1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/compiler/DirectiveHandler.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,161 @@
1.4 +//
1.5 +// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +#include "compiler/DirectiveHandler.h"
1.11 +
1.12 +#include <sstream>
1.13 +
1.14 +#include "compiler/compiler_debug.h"
1.15 +#include "compiler/Diagnostics.h"
1.16 +
1.17 +static TBehavior getBehavior(const std::string& str)
1.18 +{
1.19 + static const std::string kRequire("require");
1.20 + static const std::string kEnable("enable");
1.21 + static const std::string kDisable("disable");
1.22 + static const std::string kWarn("warn");
1.23 +
1.24 + if (str == kRequire) return EBhRequire;
1.25 + else if (str == kEnable) return EBhEnable;
1.26 + else if (str == kDisable) return EBhDisable;
1.27 + else if (str == kWarn) return EBhWarn;
1.28 + return EBhUndefined;
1.29 +}
1.30 +
1.31 +TDirectiveHandler::TDirectiveHandler(TExtensionBehavior& extBehavior,
1.32 + TDiagnostics& diagnostics)
1.33 + : mExtensionBehavior(extBehavior),
1.34 + mDiagnostics(diagnostics)
1.35 +{
1.36 +}
1.37 +
1.38 +TDirectiveHandler::~TDirectiveHandler()
1.39 +{
1.40 +}
1.41 +
1.42 +void TDirectiveHandler::handleError(const pp::SourceLocation& loc,
1.43 + const std::string& msg)
1.44 +{
1.45 + mDiagnostics.writeInfo(pp::Diagnostics::ERROR, loc, msg, "", "");
1.46 +}
1.47 +
1.48 +void TDirectiveHandler::handlePragma(const pp::SourceLocation& loc,
1.49 + const std::string& name,
1.50 + const std::string& value)
1.51 +{
1.52 + static const std::string kSTDGL("STDGL");
1.53 + static const std::string kOptimize("optimize");
1.54 + static const std::string kDebug("debug");
1.55 + static const std::string kOn("on");
1.56 + static const std::string kOff("off");
1.57 +
1.58 + bool invalidValue = false;
1.59 + if (name == kSTDGL)
1.60 + {
1.61 + // The STDGL pragma is used to reserve pragmas for use by future
1.62 + // revisions of GLSL. Ignore it.
1.63 + return;
1.64 + }
1.65 + else if (name == kOptimize)
1.66 + {
1.67 + if (value == kOn) mPragma.optimize = true;
1.68 + else if (value == kOff) mPragma.optimize = false;
1.69 + else invalidValue = true;
1.70 + }
1.71 + else if (name == kDebug)
1.72 + {
1.73 + if (value == kOn) mPragma.debug = true;
1.74 + else if (value == kOff) mPragma.debug = false;
1.75 + else invalidValue = true;
1.76 + }
1.77 + else
1.78 + {
1.79 + mDiagnostics.report(pp::Diagnostics::UNRECOGNIZED_PRAGMA, loc, name);
1.80 + return;
1.81 + }
1.82 +
1.83 + if (invalidValue)
1.84 + mDiagnostics.writeInfo(pp::Diagnostics::ERROR, loc,
1.85 + "invalid pragma value", value,
1.86 + "'on' or 'off' expected");
1.87 +}
1.88 +
1.89 +void TDirectiveHandler::handleExtension(const pp::SourceLocation& loc,
1.90 + const std::string& name,
1.91 + const std::string& behavior)
1.92 +{
1.93 + static const std::string kExtAll("all");
1.94 +
1.95 + TBehavior behaviorVal = getBehavior(behavior);
1.96 + if (behaviorVal == EBhUndefined)
1.97 + {
1.98 + mDiagnostics.writeInfo(pp::Diagnostics::ERROR, loc,
1.99 + "behavior", name, "invalid");
1.100 + return;
1.101 + }
1.102 +
1.103 + if (name == kExtAll)
1.104 + {
1.105 + if (behaviorVal == EBhRequire)
1.106 + {
1.107 + mDiagnostics.writeInfo(pp::Diagnostics::ERROR, loc,
1.108 + "extension", name,
1.109 + "cannot have 'require' behavior");
1.110 + }
1.111 + else if (behaviorVal == EBhEnable)
1.112 + {
1.113 + mDiagnostics.writeInfo(pp::Diagnostics::ERROR, loc,
1.114 + "extension", name,
1.115 + "cannot have 'enable' behavior");
1.116 + }
1.117 + else
1.118 + {
1.119 + for (TExtensionBehavior::iterator iter = mExtensionBehavior.begin();
1.120 + iter != mExtensionBehavior.end(); ++iter)
1.121 + iter->second = behaviorVal;
1.122 + }
1.123 + return;
1.124 + }
1.125 +
1.126 + TExtensionBehavior::iterator iter = mExtensionBehavior.find(name);
1.127 + if (iter != mExtensionBehavior.end())
1.128 + {
1.129 + iter->second = behaviorVal;
1.130 + return;
1.131 + }
1.132 +
1.133 + pp::Diagnostics::Severity severity = pp::Diagnostics::ERROR;
1.134 + switch (behaviorVal) {
1.135 + case EBhRequire:
1.136 + severity = pp::Diagnostics::ERROR;
1.137 + break;
1.138 + case EBhEnable:
1.139 + case EBhWarn:
1.140 + case EBhDisable:
1.141 + severity = pp::Diagnostics::WARNING;
1.142 + break;
1.143 + default:
1.144 + UNREACHABLE();
1.145 + break;
1.146 + }
1.147 + mDiagnostics.writeInfo(severity, loc,
1.148 + "extension", name, "is not supported");
1.149 +}
1.150 +
1.151 +void TDirectiveHandler::handleVersion(const pp::SourceLocation& loc,
1.152 + int version)
1.153 +{
1.154 + static const int kVersion = 100;
1.155 +
1.156 + if (version != kVersion)
1.157 + {
1.158 + std::stringstream stream;
1.159 + stream << version;
1.160 + std::string str = stream.str();
1.161 + mDiagnostics.writeInfo(pp::Diagnostics::ERROR, loc,
1.162 + "version number", str, "not supported");
1.163 + }
1.164 +}
