/*-------------------------------------------------------------------------
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* drawElements Quality Program Random Shader Generator
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* ----------------------------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*//*!
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* \file
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* \brief Expression generator.
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*//*--------------------------------------------------------------------*/
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#include "rsgFunctionGenerator.hpp"
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#include "rsgUtils.hpp"
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using std::vector;
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namespace rsg
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{
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FunctionGenerator::FunctionGenerator (GeneratorState& state, Function& function)
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: m_state (state)
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, m_function (function)
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{
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}
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FunctionGenerator::~FunctionGenerator (void)
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{
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}
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void FunctionGenerator::generate (void)
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{
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std::vector<Statement*> statementStack;
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// Initialize
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m_state.setStatementStack(statementStack);
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statementStack.push_back(&m_function.getBody());
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m_function.getBody().init(m_state);
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// Process until statement stack is empty
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while (!statementStack.empty())
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{
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DE_ASSERT((int)statementStack.size() <= m_state.getShaderParameters().maxStatementDepth);
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Statement* curStatement = statementStack.back();
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Statement* childStatement = curStatement->createNextChild(m_state);
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if (childStatement)
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statementStack.push_back(childStatement);
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else
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statementStack.pop_back();
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}
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// Create assignments if variables have bound value range
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for (vector<Variable*>::iterator i = m_requiredAssignments.begin(); i != m_requiredAssignments.end(); i++)
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{
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Variable* variable = *i;
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const ValueEntry* entry = m_state.getVariableManager().getValue(variable);
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ValueRange valueRange(variable->getType());
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valueRange.getMin() = entry->getValueRange().getMin().value();
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valueRange.getMax() = entry->getValueRange().getMax().value();
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// Remove value entry from this scope. After this entry ptr is invalid.
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m_state.getVariableManager().removeValueFromCurrentScope(variable);
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if (!isUndefinedValueRange(valueRange.asAccess()))
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m_function.getBody().addChild(new AssignStatement(m_state, variable, valueRange.asAccess()));
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}
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}
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} // rsg
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