DIRECTORY Atom, ViewerClasses, Parser, Rope; HerculesParseViewer: DEFINITIONS = BEGIN ROPE: TYPE = Rope.ROPE; PViewer: TYPE = RECORD [oldContents: LIST OF ROPE _ NIL, -- contents of nodes after last parse/unparse of viewer viewer: ViewerClasses.Viewer]; NewViewer: PUBLIC PROC RETURNS [pv: PViewer]; -- Creates a new empty and unnamed editable viewer for Juno procedures. AddText: PUBLIC PROC[text: ROPE, pv: PViewer]; -- Adds a new last node to the viewer, with given contents. -- does not parse the viewer or alter pw.content. The idea is that the text -- will have fields to be filled in by the user. AddExpr: PUBLIC PROC[expr: Se, viewer: PViewer]; -- unparses the expression, adds the text, and repaints the viewer. ParseViewer: PUBLIC PROC [pv: PViewer] RETURNS [exprs: LIST OF Se, error: BOOL, nv: PViewer]; -- Parses each node of pv that has been edited since last parse, -- according to the Juno syntax, and checks if the resulting tree -- is a valid definition of the form ( ), where -- evaluates to a value (generally a FunVal). -- Also unparses each expresssion and puts it back into the viewer. -- In case of parsing/syntax error, stops the process and -- returns error = TRUE. The offending expression will be unparsed up to the -- error, and the rest of the original node contents will be appended to it. -- Will NOT re-parse nodes that have not been edited since last parse of this file. SetFile: PUBLIC PROC [v: ViewerfileName: ROPE]; -- Loads specified file into viewer v. END. خ HerculesParseViewer Last Edited by: Stolfi, February 22, 1984 12:16 pm Copied from OldParseWindow Coded by GNelson (?) September 6, 1982 12:25 am Last Edited by: Gnelson, October 11, 1983 9:29 pm ‌تHکڑœ™ڑœ3™3ڑœ™Jڑœ0™0Jڑœ1™1———Jڑœدk œ+ک5Jڑœ‌ک!Jڑœ‌کJڑœ‌œ‌œ‌œکJڑ œ ‌œ‌œ‌œ‌œ‌œ‌œ\ک–Jڑ œدn œ‌œ‌œ‌œدcHکyJڑ œ‍œ‌œ‌œ‌œںؤکôJڑœ‍œ‌œ‌œںEکwJڑœ‍œ‌œ‌œ‌œ ‌œ‌œ‌œں‰œںKœں1œںDœں:œںQœںPœںVکيJڑœ‍œ‌œ‌œ‌œں$ذcrںکZJڑœ‌œک—…—J`