Merge branch 'emacs' of http://git.hacks-galore.org/jao/factor
commit
0db52b0545
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@ -6,20 +6,20 @@ IN: peg.pl0
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#! Grammar for PL/0 based on http://en.wikipedia.org/wiki/PL/0
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EBNF: pl0
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EBNF: pl0
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block = { "CONST" ident "=" number { "," ident "=" number }* ";" }?
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{ "VAR" ident { "," ident }* ";" }?
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{ "PROCEDURE" ident ";" { block ";" }? }* statement
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statement = { ident ":=" expression
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| "CALL" ident
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| "BEGIN" statement { ";" statement }* "END"
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| "IF" condition "THEN" statement
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| "WHILE" condition "DO" statement }?
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block = { "CONST" ident "=" number { "," ident "=" number }* ";" }?
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{ "VAR" ident { "," ident }* ";" }?
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{ "PROCEDURE" ident ";" { block ";" }? }* statement
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statement = { ident ":=" expression
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| "CALL" ident
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| "BEGIN" statement { ";" statement }* "END"
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| "IF" condition "THEN" statement
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| "WHILE" condition "DO" statement }?
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condition = { "ODD" expression }
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| { expression ("=" | "#" | "<=" | "<" | ">=" | ">") expression }
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expression = {"+" | "-"}? term { {"+" | "-"} term }*
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term = factor { {"*" | "/"} factor }*
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expression = {"+" | "-"}? term { {"+" | "-"} term }*
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term = factor { {"*" | "/"} factor }*
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factor = ident | number | "(" expression ")"
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ident = (([a-zA-Z])+) => [[ >string ]]
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digit = ([0-9]) => [[ digit> ]]
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@ -58,6 +58,7 @@
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(number constant "integers and floats")
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(ratio constant "ratios")
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(declaration keyword "declaration words")
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(ebnf-form constant "EBNF: ... ;EBNF form")
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(parsing-word keyword "parsing words")
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(setter-word function-name "setter words (>>foo)")
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(getter-word function-name "getter words (foo>>)")
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@ -75,7 +76,9 @@
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(defun fuel-font-lock--syntactic-face (state)
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(if (nth 3 state) 'factor-font-lock-string
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(let ((c (char-after (nth 8 state))))
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(cond ((or (char-equal c ?\ ) (char-equal c ?\n))
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(cond ((or (char-equal c ?\ )
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(char-equal c ?\n)
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(char-equal c ?E))
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(save-excursion
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(goto-char (nth 8 state))
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(beginning-of-line)
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@ -85,6 +88,8 @@
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'factor-font-lock-symbol)
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((looking-at-p "C-ENUM:\\( \\|\n\\)")
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'factor-font-lock-constant)
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((looking-at-p "E")
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'factor-font-lock-ebnf-form)
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(t 'default))))
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((or (char-equal c ?U) (char-equal c ?C))
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'factor-font-lock-parsing-word)
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@ -48,7 +48,7 @@
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"B" "BIN:"
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"C:" "C-ENUM:" "C-STRUCT:" "C-UNION:" "CHAR:" "CONSTANT:" "call-next-method"
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"DEFER:"
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"ERROR:" "EXCLUDE:"
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"EBNF:" ";EBNF" "ERROR:" "EXCLUDE:"
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"f" "FORGET:" "FROM:" "FUNCTION:"
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"GENERIC#" "GENERIC:"
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"HELP:" "HEX:" "HOOK:"
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@ -254,6 +254,8 @@
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("\\_<<\\(\"\\)\\_>" (1 "<b"))
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("\\_<\\(\"\\)>\\_>" (1 ">b"))
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;; Multiline constructs
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("\\_<\\(E\\)BNF:\\( \\|\n\\)" (1 "<b"))
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("\\_<;EBN\\(F\\)\\_>" (1 ">b"))
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("\\_<\\(U\\)SING: \\(;\\)" (1 "<b") (2 ">b"))
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("\\_<USING:\\( \\)" (1 "<b"))
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("\\_<\\(C\\)-ENUM: \\(;\\)" (1 "<b") (2 ">b"))
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