53 lines
1.7 KiB
OCaml
53 lines
1.7 KiB
OCaml
(* Parsing the command-line options of PascaLIGO *)
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(* The type [command] denotes some possible behaviours of the
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compiler. The constructors are
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* [Quiet], then no output from the lexer and parser should be
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expected, safe error messages: this is the default value;
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* [Copy], then lexemes of tokens and markup will be printed to
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standard output, with the expectation of a perfect match with
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the input file;
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* [Units], then the tokens and markup will be printed to standard
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output, that is, the abstract representation of the concrete
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lexical syntax;
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* [Tokens], then the tokens only will be printed.
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*)
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type command = Quiet | Copy | Units | Tokens
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(* The type [options] gathers the command-line options.
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If the field [input] is [Some src], the name of the PascaLIGO
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source file, with the extension ".ligo", is [src]. If [input] is
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[Some "-"] or [None], the source file is read from standard input.
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The field [libs] is the paths where to find PascaLIGO files for
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inclusion (#include).
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The field [verbose] is a set of stages of the compiler chain,
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about which more information may be displayed.
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If the field [offsets] is [true], then the user requested that
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messages about source positions and regions be expressed in terms
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of horizontal offsets.
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If the value [mode] is [`Byte], then the unit in which source
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positions and regions are expressed in messages is the byte. If
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[`Point], the unit is unicode points.
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*)
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type options = {
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input : string option;
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libs : string list;
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verbose : Utils.String.Set.t;
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offsets : bool;
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mode : [`Byte | `Point];
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cmd : command
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}
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(* Parsing the command-line options on stdin *)
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val read : unit -> options
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