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syntax

Contents

• Chapter 1 - Setting Up
  • Syntax Module - Setting up the use of this module.
• Chapter 2 - The Parse Tree
  • Syntax Trees - To parse trees which decompose the meaning of excerpts of text, and which allow annotations to be made at each node.
  • Node Types - Each node in a syntax tree has a type, which informs whether it can have child nodes, and what in general terms it means.
  • Parse Nodes - Syntax trees are made of single nodes, each representing one way to understand a given piece of text.
  • Node Annotations - Attaching general-purpose data to nodes in the syntax tree.
  • Tree Verification - Did we go wrong anywhere? This section is purely defensive, and tests whether Inform contains bugs of a kind which lead to malformed syntax trees: that should never happen even if the source text being compiled is a dumpster fire.
  • Simple Preform Cache - A simple way to speed up repeated Preform parses of the same text.
• Chapter 3 - Breaking into Sentences
  • Sentences - To break up the stream of words produced by the lexer into English sentences, and join each to the parse tree.