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func_call.go
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74 lines (65 loc) · 1.53 KB
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package validate
import (
"errors"
"fmt"
"github.com/kyleconroy/sqlc/internal/sql/ast"
"github.com/kyleconroy/sqlc/internal/sql/astutils"
"github.com/kyleconroy/sqlc/internal/sql/catalog"
"github.com/kyleconroy/sqlc/internal/sql/sqlerr"
)
type funcCallVisitor struct {
catalog *catalog.Catalog
err error
}
func (v *funcCallVisitor) Visit(node ast.Node) astutils.Visitor {
if v.err != nil {
return nil
}
call, ok := node.(*ast.FuncCall)
if !ok {
return v
}
fn := call.Func
if fn == nil {
return v
}
// Custom validation for sqlc.arg
// TODO: Replace this once type-checking is implemented
if fn.Schema == "sqlc" {
if fn.Name != "arg" {
v.err = sqlerr.FunctionNotFound("sqlc." + fn.Name)
return nil
}
if call.Args == nil || len(call.Args.Items) == 0 {
return v
}
if len(call.Args.Items) > 1 {
v.err = &sqlerr.Error{
Message: fmt.Sprintf("expected 1 parameter to sqlc.arg; got %d", len(call.Args.Items)),
Location: call.Pos(),
}
return nil
}
switch n := call.Args.Items[0].(type) {
case *ast.A_Const:
case *ast.ColumnRef:
default:
v.err = &sqlerr.Error{
Message: fmt.Sprintf("expected parameter to sqlc.arg to be string or reference; got %T", n),
Location: call.Pos(),
}
return nil
}
}
fun, err := v.catalog.ResolveFuncCall(call)
if fun != nil || errors.Is(err, sqlerr.NotFound) {
return v
}
v.err = err
return nil
}
func FuncCall(c *catalog.Catalog, n ast.Node) error {
visitor := funcCallVisitor{catalog: c}
astutils.Walk(&visitor, n)
return visitor.err
}