char_tokens;
static HashMap<String, TokenType> s_two_char_tokens;
StringView m_source;
size_t m_line_number { 1 };
size_t m_line_column { 0 };
char m_current_char { 0 };
size_t m_position { 0 };
};
}

73
Userland/Libraries/LibSQL/Token.cpp Normal file
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@ -0,0 +1,73 @@
/*
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Token.h"
#include <AK/Assertions.h>
#include <AK/String.h>
#include <stdlib.h>
namespace SQL {
StringView Token::name(TokenType type)
{
switch (type) {
#define __ENUMERATE_SQL_TOKEN(value, type, category) \
case TokenType::type: \
return #type;
ENUMERATE_SQL_TOKENS
#undef __ENUMERATE_SQL_TOKEN
default:
VERIFY_NOT_REACHED();
}
}
TokenCategory Token::category(TokenType type)
{
switch (type) {
#define __ENUMERATE_SQL_TOKEN(value, type, category) \
case TokenType::type: \
return TokenCategory::category;
ENUMERATE_SQL_TOKENS
#undef __ENUMERATE_SQL_TOKEN
default:
VERIFY_NOT_REACHED();
}
}
double Token::double_value() const
{
VERIFY(type() == TokenType::NumericLiteral);
String value(m_value);
if (value[0] == '0' && value.length() >= 2) {
if (value[1] == 'x' || value[1] == 'X')
return static_cast<double>(strtoul(value.characters() + 2, nullptr, 16));
}
return strtod(value.characters(), nullptr);
}
}

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Userland/Libraries/LibSQL/Token.h Normal file
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/*
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/HashMap.h>
#include <AK/StringView.h>
namespace SQL {
// https://sqlite.org/lang_keywords.html
#define ENUMERATE_SQL_TOKENS \
__ENUMERATE_SQL_TOKEN("ABORT", Abort, Keyword) \
__ENUMERATE_SQL_TOKEN("ACTION", Action, Keyword) \
__ENUMERATE_SQL_TOKEN("ADD", Add, Keyword) \
__ENUMERATE_SQL_TOKEN("AFTER", After, Keyword) \
__ENUMERATE_SQL_TOKEN("ALL", All, Keyword) \
__ENUMERATE_SQL_TOKEN("ALTER", Alter, Keyword) \
__ENUMERATE_SQL_TOKEN("ALWAYS", Always, Keyword) \
__ENUMERATE_SQL_TOKEN("ANALYZE", Analyze, Keyword) \
__ENUMERATE_SQL_TOKEN("AND", And, Keyword) \
__ENUMERATE_SQL_TOKEN("AS", As, Keyword) \
__ENUMERATE_SQL_TOKEN("ASC", Asc, Keyword) \
__ENUMERATE_SQL_TOKEN("ATTACH", Attach, Keyword) \
__ENUMERATE_SQL_TOKEN("AUTOINCREMENT", Autoincrement, Keyword) \
__ENUMERATE_SQL_TOKEN("BEFORE", Before, Keyword) \
__ENUMERATE_SQL_TOKEN("BEGIN", Begin, Keyword) \
__ENUMERATE_SQL_TOKEN("BETWEEN", Between, Keyword) \
__ENUMERATE_SQL_TOKEN("BY", By, Keyword) \
__ENUMERATE_SQL_TOKEN("CASCADE", Cascade, Keyword) \
__ENUMERATE_SQL_TOKEN("CASE", Case, Keyword) \
__ENUMERATE_SQL_TOKEN("CAST", Cast, Keyword) \
__ENUMERATE_SQL_TOKEN("CHECK", Check, Keyword) \
__ENUMERATE_SQL_TOKEN("COLLATE", Collate, Keyword) \
__ENUMERATE_SQL_TOKEN("COLUMN", Column, Keyword) \
__ENUMERATE_SQL_TOKEN("COMMIT", Commit, Keyword) \
__ENUMERATE_SQL_TOKEN("CONFLICT", Conflict, Keyword) \
__ENUMERATE_SQL_TOKEN("CONSTRAINT", Constraint, Keyword) \
__ENUMERATE_SQL_TOKEN("CREATE", Create, Keyword) \
__ENUMERATE_SQL_TOKEN("CROSS", Cross, Keyword) \
__ENUMERATE_SQL_TOKEN("CURRENT", Current, Keyword) \
__ENUMERATE_SQL_TOKEN("CURRENT_DATE", CurrentDate, Keyword) \
__ENUMERATE_SQL_TOKEN("CURRENT_TIME", CurrentTime, Keyword) \
__ENUMERATE_SQL_TOKEN("CURRENT_TIMESTAMP", CurrentTimestamp, Keyword) \
__ENUMERATE_SQL_TOKEN("DATABASE", Database, Keyword) \
__ENUMERATE_SQL_TOKEN("DEFAULT", Default, Keyword) \
__ENUMERATE_SQL_TOKEN("DEFERRABLE", Deferrable, Keyword) \
__ENUMERATE_SQL_TOKEN("DEFERRED", Deferred, Keyword) \
__ENUMERATE_SQL_TOKEN("DELETE", Delete, Keyword) \
__ENUMERATE_SQL_TOKEN("DESC", Desc, Keyword) \
__ENUMERATE_SQL_TOKEN("DETACH", Detach, Keyword) \
__ENUMERATE_SQL_TOKEN("DISTINCT", Distinct, Keyword) \
__ENUMERATE_SQL_TOKEN("DO", Do, Keyword) \
__ENUMERATE_SQL_TOKEN("DROP", Drop, Keyword) \
__ENUMERATE_SQL_TOKEN("EACH", Each, Keyword) \
__ENUMERATE_SQL_TOKEN("ELSE", Else, Keyword) \
__ENUMERATE_SQL_TOKEN("END", End, Keyword) \
__ENUMERATE_SQL_TOKEN("ESCAPE", Escape, Keyword) \
__ENUMERATE_SQL_TOKEN("EXCEPT", Except, Keyword) \
__ENUMERATE_SQL_TOKEN("EXCLUDE", Exclude, Keyword) \
__ENUMERATE_SQL_TOKEN("EXCLUSIVE", Exclusive, Keyword) \
__ENUMERATE_SQL_TOKEN("EXISTS", Exists, Keyword) \
__ENUMERATE_SQL_TOKEN("EXPLAIN", Explain, Keyword) \
__ENUMERATE_SQL_TOKEN("FAIL", Fail, Keyword) \
__ENUMERATE_SQL_TOKEN("FILTER", Filter, Keyword) \
__ENUMERATE_SQL_TOKEN("FIRST", First, Keyword) \
__ENUMERATE_SQL_TOKEN("FOLLOWING", Following, Keyword) \
__ENUMERATE_SQL_TOKEN("FOR", For, Keyword) \
__ENUMERATE_SQL_TOKEN("FOREIGN", Foreign, Keyword) \
__ENUMERATE_SQL_TOKEN("FROM", From, Keyword) \
__ENUMERATE_SQL_TOKEN("FULL", Full, Keyword) \
__ENUMERATE_SQL_TOKEN("GENERATED", Generated, Keyword) \
__ENUMERATE_SQL_TOKEN("GLOB", Glob, Keyword) \
__ENUMERATE_SQL_TOKEN("GROUP", Group, Keyword) \
__ENUMERATE_SQL_TOKEN("GROUPS", Groups, Keyword) \
__ENUMERATE_SQL_TOKEN("HAVING", Having, Keyword) \
__ENUMERATE_SQL_TOKEN("IF", If, Keyword) \
__ENUMERATE_SQL_TOKEN("IGNORE", Ignore, Keyword) \
__ENUMERATE_SQL_TOKEN("IMMEDIATE", Immediate, Keyword) \
__ENUMERATE_SQL_TOKEN("IN", In, Keyword) \
__ENUMERATE_SQL_TOKEN("INDEX", Index, Keyword) \
__ENUMERATE_SQL_TOKEN("INDEXED", Indexed, Keyword) \
__ENUMERATE_SQL_TOKEN("INITIALLY", Initially, Keyword) \
__ENUMERATE_SQL_TOKEN("INNER", Inner, Keyword) \
__ENUMERATE_SQL_TOKEN("INSERT", Insert, Keyword) \
__ENUMERATE_SQL_TOKEN("INSTEAD", Instead, Keyword) \
__ENUMERATE_SQL_TOKEN("INTERSECT", Intersect, Keyword) \
__ENUMERATE_SQL_TOKEN("INTO", Into, Keyword) \
__ENUMERATE_SQL_TOKEN("IS", Is, Keyword) \
__ENUMERATE_SQL_TOKEN("ISNULL", Isnull, Keyword) \
__ENUMERATE_SQL_TOKEN("JOIN", Join, Keyword) \
__ENUMERATE_SQL_TOKEN("KEY", Key, Keyword) \
__ENUMERATE_SQL_TOKEN("LAST", Last, Keyword) \
__ENUMERATE_SQL_TOKEN("LEFT", Left, Keyword) \
__ENUMERATE_SQL_TOKEN("LIKE", Like, Keyword) \
__ENUMERATE_SQL_TOKEN("LIMIT", Limit, Keyword) \
__ENUMERATE_SQL_TOKEN("MATCH", Match, Keyword) \
__ENUMERATE_SQL_TOKEN("MATERIALIZED", Materialized, Keyword) \
__ENUMERATE_SQL_TOKEN("NATURAL", Natural, Keyword) \
__ENUMERATE_SQL_TOKEN("NO", No, Keyword) \
__ENUMERATE_SQL_TOKEN("NOT", Not, Keyword) \
__ENUMERATE_SQL_TOKEN("NOTHING", Nothing, Keyword) \
__ENUMERATE_SQL_TOKEN("NOTNULL", Notnull, Keyword) \
__ENUMERATE_SQL_TOKEN("NULL", Null, Keyword) \
__ENUMERATE_SQL_TOKEN("NULLS", Nulls, Keyword) \
__ENUMERATE_SQL_TOKEN("OF", Of, Keyword) \
__ENUMERATE_SQL_TOKEN("OFFSET", Offset, Keyword) \
__ENUMERATE_SQL_TOKEN("ON", On, Keyword) \
__ENUMERATE_SQL_TOKEN("OR", Or, Keyword) \
__ENUMERATE_SQL_TOKEN("ORDER", Order, Keyword) \
__ENUMERATE_SQL_TOKEN("OTHERS", Others, Keyword) \
__ENUMERATE_SQL_TOKEN("OUTER", Outer, Keyword) \
__ENUMERATE_SQL_TOKEN("OVER", Over, Keyword) \
__ENUMERATE_SQL_TOKEN("PARTITION", Partition, Keyword) \
__ENUMERATE_SQL_TOKEN("PLAN", Plan, Keyword) \
__ENUMERATE_SQL_TOKEN("PRAGMA", Pragma, Keyword) \
__ENUMERATE_SQL_TOKEN("PRECEDING", Preceding, Keyword) \
__ENUMERATE_SQL_TOKEN("PRIMARY", Primary, Keyword) \
__ENUMERATE_SQL_TOKEN("QUERY", Query, Keyword) \
__ENUMERATE_SQL_TOKEN("RAISE", Raise, Keyword) \
__ENUMERATE_SQL_TOKEN("RANGE", Range, Keyword) \
__ENUMERATE_SQL_TOKEN("RECURSIVE", Recursive, Keyword) \
__ENUMERATE_SQL_TOKEN("REFERENCES", References, Keyword) \
__ENUMERATE_SQL_TOKEN("REGEXP", Regexp, Keyword) \
__ENUMERATE_SQL_TOKEN("REINDEX", Reindex, Keyword) \
__ENUMERATE_SQL_TOKEN("RELEASE", Release, Keyword) \
__ENUMERATE_SQL_TOKEN("RENAME", Rename, Keyword) \
__ENUMERATE_SQL_TOKEN("REPLACE", Replace, Keyword) \
__ENUMERATE_SQL_TOKEN("RESTRICT", Restrict, Keyword) \
__ENUMERATE_SQL_TOKEN("RETURNING", Returning, Keyword) \
__ENUMERATE_SQL_TOKEN("RIGHT", Right, Keyword) \
__ENUMERATE_SQL_TOKEN("ROLLBACK", Rollback, Keyword) \
__ENUMERATE_SQL_TOKEN("ROW", Row, Keyword) \
__ENUMERATE_SQL_TOKEN("ROWS", Rows, Keyword) \
__ENUMERATE_SQL_TOKEN("SAVEPOINT", Savepoint, Keyword) \
__ENUMERATE_SQL_TOKEN("SELECT", Select, Keyword) \
__ENUMERATE_SQL_TOKEN("SET", Set, Keyword) \
__ENUMERATE_SQL_TOKEN("TABLE", Table, Keyword) \
__ENUMERATE_SQL_TOKEN("TEMP", Temp, Keyword) \
__ENUMERATE_SQL_TOKEN("TEMPORARY", Temporary, Keyword) \
__ENUMERATE_SQL_TOKEN("THEN", Then, Keyword) \
__ENUMERATE_SQL_TOKEN("TIES", Ties, Keyword) \
__ENUMERATE_SQL_TOKEN("TO", To, Keyword) \
__ENUMERATE_SQL_TOKEN("TRANSACTION", Transaction, Keyword) \
__ENUMERATE_SQL_TOKEN("TRIGGER", Trigger, Keyword) \
__ENUMERATE_SQL_TOKEN("UNBOUNDED", Unbounded, Keyword) \
__ENUMERATE_SQL_TOKEN("UNION", Union, Keyword) \
__ENUMERATE_SQL_TOKEN("UNIQUE", Unique, Keyword) \
__ENUMERATE_SQL_TOKEN("UPDATE", Update, Keyword) \
__ENUMERATE_SQL_TOKEN("USING", Using, Keyword) \
__ENUMERATE_SQL_TOKEN("VACUUM", Vacuum, Keyword) \
__ENUMERATE_SQL_TOKEN("VALUES", Values, Keyword) \
__ENUMERATE_SQL_TOKEN("VIEW", View, Keyword) \
__ENUMERATE_SQL_TOKEN("VIRTUAL", Virtual, Keyword) \
__ENUMERATE_SQL_TOKEN("WHEN", When, Keyword) \
__ENUMERATE_SQL_TOKEN("WHERE", Where, Keyword) \
__ENUMERATE_SQL_TOKEN("WINDOW", Window, Keyword) \
__ENUMERATE_SQL_TOKEN("WITH", With, Keyword) \
__ENUMERATE_SQL_TOKEN("WITHOUT", Without, Keyword) \
__ENUMERATE_SQL_TOKEN("_identifier_", Identifier, Identifier) \
__ENUMERATE_SQL_TOKEN("_numeric_", NumericLiteral, Number) \
__ENUMERATE_SQL_TOKEN("_eof_", Eof, Invalid) \
__ENUMERATE_SQL_TOKEN("_invalid_", Invalid, Invalid) \
__ENUMERATE_SQL_TOKEN("&", Ampersand, Operator) \
__ENUMERATE_SQL_TOKEN("*", Asterisk, Operator) \
__ENUMERATE_SQL_TOKEN(",", Comma, Punctuation) \
__ENUMERATE_SQL_TOKEN("/", Divide, Operator) \
__ENUMERATE_SQL_TOKEN("||", DoublePipe, Operator) \
__ENUMERATE_SQL_TOKEN("=", Equals, Operator) \
__ENUMERATE_SQL_TOKEN("==", EqualsEquals, Operator) \
__ENUMERATE_SQL_TOKEN(">", GreaterThan, Operator) \
__ENUMERATE_SQL_TOKEN(">=", GreaterThanEquals, Operator) \
__ENUMERATE_SQL_TOKEN("<", LessThan, Operator) \
__ENUMERATE_SQL_TOKEN("<=", LessThanEquals, Operator) \
__ENUMERATE_SQL_TOKEN("-", Minus, Operator) \
__ENUMERATE_SQL_TOKEN("%", Modulus, Operator) \
__ENUMERATE_SQL_TOKEN("!=", NotEquals1, Operator) \
__ENUMERATE_SQL_TOKEN("<>", NotEquals2, Operator) \
__ENUMERATE_SQL_TOKEN(")", ParenClose, Punctuation) \
__ENUMERATE_SQL_TOKEN("(", ParenOpen, Punctuation) \
__ENUMERATE_SQL_TOKEN(".", Period, Operator) \
__ENUMERATE_SQL_TOKEN("|", Pipe, Operator) \
__ENUMERATE_SQL_TOKEN("+", Plus, Operator) \
__ENUMERATE_SQL_TOKEN(";", SemiColon, Punctuation) \
__ENUMERATE_SQL_TOKEN("<<", ShiftLeft, Operator) \
__ENUMERATE_SQL_TOKEN(">>", ShiftRight, Operator) \
__ENUMERATE_SQL_TOKEN("~", Tilde, Operator)
enum class TokenType {
#define __ENUMERATE_SQL_TOKEN(value, type, category) type,
ENUMERATE_SQL_TOKENS
#undef __ENUMERATE_SQL_TOKEN
_COUNT_OF_TOKENS,
};
enum class TokenCategory {
Invalid,
Keyword,
Identifier,
Number,
Operator,
Punctuation,
};
class Token {
public:
Token(TokenType type, StringView value, size_t line_number, size_t line_column)
: m_type(type)
, m_value(value)
, m_line_number(line_number)
, m_line_column(line_column)
{
}
static StringView name(TokenType);
static TokenCategory category(TokenType);
StringView name() const { return name(m_type); }
TokenType type() const { return m_type; }
TokenCategory category() const { return category(m_type); }
StringView value() const { return m_value; }
double double_value() const;
size_t line_number() const { return m_line_number; }
size_t line_column() const { return m_line_column; }
private:
TokenType m_type;
StringView m_value;
size_t m_line_number;
size_t m_line_column;
};
}