138 lines
6.0 KiB
Factor
138 lines
6.0 KiB
Factor
USING: help.markup help.syntax math models strings sequences ;
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IN: documents
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HELP: +col
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{ $values { "loc" "a pair of integers" } { "n" integer } { "newloc" "a pair of integers" } }
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{ $description "Adds an integer to the column number of a line/column pair." } ;
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{ +col +line =col =line } related-words
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HELP: +line
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{ $values { "loc" "a pair of integers" } { "n" integer } { "newloc" "a pair of integers" } }
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{ $description "Adds an integer to the line number of a line/column pair." } ;
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HELP: =col
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{ $values { "n" integer } { "loc" "a pair of integers" } { "newloc" "a pair of integers" } }
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{ $description "Sets the column number of a line/column pair." } ;
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HELP: =line
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{ $values { "n" integer } { "loc" "a pair of integers" } { "newloc" "a pair of integers" } }
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{ $description "Sets the line number of a line/column pair." } ;
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HELP: lines-equal?
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{ $values { "loc1" "a pair of integers" } { "loc2" "a pair of integers" } { "?" "a boolean" } }
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{ $description "Tests if both line/column pairs have the same line number." } ;
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HELP: document
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{ $class-description "A document is a " { $link model } " containing editable text, stored as an array of lines. Documents are created by calling " { $link <document> } ". Documents can be edited with editor gadgets; see " { $vocab-link "ui.gadgets.editors" } "." } ;
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HELP: <document>
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{ $values { "document" "a new " { $link document } } }
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{ $description "Creates a new, empty " { $link document } "." } ;
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HELP: doc-line
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{ $values { "n" "a non-negative integer" } { "document" document } { "string" string } }
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{ $description "Outputs the " { $snippet "n" } "th line of the document." }
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{ $errors "Throws an error if " { $snippet "n" } " is out of bounds." } ;
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HELP: doc-lines
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{ $values { "from" "a non-negative integer" } { "to" "a non-negative integer" } { "document" document } { "slice" slice } }
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{ $description "Outputs a range of lines from the document." }
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{ $notes "The range is created by calling " { $link <slice> } "." }
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{ $errors "Throws an error if " { $snippet "from" } " or " { $snippet "to" } " is out of bounds." } ;
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HELP: each-line
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{ $values { "from" "a non-negative integer" } { "to" "a non-negative integer" } { "quot" { $quotation "( string -- )" } } }
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{ $description "Applies the quotation to each line in the range." }
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{ $notes "The range is created by calling " { $link <slice> } "." }
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{ $errors "Throws an error if " { $snippet "from" } " or " { $snippet "to" } " is out of bounds." } ;
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HELP: doc-range
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{ $values { "from" "a pair of integers" } { "to" "a pair of integers" } { "document" document } { "string" "a new " { $link string } } }
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{ $description "Outputs all text in between two line/column number pairs. Lines are separated by " { $snippet "\\n" } "." }
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{ $errors "Throws an error if " { $snippet "from" } " or " { $snippet "to" } " is out of bounds." } ;
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HELP: set-doc-range
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{ $values { "string" string } { "from" "a pair of integers" } { "to" "a pair of integers" } { "document" document } }
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{ $description "Replaces all text between two line/column number pairs with " { $snippet "string" } ". The string may use either " { $snippet "\\n" } ", " { $snippet "\\r\\n" } " or " { $snippet "\\r" } " line separators." }
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{ $errors "Throws an error if " { $snippet "from" } " or " { $snippet "to" } " is out of bounds." }
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{ $side-effects "document" } ;
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HELP: remove-doc-range
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{ $values { "from" "a pair of integers" } { "to" "a pair of integers" } { "document" document } }
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{ $description "Removes all text between two line/column number pairs." }
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{ $errors "Throws an error if " { $snippet "from" } " or " { $snippet "to" } " is out of bounds." }
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{ $side-effects "document" } ;
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HELP: validate-loc
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{ $values { "loc" "a pair of integers" } { "document" document } { "newloc" "a pair of integers" } }
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{ $description "Ensures that the line and column numbers in " { $snippet "loc" } " are valid, clamping them to the permitted range if they are not." } ;
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HELP: line-end
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{ $values { "line#" "a non-negative integer" } { "document" document } { "loc" "a pair of integers" } }
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{ $description "Outputs the location where " { $snippet "line#" } " ends." }
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{ $errors "Throws an error if " { $snippet "line#" } " is out of bounds." } ;
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HELP: doc-end
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{ $values { "document" document } { "loc" "a pair of integers" } }
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{ $description "Outputs the location of the end of the document." } ;
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HELP: doc-string
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{ $values { "document" document } { "str" "a new " { $link string } } }
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{ $description "Outputs the contents of the document as a string. Lines are separated by " { $snippet "\\n" } "." } ;
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HELP: set-doc-string
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{ $values { "string" string } { "document" document } }
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{ $description "Sets the contents of the document to a string, which may use either " { $snippet "\\n" } ", " { $snippet "\\r\\n" } " or " { $snippet "\\r" } " line separators." }
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{ $side-effects "document" } ;
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HELP: clear-doc
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{ $values { "document" document } }
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{ $description "Removes all text from the document." }
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{ $side-effects "document" } ;
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ARTICLE: "documents" "Documents"
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"The " { $vocab-link "documents" } " vocabulary implements " { $emphasis "documents" } ", which are models storing a passage of text as a sequence of lines. Operations are defined for operating on subranges of the text, and " { $link "ui.gadgets.editors" } " can display these models."
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{ $subsections
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document
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<document>
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}
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"Getting and setting the contents of the entire document:"
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{ $subsections
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doc-string
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set-doc-string
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clear-doc
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}
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"Getting and setting subranges:"
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{ $subsections
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doc-line
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doc-lines
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doc-range
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set-doc-range
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remove-doc-range
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}
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"A combinator:"
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{ $subsections each-line }
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"More info:"
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{ $subsections
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"document-locs"
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"documents.elements"
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}
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{ $see-also "ui.gadgets.editors" } ;
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ARTICLE: "document-locs" "Document locations"
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"Locations in the document are represented as a line/column number pair, with both indices being zero-based. There are some words for manipulating locations:"
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{ $subsections
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+col
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+line
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=col
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=line
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}
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"Miscellaneous words for working with locations:"
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{ $subsections
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lines-equal?
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validate-loc
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} ;
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ABOUT: "documents"
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