Comments (2)
Something is working in the railroad
branch, compile with -d:npegDiagrams
for output.
Open question is how to represent lookahead (&
) and not-predicate (!
), as these do not consume any input.
╭─────────»──────────╮
exp o──[term]─┴┬─[termOp]──[term]─┬┴─o
╰────────«─────────╯
╭───────────»────────────╮
term o──[factor]─┴┬─[factorOp]──[factor]─┬┴─o
╰──────────«───────────╯
factor o──┬─[number]───────────────┬──o
╰─[open]──[exp]──[close]─╯
line o──[ws]──[exp]──[eol]──o
╭─────»─────╮
S o─┴┬─[Space]─┬┴─o
╰────«────╯
jtrue o──"true"──o
jfalse o──"false"──o
jnull o──"null"──o
unicodeEscape o──'u'──[Xdigit]──[Xdigit]──[Xdigit]──[Xdigit]──[Xdigit]──o
escape o──'\'──┬─{'"','\','b','f','n','r','t','{'..'|'}─┬──o
╰─[unicodeEscape]────────────────────────╯
╭────────────────»────────────────╮
╭────»─────╮│ ╭─────»──────╮ │
stringBody o─┴─[escape]─┴┴┬┬─{' '..'\xff'}─┬┴┬─[escape]─┬┴┬┴─o
│╰───────«───────╯ ╰────«─────╯ │
╰───────────────«───────────────╯
╭──»──╮ ╭──»──╮
jstring o─┴─[S]─┴─'"'──[stringBody]──'"'─┴─[S]─┴─o
minus o──'-'──o
intPart o──┬─'0'──────────────────┬──o
│ ╭─────»─────╮│
╰─[Digit]─┴┬─[Digit]─┬┴╯
╰────«────╯
fractPart o──"."─┬─[Digit]─┬─o
╰────«────╯
╭────»────╮
expPart o──┬─'e'─┬─┴─┬─'+'─┬─┴┬─[Digit]─┬─o
╰─'E'─╯ ╰─'-'─╯ ╰────«────╯
╭────»────╮ ╭──────»──────╮╭─────»─────╮
jnumber o─┴─[minus]─┴─[intPart]─┴─[fractPart]─┴┴─[expPart]─┴─o
from npeg.
Closed by 599af1b
from npeg.
Related Issues (20)
- `-d:npegTrace` code allocates a number of closures equal to the number of states HOT 1
- Implement slicing operators for captures HOT 10
- PEG section in the Nim book HOT 2
- Just wanted to say npeg is great HOT 1
- More/larger examples of Error reporting HOT 5
- Memorization & Bryan Ford HOT 3
- Prevent code blocks captures from executing HOT 7
- A paper citing Npeg HOT 1
- Implement handling of left recursion HOT 5
- [Question] Parsing comments with two characters limits HOT 2
- Performance and Complexity HOT 1
- push() captures broken? HOT 2
- When defining grammar block parameterized rules block name needed? HOT 1
- [Question] Why is my npeg parser done, then starts backtracking and fails. HOT 8
- FR: Deferred code block captures HOT 1
- Enhancing parser flexibility: improving type parsing with the push template HOT 1
- Captures not working inside of proc with generic arguments HOT 21
- javascript support HOT 6
- Help - how to handle captures and optionals HOT 1
- Best way of handling languages that have unicode identifiers? HOT 10
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from npeg.