summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--src/texec/eval.go187
1 files changed, 100 insertions, 87 deletions
diff --git a/src/texec/eval.go b/src/texec/eval.go
index ac183c0..b3b4e27 100644
--- a/src/texec/eval.go
+++ b/src/texec/eval.go
@@ -131,24 +131,8 @@ func getNames(root tparse.Node) []string {
return []string{}
}
-func getModule(a TArtifact) *TModule {
- mod := prog
-
- for i := 0; i < len(a.Path); i++ {
- for j := 0; j < len(mod.Sub); j++ {
- if mod.Sub[j].Name == a.Path[i] {
- mod = &(mod.Sub[j])
- break
- }
- if j + 1 == len(mod.Sub) {
- errOut(fmt.Sprintf("Failed to find module %v", a))
- }
- }
- }
-
- return mod
-}
-
+// Attempt to get a module from a path starting at the given module
+// Returns nil if the module was not found.
func getModuleRelative(mod *TModule, a TArtifact) *TModule {
for i := 0; i < len(a.Path); i++ {
for j := 0; j < len(mod.Sub); j++ {
@@ -165,83 +149,92 @@ func getModuleRelative(mod *TModule, a TArtifact) *TModule {
return mod
}
-func getModuleInPath(a TArtifact) *TModule {
- mod := prog
- m := len(cart.Path)
-
- out := getModuleRelative(mod, a)
+// Attempt to get a module from the root module using a specified path
+// Returns nil if the module was not found.
+func getModule(a TArtifact) *TModule {
+ return getModuleRelative(prog, a)
+}
- for i := 0; i < m; i++ {
- for j := 0; j < len(mod.Sub); j++ {
- if mod.Sub[j].Name == cart.Path[i] {
- mod = &(mod.Sub[j])
- break
- }
- }
- tmp := getModuleRelative(mod, a)
- if tmp != nil {
- out = tmp
- }
- }
+// Get a module ion the current path.
+// Returns nil if the index is out of range.
+func getModuleInPath(p int) *TModule {
+ m := len(cart.Path)
- if out == nil {
- errOut(fmt.Sprintf("Failed to find module %d in path %v", m, cart))
+ if p < 0 || p > m {
+ return nil
}
- return out
+ return getModule( TArtifact{ cart.Path[:p] , "" } )
}
-// Find an artifact from a path and the root node
-func getNode(a TArtifact) *tparse.Node {
- mod := getModule(a)
+// Find an artifact from a name and the module to search
+// Returns nil if the node is not found in the module
+func getNode(mod *TModule, n string) *tparse.Node {
for i := 0; i < len(mod.Artifacts); i++ {
- n := getNames(mod.Artifacts[i])
- for j := 0; j < len(n); j++ {
- if n[j] == a.Name {
+ chk := getNames(mod.Artifacts[i])
+ for j := 0; j < len(chk); j++ {
+ if chk[j] == n {
return &(mod.Artifacts[i])
}
}
}
- errOut(fmt.Sprintf("Failed to find node %v", a))
return nil
}
-func getNodeRelative(s TArtifact) *tparse.Node {
+// This is a horrible way to search through nodes with this structure. O(n^3).
+// This could (and should) be made better by using a dictionary like structure for sub-modules and artifacts.
+// By sacrificing this type of tree it could probably get down to O(n^2) or even O(n) if you were good enough.
+// Most probably, the following is not how it will be implemented in the final version of the compiler.
+// If this wasn't a bootstrap/hoby project, I would probably fire myself for the following code.
- tmpmod := getModuleInPath(s)
- if tmpmod == nil {
- errOut(fmt.Sprintf("Failed to get module to resolve node: %v", s))
- }
+// Yes, I am aware that the following code is bad.
+// No, I don't care.
- for i := 0; i < len(tmpmod.Artifacts); i++ {
- n := getNames(tmpmod.Artifacts[i])
- for j := 0; j < len(n); j++ {
- if n[j] == s.Name {
- return &(tmpmod.Artifacts[i])
- }
+func searchNode(s TArtifact) *tparse.Node {
+
+ // i-- because we are doing a reverse lookup
+ for i := len(cart.Path); i >= 0; i-- { // O(n)
+ tst := getModuleInPath(i) // O(n^2) (O(n^3) total here)
+
+ tst = getModuleRelative(tst, s) // O(n^2) (O(n^3) total here)
+
+ if tst == nil {
+ continue
}
- }
- errOut(fmt.Sprintf("Failed to find node (relative) %v", s))
+ ret := getNode(tst, s.Name) // O(n^2) (O(n^3) total here)
+
+ if ret != nil {
+ return ret
+ }
+ } // Block total complexity 3*O(n^2) * O(n) = 3*O(n^3)
+
return nil
}
+// End block of complexity horror
+
func getModDefRelative(s TArtifact) *TVariable {
- tmpmod := getModuleInPath(s)
- if tmpmod == nil {
- errOut(fmt.Sprintf("Failed to get module to resolve artifact: %v", s))
- }
+ // i-- because we are doing a reverse lookup
+ for i := len(cart.Path); i >= 0; i-- { // O(n)
+ tst := getModuleInPath(i) // O(n^2) (O(n^3) total here)
+
+ tst = getModuleRelative(tst, s) // O(n^2) (O(n^3) total here)
+
+ if tst == nil {
+ continue
+ }
- val, prs := tmpmod.Defs[s.Name]
+ ret, prs := (*tst).Defs[s.Name] // O(n^2) (O(n^3) total here)
- if prs {
- return val
- }
+ if prs {
+ return ret
+ }
+ } // Block total complexity 3*O(n^2) * O(n) = 3*O(n^3)
- errOut(fmt.Sprintf("Failed to resolve mod def artifact (relative) %v", s))
return nil
}
@@ -408,6 +401,10 @@ func getLiteralComposite(v tparse.Node) []interface{} {
return out
}
+func getBoolLiteral(v tparse.Node) bool {
+ return v.Data.Data == "true"
+}
+
func getLiteral(v tparse.Node, t TType) interface{} {
if equateType(t, tInt) {
@@ -416,11 +413,29 @@ func getLiteral(v tparse.Node, t TType) interface{} {
return getCharLiteral(v)
} else if equateType(t, tString) {
return getStringLiteral(v)
+ } else if equateType(t, tBool) {
+ getBoolLiteral(v)
}
return getLiteralComposite(v)
}
+func getLiteralType(v tparse.Node) TType {
+ if v.Data.Data[0] == '"' {
+ return tString
+ } else if v.Data.Data[0] == '\'' {
+ return tCharp
+ } else if v.Data.Data == "comp" {
+ return tStruct
+ } else if v.Data.Data == "true" || v.Data.Data == "false" {
+ return tBool
+ } else {
+ return tInt
+ }
+
+ return tNull
+}
+
func compositeToStruct(str TArtifact, cmp []interface{}) VarMap {
sv := getModDefRelative(str)
@@ -471,8 +486,6 @@ func resolveArtifact(a TArtifact, ctx *VarMap) *TVariable {
errOutCTX(fmt.Sprintf("Could not resolve %s in the current context.", a.Name), *ctx)
}
return val
- } else {
-
}
return nil
@@ -520,7 +533,7 @@ func isArray(t TType, skp int) bool {
return t.Pre[skp] == "{}"
}
-func evalDotChain(v tparse.Node, ctx *VarMap, wk *TVariable) TVariable {
+func evalDotChain(v tparse.Node, ctx *VarMap, wk *TVariable) *TVariable {
var wrvm *VarMap
wrvm = ctx
@@ -537,7 +550,7 @@ func evalDotChain(v tparse.Node, ctx *VarMap, wk *TVariable) TVariable {
//
- return null
+ return &null
}
// Try to convert a value into a specific type
@@ -556,7 +569,19 @@ func evalSet(v tparse.Node, ctx *VarMap, val TVariable) {
// Parse a value node
func evalValue(v tparse.Node, ctx *VarMap) TVariable {
- if v.Data.Type == tparse.AUGMENT {
+ if v.Data.Type == tparse.LITERAL {
+ if v.Data.Data[0] == '"' {
+ return TVariable{tString, getStringLiteral(v)}
+ } else if v.Data.Data[0] == '\'' {
+ return TVariable{tCharp, getCharLiteral(v)}
+ } else if v.Data.Data == "comp" {
+ return TVariable{tStruct, getLiteralComposite(v)}
+ } else {
+ return TVariable{tInt, getIntLiteral(v)}
+ }
+ } else if v.Data.Type == tparse.DEFWORD {
+
+ } else if v.Data.Type == tparse.AUGMENT {
switch v.Data.Data {
case "=":
rval := evalValue(v.Sub[1], ctx)
@@ -601,21 +626,9 @@ func evalValue(v tparse.Node, ctx *VarMap) TVariable {
a := evalValue(v.Sub[0], ctx)
return TVariable{tBool, !(a.Data.(bool))}
case ".":
- return evalDotChain(v, ctx, &null)
+ return *evalDotChain(v, ctx, &null)
}
- } else if v.Data.Type == tparse.LITERAL {
- if v.Data.Data[0] == '"' {
- return TVariable{tString, getStringLiteral(v)}
- } else if v.Data.Data[0] == '\'' {
- return TVariable{tCharp, getCharLiteral(v)}
- } else if v.Data.Data == "comp" {
- return TVariable{tStruct, getLiteralComposite(v)}
- } else {
- return TVariable{tInt, getIntLiteral(v)}
- }
- } else if v.Data.Type == tparse.DEFWORD {
-
- }
+ }
return null
}
@@ -670,7 +683,7 @@ func EvalTNSL(root *TModule, args string) TVariable {
"" },
sarg }
- mainNod := getNode(cart)
+ mainNod := getNode(prog, "main")
fmt.Println(mainNod)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 03:18:11 +0000