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325 lines
10 KiB
Python
325 lines
10 KiB
Python
2 years ago
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"""
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pygments.lexers.mcfunction
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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Lexers for MCFunction and related languages.
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:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, default, include, bygroups
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from pygments.token import (Comment, Keyword, Literal, Name, Number,
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Operator, Punctuation, String, Text, Token,
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Whitespace)
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__all__ = ['SNBTLexer', 'MCFunctionLexer']
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class SNBTLexer(RegexLexer):
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"""Lexer for stringified NBT, a data format used in Minecraft
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.. versionadded:: 2.12.0
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"""
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name = "SNBT"
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url = "https://minecraft.fandom.com/wiki/NBT_format"
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aliases = ["snbt"]
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filenames = ["*.snbt"]
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mimetypes = ["text/snbt"]
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tokens = {
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"root": [
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# We only look for the open bracket here since square bracket
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# is only valid in NBT pathing (which is a mcfunction idea).
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(r"\{", Punctuation, "compound"),
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(r"[^\{]+", Text),
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],
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"whitespace": [
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(r"\s+", Whitespace),
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],
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"operators": [
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(r"[,:;]", Punctuation),
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],
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"literals": [
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(r"(true|false)", Keyword.Constant),
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(r"-?\d+[eE]-?\d+", Number.Float),
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(r"-?\d*\.\d+[fFdD]?", Number.Float),
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(r"-?\d+[bBsSlLfFdD]?", Number.Integer),
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# Separate states for both types of strings so they don't entangle
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(r'"', String.Double, "literals.string_double"),
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(r"'", String.Single, "literals.string_single"),
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],
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"literals.string_double": [
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(r"\\.", String.Escape),
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(r'[^\\"\n]+', String.Double),
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(r'"', String.Double, "#pop"),
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],
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"literals.string_single": [
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(r"\\.", String.Escape),
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(r"[^\\'\n]+", String.Single),
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(r"'", String.Single, "#pop"),
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],
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"compound": [
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# this handles the unquoted snbt keys
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# note: stringified keys still work
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(r"[A-Z_a-z]+", Name.Attribute),
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include("operators"),
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include("whitespace"),
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include("literals"),
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(r"\{", Punctuation, "#push"),
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(r"\[", Punctuation, "list"),
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(r"\}", Punctuation, "#pop"),
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],
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"list": [
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(r"[A-Z_a-z]+", Name.Attribute),
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include("literals"),
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include("operators"),
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include("whitespace"),
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(r"\[", Punctuation, "#push"),
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(r"\{", Punctuation, "compound"),
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(r"\]", Punctuation, "#pop"),
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],
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}
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class MCFunctionLexer(RegexLexer):
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"""Lexer for the mcfunction scripting language used in Minecraft
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Modelled somewhat after the `GitHub mcfunction grammar <https://github.com/Arcensoth/language-mcfunction>`_.
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.. versionadded:: 2.12.0
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"""
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name = "MCFunction"
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url = "https://minecraft.fandom.com/wiki/Commands"
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aliases = ["mcfunction", "mcf"]
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filenames = ["*.mcfunction"]
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mimetypes = ["text/mcfunction"]
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# Used to denotate the start of a block comment, borrowed from Github's mcfunction
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_block_comment_prefix = "[>!]"
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tokens = {
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"root": [
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include("names"),
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include("comments"),
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include("literals"),
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include("whitespace"),
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include("property"),
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include("operators"),
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include("selectors"),
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],
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"names": [
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# The start of a command (either beginning of line OR after the run keyword)
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# We don't encode a list of keywords since mods, plugins, or even pre-processors
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# may add new commands, so we have a 'close-enough' regex which catches them.
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(r"^(\s*)([a-z_]+)", bygroups(Whitespace, Name.Builtin)),
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(r"(?<=run)\s+[a-z_]+", Name.Builtin),
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# UUID
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(
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r"\b[0-9a-fA-F]+(?:-[0-9a-fA-F]+){4}\b",
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Name.Variable,
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),
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include("resource-name"),
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# normal command names and scoreboards
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# there's no way to know the differences unfortuntely
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(r"[A-Za-z_][A-Za-z0-9_.#%$]+", Keyword.Constant),
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(r"[#%$][A-Za-z0-9_.#%$]+", Name.Variable.Magic),
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],
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"resource-name": [
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(
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# resource names have to be lowercase
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r"#?[a-z_][a-z_.-]*:[a-z0-9_./-]+",
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Name.Function,
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),
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(
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# similar to above except optional `:``
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# a `/` must be present "somewhere"
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r"#?[a-z0-9_\.\-]+\/[a-z0-9_\.\-\/]+",
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Name.Function,
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)
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],
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"whitespace": [
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(r"\s+", Whitespace),
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],
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"comments": [
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(
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rf"^\s*(#{_block_comment_prefix})",
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Comment.Multiline,
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(
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"comments.block",
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"comments.block.emphasized",
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),
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),
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(r"#.*$", Comment.Single),
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],
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"comments.block": [
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(rf"^\s*#{_block_comment_prefix}", Comment.Multiline, "comments.block.emphasized"),
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(r"^\s*#", Comment.Multiline, "comments.block.normal"),
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default("#pop"),
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],
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"comments.block.normal": [
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include("comments.block.special"),
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(r"\S+", Comment.Multiline),
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(r"\n", Text, "#pop"),
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include("whitespace"),
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],
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"comments.block.emphasized": [
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include("comments.block.special"),
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(r"\S+", String.Doc),
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(r"\n", Text, "#pop"),
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include("whitespace"),
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],
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"comments.block.special": [
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# Params
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(r"@\S+", Name.Decorator),
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include("resource-name"),
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# Scoreboard player names
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(r"[#%$][A-Za-z0-9_.#%$]+", Name.Variable.Magic),
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],
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"operators": [
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(r"[\-~%^?!+*<>\\/|&=.]", Operator),
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],
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"literals": [
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(r"\.\.", Literal),
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(r"(true|false)", Keyword.Pseudo),
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# these are like unquoted strings and appear in many places
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(r"[A-Za-z_]+", Name.Variable.Class),
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(r"[0-7]b", Number.Byte),
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(r"[+-]?\d*\.?\d+([eE]?[+-]?\d+)?[df]?\b", Number.Float),
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(r"[+-]?\d+\b", Number.Integer),
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(r'"', String.Double, "literals.string-double"),
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(r"'", String.Single, "literals.string-single"),
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],
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"literals.string-double": [
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(r"\\.", String.Escape),
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(r'[^\\"\n]+', String.Double),
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(r'"', String.Double, "#pop"),
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],
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"literals.string-single": [
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(r"\\.", String.Escape),
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(r"[^\\'\n]+", String.Single),
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(r"'", String.Single, "#pop"),
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],
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"selectors": [
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(r"@[a-z]", Name.Variable),
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],
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## Generic Property Container
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# There are several, differing instances where the language accepts
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# specific contained keys or contained key, value pairings.
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#
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# Property Maps:
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# - Starts with either `[` or `{`
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# - Key separated by `:` or `=`
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# - Deliminated by `,`
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#
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# Property Lists:
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# - Starts with `[`
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# - Deliminated by `,`
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#
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# For simplicity, these patterns match a generic, nestable structure
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# which follow a key, value pattern. For normal lists, there's only keys.
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# This allow some "illegal" structures, but we'll accept those for
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# sake of simplicity
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#
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# Examples:
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# - `[facing=up, powered=true]` (blockstate)
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# - `[name="hello world", nbt={key: 1b}]` (selector + nbt)
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# - `[{"text": "value"}, "literal"]` (json)
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##
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"property": [
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# This state gets included in root and also several substates
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# We do this to shortcut the starting of new properties
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# within other properties. Lists can have sublists and compounds
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# and values can start a new property (see the `difficult_1.txt`
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# snippet).
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(r"\{", Punctuation, ("property.curly", "property.key")),
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(r"\[", Punctuation, ("property.square", "property.key")),
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],
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"property.curly": [
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include("whitespace"),
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include("property"),
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(r"\}", Punctuation, "#pop"),
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],
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"property.square": [
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include("whitespace"),
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include("property"),
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(r"\]", Punctuation, "#pop"),
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# lists can have sequences of items
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(r",", Punctuation),
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],
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"property.key": [
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include("whitespace"),
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# resource names (for advancements)
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# can omit `:` to default `minecraft:`
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# must check if there is a future equals sign if `:` is in the name
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(r"#?[a-z_][a-z_\.\-]*\:[a-z0-9_\.\-/]+(?=\s*\=)", Name.Attribute, "property.delimiter"),
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(r"#?[a-z_][a-z0-9_\.\-/]+", Name.Attribute, "property.delimiter"),
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# unquoted NBT key
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(r"[A-Za-z_\-\+]+", Name.Attribute, "property.delimiter"),
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# quoted JSON or NBT key
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(r'"', Name.Attribute, "property.delimiter", "literals.string-double"),
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(r"'", Name.Attribute, "property.delimiter", "literals.string-single"),
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# index for a list
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(r"-?\d+", Number.Integer, "property.delimiter"),
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default("#pop"),
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],
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"property.key.string-double": [
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(r"\\.", String.Escape),
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(r'[^\\"\n]+', Name.Attribute),
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(r'"', Name.Attribute, "#pop"),
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],
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"property.key.string-single": [
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(r"\\.", String.Escape),
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(r"[^\\'\n]+", Name.Attribute),
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(r"'", Name.Attribute, "#pop"),
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],
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"property.delimiter": [
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include("whitespace"),
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(r"[:=]!?", Punctuation, "property.value"),
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(r",", Punctuation),
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default("#pop"),
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],
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"property.value": [
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include("whitespace"),
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# unquoted resource names are valid literals here
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(r"#?[a-z_][a-z_\.\-]*\:[a-z0-9_\.\-/]+", Name.Tag),
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(r"#?[a-z_][a-z0-9_\.\-/]+", Name.Tag),
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include("literals"),
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include("property"),
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default("#pop"),
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],
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}
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