Module conch_runtime::eval

A module for evaluating arbitrary shell components such as words, parameter subsitutions, redirections, and others.

Modules

ast_impl

This module defines various WordEval implementations on AST types defined by the conch-parser crate.

Structs

Alternative	A future representing a Alternative parameter substitution evaluation.
Assign	A future representing a Assign parameter substitution evaluation.
Assignment	A future representing a word evaluation without doing field and pathname expansions.
Concat	A future adapter which concatenates multiple words together.
DoubleQuoted	A future representing the evaluation of a double quoted list of words.
Error	A future representing a Error parameter substitution evaluation.
EvalDefault	A future representing a Default parameter substitution evaluation.
EvalRedirectOrCmdWord	A future which will evaluate a series of redirections and shell words.
EvalRedirectOrVarAssig	[ Deprecated ] A future which will evaluate a series of redirections and variable assignments.
EvalRedirectOrVarAssig2	A future which will evaluate a series of redirections and variable assignments.
Pattern	A future representing a word evaluation as a pattern.
Redirect	A future representing the evaluation of a redirect.
RemoveLargestPrefix	A future representing a RemoveLargestPrefix parameter substitution evaluation.
RemoveLargestSuffix	A future representing a RemoveLargestSuffix parameter substitution evaluation.
RemoveSmallestPrefix	A future representing a RemoveSmallestPrefix parameter substitution evaluation.
RemoveSmallestSuffix	A future representing a RemoveSmallestSuffix parameter substitution evaluation.
Split	A future representing a word evaluation and conditionally splitting it afterwards.
WordEvalConfig	A config object for customizing WordEval evaluations.

Enums

EvalRedirectOrCmdWordError	An error which may arise when evaluating a redirect or a shell word.
EvalRedirectOrVarAssigError	An error which may arise when evaluating a redirect or a variable assignment.
Fields	Represents the types of fields that may result from evaluating a word. It is important to maintain such distinctions because evaluating parameters such as $@ and $* have different behaviors in different contexts.
RedirectAction	Indicates what changes should be made to the environment as a result of a successful Redirect evaluation.
RedirectOrCmdWord	Represents a redirect or a command word.
RedirectOrVarAssig	Represents a redirect or a defined environment variable at the start of a command.
TildeExpansion	An enum representing how tildes (~) are expanded.

Traits

ArithEval	A trait for evaluating arithmetic expansions.
ParamEval	A trait for evaluating parameters.
RedirectEval	A trait for evaluating file descriptor redirections.
WordEval	A trait for evaluating shell words with various rules for expansion.

Functions

alternative	Constructs future representing a Alternative parameter substitution evaluation.
assign	Constructs future representing a Assign parameter substitution evaluation.
concat	Creates a future adapter which concatenates multiple words together.
default	Constructs future representing a Default parameter substitution evaluation.
double_quoted	Evaluates a list of words as if they were double quoted.
error	Constructs future representing a Error parameter substitution evaluation.
eval_redirects_or_cmd_words	Create a future which will evaluate a series of redirections and shell words.
eval_redirects_or_cmd_words_with_restorer	Create a future which will evaluate a series of redirections and shell words, and supply a RedirectEnvRestorer to use.
eval_redirects_or_var_assignments	[ Deprecated ] Create a a future which will evaluate a series of redirections and variable assignments.
eval_redirects_or_var_assignments_with_restorer	[ Deprecated ] Create a a future which will evaluate a series of redirections and variable assignments.
eval_redirects_or_var_assignments_with_restorers	Create a a future which will evaluate a series of redirections and variable assignments.
len	Evaluates a parameter and returns the length of the result.
redirect_append	Evaluate a redirect which will open a file in append mode.
redirect_clobber	Evaluate a redirect which will open a file for writing, regardless if the noclobber option is set.
redirect_dup_read	Evaluate a redirect which will either duplicate a readable file descriptor as specified by src_fd into dst_fd, or close dst_fd if src_fd evaluates to -.
redirect_dup_write	Evaluate a redirect which will either duplicate a writeable file descriptor as specified by src_fd into dst_fd, or close dst_fd if src_fd evaluates to -.
redirect_heredoc	Evaluate a redirect which write the body of a here-document into fd.
redirect_read	Evaluate a redirect which will open a file for reading.
redirect_readwrite	Evaluate a redirect which will open a file for reading and writing.
redirect_write	Evaluate a redirect which will open a file for writing, failing if the noclobber option is set.
remove_largest_prefix	Constructs future representing a RemoveLargestPrefix parameter substitution evaluation.
remove_largest_suffix	Constructs future representing a RemoveLargestSuffix parameter substitution evaluation.
remove_smallest_prefix	Constructs future representing a RemoveSmallestPrefix parameter substitution evaluation.
remove_smallest_suffix	Constructs future representing a RemoveSmallestSuffix parameter substitution evaluation.
split	Creates a future adapter that will conditionally split the resulting fields of the inner future.