100 lines
6.1 KiB
Factor
Executable File
100 lines
6.1 KiB
Factor
Executable File
USING: vocabs help.markup help.syntax words strings io ;
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IN: vocabs.loader
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ARTICLE: "vocabs.roots" "Vocabulary roots"
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"The vocabulary loader searches for it in one of the root directories:"
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{ $subsection vocab-roots }
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"The default set of roots includes the following directories in the Factor source directory:"
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{ $list
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{ { $snippet "core" } " - essential system vocabularies such as " { $vocab-link "parser" } " and " { $vocab-link "sequences" } ". The vocabularies in this root constitute the boot image; see " { $link "bootstrap.image" } "." }
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{ { $snippet "basis" } " - useful libraries and tools, such as " { $vocab-link "compiler" } ", " { $vocab-link "ui" } ", " { $vocab-link "calendar" } ", and so on." }
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{ { $snippet "extra" } " - additional contributed libraries." }
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{ { $snippet "work" } " - a root for vocabularies which are not intended to be contributed back to Factor." }
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}
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"Your own vocabularies should go into " { $snippet "extra" } " or " { $snippet "work" } ", depending on whether or not you intend to contribute them back to the Factor project. If you wish to work on vocabularies outside of the Factor source directory, create a " { $snippet "~/.factor-rc" } " file like the following,"
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{ $code
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"USING: namespaces sequences vocabs.loader ;"
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"\"/home/jane/sources/\" vocab-roots get push"
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}
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"See " { $link "rc-files" } " for details." ;
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ARTICLE: "vocabs.loader" "Vocabulary loader"
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"The vocabulary loader is defined in the " { $vocab-link "vocabs.loader" } " vocabulary."
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$nl
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"Vocabularies are searched for in vocabulary roots."
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{ $subsection "vocabs.roots" }
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"Vocabulary names map directly to source files. A vocabulary named " { $snippet "foo.bar" } " must be defined in a " { $snippet "bar" } " directory nested inside a " { $snippet "foo" } " directory of a vocabulary root. Any level of vocabulary nesting is permitted."
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$nl
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"The vocabulary directory - " { $snippet "bar" } " in our example - can contain the following files; the first is required while the rest are optional:"
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{ $list
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{ { $snippet "foo/bar/bar.factor" } " - the source file, defines words in the " { $snippet "foo.bar" } " vocabulary" }
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{ { $snippet "foo/bar/bar-docs.factor" } " - documentation, see " { $link "writing-help" } }
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{ { $snippet "foo/bar/bar-tests.factor" } " - unit tests, see " { $link "tools.test" } }
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{ { $snippet "foo/bar/summary.txt" } " - a one-line description" }
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{ { $snippet "foo/bar/tags.txt" } " - a whitespace-separated list of tags which classify the vocabulary" }
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}
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"While " { $link POSTPONE: USE: } " and " { $link POSTPONE: USING: } " load vocabularies which have not been loaded before adding them to the search path, it is also possible to load a vocabulary without adding it to the search path:"
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{ $subsection require }
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"Forcing a reload of a vocabulary, even if it has already been loaded:"
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{ $subsection reload }
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"Application vocabularies can define a main entry point, giving the user a convenient way to run the application:"
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{ $subsection POSTPONE: MAIN: }
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{ $subsection run }
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{ $see-also "vocabularies" "parser-files" "source-files" } ;
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ABOUT: "vocabs.loader"
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HELP: load-vocab
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{ $values { "name" "a string" } { "vocab" "a hashtable or " { $link f } } }
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{ $description "Outputs a named vocabulary. If the vocabulary does not exist, throws a restartable " { $link no-vocab } " error. If the user invokes the restart, this word outputs " { $link f } "." }
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{ $error-description "Thrown by " { $link POSTPONE: USE: } " and " { $link POSTPONE: USING: } " when a given vocabulary does not exist. Vocabularies must be created by " { $link POSTPONE: IN: } " before being used." } ;
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HELP: vocab-main
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{ $values { "vocab" "a vocabulary specifier" } { "main" word } }
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{ $description "Outputs the main entry point for a vocabulary. The entry point can be executed with " { $link run } " and set with " { $link POSTPONE: MAIN: } "." } ;
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HELP: vocab-roots
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{ $var-description "A sequence of pathname strings to search for vocabularies." } ;
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HELP: find-vocab-root
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{ $values { "vocab" "a vocabulary specifier" } { "path/f" "a pathname string" } }
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{ $description "Searches for a vocabulary in the vocabulary roots." } ;
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HELP: no-vocab
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{ $values { "name" "a vocabulary name" } }
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{ $description "Throws a " { $link no-vocab } "." }
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{ $error-description "Thrown when a " { $link POSTPONE: USE: } " or " { $link POSTPONE: USING: } " form refers to a non-existent vocabulary." } ;
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HELP: load-help?
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{ $var-description "If set to a true value, documentation will be automatically loaded when vocabularies are loaded. This variable is usually on, except when Factor has been bootstrapped without the help system." } ;
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HELP: load-source
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{ $values { "vocab" "a vocabulary specifier" } }
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{ $description "Loads a vocabulary's source code." } ;
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HELP: load-docs
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{ $values { "vocab" "a vocabulary specifier" } }
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{ $description "If " { $link load-help? } " is on, loads a vocabulary's documentation." } ;
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HELP: reload
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{ $values { "name" "a vocabulary name" } }
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{ $description "Loads it's source code and documentation." }
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{ $errors "Throws a " { $link no-vocab } " error if the vocabulary does not exist on disk." } ;
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HELP: require
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{ $values { "vocab" "a vocabulary specifier" } }
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{ $description "Loads a vocabulary if it has not already been loaded." }
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{ $notes "To unconditionally reload a vocabulary, use " { $link reload } ". To reload changed source files only, use the words in " { $link "tools.vocabs" } "." } ;
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HELP: run
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{ $values { "vocab" "a vocabulary specifier" } }
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{ $description "Runs a vocabulary's main entry point. The main entry point is set with the " { $link POSTPONE: MAIN: } " parsing word." } ;
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HELP: vocab-source-path
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{ $values { "vocab" "a vocabulary specifier" } { "path/f" "a pathname string or " { $link f } } }
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{ $description "Outputs a pathname where source code for " { $snippet "vocab" } " might be found. Outputs " { $link f } " if the vocabulary does not have a directory on disk." } ;
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HELP: vocab-docs-path
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{ $values { "vocab" "a vocabulary specifier" } { "path/f" "a pathname string or " { $link f } } }
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{ $description "Outputs a pathname where the documentation for " { $snippet "vocab" } " might be found. Outputs " { $link f } " if the vocabulary does not have a directory on disk." } ;
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