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Improved SSA and added unused value checks
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This commit is contained in:
Eduard Urbach 2025-06-23 23:11:05 +02:00
parent cc2e98ca49
commit 2b703e9af2
Signed by: akyoto
GPG key ID: 49226B848C78F6C8
25 changed files with 519 additions and 213 deletions
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37
src/core/Evaluate.go
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@ -10,7 +10,7 @@ import (
)
// Evaluate converts an expression to an SSA value.
func (f *Function) Evaluate(expr *expression.Expression) (*ssa.Value, error) {
func (f *Function) Evaluate(expr *expression.Expression) (ssa.Value, error) {
if expr.IsLeaf() {
switch expr.Token.Kind {
case token.Identifier:
@ -30,12 +30,16 @@ func (f *Function) Evaluate(expr *expression.Expression) (*ssa.Value, error) {
return nil, err
}
return f.AppendInt(number), nil
v := f.AppendInt(number)
v.Source = expr.Token
return v, nil
case token.String:
data := expr.Token.Bytes(f.File.Bytes)
data = Unescape(data)
return f.AppendBytes(data), nil
v := f.AppendBytes(data)
v.Source = expr.Token
return v, nil
}
return nil, errors.New(InvalidExpression, f.File, expr.Token.Position)
@ -44,7 +48,7 @@ func (f *Function) Evaluate(expr *expression.Expression) (*ssa.Value, error) {
switch expr.Token.Kind {
case token.Call:
children := expr.Children
typ := ssa.Call
isSyscall := false
if children[0].Token.Kind == token.Identifier {
funcName := children[0].String(f.File.Bytes)
@ -56,11 +60,11 @@ func (f *Function) Evaluate(expr *expression.Expression) (*ssa.Value, error) {
if funcName == "syscall" {
children = children[1:]
typ = ssa.Syscall
isSyscall = true
}
}
args := make([]*ssa.Value, len(children))
args := make([]ssa.Value, len(children))
for i, child := range children {
value, err := f.Evaluate(child)
@ -72,12 +76,27 @@ func (f *Function) Evaluate(expr *expression.Expression) (*ssa.Value, error) {
args[i] = value
}
call := f.Append(ssa.Value{Type: typ, Args: args})
return call, nil
if isSyscall {
v := f.Append(&ssa.Syscall{
Arguments: ssa.Arguments{Args: args},
HasToken: ssa.HasToken{Source: expr.Token},
})
return v, nil
} else {
v := f.Append(&ssa.Call{
Arguments: ssa.Arguments{Args: args},
HasToken: ssa.HasToken{Source: expr.Token},
})
return v, nil
}
case token.Dot:
name := fmt.Sprintf("%s.%s", expr.Children[0].String(f.File.Bytes), expr.Children[1].String(f.File.Bytes))
return f.AppendFunction(name), nil
v := f.AppendFunction(name)
v.Source = expr.Children[1].Token
return v, nil
}
return nil, nil