Merge pull request 'fix-chained-methods' (#32) from fix-chained-methods into main

Reviewed-on: sashakoshka/fspl#32

analyzer/expression.go

@@ -131,11 +131,10 @@ func (this *Tree) analyzeMethodCall (
 	error,
 ) {
 	// get method
-	sourceExpr, err := this.analyzeExpression(nil, strict, call.Source)
+	source, err := this.analyzeExpression(nil, strict, call.Source)
-	source := sourceExpr.(*entity.Variable)
 	if err != nil { return nil, err }
 	method, err := this.analyzeMethodOrBehavior (
-		call.Position, source.Declaration.Type(), call.Name)
+		call.Position, source.Type(), call.Name)
 	if err != nil { return nil, err }
 
 	// extract signature

analyzer/method_test.go

@@ -53,3 +53,17 @@ StringHolder.[setString string:String] = {
 }
 `)
 }
+
+func TestMethodChained (test *testing.T) {
+testString (test,
+`
+Number: Int
+
+Number.[add x:Number]:Number = [+ [.this] x]
+Number.[sub x:Number]:Number = [- [.this] x]
+Number.[mul x:Number]:Number = [* [.this] x]
+Number.[div x:Number]:Number = [/ [.this] x]
+
+[main]: Number = [~Number 5].[add 8].[mul 3]
+`)
+}

analyzer/test-common.go

@@ -91,7 +91,7 @@ func testReader (test *testing.T, inputs ...io.Reader) {
 	tree := Tree { }
 	err := tree.Analyze(ast)
 	if err != nil {
-		test.Error("analyzer returned error:", err)
+		test.Error("analyzer returned error:\n" + errors.Format(err))
 		return
 	}
 }

generator/function_test.go

@@ -105,6 +105,80 @@ Number.[number]: Int = [.this]
 `)
 }
 
+func TestMethodChained (test *testing.T) {
+testString (test,
+`%Number = type i64
+define %Number @main() {
+0:
+	%1 = alloca i64
+	store i64 5, ptr %1
+	%2 = call %Number @Number.add(ptr %1, i64 8)
+	%3 = alloca %Number
+	store %Number %2, ptr %3
+	%4 = call %Number @Number.mul(ptr %3, i64 3)
+	ret %Number %4
+}
+define %Number @Number.mul(ptr %this, %Number %x) {
+0:
+	%1 = alloca ptr
+	store ptr %this, ptr %1
+	%2 = alloca %Number
+	store %Number %x, ptr %2
+	%3 = load ptr, ptr %1
+	%4 = load %Number, ptr %3
+	%5 = load %Number, ptr %2
+	%6 = mul %Number %4, %5
+	ret %Number %6
+}
+define %Number @Number.add(ptr %this, %Number %x) {
+0:
+	%1 = alloca ptr
+	store ptr %this, ptr %1
+	%2 = alloca %Number
+	store %Number %x, ptr %2
+	%3 = load ptr, ptr %1
+	%4 = load %Number, ptr %3
+	%5 = load %Number, ptr %2
+	%6 = add %Number %4, %5
+	ret %Number %6
+}
+define %Number @Number.div(ptr %this, %Number %x) {
+0:
+	%1 = alloca ptr
+	store ptr %this, ptr %1
+	%2 = alloca %Number
+	store %Number %x, ptr %2
+	%3 = load ptr, ptr %1
+	%4 = load %Number, ptr %3
+	%5 = load %Number, ptr %2
+	%6 = sdiv %Number %4, %5
+	ret %Number %6
+}
+define %Number @Number.sub(ptr %this, %Number %x) {
+0:
+	%1 = alloca ptr
+	store ptr %this, ptr %1
+	%2 = alloca %Number
+	store %Number %x, ptr %2
+	%3 = load ptr, ptr %1
+	%4 = load %Number, ptr %3
+	%5 = load %Number, ptr %2
+	%6 = sub %Number %4, %5
+	ret %Number %6
+}
+`,
+`
+Number: Int
+
+Number.[add x:Number]:Number = [+ [.this] x]
+Number.[sub x:Number]:Number = [- [.this] x]
+Number.[mul x:Number]:Number = [* [.this] x]
+Number.[div x:Number]:Number = [/ [.this] x]
+
+[main]: Number = [~Number 5].[add 8].[mul 3]
+`)
+}
+
 func TestMethodGreeter (test *testing.T) {
 testString (test,
 `%Index = type i64

testcommon/common.go

@@ -17,7 +17,7 @@ func LogColumnsStyle (test *testing.T, style string, columns ...any) {
 	for index := range columns {
 		if index > 0 { formatString += " | " }
 	
-		if index == len(columns) {
+		if index == len(columns) - 1 {
 			formatString += "%v"
 		} else {
 			formatString += "%-80v"