adjS

adjS is a term that appears in the context of certain programming languages and computational linguistics, particularly related to attribute grammars or similar formalisms. It generally refers to a set of attributes associated with a syntactic symbol or a node in a parse tree. These attributes can store information about the symbol's properties, such as its type, value, or semantic meaning. The 'S' often denotes the symbol itself, and 'adj' could be short for 'adjacent' or 'associated,' indicating attributes that are directly linked to or modify the properties of that symbol.

In practice, adjS might be used to propagate information up or down a parse tree during the process of semantic analysis or code generation. For example, in an attribute grammar, a symbol representing an arithmetic expression might have adjS containing attributes like its calculated integer value, its data type (e.g., integer, float), or a pointer to its representation in an intermediate code. The precise definition and usage of adjS are dependent on the specific grammar formalism and the tools that implement it. It is a mechanism for attaching semantic data to syntactic structures.