1 files changed, 99 insertions, 0 deletions
diff --git a/third_party/wasm2c/src/token.cc b/third_party/wasm2c/src/token.cc
new file mode 100644
index 0000000000..576fadd185
--- /dev/null
+++ b/third_party/wasm2c/src/token.cc
@@ -0,0 +1,99 @@
+/*
+ * 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 "wabt/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 "wabt/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, std::string_view 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);
+}
+
+std::string Token::to_string() const {
+  if (IsTokenTypeBare(token_type_)) {
+    return GetTokenTypeName(token_type_);
+  } else if (HasLiteral()) {
+    return std::string(literal_.text);
+  } else if (HasOpcode()) {
+    return opcode_.GetName();
+  } else if (HasText()) {
+    return std::string(text_);
+  } else if (IsTokenTypeRefKind(token_type_)) {
+    return type_.GetRefKindName();
+  } else {
+    assert(HasType());
+    return type_.GetName();
+  }
+}
+
+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