Delete: Remove Nearley grammar file for Chevrotain migration

This commit is contained in:
2025-09-26 08:04:03 -07:00
parent 07ed9ec1e5
commit 4e0782831e

View File

@@ -1,126 +0,0 @@
@{%
const moo = require('moo');
const lexer = moo.compile({
ws: /[ \t]+/,
nl: { match: /\n/, lineBreaks: true },
comment: /\/\/.*?$/,
number: /0|[1-9][0-9]*(\.[0-9]+)?/,
string: /"(?:\\["\\]|[^\n"\\])*"/,
lbrace: '{',
rbrace: '}',
lparen: '(',
rparen: ')',
dot: '.',
plus: '+',
comma: ',',
colon: ':',
eq: '=',
identifier: /[a-zA-Z_][a-zA-Z0-9_]*/,
});
%}
@lexer lexer
Program -> _ Statements _ {% ([,,stmts]) => ({ type: 'Program', body: stmts }) %}
Statements -> Statement (_NL Statement):* _ {%
(d) => {
const stmts = [d[0]];
for (const rest of d[1]) {
stmts.push(rest[1]);
}
return stmts.filter(s => s !== null && s.type !== 'Comment');
}
%}
Statement -> Declaration {% id %}
| Assignment {% id %}
| ExpressionStatement {% id %}
| Comment {% id %}
ExpressionStatement -> Expression {% (d) => ({ type: 'ExpressionStatement', expression: d[0] }) %}
Comment -> %comment {% d => ({ type: 'Comment', value: d[0].value }) %}
Declaration -> %identifier _ %colon _ Expression {%
(d) => ({
type: 'VariableDeclaration',
identifier: d[0].value,
value: d[4]
})
%}
Assignment -> %identifier _ %eq _ Expression {%
(d) => ({
type: 'Assignment',
identifier: d[0].value,
value: d[4]
})
%}
# Expression parsing hierarchy to handle operator precedence
Expression -> Additive {% id %}
Additive -> Additive _ %plus _ Call {% (d) => ({ type: 'BinaryExpression', operator: '+', left: d[0], right: d[4] }) %}
| Call {% id %}
Call -> Member ( %lparen _ (ArgumentList):? _ %rparen ):? {%
(d) => {
if (d[1]) { // It is a function call
return {
type: 'CallExpression',
callee: d[0],
arguments: d[1][2] || []
}
}
return d[0]; // Not a call, just a Member/Primary expression
}
%}
Member -> Primary ( %dot %identifier ):* {%
(d) => {
let obj = d[0];
for (const part of d[1]) {
obj = {
type: 'MemberExpression',
object: obj,
property: { type: 'Identifier', name: part[1].value }
}
}
return obj;
}
%}
Primary -> Literal {% id %}
| Block {% id %}
| Identifier {% id %}
| %lparen _ Expression _ %rparen {% (d) => d[2] %}
ArgumentList -> Expression ( _ %comma _ Expression):* {%
(d) => [d[0], ...d[1].map(m => m[3])]
%}
Identifier -> %identifier {% d => ({ type: 'Identifier', name: d[0].value }) %}
Literal -> %number {% d => ({ type: 'NumericLiteral', value: Number(d[0].value) }) %}
| %string {% d => ({ type: 'StringLiteral', value: d[0].value }) %}
Block -> %lbrace _ (KeyValuePairs):? _ %rparen {%
(d) => ({ type: 'Block', properties: d[2] || [] })
%}
KeyValuePairs -> KeyValuePair (_NL KeyValuePair):* {%
(d) => [d[0], ...d[1].map(m => m[1])]
%}
KeyValuePair -> %identifier _ %colon _ Expression {%
(d) => ({
type: 'Property',
key: d[0].value,
value: d[4]
})
%}
_ -> (%ws | %comment):* {% () => null %}
_NL -> (_ %nl):+ {% () => null %}