41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
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// This package contains utility functions used by pkg/proc to generate
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// ast.Expr expressions.
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package astutil
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import (
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"go/ast"
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"go/token"
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"strconv"
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)
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// Eql returns an expression evaluating 'x == y'.
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func Eql(x, y ast.Expr) *ast.BinaryExpr {
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return &ast.BinaryExpr{Op: token.EQL, X: x, Y: y}
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}
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// Sel returns an expression evaluating 'x.sel'.
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func Sel(x ast.Expr, sel string) *ast.SelectorExpr {
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return &ast.SelectorExpr{X: x, Sel: &ast.Ident{Name: sel}}
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}
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// PkgVar returns an expression evaluating 'pkg.v'.
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func PkgVar(pkg, v string) *ast.SelectorExpr {
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return &ast.SelectorExpr{X: &ast.Ident{Name: pkg}, Sel: &ast.Ident{Name: v}}
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}
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// Int returns an expression representing the integer 'n'.
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func Int(n int64) *ast.BasicLit {
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return &ast.BasicLit{Kind: token.INT, Value: strconv.FormatInt(n, 10)}
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}
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// And returns an expression evaluating 'x && y'.
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func And(x, y ast.Expr) *ast.BinaryExpr {
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return &ast.BinaryExpr{Op: token.LAND, X: x, Y: y}
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}
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// Or returns an expression evaluating 'x || y'.
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func Or(x, y ast.Expr) *ast.BinaryExpr {
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return &ast.BinaryExpr{Op: token.LOR, X: x, Y: y}
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}
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