1 files changed, 107 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/preprocessor/Preprocessor.cpp b/gfx/angle/checkout/src/compiler/preprocessor/Preprocessor.cpp
new file mode 100644
index 0000000000..8ff4a76632
--- /dev/null
+++ b/gfx/angle/checkout/src/compiler/preprocessor/Preprocessor.cpp
@@ -0,0 +1,107 @@
+//
+// Copyright 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 "compiler/preprocessor/Preprocessor.h"
+
+#include "common/debug.h"
+#include "compiler/preprocessor/DiagnosticsBase.h"
+#include "compiler/preprocessor/DirectiveParser.h"
+#include "compiler/preprocessor/Macro.h"
+#include "compiler/preprocessor/MacroExpander.h"
+#include "compiler/preprocessor/Token.h"
+#include "compiler/preprocessor/Tokenizer.h"
+
+namespace angle
+{
+
+namespace pp
+{
+
+struct PreprocessorImpl
+{
+    Diagnostics *diagnostics;
+    MacroSet macroSet;
+    Tokenizer tokenizer;
+    DirectiveParser directiveParser;
+    MacroExpander macroExpander;
+
+    PreprocessorImpl(Diagnostics *diag,
+                     DirectiveHandler *directiveHandler,
+                     const PreprocessorSettings &settings)
+        : diagnostics(diag),
+          tokenizer(diag),
+          directiveParser(&tokenizer, &macroSet, diag, directiveHandler, settings),
+          macroExpander(&directiveParser, &macroSet, diag, settings, false)
+    {}
+};
+
+Preprocessor::Preprocessor(Diagnostics *diagnostics,
+                           DirectiveHandler *directiveHandler,
+                           const PreprocessorSettings &settings)
+{
+    mImpl = new PreprocessorImpl(diagnostics, directiveHandler, settings);
+}
+
+Preprocessor::~Preprocessor()
+{
+    delete mImpl;
+}
+
+bool Preprocessor::init(size_t count, const char *const string[], const int length[])
+{
+    static const int kDefaultGLSLVersion = 100;
+
+    // Add standard pre-defined macros.
+    predefineMacro("__LINE__", 0);
+    predefineMacro("__FILE__", 0);
+    predefineMacro("__VERSION__", kDefaultGLSLVersion);
+    predefineMacro("GL_ES", 1);
+
+    return mImpl->tokenizer.init(count, string, length);
+}
+
+void Preprocessor::predefineMacro(const char *name, int value)
+{
+    PredefineMacro(&mImpl->macroSet, name, value);
+}
+
+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:
+                UNREACHABLE();
+                break;
+            case Token::PP_NUMBER:
+                mImpl->diagnostics->report(Diagnostics::PP_INVALID_NUMBER, token->location,
+                                           token->text);
+                break;
+            case Token::PP_OTHER:
+                mImpl->diagnostics->report(Diagnostics::PP_INVALID_CHARACTER, token->location,
+                                           token->text);
+                break;
+            default:
+                validToken = true;
+                break;
+        }
+    }
+}
+
+void Preprocessor::setMaxTokenSize(size_t maxTokenSize)
+{
+    mImpl->tokenizer.setMaxTokenSize(maxTokenSize);
+}
+
+}  // namespace pp
+
+}  // namespace angle