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989489096e
This commit implements a massive refactor of the repository, and moves the build system over to use Mage (magefile.org) which should allow seamless building across multiple platforms.
83 lines
2.0 KiB
Go
83 lines
2.0 KiB
Go
// (c) Copyright 2016 Hewlett Packard Enterprise Development LP
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package gas
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import "go/ast"
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func resolveIdent(n *ast.Ident, c *Context) bool {
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if n.Obj == nil || n.Obj.Kind != ast.Var {
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return true
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}
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if node, ok := n.Obj.Decl.(ast.Node); ok {
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return TryResolve(node, c)
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}
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return false
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}
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func resolveAssign(n *ast.AssignStmt, c *Context) bool {
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for _, arg := range n.Rhs {
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if !TryResolve(arg, c) {
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return false
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}
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}
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return true
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}
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func resolveCompLit(n *ast.CompositeLit, c *Context) bool {
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for _, arg := range n.Elts {
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if !TryResolve(arg, c) {
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return false
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}
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}
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return true
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}
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func resolveBinExpr(n *ast.BinaryExpr, c *Context) bool {
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return (TryResolve(n.X, c) && TryResolve(n.Y, c))
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}
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func resolveCallExpr(n *ast.CallExpr, c *Context) bool {
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// TODO(tkelsey): next step, full function resolution
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return false
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}
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// TryResolve will attempt, given a subtree starting at some ATS node, to resolve
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// all values contained within to a known constant. It is used to check for any
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// unkown values in compound expressions.
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func TryResolve(n ast.Node, c *Context) bool {
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switch node := n.(type) {
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case *ast.BasicLit:
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return true
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case *ast.CompositeLit:
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return resolveCompLit(node, c)
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case *ast.Ident:
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return resolveIdent(node, c)
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case *ast.AssignStmt:
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return resolveAssign(node, c)
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case *ast.CallExpr:
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return resolveCallExpr(node, c)
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case *ast.BinaryExpr:
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return resolveBinExpr(node, c)
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}
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return false
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}
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