Tim Starling
104 linhas
3.1 KiB
C++
104 linhas
3.1 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#include "hphp/compiler/statement/while_statement.h"
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#include "hphp/compiler/analysis/analysis_result.h"
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#include "hphp/compiler/analysis/block_scope.h"
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using namespace HPHP;
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///////////////////////////////////////////////////////////////////////////////
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// constructors/destructors
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WhileStatement::WhileStatement
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(STATEMENT_CONSTRUCTOR_PARAMETERS,
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ExpressionPtr condition, StatementPtr stmt)
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: LoopStatement(STATEMENT_CONSTRUCTOR_PARAMETER_VALUES(WhileStatement)),
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m_condition(condition), m_stmt(stmt) {
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}
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StatementPtr WhileStatement::clone() {
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WhileStatementPtr stmt(new WhileStatement(*this));
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stmt->m_condition = Clone(m_condition);
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stmt->m_stmt = Clone(m_stmt);
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return stmt;
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}
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///////////////////////////////////////////////////////////////////////////////
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// parser functions
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///////////////////////////////////////////////////////////////////////////////
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// static analysis functions
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void WhileStatement::analyzeProgram(AnalysisResultPtr ar) {
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m_condition->analyzeProgram(ar);
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if (m_stmt) m_stmt->analyzeProgram(ar);
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}
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ConstructPtr WhileStatement::getNthKid(int n) const {
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switch (n) {
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case 0:
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return m_condition;
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case 1:
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return m_stmt;
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default:
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assert(false);
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break;
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}
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return ConstructPtr();
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}
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int WhileStatement::getKidCount() const {
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return 2;
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}
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void WhileStatement::setNthKid(int n, ConstructPtr cp) {
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switch (n) {
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case 0:
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m_condition = boost::dynamic_pointer_cast<Expression>(cp);
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break;
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case 1:
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m_stmt = boost::dynamic_pointer_cast<Statement>(cp);
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break;
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default:
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assert(false);
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break;
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}
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}
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void WhileStatement::inferTypes(AnalysisResultPtr ar) {
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m_condition->inferAndCheck(ar, Type::Boolean, false);
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if (m_stmt) {
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getScope()->incLoopNestedLevel();
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m_stmt->inferTypes(ar);
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getScope()->decLoopNestedLevel();
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// code generation functions
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void WhileStatement::outputPHP(CodeGenerator &cg, AnalysisResultPtr ar) {
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cg_printf("while (");
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m_condition->outputPHP(cg, ar);
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cg_printf(") ");
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if (m_stmt) {
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m_stmt->outputPHP(cg, ar);
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} else {
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cg_printf("{}\n");
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}
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}
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