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Merge pull request #815 from nspcc-dev/fix/stacksize
compiler: calculate stack size more precisely
This commit is contained in:
commit
6b4c66a807
2 changed files with 21 additions and 1 deletions
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@ -3,6 +3,8 @@ package compiler_test
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import (
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"math/big"
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"testing"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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)
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var assignTestCases = []testCase{
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@ -133,3 +135,18 @@ var assignTestCases = []testCase{
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func TestAssignments(t *testing.T) {
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runTestCases(t, assignTestCases)
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}
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func TestManyAssignments(t *testing.T) {
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src1 := `package foo
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func Main() int {
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a := 0
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`
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src2 := `return a
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}`
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for i := 0; i < vm.MaxArraySize; i++ {
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src1 += "a += 1\n"
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}
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eval(t, src1+src2, big.NewInt(vm.MaxArraySize))
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}
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@ -2,6 +2,7 @@ package compiler
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import (
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"go/ast"
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"go/token"
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)
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// A funcScope represents the scope within the function context.
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@ -76,7 +77,9 @@ func (c *funcScope) stackSize() int64 {
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ast.Inspect(c.decl, func(n ast.Node) bool {
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switch n := n.(type) {
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case *ast.AssignStmt:
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if n.Tok == token.DEFINE {
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size += len(n.Rhs)
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}
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case *ast.ReturnStmt, *ast.IfStmt:
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size++
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// This handles the inline GenDecl like "var x = 2"
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