SkSL::CountReturnsWithLimit Class Reference

Inheritance diagram for SkSL::CountReturnsWithLimit:

Public Types
using	INHERITED = ProgramVisitor

Public Member Functions
	CountReturnsWithLimit (const FunctionDefinition &funcDef, int limit)
bool	visitExpression (const Expression &expr) override
bool	visitStatement (const Statement &stmt) override
Public Member Functions inherited from SkSL::ProgramVisitor
bool	visit (const Program &program)
Public Member Functions inherited from SkSL::TProgramVisitor< ProgramVisitorTypes >
virtual	~TProgramVisitor ()=default

Public Attributes
int	fNumReturns = 0
int	fDeepestReturn = 0
int	fLimit = 0
int	fScopedBlockDepth = 0
bool	fVariablesInBlocks = false

Additional Inherited Members
Protected Member Functions inherited from SkSL::TProgramVisitor< ProgramVisitorTypes >
virtual bool	visitExpression (typename T::Expression &expression)
virtual bool	visitStatement (typename T::Statement &statement)
virtual bool	visitProgramElement (typename T::ProgramElement &programElement)
virtual bool	visitExpressionPtr (typename T::UniquePtrExpression &expr)=0
virtual bool	visitStatementPtr (typename T::UniquePtrStatement &stmt)=0

Detailed Description

Definition at line 65 of file SkSLGetReturnComplexity.cpp.

Member Typedef Documentation

INHERITED

using SkSL::CountReturnsWithLimit::INHERITED = ProgramVisitor

Definition at line 113 of file SkSLGetReturnComplexity.cpp.

Constructor & Destructor Documentation

CountReturnsWithLimit()

SkSL::CountReturnsWithLimit::CountReturnsWithLimit ( const FunctionDefinition &  funcDef, int  limit  )

inline

Definition at line 67 of file SkSLGetReturnComplexity.cpp.

                                                                        : fLimit(limit) {
        this->visitProgramElement(funcDef);
    }

Member Function Documentation

visitExpression()

bool SkSL::CountReturnsWithLimit::visitExpression ( const Expression &  expr )

inlineoverride

Definition at line 71 of file SkSLGetReturnComplexity.cpp.

                                                          {
        // Do not recurse into expressions.
        return false;
    }

visitStatement()

bool SkSL::CountReturnsWithLimit::visitStatement ( const Statement &  stmt )

inlineoverride

Definition at line 76 of file SkSLGetReturnComplexity.cpp.

                                                        {
        switch (stmt.kind()) {
            case Statement::Kind::kReturn: {
                ++fNumReturns;
                fDeepestReturn = std::max(fDeepestReturn, fScopedBlockDepth);
                return (fNumReturns >= fLimit) || INHERITED::visitStatement(stmt);
            }
            case Statement::Kind::kVarDeclaration: {
                if (fScopedBlockDepth > 1) {
                    fVariablesInBlocks = true;
                }
                return INHERITED::visitStatement(stmt);
            }
            case Statement::Kind::kBlock: {
                int depthIncrement = stmt.as<Block>().isScope() ? 1 : 0;
                fScopedBlockDepth += depthIncrement;
                bool result = INHERITED::visitStatement(stmt);
                fScopedBlockDepth -= depthIncrement;
                if (fNumReturns == 0 && fScopedBlockDepth <= 1) {
                    // If closing this block puts us back at the top level, and we haven't
                    // encountered any return statements yet, any vardecls we may have encountered
                    // up until this point can be ignored. They are out of scope now, and they were
                    // never used in a return statement.
                    fVariablesInBlocks = false;
                }
                return result;
            }
            default:
                return INHERITED::visitStatement(stmt);
        }
    }

Member Data Documentation

fDeepestReturn

int SkSL::CountReturnsWithLimit::fDeepestReturn = 0

Definition at line 109 of file SkSLGetReturnComplexity.cpp.

fLimit

int SkSL::CountReturnsWithLimit::fLimit = 0

Definition at line 110 of file SkSLGetReturnComplexity.cpp.

fNumReturns

int SkSL::CountReturnsWithLimit::fNumReturns = 0

Definition at line 108 of file SkSLGetReturnComplexity.cpp.

fScopedBlockDepth

int SkSL::CountReturnsWithLimit::fScopedBlockDepth = 0

Definition at line 111 of file SkSLGetReturnComplexity.cpp.

fVariablesInBlocks

bool SkSL::CountReturnsWithLimit::fVariablesInBlocks = false

Definition at line 112 of file SkSLGetReturnComplexity.cpp.

---

The documentation for this class was generated from the following file:

• third_party/skia/src/sksl/analysis/SkSLGetReturnComplexity.cpp