1 files changed, 117 insertions, 0 deletions
diff --git a/src/wast-parser-lexer-shared.cc b/src/wast-parser-lexer-shared.cc
new file mode 100644
index 00000000..d5211704
--- /dev/null
+++ b/src/wast-parser-lexer-shared.cc
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2016 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 "wast-parser-lexer-shared.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <string>
+
+namespace wabt {
+
+void wast_parser_error(Location* loc,
+                       WastLexer* lexer,
+                       WastParser* parser,
+                       const char* format,
+                       ...) {
+  parser->errors++;
+  va_list args;
+  va_start(args, format);
+  wast_format_error(parser->error_handler, loc, lexer, format, args);
+  va_end(args);
+}
+
+void wast_format_error(SourceErrorHandler* error_handler,
+                       const struct Location* loc,
+                       WastLexer* lexer,
+                       const char* format,
+                       va_list args) {
+  va_list args_copy;
+  va_copy(args_copy, args);
+  char fixed_buf[WABT_DEFAULT_SNPRINTF_ALLOCA_BUFSIZE];
+  char* buffer = fixed_buf;
+  size_t len = wabt_vsnprintf(fixed_buf, sizeof(fixed_buf), format, args);
+  if (len + 1 > sizeof(fixed_buf)) {
+    buffer = static_cast<char*>(alloca(len + 1));
+    len = wabt_vsnprintf(buffer, len + 1, format, args_copy);
+  }
+
+  char* source_line = nullptr;
+  size_t source_line_length = 0;
+  int source_line_column_offset = 0;
+  size_t source_line_max_length = error_handler->source_line_max_length();
+  if (loc && lexer) {
+    source_line = static_cast<char*>(alloca(source_line_max_length + 1));
+    Result result = wast_lexer_get_source_line(
+        lexer, loc, source_line_max_length, source_line, &source_line_length,
+        &source_line_column_offset);
+    if (WABT_FAILED(result)) {
+      /* if this fails, it means that we've probably screwed up the lexer. blow
+       * up. */
+      WABT_FATAL("error getting the source line.\n");
+    }
+  }
+
+  error_handler->OnError(loc, std::string(buffer),
+                         std::string(source_line, source_line_length),
+                         source_line_column_offset);
+  va_end(args_copy);
+}
+
+void destroy_text_list(TextList* text_list) {
+  TextListNode* node = text_list->first;
+  while (node) {
+    TextListNode* next = node->next;
+    destroy_string_slice(&node->text);
+    delete node;
+    node = next;
+  }
+}
+
+FuncField::FuncField()
+    : type(FuncFieldType::Exprs), first_expr(nullptr), next(nullptr) {}
+
+FuncField::~FuncField() {
+  switch (type) {
+    case FuncFieldType::Exprs:
+      destroy_expr_list(first_expr);
+      break;
+
+    case FuncFieldType::ParamTypes:
+    case FuncFieldType::LocalTypes:
+    case FuncFieldType::ResultTypes:
+      delete types;
+      break;
+
+    case FuncFieldType::BoundParam:
+    case FuncFieldType::BoundLocal:
+      destroy_string_slice(&bound_type.name);
+      break;
+  }
+}
+
+void destroy_func_fields(FuncField* func_field) {
+  /* destroy the entire linked-list */
+  while (func_field) {
+    FuncField* next_func_field = func_field->next;
+    delete func_field;
+    func_field = next_func_field;
+  }
+}
+
+}  // namespace wabt