An Env which contains a mapping of variables to values as well as a pointer to a parent scope. More...

#include <eval_env.h>

Inheritance diagram for BindingEnv:

Public Member Functions
void	AddBinding (const string &key, const string &val)

	BindingEnv ()

	BindingEnv (Env *parent)

virtual string	LookupVariable (const string &var)

string	LookupWithFallback (const string &var, const EvalString eval, Env env)
	This is tricky. More...

virtual	~BindingEnv ()

Private Attributes
map< string, string >	bindings_

Env *	parent_

Detailed Description

An Env which contains a mapping of variables to values as well as a pointer to a parent scope.

Definition at line 35 of file eval_env.h.

Constructor & Destructor Documentation

BindingEnv::BindingEnv ( )

inline

Definition at line 36 of file eval_env.h.

BindingEnv::BindingEnv ( Env * parent )

inlineexplicit

Definition at line 37 of file eval_env.h.

virtual BindingEnv::~BindingEnv ( )

inlinevirtual

Definition at line 39 of file eval_env.h.

Member Function Documentation

void BindingEnv::AddBinding	(	const string &	key,
		const string &	val
	)

Definition at line 26 of file eval_env.cc.

References bindings_.

Referenced by ManifestParser::Parse(), and ManifestParser::ParseEdge().

string BindingEnv::LookupVariable ( const string & var )

virtual

Implements Env.

Definition at line 17 of file eval_env.cc.

References bindings_, Env::LookupVariable(), and parent_.

string BindingEnv::LookupWithFallback	(	const string &	var,
		const EvalString *	eval,
		Env *	env
	)

This is tricky.

Edges want lookup scope to go in this order: 1) value set on edge itself (edge_->env_) 2) value set on rule, with expansion in the edge's scope 3) value set on enclosing scope of edge (edge_->env_->parent_) This function takes as parameters the necessary info to do (2).

Definition at line 30 of file eval_env.cc.

References bindings_, EvalString::Evaluate(), Env::LookupVariable(), and parent_.

Referenced by EdgeEnv::LookupVariable().