asegavac/boring-lang
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

fix parsing

Browse Source
This commit is contained in:
Andrew Segavac
2025-10-09 17:40:54 -06:00
parent 4e981a69a8
commit 7cad512010
14 changed files with 520 additions and 214 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
packages/boringlang/src/parse/grammar.ts
View File

@@ -4,8 +4,8 @@ export const boringGrammar = ohm.grammar(String.raw`
Boringlang {
ReturnStatement = "return" Expression ";"
LetStatement = "let" identifier (":" TypeUsage)? "=" Expression ";"
AssignmentStatement = VariableUsage "=" Expression ";"
| StructGetter "=" Expression ";"
AssignmentStatement = identifier "=" Expression ";" -- identifier
| StructGetter "=" Expression ";" -- getter
ExpressionStatement = Expression ";"
Statement = ExpressionStatement
| LetStatement
@@ -19,27 +19,33 @@ export const boringGrammar = ohm.grammar(String.raw`
LiteralStructField = identifier ":" Expression
LiteralStruct = identifier "{" ListOf<LiteralStructField, ","> "}"
identifier = (letter | "_")+(letter | digit | "_")*
FunctionCall = Expression "(" ListOf<Expression, ","> ")"
StructGetter = Expression "." identifier
VariableUsage = identifier
IfExpression = "if" "(" Expression ")" Block ("else" Block)?
Term = LiteralInt
Path = Path "::" identifier -- nested
| identifier -- base
PrimaryExpression = LiteralInt
| LiteralFloat
| LiteralBool
| LiteralString
| LiteralStruct
| IfExpression
| Block
| Path -- path
| "(" Expression ")" -- parens
| VariableUsage
Factor = Factor "*" Term -- mult
| Factor "/" Term -- div
| Term
Expression = Expression "+" Factor -- plus
| Expression "-" Factor -- minus
| StructGetter
| FunctionCall
| Factor
StructExpression = LiteralStruct
| Block
| IfExpression
| PrimaryExpression
MemberExpression = MemberExpression "." identifier -- structGetter
| StructExpression
CallExpression = CallExpression "." identifier -- structGetter
| CallExpression "(" ListOf<Expression, ","> ")" -- functionCall
| MemberExpression "(" ListOf<Expression, ","> ")" -- memberFunctionCall
| MemberExpression
MultExpression = MultExpression "*" CallExpression -- mult
| MultExpression "/" CallExpression -- div
| CallExpression
AddExpression = Expression "+" MultExpression -- plus
| Expression "-" MultExpression -- minus
| MultExpression
Expression = AddExpression
Block = "{" Statement* Expression? "}"
NamedTypeUsage = identifier
TypeUsage = NamedTypeUsage