61c0a34253
Ensure identifiers start with alphabetical character Rename parse_variable_name -> parse_column_name Add DB value parsers and condition parser placeholder Fix number parser, basic condition parser Move select parser to select module Add create statement parser Move condition parser to common; add delete statement parser Add drop statement parser Add insert parser Add update parser, combine operation parsers into one Add initial validation, fix compiler warnings Validation WIP Allow more spaces in create statement, update TableSchema struct Add create index parser and validator Add todo in parse_identifier Rework the new structure, many other changes
41 lines
No EOL
1.2 KiB
Rust
41 lines
No EOL
1.2 KiB
Rust
use minisql::{operation::Operation, schema::TableSchema};
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use nom::{branch::alt, multi::many0, IResult};
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use crate::{create::parse_create, delete::parse_delete, index::parse_create_index, insert::parse_insert, select::parse_select, validation::{validate_operation, ValidationError}};
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#[derive(Debug)]
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pub enum Error {
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ParsingError(String),
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ValidationError(ValidationError)
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}
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pub fn parse_statement<'a>(input: &'a str) -> IResult<&str, Operation> {
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alt((
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parse_insert,
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parse_create,
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parse_delete,
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//parse_drop,
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parse_select,
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// parse_update,
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parse_create_index
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))(input)
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}
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pub fn parse_statements<'a>(input: &'a str) -> IResult<&str, Vec<Operation>> {
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many0(parse_statement)(input)
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}
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pub fn parse_and_validate(query: String, db_metadata: &Vec<(String, &TableSchema)>) -> Result<Operation, Error> {
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let (_, op) = parse_statement(query.as_str())
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.map_err(|err| {
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Error::ParsingError(err.to_string())
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})?;
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validate_operation(&op, db_metadata).map_err(|err| Error::ValidationError(err))?;
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Ok(op)
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}
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// #[test]
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// fn test_select() {
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// parse_and_validate("SELECT * FROM users;".to_string(), &Vec::new()).unwrap();
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// }
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