mwilliams
120 linhas
3.7 KiB
C++
120 linhas
3.7 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010- 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 <compiler/statement/use_trait_statement.h>
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#include <compiler/statement/statement_list.h>
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#include <compiler/statement/class_statement.h>
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#include <compiler/statement/method_statement.h>
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#include <compiler/expression/expression_list.h>
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#include <compiler/analysis/class_scope.h>
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using namespace HPHP;
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///////////////////////////////////////////////////////////////////////////////
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// constructors/destructors
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UseTraitStatement::UseTraitStatement
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(STATEMENT_CONSTRUCTOR_PARAMETERS, ExpressionListPtr exp,
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StatementListPtr stmt)
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: Statement(STATEMENT_CONSTRUCTOR_PARAMETER_VALUES(UseTraitStatement)),
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m_exp(exp), m_stmt(stmt) {
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}
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StatementPtr UseTraitStatement::clone() {
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UseTraitStatementPtr new_stmt(new UseTraitStatement(*this));
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new_stmt->m_exp = Clone(m_exp);
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new_stmt->m_stmt = Clone(m_stmt);
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return new_stmt;
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}
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///////////////////////////////////////////////////////////////////////////////
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// parser functions
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void UseTraitStatement::onParseRecur(AnalysisResultConstPtr ar,
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ClassScopePtr scope) {
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if (scope->isInterface()) {
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parseTimeFatal(Compiler::InvalidTraitStatement,
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"Interfaces cannot use traits");
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}
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vector<string> usedTraits;
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getUsedTraitNames(usedTraits);
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for (auto &t : usedTraits) {
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ar->parseOnDemandByClass(Util::toLower(t));
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}
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scope->addUsedTraits(usedTraits);
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}
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///////////////////////////////////////////////////////////////////////////////
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// static analysis functions
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void UseTraitStatement::analyzeProgram(AnalysisResultPtr ar) {
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// Analyze children
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for (int i = 0; i < m_exp->getCount(); i++) {
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(*m_exp)[i]->analyzeProgram(ar);
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}
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if (m_stmt) m_stmt->analyzeProgram(ar);
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// At the final pass, collect info & insert trait into target class
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if (ar->getPhase() != AnalysisResult::AnalyzeAll) return;
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}
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ConstructPtr UseTraitStatement::getNthKid(int n) const {
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switch (n) {
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case 0:
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return m_exp;
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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 UseTraitStatement::getKidCount() const {
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return 2;
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}
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void UseTraitStatement::setNthKid(int n, ConstructPtr cp) {
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switch (n) {
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case 0:
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m_exp = boost::dynamic_pointer_cast<ExpressionList>(cp);
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break;
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case 1:
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m_stmt = boost::dynamic_pointer_cast<StatementList>(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 UseTraitStatement::inferTypes(AnalysisResultPtr ar) {
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}
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///////////////////////////////////////////////////////////////////////////////
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// code generation functions
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void UseTraitStatement::outputPHP(CodeGenerator &cg, AnalysisResultPtr ar) {
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cg_printf("use ");
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m_exp->outputPHP(cg, ar);
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cg_printf(" {\n");
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m_stmt->outputPHP(cg, ar);
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cg_printf("}\n");
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}
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