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"""
pygments.lexers.webassembly
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lexers for the WebAssembly text format.
The grammar can be found at https://github.com/WebAssembly/spec/blob/master/interpreter/README.md
and https://webassembly.github.io/spec/core/text/.
:copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, words, bygroups, default
from pygments.token import Text, Comment, Operator, Keyword, String, Number, Punctuation, Name
__all__ = ['WatLexer']
keywords = (
'module', 'import', 'func', 'funcref', 'start', 'param', 'local', 'type',
'result', 'export', 'memory', 'global', 'mut', 'data', 'table', 'elem',
'if', 'then', 'else', 'end', 'block', 'loop'
)
builtins = (
'unreachable', 'nop', 'block', 'loop', 'if', 'else', 'end', 'br', 'br_if',
'br_table', 'return', 'call', 'call_indirect', 'drop', 'select',
'local.get', 'local.set', 'local.tee', 'global.get', 'global.set',
'i32.load', 'i64.load', 'f32.load', 'f64.load', 'i32.load8_s',
'i32.load8_u', 'i32.load16_s', 'i32.load16_u', 'i64.load8_s',
'i64.load8_u', 'i64.load16_s', 'i64.load16_u', 'i64.load32_s',
'i64.load32_u', 'i32.store', 'i64.store', 'f32.store', 'f64.store',
'i32.store8', 'i32.store16', 'i64.store8', 'i64.store16', 'i64.store32',
'memory.size', 'memory.grow', 'i32.const', 'i64.const', 'f32.const',
'f64.const', 'i32.eqz', 'i32.eq', 'i32.ne', 'i32.lt_s', 'i32.lt_u',
'i32.gt_s', 'i32.gt_u', 'i32.le_s', 'i32.le_u', 'i32.ge_s', 'i32.ge_u',
'i64.eqz', 'i64.eq', 'i64.ne', 'i64.lt_s', 'i64.lt_u', 'i64.gt_s',
'i64.gt_u', 'i64.le_s', 'i64.le_u', 'i64.ge_s', 'i64.ge_u', 'f32.eq',
'f32.ne', 'f32.lt', 'f32.gt', 'f32.le', 'f32.ge', 'f64.eq', 'f64.ne',
'f64.lt', 'f64.gt', 'f64.le', 'f64.ge', 'i32.clz', 'i32.ctz', 'i32.popcnt',
'i32.add', 'i32.sub', 'i32.mul', 'i32.div_s', 'i32.div_u', 'i32.rem_s',
'i32.rem_u', 'i32.and', 'i32.or', 'i32.xor', 'i32.shl', 'i32.shr_s',
'i32.shr_u', 'i32.rotl', 'i32.rotr', 'i64.clz', 'i64.ctz', 'i64.popcnt',
'i64.add', 'i64.sub', 'i64.mul', 'i64.div_s', 'i64.div_u', 'i64.rem_s',
'i64.rem_u', 'i64.and', 'i64.or', 'i64.xor', 'i64.shl', 'i64.shr_s',
'i64.shr_u', 'i64.rotl', 'i64.rotr', 'f32.abs', 'f32.neg', 'f32.ceil',
'f32.floor', 'f32.trunc', 'f32.nearest', 'f32.sqrt', 'f32.add', 'f32.sub',
'f32.mul', 'f32.div', 'f32.min', 'f32.max', 'f32.copysign', 'f64.abs',
'f64.neg', 'f64.ceil', 'f64.floor', 'f64.trunc', 'f64.nearest', 'f64.sqrt',
'f64.add', 'f64.sub', 'f64.mul', 'f64.div', 'f64.min', 'f64.max',
'f64.copysign', 'i32.wrap_i64', 'i32.trunc_f32_s', 'i32.trunc_f32_u',
'i32.trunc_f64_s', 'i32.trunc_f64_u', 'i64.extend_i32_s',
'i64.extend_i32_u', 'i64.trunc_f32_s', 'i64.trunc_f32_u',
'i64.trunc_f64_s', 'i64.trunc_f64_u', 'f32.convert_i32_s',
'f32.convert_i32_u', 'f32.convert_i64_s', 'f32.convert_i64_u',
'f32.demote_f64', 'f64.convert_i32_s', 'f64.convert_i32_u',
'f64.convert_i64_s', 'f64.convert_i64_u', 'f64.promote_f32',
'i32.reinterpret_f32', 'i64.reinterpret_f64', 'f32.reinterpret_i32',
'f64.reinterpret_i64',
)
class WatLexer(RegexLexer):
"""Lexer for the `WebAssembly text format <https://webassembly.org/>`_.
.. versionadded:: 2.9
"""
name = 'WebAssembly'
aliases = ['wast', 'wat']
filenames = ['*.wat', '*.wast']
tokens = {
'root': [
(words(keywords, suffix=r'(?=[^a-z_\.])'), Keyword),
(words(builtins), Name.Builtin, 'arguments'),
(words(['i32', 'i64', 'f32', 'f64']), Keyword.Type),
(r'\$[A-Za-z0-9!#$%&\'*+./:<=>?@\\^_`|~-]+', Name.Variable), # yes, all of the are valid in identifiers
(r';;.*?$', Comment.Single),
(r'\(;', Comment.Multiline, 'nesting_comment'),
(r'[+-]?0x[\dA-Fa-f](_?[\dA-Fa-f])*(.([\dA-Fa-f](_?[\dA-Fa-f])*)?)?([pP][+-]?[\dA-Fa-f](_?[\dA-Fa-f])*)?', Number.Float),
(r'[+-]?\d.\d(_?\d)*[eE][+-]?\d(_?\d)*', Number.Float),
(r'[+-]?\d.\d(_?\d)*', Number.Float),
(r'[+-]?\d.[eE][+-]?\d(_?\d)*', Number.Float),
(r'[+-]?(inf|nan:0x[\dA-Fa-f](_?[\dA-Fa-f])*|nan)', Number.Float),
(r'[+-]?0x[\dA-Fa-f](_?[\dA-Fa-f])*', Number.Hex),
(r'[+-]?\d(_?\d)*', Number.Integer),
(r'[\(\)]', Punctuation),
(r'"', String.Double, 'string'),
(r'\s+', Text),
],
'nesting_comment': [
(r'\(;', Comment.Multiline, '#push'),
(r';\)', Comment.Multiline, '#pop'),
(r'[^;(]+', Comment.Multiline),
(r'[;(]', Comment.Multiline),
],
'string': [
(r'\\[\dA-Fa-f][\dA-Fa-f]', String.Escape), # must have exactly two hex digits
(r'\\t', String.Escape),
(r'\\n', String.Escape),
(r'\\r', String.Escape),
(r'\\"', String.Escape),
(r"\\'", String.Escape),
(r'\\u\{[\dA-Fa-f](_?[\dA-Fa-f])*\}', String.Escape),
(r'\\\\', String.Escape),
(r'"', String.Double, '#pop'),
(r'[^"\\]+', String.Double),
],
'arguments': [
(r'\s+', Text),
(r'(offset)(=)(0x[\dA-Fa-f](_?[\dA-Fa-f])*)', bygroups(Keyword, Operator, Number.Hex)),
(r'(offset)(=)(\d(_?\d)*)', bygroups(Keyword, Operator, Number.Integer)),
(r'(align)(=)(0x[\dA-Fa-f](_?[\dA-Fa-f])*)', bygroups(Keyword, Operator, Number.Hex)),
(r'(align)(=)(\d(_?\d)*)', bygroups(Keyword, Operator, Number.Integer)),
default('#pop'),
]
}
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