1 files changed, 142 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/preprocessor/Preprocessor.cpp b/src/3rdparty/angle/src/compiler/preprocessor/Preprocessor.cpp
new file mode 100644
index 0000000000..5ffc6420bc
--- /dev/null
+++ b/src/3rdparty/angle/src/compiler/preprocessor/Preprocessor.cpp
@@ -0,0 +1,142 @@
+//
+// Copyright (c) 2011 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "Preprocessor.h"
+
+#include <cassert>
+#include <sstream>
+
+#include "DiagnosticsBase.h"
+#include "DirectiveParser.h"
+#include "Macro.h"
+#include "MacroExpander.h"
+#include "Token.h"
+#include "Tokenizer.h"
+
+namespace pp
+{
+
+struct PreprocessorImpl
+{
+    Diagnostics* diagnostics;
+    MacroSet macroSet;
+    Tokenizer tokenizer;
+    DirectiveParser directiveParser;
+    MacroExpander macroExpander;
+
+    PreprocessorImpl(Diagnostics* diag,
+                     DirectiveHandler* directiveHandler) :
+        diagnostics(diag),
+        tokenizer(diag),
+        directiveParser(&tokenizer, &macroSet, diag, directiveHandler),
+        macroExpander(&directiveParser, &macroSet, diag)
+    {
+    }
+};
+
+Preprocessor::Preprocessor(Diagnostics* diagnostics,
+                           DirectiveHandler* directiveHandler)
+{
+    mImpl = new PreprocessorImpl(diagnostics, directiveHandler);
+}
+
+Preprocessor::~Preprocessor()
+{
+    delete mImpl;
+}
+
+bool Preprocessor::init(size_t count,
+                        const char* const string[],
+                        const int length[])
+{
+    static const int kGLSLVersion = 100;
+
+    // Add standard pre-defined macros.
+    predefineMacro("__LINE__", 0);
+    predefineMacro("__FILE__", 0);
+    predefineMacro("__VERSION__", kGLSLVersion);
+    predefineMacro("GL_ES", 1);
+
+    return mImpl->tokenizer.init(count, string, length);
+}
+
+void Preprocessor::predefineMacro(const char* name, int value)
+{
+    std::ostringstream stream;
+    stream << value;
+
+    Token token;
+    token.type = Token::CONST_INT;
+    token.text = stream.str();
+
+    Macro macro;
+    macro.predefined = true;
+    macro.type = Macro::kTypeObj;
+    macro.name = name;
+    macro.replacements.push_back(token);
+
+    mImpl->macroSet[name] = macro;
+}
+
+void Preprocessor::lex(Token* token)
+{
+    bool validToken = false;
+    while (!validToken)
+    {
+        mImpl->macroExpander.lex(token);
+        switch (token->type)
+        {
+          // We should not be returning internal preprocessing tokens.
+          // Convert preprocessing tokens to compiler tokens or report
+          // diagnostics.
+          case Token::PP_HASH:
+            assert(false);
+            break;
+          case Token::CONST_INT:
+          {
+            int val = 0;
+            if (!token->iValue(&val))
+            {
+                // Do not mark the token as invalid.
+                // Just emit the diagnostic and reset value to 0.
+                mImpl->diagnostics->report(Diagnostics::INTEGER_OVERFLOW,
+                                           token->location, token->text);
+                token->text.assign("0");
+            }
+            validToken = true;
+            break;
+          }
+          case Token::CONST_FLOAT:
+          {
+            float val = 0;
+            if (!token->fValue(&val))
+            {
+                // Do not mark the token as invalid.
+                // Just emit the diagnostic and reset value to 0.0.
+                mImpl->diagnostics->report(Diagnostics::FLOAT_OVERFLOW,
+                                           token->location, token->text);
+                token->text.assign("0.0");
+            }
+            validToken = true;
+            break;
+          }
+          case Token::PP_NUMBER:
+            mImpl->diagnostics->report(Diagnostics::INVALID_NUMBER,
+                                       token->location, token->text);
+            break;
+          case Token::PP_OTHER:
+            mImpl->diagnostics->report(Diagnostics::INVALID_CHARACTER,
+                                       token->location, token->text);
+            break;
+          default:
+            validToken = true;
+            break;
+        }
+    }
+}
+
+}  // namespace pp
+