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Removed semicolons and compound statements, added support for (foo: a b)

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style syntax for thunks that continue till the end of paren groups.
This commit is contained in:
Bruce Hill 2018-01-07 16:47:14 -08:00
parent 2df539a762
commit a4c8e5ce65
1 changed files with 8 additions and 13 deletions
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21
nomsu.peg
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@ -1,25 +1,21 @@
file (File):
{| shebang?
(ignored_line %nl)*
statements (nodent statements)*
statement (nodent statement)*
(%nl ignored_line)*
(!. / (("" -> "Parse error") => error)?) |}
shebang: "#!" [^%nl]* %nl
inline_statements: inline_statement (semicolon inline_statement)*
noeol_statements: (inline_statement semicolon noeol_statements) / noeol_statement
statements: (inline_statement semicolon statements) / statement
statement: functioncall / expression
noeol_statement: noeol_functioncall / noeol_expression
inline_statement: inline_functioncall / inline_expression
inline_thunk (Thunk): {| "(" %ws* ":" %ws* inline_statements %ws* ")" |}
eol_thunk (Thunk): {| ":" %ws* noeol_statements eol |}
inline_thunk (Thunk): {| ":" %ws* inline_statement |}
eol_thunk (Thunk): {| ":" %ws* noeol_statement eol |}
indented_thunk (Thunk):
{| ":" indent
statements (nodent statements)*
statement (nodent statement)*
(dedent / (("" -> "Error while parsing thunk") => error))
|}
@ -29,7 +25,7 @@ indented_nomsu (Nomsu): "\" expression
inline_expression:
number / variable / inline_string / inline_list / inline_dict / inline_nomsu
/ inline_thunk / ("(" %ws* inline_statement %ws* ")")
/ ("(" %ws* (inline_thunk / inline_statement) %ws* ")")
noeol_expression:
indented_string / indented_nomsu / indented_list / indented_dict / indented_thunk
/ ("(..)" indent
@ -40,7 +36,7 @@ expression: eol_thunk / eol_nomsu / noeol_expression
-- Function calls need at least one word in them
inline_functioncall (FunctionCall):
{| (inline_expression %ws*)* word (%ws* (inline_expression / word))* |}
{| (inline_expression %ws*)* word (%ws* (inline_expression / word))* (%ws* inline_thunk)?|}
noeol_functioncall (FunctionCall):
{| (noeol_expression %ws*)* word (%ws* (noeol_expression / word))* |}
functioncall (FunctionCall):
@ -50,7 +46,7 @@ word (Word): { %operator / (!number plain_word) }
inline_string (String):
'"' {|
({~ (('\"' -> '"') / ('\\' -> '\') / %escape_char / [^%nl\"])+ ~}
({~ (('\"' -> '"') / ('\\' -> '\') / ('\..' -> '..') / %escape_char / [^%nl\"])+ ~}
/ string_interpolation)*
|} '"'
indented_string (String):
@ -61,7 +57,7 @@ indented_string (String):
~} / string_interpolation)*
|} ((!.) / (&(%nl+ !%gt_nodented)) / (("" -> "Error while parsing String") => error))
string_interpolation:
"\" (variable / inline_list / inline_dict / inline_thunk / ("(" %ws* inline_statement %ws* ")"))
"\" (variable / inline_list / inline_dict / inline_string / ("(" %ws* (inline_thunk / inline_statement) %ws* ")"))
number (Number): (("-"? (([0-9]+ "." [0-9]+) / ("." [0-9]+) / ([0-9]+)))-> tonumber)
@ -103,6 +99,5 @@ indent: eol (%nl ignored_line)* %nl %indented ((block_comment/line_comment) (%nl
nodent: eol (%nl ignored_line)* %nl %nodented
dedent: eol (%nl ignored_line)* (((!.) &%dedented) / (&(%nl %dedented)))
comma: %ws* "," %ws*
semicolon: %ws* ";" %ws*
dotdot: nodent ".." %ws*
plain_word: ([a-zA-Z0-9_] / %utf8_char)+