Rosebud::Ast::File Class Reference

Description

An input file.

Definition at line 410 of file Ast.h.

#include <Rosebud/Ast.h>

Inheritance diagram for Rosebud::Ast::File:

Collaboration diagram for Rosebud::Ast::File:

Public Types
using	Ptr = FilePtr
	Shared-ownership pointer.
Public Types inherited from Rosebud::Ast::Node
using	Ptr = NodePtr
Public Types inherited from Sawyer::Tree::Vertex< Node >
using	UserBase = Node
	User's base class.
using	UserBasePtr = std::shared_ptr< UserBase >
	Pointer to user's base class.
using	TraversalEvent = Sawyer::Tree::TraversalEvent
	Alias for traversal events.

Public Member Functions
std::string	name ()
	Name of the input file.
TokenStream &	tokenStream ()
	Token stream for the file.
const Token	token (size_t lookAhead=0)
	Current or future token.
bool	matchesAny (size_t tokenPosition, const std::vector< std::string > &)
	Test whether a token matches any text.
bool	startsWith (const Token &, const char *)
	Test whether a token starts with a certain string.
std::string	content (const std::vector< Token > &, Expand)
	Input string for token list.
std::string	content (size_t begin, size_t end)
	Part of file.
void	emitContext (std::ostream &, const Token &first, const Token &locus, const Token &last)
	Emit the context for a diagnostic message.
std::string	lexeme (size_t position=0)
	Text associated with a token.
std::string	lexeme (const Token &)
	Text associated with a token.
bool	matches (const Token &, const char *)
	Test whether a token matches a string.
bool	matches (const Token &, const std::string &)
	Test whether a token matches a string.
bool	matches (size_t lookAhead, const char *)
	Test whether a token matches a string.
bool	matches (size_t lookAhead, const std::string &)
	Test whether a token matches a string.
bool	matches (const char *)
	Test whether a token matches a string.
bool	matches (const std::string &)
	Test whether a token matches a string.
Token	consume ()
	Consume tokens.
void	consume (size_t n)
	Consume tokens.
std::string	trimmedContent (size_t begin, size_t end, Token &outputToken)
	Input string for file region.
std::string	trimmedContent (size_t begin, size_t end, const Token &exclude, Token &outputToken)
	Input string for file region.
Public Member Functions inherited from Rosebud::Ast::Node
template<class T >
std::shared_ptr< T >	findAncestor ()
Public Member Functions inherited from Sawyer::Tree::Vertex< Node >
UserBasePtr	pointer ()
	Returns a shared pointer to this vertex.
std::shared_ptr< T >	isa ()
	Tests whether this object is a certain type.
auto	traverseReverse (const Visitor &visitor)
	Traverse in reverse direction from children to parents.
auto	traverse (const Visitor &visitor)
	Traverse in forward direction from parents to children.
auto	traversePre (const Visitor &visitor)
	Pre-order forward traversal.
auto	traversePost (const Visitor &visitor)
	Post-order forward traversal.
std::shared_ptr< T >	findFirstAncestor ()
	Traversal that finds the closest ancestor of type T or derived from T.
std::shared_ptr< T >	findLastAncestor ()
	Traversal that finds the farthest ancestor of type T or derived from T.
std::vector< std::shared_ptr< T > >	findDescendants ()
	Traversal that finds all the descendants of a particular type.
UserBasePtr	child (size_t i) const
	Returns the pointer for a child.
size_t	nChildren () const
	Returns the number of children.

Static Public Member Functions
static Ptr	instance (const std::string &name)
	Allocating constructor.

Public Attributes
EdgeVector< Class >	classes
	Non-null list of zero or more class definitions.
std::string	endText
	Text after the last class definition until the end of the file.
Token	endTextToken
	Token that encloses endText.
Public Attributes inherited from Sawyer::Tree::Vertex< Node >
ReverseEdge	parent
	Pointer to the parent in the tree.

Protected Member Functions
	File (const std::string &name)
	Constructor used only by derived classes.
Protected Member Functions inherited from Sawyer::Tree::Vertex< Node >
virtual void	destructorHelper ()

Member Typedef Documentation

Ptr

using Rosebud::Ast::File::Ptr = FilePtr

Shared-ownership pointer.

Definition at line 413 of file Ast.h.

Member Function Documentation

instance()

static Ptr Rosebud::Ast::File::instance ( const std::string &  name )

static

Allocating constructor.

The specified name must be the name of an existing text file that can be opened for reading.

tokenStream()

TokenStream & Rosebud::Ast::File::tokenStream

(

)

Token stream for the file.

These tokens are consumed by parsing, but the stream itself is left here as a data member because it still contains useful information such as the file name, the content of the file as text by which tokens can be converted to strings, and information about line and column numbers.

token()

const Token Rosebud::Ast::File::token

(

size_t

lookAhead = 0

)

Current or future token.

Returns the current token, or one of the future tokens.

lexeme() [1/2]

std::string Rosebud::Ast::File::lexeme

(

size_t

position = 0

)

Text associated with a token.

Returns the input text that caused the current or future token.

Attention: when testing whether a token matches some string, use one of the matching functions if possible instead of obtaining a string and comparing it to another string. The matching functions are more efficient.

lexeme() [2/2]

std::string Rosebud::Ast::File::lexeme

(

const Token &

)

Text associated with a token.

Returns the input text that caused the current or future token.

Attention: when testing whether a token matches some string, use one of the matching functions if possible instead of obtaining a string and comparing it to another string. The matching functions are more efficient.

matches() [1/6]

bool Rosebud::Ast::File::matches	(	const Token &	,
		const char *
	)

Test whether a token matches a string.

Returns true if the specified token matches a string. A token can be passed as an argument, or specified as a future token (lookAhead > 1), or the current token (no argument, or lookAhead == 0).

matches() [2/6]

bool Rosebud::Ast::File::matches	(	const Token &	,
		const std::string &
	)

Test whether a token matches a string.

Returns true if the specified token matches a string. A token can be passed as an argument, or specified as a future token (lookAhead > 1), or the current token (no argument, or lookAhead == 0).

matches() [3/6]

bool Rosebud::Ast::File::matches	(	size_t	lookAhead,
		const char *
	)

Test whether a token matches a string.

Returns true if the specified token matches a string. A token can be passed as an argument, or specified as a future token (lookAhead > 1), or the current token (no argument, or lookAhead == 0).

matches() [4/6]

bool Rosebud::Ast::File::matches	(	size_t	lookAhead,
		const std::string &
	)

Test whether a token matches a string.

Returns true if the specified token matches a string. A token can be passed as an argument, or specified as a future token (lookAhead > 1), or the current token (no argument, or lookAhead == 0).

matches() [5/6]

bool Rosebud::Ast::File::matches

(

const char *

)

Test whether a token matches a string.

Returns true if the specified token matches a string. A token can be passed as an argument, or specified as a future token (lookAhead > 1), or the current token (no argument, or lookAhead == 0).

matches() [6/6]

bool Rosebud::Ast::File::matches

(

const std::string &

)

Test whether a token matches a string.

Returns true if the specified token matches a string. A token can be passed as an argument, or specified as a future token (lookAhead > 1), or the current token (no argument, or lookAhead == 0).

matchesAny()

bool Rosebud::Ast::File::matchesAny	(	size_t	tokenPosition,
		const std::vector< std::string > &
	)

Test whether a token matches any text.

Returns true if the specified token matches any of the supplied strings.

startsWith()

bool Rosebud::Ast::File::startsWith	(	const Token &	,
		const char *
	)

Test whether a token starts with a certain string.

Returns true if the specified token begins with the specified characters.

consume() [1/2]

Token Rosebud::Ast::File::consume

(

)

Consume tokens.

Consume the current token, or n tokens. This is used during parsing, so by time a backend code generator is called all the tokens have presumably been consumed and the stream is sitting at the special EOF token. Consuming the EOF token is permissible, but has no effect.

consume() [2/2]

void Rosebud::Ast::File::consume

(

size_t

n

)

Consume tokens.

Consume the current token, or n tokens. This is used during parsing, so by time a backend code generator is called all the tokens have presumably been consumed and the stream is sitting at the special EOF token. Consuming the EOF token is permissible, but has no effect.

content() [1/2]

std::string Rosebud::Ast::File::content	(	const std::vector< Token > &	,
		Expand
	)

Input string for token list.

Returns a string for the specified tokens by concatenating the strings for the individual tokens. Depending on the second argument, the returned string includes either just the token text, the text between the start of the first token and the end of the last token, or the same plus the non-token text before the first token.

content() [2/2]

std::string Rosebud::Ast::File::content	(	size_t	begin,
		size_t	end
	)

Part of file.

Returns some text from the file from the starting byte offset (inclusive) to the ending byte offset (exclusive).

trimmedContent() [1/2]

std::string Rosebud::Ast::File::trimmedContent	(	size_t	begin,
		size_t	end,
		Token &	outputToken
	)

Input string for file region.

Returns the content of the file from character position begin (inclusive) to end (exclusive). If the end is less than or equal to begin, then an empty string is returned. The text is modified by removing trailing white space from each line, replacing consecutive blank lines with a single blank line, and removing leading and trailing blank lines. If an exclude token is specified, then its text is not included in the returned string.

trimmedContent() [2/2]

std::string Rosebud::Ast::File::trimmedContent	(	size_t	begin,
		size_t	end,
		const Token &	exclude,
		Token &	outputToken
	)

Input string for file region.

Returns the content of the file from character position begin (inclusive) to end (exclusive). If the end is less than or equal to begin, then an empty string is returned. The text is modified by removing trailing white space from each line, replacing consecutive blank lines with a single blank line, and removing leading and trailing blank lines. If an exclude token is specified, then its text is not included in the returned string.

emitContext()

void Rosebud::Ast::File::emitContext	(	std::ostream &	,
		const Token &	first,
		const Token &	locus,
		const Token &	last
	)

Emit the context for a diagnostic message.

The input lines corresponding to the tokens are emitted to standard error. The part of that input corresponding to the tokens is marked by underlining it, and the start of the locus token is marked in a special way.

Member Data Documentation

classes

EdgeVector<Class> Rosebud::Ast::File::classes

Non-null list of zero or more class definitions.

Definition at line 420 of file Ast.h.

endText

std::string Rosebud::Ast::File::endText

Text after the last class definition until the end of the file.

The text is modified by removing trailing white space from each line, replacing consecutive blank lines with a single blank line, and removing leading and trailing blank lines.

Definition at line 426 of file Ast.h.

endTextToken

Token Rosebud::Ast::File::endTextToken

Token that encloses endText.

This generated token of type TOK_OTHER encloses the file content that produced endText.

Definition at line 431 of file Ast.h.

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

• Ast.h