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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| // | ||
| // Copyright (c) 2024 Markku Rossi | ||
| // | ||
| // All rights reserved. | ||
| // | ||
|
|
||
| package ast | ||
|
|
||
| import ( | ||
| "slices" | ||
|
|
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| "github.com/markkurossi/mpc/compiler/ssa" | ||
| "github.com/markkurossi/mpc/types" | ||
| ) | ||
|
|
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| func indexOfs(idx *Index, block *ssa.Block, ctx *Codegen, gen *ssa.Generator) ( | ||
| *ssa.Block, *LRValue, types.Info, types.Info, types.Size, error) { | ||
| undef := types.Undefined | ||
|
|
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| lv := idx | ||
|
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| var err error | ||
| var values []ssa.Value | ||
| var indices []arrayIndex | ||
| var lrv *LRValue | ||
|
|
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| for lrv == nil { | ||
| block, values, err = idx.Index.SSA(block, ctx, gen) | ||
| if err != nil { | ||
| return nil, nil, undef, undef, 0, err | ||
| } | ||
| if len(values) != 1 { | ||
| return nil, nil, undef, undef, 0, | ||
| ctx.Errorf(idx.Index, "invalid index") | ||
| } | ||
| index, err := values[0].ConstInt() | ||
| if err != nil { | ||
| return nil, nil, undef, undef, 0, ctx.Error(idx.Index, err.Error()) | ||
| } | ||
| indices = append(indices, arrayIndex{ | ||
| i: index, | ||
| ast: idx.Index, | ||
| }) | ||
| switch i := idx.Expr.(type) { | ||
| case *Index: | ||
| idx = i | ||
|
|
||
| case *VariableRef: | ||
| lrv, _, _, err = ctx.LookupVar(block, gen, block.Bindings, i) | ||
| if err != nil { | ||
| return nil, nil, undef, undef, 0, err | ||
| } | ||
|
|
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| default: | ||
| return nil, nil, undef, undef, 0, ctx.Errorf(idx.Expr, | ||
| "invalid operation: cannot index %v (%T)", | ||
| idx.Expr, idx.Expr) | ||
| } | ||
| } | ||
| slices.Reverse(indices) | ||
|
|
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| lrv = lrv.Indirect() | ||
| baseType := lrv.ValueType() | ||
| elType := baseType | ||
| var offset types.Size | ||
|
|
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| for _, index := range indices { | ||
| if !elType.Type.Array() { | ||
| return nil, nil, undef, undef, 0, ctx.Errorf(index.ast, | ||
| "indexing non-array %s (%s)", lv.Expr, elType) | ||
| } | ||
| if index.i >= elType.ArraySize { | ||
| return nil, nil, undef, undef, 0, ctx.Errorf(index.ast, | ||
| "invalid array index %d (out of bounds for %d-element array)", | ||
| index.i, elType.ArraySize) | ||
| } | ||
| offset += index.i * elType.ElementType.Bits | ||
| elType = *elType.ElementType | ||
| } | ||
|
|
||
| return block, lrv, baseType, elType, offset, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| // | ||
| // Copyright (c) 2024 Markku Rossi | ||
| // | ||
| // All rights reserved. | ||
| // | ||
|
|
||
| package utils | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "path/filepath" | ||
| "runtime" | ||
| "strings" | ||
| ) | ||
|
|
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| func Tracef(format string, a ...interface{}) { | ||
| var filename string | ||
| var linenum int | ||
|
|
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| for skip := 1; ; skip++ { | ||
| pc, file, line, ok := runtime.Caller(skip) | ||
| if !ok { | ||
| break | ||
| } | ||
| f := runtime.FuncForPC(pc) | ||
| if f != nil && strings.HasSuffix(f.Name(), ".errf") { | ||
| continue | ||
| } | ||
|
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| filename = filepath.Base(file) | ||
| linenum = line | ||
| break | ||
| } | ||
|
|
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| if len(filename) > 0 { | ||
| fmt.Printf("%s:%d: ", filename, linenum) | ||
| } | ||
| msg := fmt.Sprintf(format, a...) | ||
| if msg[len(msg)-1] != '\n' { | ||
| msg += "\n" | ||
| } | ||
| fmt.Print(msg) | ||
| } |
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