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use crate::function::{Func, ScalarFunc};
use crate::translate::{
emitter::Resolver,
expr::{sanitize_string, translate_expr},
ProgramBuilder, ProgramBuilderOpts,
};
use crate::util::normalize_ident;
use crate::vdbe::insn::Insn;
use crate::{sync::Arc, Connection, Result};
use turso_parser::ast::{Expr, Literal};
/// Translate ATTACH statement
pub fn translate_attach(
expr: &Expr,
resolver: &Resolver,
db_name: &Expr,
key: &Option<Box<Expr>>,
program: &mut ProgramBuilder,
connection: Arc<Connection>,
) -> Result<()> {
if !connection.experimental_attach_enabled() {
return Err(crate::LimboError::ParseError(
"ATTACH is an experimental feature. Enable with --experimental-attach flag".to_string(),
));
}
// SQLite treats ATTACH as a function call to sqlite_attach(filename, dbname, key)
// We'll allocate registers for the arguments and call the function
program.extend(&ProgramBuilderOpts::new(0, 10, 0));
let arg_reg = program.alloc_registers(4); // 3 for args + 1 for result
// Load filename argument
// Handle different expression types as string literals for filenames
match expr {
Expr::Literal(Literal::String(s)) => {
// For ATTACH, string literals should be used directly (without quotes)
program.emit_insn(Insn::String8 {
value: sanitize_string(s),
dest: arg_reg,
});
}
Expr::Qualified(_, _) => {
// For ATTACH, qualified expressions like "foo.db" should be treated as filename strings
let filename = expr.to_string();
program.emit_insn(Insn::String8 {
value: filename,
dest: arg_reg,
});
}
Expr::Id(id) => {
// For ATTACH, identifiers should be treated as filename strings
program.emit_insn(Insn::String8 {
value: normalize_ident(id.as_str()),
dest: arg_reg,
});
}
_ => {
translate_expr(program, None, expr, arg_reg, resolver)?;
}
}
// Load database name argument
// Handle different expression types as string literals for database names
match db_name {
Expr::Literal(Literal::String(s)) => {
// For ATTACH, string literals should be used directly (without quotes)
program.emit_insn(Insn::String8 {
value: sanitize_string(s),
dest: arg_reg + 1,
});
}
Expr::Qualified(_, _) => {
// For ATTACH, qualified expressions should be treated as name strings
let db_name_str = format!("{db_name}");
program.emit_insn(Insn::String8 {
value: db_name_str,
dest: arg_reg + 1,
});
}
Expr::Id(id) => {
// For ATTACH, identifiers should be treated as name strings
// Use normalize_ident to strip quotes from double-quoted identifiers
program.emit_insn(Insn::String8 {
value: normalize_ident(id.as_str()),
dest: arg_reg + 1,
});
}
_ => {
translate_expr(program, None, db_name, arg_reg + 1, resolver)?;
}
}
// Load key argument (NULL if not provided)
if let Some(key_expr) = key {
translate_expr(program, None, key_expr, arg_reg + 2, resolver)?;
} else {
program.emit_insn(Insn::Null {
dest: arg_reg + 2,
dest_end: None,
});
}
// Call sqlite_attach function
program.emit_insn(Insn::Function {
constant_mask: 0,
start_reg: arg_reg,
dest: arg_reg + 3, // Result register (not used but required)
func: crate::function::FuncCtx {
func: Func::Scalar(ScalarFunc::Attach),
arg_count: 3,
},
});
Ok(())
}
/// Translate DETACH statement
pub fn translate_detach(
expr: &Expr,
resolver: &Resolver,
program: &mut ProgramBuilder,
connection: Arc<Connection>,
) -> Result<()> {
if !connection.experimental_attach_enabled() {
return Err(crate::LimboError::ParseError(
"DETACH is an experimental feature. Enable with --experimental-attach flag".to_string(),
));
}
// SQLite treats DETACH as a function call to sqlite_detach(dbname)
program.extend(&ProgramBuilderOpts::new(0, 5, 0));
let arg_reg = program.alloc_registers(2); // 1 for arg + 1 for result
// Load database name argument
// Handle different expression types as string literals for database names
match expr {
Expr::Literal(Literal::String(s)) => {
// For DETACH, string literals should be used directly (without quotes)
program.emit_insn(Insn::String8 {
value: sanitize_string(s),
dest: arg_reg,
});
}
Expr::Qualified(_, _) => {
// For DETACH, qualified expressions should be treated as name strings
let db_name_str = format!("{expr}");
program.emit_insn(Insn::String8 {
value: db_name_str,
dest: arg_reg,
});
}
Expr::Id(id) => {
// For DETACH, identifiers should be treated as name strings
// Use normalize_ident to strip quotes from double-quoted identifiers
program.emit_insn(Insn::String8 {
value: normalize_ident(id.as_str()),
dest: arg_reg,
});
}
_ => {
translate_expr(program, None, expr, arg_reg, resolver)?;
}
}
// Call sqlite_detach function
program.emit_insn(Insn::Function {
constant_mask: 0,
start_reg: arg_reg,
dest: arg_reg + 1, // Result register (not used but required)
func: crate::function::FuncCtx {
func: Func::Scalar(ScalarFunc::Detach),
arg_count: 1,
},
});
Ok(())
}