Tim Starling
140 linhas
4.2 KiB
C++
140 linhas
4.2 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/for_statement.h"
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#include "hphp/compiler/expression/expression_list.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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static void setListKind(ExpressionPtr e)
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{
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if (e && e->is(Expression::KindOfExpressionList)) {
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ExpressionListPtr list =
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static_pointer_cast<ExpressionList>(e);
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list->setListKind(ExpressionList::ListKindComma);
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}
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}
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ForStatement::ForStatement
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(STATEMENT_CONSTRUCTOR_PARAMETERS,
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ExpressionPtr exp1, ExpressionPtr exp2, ExpressionPtr exp3, StatementPtr stmt)
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: LoopStatement(STATEMENT_CONSTRUCTOR_PARAMETER_VALUES(ForStatement)),
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m_exp1(exp1), m_exp2(exp2), m_exp3(exp3), m_stmt(stmt) {
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setListKind(m_exp1);
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setListKind(m_exp2);
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setListKind(m_exp3);
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}
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StatementPtr ForStatement::clone() {
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ForStatementPtr stmt(new ForStatement(*this));
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stmt->m_exp1 = Clone(m_exp1);
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stmt->m_exp2 = Clone(m_exp2);
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stmt->m_exp3 = Clone(m_exp3);
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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 ForStatement::analyzeProgram(AnalysisResultPtr ar) {
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if (m_exp1) m_exp1->analyzeProgram(ar);
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if (m_exp2) m_exp2->analyzeProgram(ar);
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if (m_exp3) m_exp3->analyzeProgram(ar);
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if (m_stmt) m_stmt->analyzeProgram(ar);
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}
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ConstructPtr ForStatement::getNthKid(int n) const {
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switch (n) {
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case 0:
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return m_exp1;
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case 1:
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return m_exp2;
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case 2:
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return m_stmt;
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case 3:
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return m_exp3;
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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 ForStatement::getKidCount() const {
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return 4;
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}
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void ForStatement::setNthKid(int n, ConstructPtr cp) {
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switch (n) {
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case 0:
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m_exp1 = boost::dynamic_pointer_cast<Expression>(cp);
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break;
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case 1:
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m_exp2 = boost::dynamic_pointer_cast<Expression>(cp);
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break;
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case 2:
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m_stmt = boost::dynamic_pointer_cast<Statement>(cp);
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break;
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case 3:
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m_exp3 = boost::dynamic_pointer_cast<Expression>(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 ForStatement::inferTypes(AnalysisResultPtr ar) {
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if (m_exp1) m_exp1->inferAndCheck(ar, Type::Any, false);
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if (m_exp2) m_exp2->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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if (m_exp3) m_exp3->inferAndCheck(ar, Type::Any, false);
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getScope()->decLoopNestedLevel();
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} else {
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if (m_exp3) m_exp3->inferAndCheck(ar, Type::Any, false);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// code generation functions
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void ForStatement::outputPHP(CodeGenerator &cg, AnalysisResultPtr ar) {
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cg_printf("for (");
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if (m_exp1) m_exp1->outputPHP(cg, ar);
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cg_printf("; ");
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if (m_exp2) m_exp2->outputPHP(cg, ar);
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cg_printf("; ");
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if (m_exp3) m_exp3->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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