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/*
* Copyright 2017 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "src/token.h"
namespace wabt {
const char* GetTokenTypeName(TokenType token_type) {
static const char* s_names[] = {
#define WABT_TOKEN(name, string) string,
#define WABT_TOKEN_FIRST(name, string)
#define WABT_TOKEN_LAST(name, string)
#include "token.def"
#undef WABT_TOKEN
#undef WABT_TOKEN_FIRST
#undef WABT_TOKEN_LAST
};
static_assert(
WABT_ARRAY_SIZE(s_names) == WABT_ENUM_COUNT(TokenType),
"Expected TokenType names list length to match number of TokenTypes.");
int x = static_cast<int>(token_type);
if (x < WABT_ENUM_COUNT(TokenType)) {
return s_names[x];
}
return "Invalid";
}
Token::Token(Location loc, TokenType token_type)
: loc(loc), token_type_(token_type) {
assert(IsTokenTypeBare(token_type_));
}
Token::Token(Location loc, TokenType token_type, Type type)
: loc(loc), token_type_(token_type) {
assert(HasType());
Construct(type_, type);
}
Token::Token(Location loc, TokenType token_type, const std::string& text)
: loc(loc), token_type_(token_type) {
assert(HasText());
Construct(text_, text);
}
Token::Token(Location loc, TokenType token_type, Opcode opcode)
: loc(loc), token_type_(token_type) {
assert(HasOpcode());
Construct(opcode_, opcode);
}
Token::Token(Location loc, TokenType token_type, const Literal& literal)
: loc(loc), token_type_(token_type) {
assert(HasLiteral());
Construct(literal_, literal);
}
Token::Token(const Token& other) : Token() {
*this = other;
}
Token::Token(Token&& other) : Token() {
*this = std::move(other);
}
Token& Token::operator=(const Token& other) {
Destroy();
loc = other.loc;
token_type_ = other.token_type_;
if (HasLiteral()) {
Construct(literal_, other.literal_);
} else if (HasOpcode()) {
Construct(opcode_, other.opcode_);
} else if (HasText()) {
Construct(text_, other.text_);
} else if (HasType()) {
Construct(type_, other.type_);
}
return *this;
}
Token& Token::operator=(Token&& other) {
Destroy();
loc = other.loc;
token_type_ = other.token_type_;
if (HasLiteral()) {
Construct(literal_, std::move(other.literal_));
} else if (HasOpcode()) {
Construct(opcode_, std::move(other.opcode_));
} else if (HasText()) {
Construct(text_, std::move(other.text_));
} else if (HasType()) {
Construct(type_, std::move(other.type_));
}
other.token_type_ = TokenType::Invalid;
return *this;
}
Token::~Token() {
Destroy();
}
void Token::Destroy() {
if (HasLiteral()) {
Destruct(literal_);
} else if (HasOpcode()) {
Destruct(opcode_);
} else if (HasText()) {
Destruct(text_);
} else if (HasType()) {
Destruct(type_);
}
token_type_ = TokenType::Invalid;
}
std::string Token::to_string() const {
if (IsTokenTypeBare(token_type_)) {
return GetTokenTypeName(token_type_);
} else if (HasLiteral()) {
return literal_.text;
} else if (HasOpcode()) {
return opcode_.GetName();
} else if (HasText()) {
return text_;
} else {
assert(HasType());
return GetTypeName(type_);
}
}
std::string Token::to_string_clamp(size_t max_length) const {
std::string s = to_string();
if (s.length() > max_length) {
return s.substr(0, max_length - 3) + "...";
} else {
return s;
}
}
} // namespace wabt
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