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values

Contents

• Chapter 1: Configuration and Control
  • Values Module - Setting up the use of this module.
  • Meaning Codes (values) - The set of meaning codes used when Inform runs the excerpt parser.
• Chapter 2: Specifications
  • Specifications - To create, manage and compare specifications.
  • Rvalues - Specific values which can be stored or used at run-time.
  • Lvalues - Storage locations into which rvalues can be put at run-time.
  • Conditions - States of being which at any given point, at run-time, might be true or false.
  • Descriptions - Descriptions such as "open door" or "number which is greater than 8" which may or may not be true of any given rvalue at run-time.
• Chapter 3: Literals
  • Parsing Literals - To decide if an excerpt of text is a value referred to notationally rather than by name.
  • Literal Patterns (values) - To manage the possible notations with which literal values can be written.
  • Literal Real Numbers - To parse real numbers written as decimal expansions, or in scientific or engineering notation.
  • Times of Day - To make a built-in kind of value for times of day, such as "11:22 AM".
  • Unicode Literals - To manage the names assigned to Unicode character values.
  • Transcoding Text - To change the escape-character conventions used in text streams.
  • Literal Lists - Parsing and vetting the kinds of literal lists written in braces.
• Chapter 4: The S-Parser
  • Enter the S-Parser - The top-level nonterminals of the S-parser, which turns text into specifications.
  • Constants and Descriptions - To parse noun phrases in constant contexts, which specify values either explicitly or by describing them more or less vaguely.
  • Type Expressions and Values - To parse two forms of noun: a noun phrase in a sentence, and a description of what text can be written in a given situation.
  • Verbal and Relative Clauses - To break down an excerpt into NP and VP-like clauses, perhaps with a primary verb (to make a sentence), perhaps only a relative clause (to make a more complex NP).
  • Conditions and Phrases - To parse the text of To... phrases, say phrases and conditions.
  • Invocation Lists - Invocation lists are lists of alternate readings of the same wording to invoke a phrase.
  • Invocations - Invocations are to phrases what function calls are to functions, though they do not always compile that way.
  • Parse Invocations - To register phrases with the excerpt parser, and to provide the excerpt parser with help in putting invocations together.
• Chapter 5: Type Checking
  • Dash - The part of Inform most nearly like a typechecker in a conventional compiler.