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| This page gives an in-depth specification of the DomTool language. Most members would probably prefer the more informal presentation in DomTool/UserGuide. [[TableOfContents()]] = Source code = For a complete, precise, and accurate grammatical specification, see the lexer and parser specifications `src/domtool.lex` and `src/domtool.grm` in the DomTool source code. See `src/tycheck.sml` for the type-checker implementation. ["DomTool/Building"] has information on obtaining the source. = Token conventions = In the grammars that follow, we use these lexical token class names: || '''Name''' || '''Description''' || || `CSymbol` || Capitalized identifier || = Predicates = DomTool uses '''predicates''' to describe in what contexts an action may occur. For instance, web-related actions should only occur inside the scope of a virtual host directive. Predicates are built up following the grammar in the table below, using the letter `P` as the non-terminal for predicates. Meanings are given as statements that must hold about the context where an action is found. The context is represented as a stack of '''context IDs''' which have been declared with `context` declarations. || '''Syntax''' || '''Description''' || '''Meaning''' || || `Root` || Root || The stack is empty. || || `CSymbol` || Context ID || `CSymbol` is on the top of the stack. || || `^P` || Suffixes || Some (not necessarily strict) suffix of the stack matches `P`. || || `!P` || Not || The stack ''doesn't'' match `P`. || || `P1 & P2` || And || The stack matches both `P1` and `P2`. || || `(P)` || Grouping || Identical to `P` || |
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