eric6/ThirdParty/Pygments/pygments/lexers/rust.py

changeset 6942
2602857055c5
parent 6651
e8f3b5568b21
child 7547
21b0534faebc
diff -r f99d60d6b59b -r 2602857055c5 eric6/ThirdParty/Pygments/pygments/lexers/rust.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/ThirdParty/Pygments/pygments/lexers/rust.py	Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,220 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.lexers.rust
+    ~~~~~~~~~~~~~~~~~~~~
+
+    Lexers for the Rust language.
+
+    :copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+from pygments.lexer import RegexLexer, include, bygroups, words, default
+from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
+    Number, Punctuation, Whitespace
+
+__all__ = ['RustLexer']
+
+
+class RustLexer(RegexLexer):
+    """
+    Lexer for the Rust programming language (version 1.10).
+
+    .. versionadded:: 1.6
+    """
+    name = 'Rust'
+    filenames = ['*.rs', '*.rs.in']
+    aliases = ['rust', 'rs']
+    mimetypes = ['text/rust']
+
+    keyword_types = (
+        words(('u8', 'u16', 'u32', 'u64', 'i8', 'i16', 'i32', 'i64',
+               'usize', 'isize', 'f32', 'f64', 'str', 'bool'),
+              suffix=r'\b'),
+        Keyword.Type)
+
+    builtin_types = (words((
+        # Reexported core operators
+        'Copy', 'Send', 'Sized', 'Sync',
+        'Drop', 'Fn', 'FnMut', 'FnOnce',
+
+        # Reexported types and traits
+        'Box',
+        'ToOwned',
+        'Clone',
+        'PartialEq', 'PartialOrd', 'Eq', 'Ord',
+        'AsRef', 'AsMut', 'Into', 'From',
+        'Default',
+        'Iterator', 'Extend', 'IntoIterator',
+        'DoubleEndedIterator', 'ExactSizeIterator',
+        'Option',
+        'Some', 'None',
+        'Result',
+        'Ok', 'Err',
+        'SliceConcatExt',
+        'String', 'ToString',
+        'Vec'), suffix=r'\b'),
+        Name.Builtin)
+
+    tokens = {
+        'root': [
+            # rust allows a file to start with a shebang, but if the first line
+            # starts with #![ then it’s not a shebang but a crate attribute.
+            (r'#![^[\r\n].*$', Comment.Preproc),
+            default('base'),
+        ],
+        'base': [
+            # Whitespace and Comments
+            (r'\n', Whitespace),
+            (r'\s+', Whitespace),
+            (r'//!.*?\n', String.Doc),
+            (r'///(\n|[^/].*?\n)', String.Doc),
+            (r'//(.*?)\n', Comment.Single),
+            (r'/\*\*(\n|[^/*])', String.Doc, 'doccomment'),
+            (r'/\*!', String.Doc, 'doccomment'),
+            (r'/\*', Comment.Multiline, 'comment'),
+
+            # Macro parameters
+            (r"""\$([a-zA-Z_]\w*|\(,?|\),?|,?)""", Comment.Preproc),
+            # Keywords
+            (words((
+                'as', 'box', 'const', 'crate', 'else', 'extern',
+                'for', 'if', 'impl', 'in', 'loop', 'match', 'move',
+                'mut', 'pub', 'ref', 'return', 'static', 'super',
+                'trait', 'unsafe', 'use', 'where', 'while'), suffix=r'\b'),
+             Keyword),
+            (words(('abstract', 'alignof', 'become', 'do', 'final', 'macro',
+                    'offsetof', 'override', 'priv', 'proc', 'pure', 'sizeof',
+                    'typeof', 'unsized', 'virtual', 'yield'), suffix=r'\b'),
+             Keyword.Reserved),
+            (r'(true|false)\b', Keyword.Constant),
+            (r'mod\b', Keyword, 'modname'),
+            (r'let\b', Keyword.Declaration),
+            (r'fn\b', Keyword, 'funcname'),
+            (r'(struct|enum|type|union)\b', Keyword, 'typename'),
+            (r'(default)(\s+)(type|fn)\b', bygroups(Keyword, Text, Keyword)),
+            keyword_types,
+            (r'self\b', Name.Builtin.Pseudo),
+            # Prelude (taken from Rust’s src/libstd/prelude.rs)
+            builtin_types,
+            # Path seperators, so types don't catch them.
+            (r'::\b', Text),
+            # Types in positions.
+            (r'(?::|->)', Text, 'typename'),
+            # Labels
+            (r'(break|continue)(\s*)(\'[A-Za-z_]\w*)?',
+             bygroups(Keyword, Text.Whitespace, Name.Label)),
+            # Character Literal
+            (r"""'(\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0"""
+             r"""|\\u\{[0-9a-fA-F]{1,6}\}|.)'""",
+             String.Char),
+            (r"""b'(\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\0"""
+             r"""|\\u\{[0-9a-fA-F]{1,6}\}|.)'""",
+             String.Char),
+            # Binary Literal
+            (r'0b[01_]+', Number.Bin, 'number_lit'),
+            # Octal Literal
+            (r'0o[0-7_]+', Number.Oct, 'number_lit'),
+            # Hexadecimal Literal
+            (r'0[xX][0-9a-fA-F_]+', Number.Hex, 'number_lit'),
+            # Decimal Literal
+            (r'[0-9][0-9_]*(\.[0-9_]+[eE][+\-]?[0-9_]+|'
+             r'\.[0-9_]*(?!\.)|[eE][+\-]?[0-9_]+)', Number.Float,
+             'number_lit'),
+            (r'[0-9][0-9_]*', Number.Integer, 'number_lit'),
+            # String Literal
+            (r'b"', String, 'bytestring'),
+            (r'"', String, 'string'),
+            (r'b?r(#*)".*?"\1', String),
+
+            # Lifetime
+            (r"""'static""", Name.Builtin),
+            (r"""'[a-zA-Z_]\w*""", Name.Attribute),
+
+            # Operators and Punctuation
+            (r'[{}()\[\],.;]', Punctuation),
+            (r'[+\-*/%&|<>^!~@=:?]', Operator),
+
+            # Identifier
+            (r'[a-zA-Z_]\w*', Name),
+
+            # Attributes
+            (r'#!?\[', Comment.Preproc, 'attribute['),
+            # Macros
+            (r'([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\s*)(\{)',
+             bygroups(Comment.Preproc, Punctuation, Whitespace, Name,
+                      Whitespace, Punctuation), 'macro{'),
+            (r'([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\()',
+             bygroups(Comment.Preproc, Punctuation, Whitespace, Name,
+                      Punctuation), 'macro('),
+        ],
+        'comment': [
+            (r'[^*/]+', Comment.Multiline),
+            (r'/\*', Comment.Multiline, '#push'),
+            (r'\*/', Comment.Multiline, '#pop'),
+            (r'[*/]', Comment.Multiline),
+        ],
+        'doccomment': [
+            (r'[^*/]+', String.Doc),
+            (r'/\*', String.Doc, '#push'),
+            (r'\*/', String.Doc, '#pop'),
+            (r'[*/]', String.Doc),
+        ],
+        'modname': [
+            (r'\s+', Text),
+            (r'[a-zA-Z_]\w*', Name.Namespace, '#pop'),
+            default('#pop'),
+        ],
+        'funcname': [
+            (r'\s+', Text),
+            (r'[a-zA-Z_]\w*', Name.Function, '#pop'),
+            default('#pop'),
+        ],
+        'typename': [
+            (r'\s+', Text),
+            (r'&', Keyword.Pseudo),
+            builtin_types,
+            keyword_types,
+            (r'[a-zA-Z_]\w*', Name.Class, '#pop'),
+            default('#pop'),
+        ],
+        'number_lit': [
+            (r'[ui](8|16|32|64|size)', Keyword, '#pop'),
+            (r'f(32|64)', Keyword, '#pop'),
+            default('#pop'),
+        ],
+        'string': [
+            (r'"', String, '#pop'),
+            (r"""\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0"""
+             r"""|\\u\{[0-9a-fA-F]{1,6}\}""", String.Escape),
+            (r'[^\\"]+', String),
+            (r'\\', String),
+        ],
+        'bytestring': [
+            (r"""\\x[89a-fA-F][0-9a-fA-F]""", String.Escape),
+            include('string'),
+        ],
+        'macro{': [
+            (r'\{', Operator, '#push'),
+            (r'\}', Operator, '#pop'),
+        ],
+        'macro(': [
+            (r'\(', Operator, '#push'),
+            (r'\)', Operator, '#pop'),
+        ],
+        'attribute_common': [
+            (r'"', String, 'string'),
+            (r'\[', Comment.Preproc, 'attribute['),
+            (r'\(', Comment.Preproc, 'attribute('),
+        ],
+        'attribute[': [
+            include('attribute_common'),
+            (r'\];?', Comment.Preproc, '#pop'),
+            (r'[^"\]]+', Comment.Preproc),
+        ],
+        'attribute(': [
+            include('attribute_common'),
+            (r'\);?', Comment.Preproc, '#pop'),
+            (r'[^")]+', Comment.Preproc),
+        ],
+    }

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