Bump pest_generator from 2.7.15 to 2.8.0

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Bumps pest_generator from 2.7.15 to 2.8.0.

Release notes

Sourced from pest_generator's releases.

v2.8.0

What's Changed

• debugger: add long versions of the commands as well as all of their prefixes by @​alpaylan in pest-parser/pest#1062
• Debugger: Fix deadlock on Windows by @​zaddach in pest-parser/pest#1072
• Debugger: Fix command parsing on the debugger prompt by @​zaddach in pest-parser/pest#1074
• Debugger: Allow specification of several breakpoints from cmdline args by @​zaddach in pest-parser/pest#1075
• debugger: fixed cli-parsing of id command by @​Giftzwerg02 in pest-parser/pest#1089
• rm some compiler warnings by @​yshavit in pest-parser/pest#1093
• new rule: PUSH_LITERAL by @​yshavit in pest-parser/pest#1092

A new rule PUSH_LITERAL(...).

PUSH_LITERAL("a"): This rule always matches and never consumes any input, and it pushes "a" to the stack. The argument must be a literal.

[!note] You need to enable the "grammar-extras" feature as mentioned in the semantic versioning notes below in order to use this feature.

This new rule accomplishes the goals of pest-parser/pest#880 (in a slightly different way). Instead of PUSH_OTHER("-", " "), this is just PUSH_LITERAL(" "). If you wanted to match A and then push B, you just combine them via a sequence: "-" ~ PUSH_LITERAL(" ").

This can be used to generalize quoted strings to a pair of matching but non-equal delimiters. For example, many programming languages let you express strings using either double or single quotes, and don't require escaping of the other:

string = ${ PUSH( "\"" | "'") ~ quoted_char* ~ POP }
quoted_char = @{!PEEK ~ ANY } // simple version without escape sequences
// will parse "a'b" or 'a"b'

This happens to work because the starting and ending char are the same, but that's not always desirable. For example, we may want to allow strings to be delimited by either ( ... ) or < ... >, with similar rules as above, such that (a>) and <a)> are both valid.

With PUSH_LITERAL, this becomes:

string = ${ quote_open ~ quoted_char* ~ POP }
quote_open = @{
  ( "(" ~ PUSH_LITERAL(")") )
| ( "<" ~ PUSH_LITERAL(">") )
}
quoted_char = @{!PEEK ~ ANY } // simple version without escape sequences

New Contributors

• @​alpaylan made their first contribution in pest-parser/pest#1062
• @​zaddach made their first contribution in pest-parser/pest#1072
• @​Giftzwerg02 made their first contribution in pest-parser/pest#1089
• @​yshavit made their first contribution in pest-parser/pest#1093

Full Changelog: pest-parser/pest@v2.7.15...v2.8.0

Warning: Semantic Versioning

Note that the node tag feature in 2.6.0 was a technically semver-breaking change even though it is a backwards-compatible / non-breaking change in the meta-grammar. There may be similar non-breaking changes to the meta-grammar between minor versions in the future. These non-breaking changes, however, may translate into semver-breaking changes due to the additional variants propagated from the generated Rule enum.

... (truncated)

Commits

• 111e779 bump version to 2.8.0 (#1094)
• 2b30b8d new rule: PUSH_LITERAL (#1092)
• 61f1ebc rm some compiler warnings (#1093)
• 17a7fa0 fixed cli-parsing of id <text-input> command (#1089)
• 7a809dd bump toolchain in semver check (#1091)
• b1869d5 bump toolchain (#1090)
• a13c05c check if a crate version was already published (#1078)
• eca1f1c Debugger: Allow specification of several breakpoints from cmdline args (#1075)
• f2f4310 fix CIFuzz action (#1077)
• 8ea0c31 Debugger: Fix command parsing on the debugger prompt (#1074)
• Additional commits viewable in compare view

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