Hypertable::ClusterDefinitionFile::TranslatorVariable Class Reference

Translates a variable definition. More...

#include <TranslatorVariable.h>

Inheritance diagram for Hypertable::ClusterDefinitionFile::TranslatorVariable:

Collaboration diagram for Hypertable::ClusterDefinitionFile::TranslatorVariable:

Public Member Functions
	TranslatorVariable (const string &fname, size_t lineno, const string &text)
	Constructor. More...
const string	translate (TranslationContext &context) override
	Translates a variable definition. More...

Private Attributes
string	m_fname
	Source file name containing input text. More...
size_t	m_lineno
	Starting offset within m_fname of input text. More...
string	m_text
	Text of variable definition. More...

Detailed Description

Translates a variable definition.

Definition at line 43 of file TranslatorVariable.h.

Constructor & Destructor Documentation

Hypertable::ClusterDefinitionFile::TranslatorVariable::TranslatorVariable ( const string &  fname, size_t  lineno, const string &  text  )

inline

Constructor.

Parameters

fname	Filename of source file containing variable definition
lineno	Line number within source file of variable definition text
text	Text of variable definition

Definition at line 50 of file TranslatorVariable.h.

Member Function Documentation

const string TranslatorVariable::translate ( TranslationContext &  context )

overridevirtual

Translates a variable definition.

This method translates a global variable definition of the form:

CONFIG_FILE="/root/hypertable.cfg"

Into the following

CONFIG_FILE=${CONFIG_FILE:-"/root/hypertable.cfg"}

This allow variables to be overriden by environment variables. As a side effect, it inserts the variable name into the context.symbols map, mapping it to the variable value.

Parameters

context

Context object containing symbol tables

Returns

Translated variable definition statement

Implements Hypertable::ClusterDefinitionFile::Translator.

Definition at line 42 of file TranslatorVariable.cc.

Member Data Documentation

string Hypertable::ClusterDefinitionFile::TranslatorVariable::m_fname

private

Source file name containing input text.

Definition at line 71 of file TranslatorVariable.h.

size_t Hypertable::ClusterDefinitionFile::TranslatorVariable::m_lineno

private

Starting offset within m_fname of input text.

Definition at line 73 of file TranslatorVariable.h.

string Hypertable::ClusterDefinitionFile::TranslatorVariable::m_text

private

Text of variable definition.

Definition at line 75 of file TranslatorVariable.h.

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

• /home/doug/src/hypertable/src/cc/Common/ClusterDefinitionFile/TranslatorVariable.h
• /home/doug/src/hypertable/src/cc/Common/ClusterDefinitionFile/TranslatorVariable.cc