infix2postfix::preprocessor::Evaluator Class Reference

Public Member Functions
	Evaluator (const std::vector< Token > &tokens)
std::variant< int64_t, double >	evaluate ()
std::optional< std::variant< int64_t, double > >	tryEvaluate ()

Static Public Member Functions
static bool	is_truthy (const std::variant< int64_t, double > &val)
static std::string	toString (const std::variant< int64_t, double > &val)

Detailed Description

Definition at line 565 of file Preprocessor.cpp.

Constructor & Destructor Documentation

Evaluator()

infix2postfix::preprocessor::Evaluator::Evaluator ( const std::vector< Token > & tokens )

inlineexplicit

Definition at line 567 of file Preprocessor.cpp.

        : tokens(tokens), stream(tokens) {}

Member Function Documentation

evaluate()

std::variant< int64_t, double > infix2postfix::preprocessor::Evaluator::evaluate ( )

inline

Definition at line 570 of file Preprocessor.cpp.

                                           {
        pos = 0;
        skipWhitespace();
 
        if (is_eof()) {
            throw std::runtime_error("Cannot evaluate an empty expression");
        }
 
        Value result = parseConditional();
        skipWhitespace();
 
        if (!is_eof()) {
            throw std::runtime_error("Unexpected tokens at end of expression");
        }
 
        return result.val;
    }

Referenced by tryEvaluate().

is_truthy()

bool infix2postfix::preprocessor::Evaluator::is_truthy ( const std::variant< int64_t, double > & val )

inlinestatic

Definition at line 598 of file Preprocessor.cpp.

                                                                  {
        return Value(val).is_truthy();
    }

References infix2postfix::Value.

toString()

std::string infix2postfix::preprocessor::Evaluator::toString ( const std::variant< int64_t, double > & val )

inlinestatic

Definition at line 602 of file Preprocessor.cpp.

                                                                      {
        return Value(val).to_string();
    }

References infix2postfix::Value.

tryEvaluate()

std::optional< std::variant< int64_t, double > > infix2postfix::preprocessor::Evaluator::tryEvaluate ( )

inline

Definition at line 588 of file Preprocessor.cpp.

                                                           {
        try {
            return evaluate();
        } catch (const PreprocessorError&) {
            throw;
        } catch (const std::runtime_error&) {
            return std::nullopt;
        }
    }

References evaluate().

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

• llvmexpr/frontend/infix2postfix/Preprocessor.cpp