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compiler: process constant first in BinaryExpr handling

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This commit is contained in:
Evgenii Stratonikov 2020-08-23 12:24:03 +03:00
parent e5813ae8cd
commit e4af295080
1 changed files with 13 additions and 13 deletions
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26
pkg/compiler/codegen.go
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@ -689,6 +689,19 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
return nil return nil
case *ast.BinaryExpr: case *ast.BinaryExpr:
// The AST package will try to resolve all basic literals for us.
// If the typeinfo.Value is not nil we know that the expr is resolved
// and needs no further action. e.g. x := 2 + 2 + 2 will be resolved to 6.
// NOTE: Constants will also be automatically resolved be the AST parser.
// example:
// const x = 10
// x + 2 will results into 12
tinfo := c.typeAndValueOf(n)
if tinfo.Value != nil {
c.emitLoadConst(tinfo)
return nil
}
switch n.Op { switch n.Op {
case token.LAND: case token.LAND:
end := c.newLabel() end := c.newLabel()
@ -711,19 +724,6 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
return nil return nil
default: default:
// The AST package will try to resolve all basic literals for us.
// If the typeinfo.Value is not nil we know that the expr is resolved
// and needs no further action. e.g. x := 2 + 2 + 2 will be resolved to 6.
// NOTE: Constants will also be automatically resolved be the AST parser.
// example:
// const x = 10
// x + 2 will results into 12
tinfo := c.typeAndValueOf(n)
if tinfo.Value != nil {
c.emitLoadConst(tinfo)
return nil
}
var checkForNull bool var checkForNull bool
if isExprNil(n.X) { if isExprNil(n.X) {