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fostr/syntax/fostr.sdf3

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init: SDF3/Statix project as initialized by Spoofax
2021-01-30 20:27:10 +00:00
module fostr
imports
Common
context-free start-symbols
feat: Allow indented continuation lines Resolves #2.
2021-02-01 08:29:00 +00:00
Start
init: SDF3/Statix project as initialized by Spoofax
2021-01-30 20:27:10 +00:00
feat: Add syntax for string literals Also rudimentary code generation. The difficulty is that for Haskell generation, we need to know whether an expression is a string or in to send it to standard output. So we will need to begin implementation of a type system for fostr.
2021-02-11 18:02:43 +00:00
lexical sorts
STRING_LITERAL
lexical syntax
STRING_LITERAL = ~[\']*
init: SDF3/Statix project as initialized by Spoofax
2021-01-30 20:27:10 +00:00
context-free sorts
feat: Allow expressions to be terminated/sequenced by ; Note that ultimately a terminated sequence may have a slightly different semantics (applying streams to `_|_`, most likely) but for now they don't.
2021-02-10 20:47:34 +00:00
Start LineSeq Line OptTermEx TermExLst TermEx Ex
init: SDF3/Statix project as initialized by Spoofax
2021-01-30 20:27:10 +00:00
context-free syntax
feat: sequencing of expressions with newline to same indent (#11) feat: sequencing of expressions with newline to same indent Also revised README to reflect greater emphasis on streams. Haskell code generation unsurprisingly required a fairly significant rework. Resolves #3. Co-authored-by: Glen Whitney <glen@studioinfinity.org> Reviewed-on: https://code.studioinfinity.org/glen/fostr/pulls/11 Co-Authored-By: Glen Whitney <glen@nobody@nowhere.net> Co-Committed-By: Glen Whitney <glen@nobody@nowhere.net>
2021-02-06 05:11:41 +00:00
Start.TopLevel = LineSeq
feat: Allow expressions to be terminated/sequenced by ; Note that ultimately a terminated sequence may have a slightly different semantics (applying streams to `_|_`, most likely) but for now they don't.
2021-02-10 20:47:34 +00:00
LineSeq = Line
LineSeq.Sequence = sq:Line+ {layout(align-list sq)}
feat: sequencing of expressions with newline to same indent (#11) feat: sequencing of expressions with newline to same indent Also revised README to reflect greater emphasis on streams. Haskell code generation unsurprisingly required a fairly significant rework. Resolves #3. Co-authored-by: Glen Whitney <glen@studioinfinity.org> Reviewed-on: https://code.studioinfinity.org/glen/fostr/pulls/11 Co-Authored-By: Glen Whitney <glen@nobody@nowhere.net> Co-Committed-By: Glen Whitney <glen@nobody@nowhere.net>
2021-02-06 05:11:41 +00:00
feat: Allow expressions to be terminated/sequenced by ; Note that ultimately a terminated sequence may have a slightly different semantics (applying streams to `_|_`, most likely) but for now they don't.
2021-02-10 20:47:34 +00:00
Line = OptTermEx
Line.ISequence = TermExLst OptTermEx {layout(0.first.line == 1.first.line)}
TermExLst.Prior = TermEx+
OptTermEx = ex:Ex {layout(offside ex)}
OptTermEx = te:TermEx {layout(offside te)}
TermEx.Terminate = <<Ex>;>
feat: Allow indented continuation lines Resolves #2.
2021-02-01 08:29:00 +00:00
feat: Add syntax for string literals Also rudimentary code generation. The difficulty is that for Haskell generation, we need to know whether an expression is a string or in to send it to standard output. So we will need to begin implementation of a type system for fostr.
2021-02-11 18:02:43 +00:00
Ex.Int = INT
Ex.LitString = <'<STRING_LITERAL>'>
Ex.Stream = <stream>
Ex.Sum = <<Ex> + <Ex>> {left}
Ex.Gets = [[Ex] << [Ex]] {left}
Ex.To = [[Ex] >> [Ex]] {left}
feat: sequencing of expressions with newline to same indent (#11) feat: sequencing of expressions with newline to same indent Also revised README to reflect greater emphasis on streams. Haskell code generation unsurprisingly required a fairly significant rework. Resolves #3. Co-authored-by: Glen Whitney <glen@studioinfinity.org> Reviewed-on: https://code.studioinfinity.org/glen/fostr/pulls/11 Co-Authored-By: Glen Whitney <glen@nobody@nowhere.net> Co-Committed-By: Glen Whitney <glen@nobody@nowhere.net>
2021-02-06 05:11:41 +00:00
feat: Add syntax for string literals Also rudimentary code generation. The difficulty is that for Haskell generation, we need to know whether an expression is a string or in to send it to standard output. So we will need to begin implementation of a type system for fostr.
2021-02-11 18:02:43 +00:00
Ex = <(<Ex>)> {bracket}
chore: Switch to this repository from predecessor
2021-01-30 23:37:53 +00:00
context-free priorities
feat: sequencing of expressions with newline to same indent (#11) feat: sequencing of expressions with newline to same indent Also revised README to reflect greater emphasis on streams. Haskell code generation unsurprisingly required a fairly significant rework. Resolves #3. Co-authored-by: Glen Whitney <glen@studioinfinity.org> Reviewed-on: https://code.studioinfinity.org/glen/fostr/pulls/11 Co-Authored-By: Glen Whitney <glen@nobody@nowhere.net> Co-Committed-By: Glen Whitney <glen@nobody@nowhere.net>
2021-02-06 05:11:41 +00:00
Ex.To
feat: Implement enters operator >> (#8) Also adds parenthesization of fostr expressions. Recasts code generation in terms of bottomup processing of a local strategy. Resolves #1. Co-authored-by: Glen Whitney <glen@studioinfinity.org> Reviewed-on: https://code.studioinfinity.org/glen/fostr/pulls/8 Co-Authored-By: Glen Whitney <glen@nobody@nowhere.net> Co-Committed-By: Glen Whitney <glen@nobody@nowhere.net>
2021-02-01 01:46:31 +00:00
> Ex.Sum
feat: sequencing of expressions with newline to same indent (#11) feat: sequencing of expressions with newline to same indent Also revised README to reflect greater emphasis on streams. Haskell code generation unsurprisingly required a fairly significant rework. Resolves #3. Co-authored-by: Glen Whitney <glen@studioinfinity.org> Reviewed-on: https://code.studioinfinity.org/glen/fostr/pulls/11 Co-Authored-By: Glen Whitney <glen@nobody@nowhere.net> Co-Committed-By: Glen Whitney <glen@nobody@nowhere.net>
2021-02-06 05:11:41 +00:00
> Ex.Gets,
chore: Switch to this repository from predecessor
2021-01-30 23:37:53 +00:00
// prevent cycle: no singletons
feat: Allow expressions to be terminated/sequenced by ; Note that ultimately a terminated sequence may have a slightly different semantics (applying streams to `_|_`, most likely) but for now they don't.
2021-02-10 20:47:34 +00:00
LineSeq.Sequence <0> .> Line+ = Line
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