mirror of https://github.com/pulumi/pulumi.git
76 lines
1.5 KiB
Go
76 lines
1.5 KiB
Go
package gen
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/hashicorp/hcl/v2"
|
|
"github.com/pulumi/pulumi/pkg/v3/codegen/hcl2/model"
|
|
)
|
|
|
|
type spillFunc func(x model.Expression) (string, model.Expression, bool)
|
|
|
|
type spillTemp struct {
|
|
Kind string
|
|
Variable *model.Variable
|
|
Value model.Expression
|
|
}
|
|
|
|
type spills struct {
|
|
counts map[string]int
|
|
}
|
|
|
|
func (s *spills) newTemp(kind string, value model.Expression) *spillTemp {
|
|
i := s.counts[kind]
|
|
s.counts[kind] = i + 1
|
|
|
|
v := &model.Variable{
|
|
Name: fmt.Sprintf("%s%d", kind, i),
|
|
VariableType: value.Type(),
|
|
}
|
|
return &spillTemp{
|
|
Variable: v,
|
|
Value: value,
|
|
}
|
|
}
|
|
|
|
type spiller struct {
|
|
spills *spills
|
|
|
|
temps []*spillTemp
|
|
spill spillFunc
|
|
disabled bool
|
|
}
|
|
|
|
func (s *spiller) preVisit(x model.Expression) (model.Expression, hcl.Diagnostics) {
|
|
_, isfn := x.(*model.AnonymousFunctionExpression)
|
|
if isfn {
|
|
s.disabled = true
|
|
}
|
|
return x, nil
|
|
}
|
|
|
|
func (s *spiller) postVisit(x model.Expression) (model.Expression, hcl.Diagnostics) {
|
|
_, isfn := x.(*model.AnonymousFunctionExpression)
|
|
if isfn {
|
|
s.disabled = false
|
|
} else if !s.disabled {
|
|
if kind, value, ok := s.spill(x); ok {
|
|
t := s.spills.newTemp(kind, value)
|
|
s.temps = append(s.temps, t)
|
|
return model.VariableReference(t.Variable), nil
|
|
}
|
|
}
|
|
return x, nil
|
|
}
|
|
|
|
func (g *generator) rewriteSpills(
|
|
x model.Expression, spill spillFunc,
|
|
) (model.Expression, []*spillTemp, hcl.Diagnostics) {
|
|
spiller := &spiller{
|
|
spills: g.spills,
|
|
spill: spill,
|
|
}
|
|
x, diags := model.VisitExpression(x, spiller.preVisit, spiller.postVisit)
|
|
return x, spiller.temps, diags
|
|
}
|