Created testing framework for parser

parser/expression.go

@@ -133,10 +133,7 @@ func (this *BitCast) String () string {
 // be assigned to interfaces. An operation is never a valid location expression.
 type Operation struct {
 	Pos lexer.Position
-	Operator string `parser:" '[' @('+' | '++' | '-'  | '--' | '*'  | '/' |
-	                                '%' | '!!' | '||' | '&&' | '^^' | '!' |
-	                                '|' | '&'  | '^'  | '<<' | '>>' | '<' |
-	                                '>' | '<=' | '>=' | '=')             "`
+	Operator string `parser:" '[' @('+' | '++' | '-'  | '--' | '*'  | '/' | '%' | '!!' | '||' | '&&' | '^^' | '!' | '|' | '&'  | '^'  | '<<' | '>>' | '<' | '>' | '<=' | '>=' | '=')             "`
 	Arguments []Expression `parser:" @@+ ']'                             "`
 }
 func (*Operation) expression(){}
@@ -174,8 +171,8 @@ func (this *Block) String () string {
 // struct being accessed is.
 type MemberAccess struct {
 	Pos lexer.Position
-	Source Expression  `parser:"     @@ "`
-	Member string      `parser:" '.' @@ "`
+	Source Expression  `parser:"     @@     "`
+	Member string      `parser:" '.' @Ident "`
 }
 func (*MemberAccess) expression(){}
 func (this *MemberAccess) String () string {
@@ -187,8 +184,8 @@ func (this *MemberAccess) String () string {
 // method access is never a valid location expression.
 type MethodAccess struct {
 	Pos lexer.Position
-	Source Expression  `parser:"      @@ "`
-	Member string      `parser:" '::' @@ "`
+	Source Expression  `parser:"      @@     "`
+	Member string      `parser:" '::' @Ident "`
 }
 func (*MethodAccess) expression(){}
 func (this *MethodAccess) String () string {
@@ -235,7 +232,7 @@ func (this *Loop) String () string {
 // to anything. It is never a valid location expression.
 type Break struct {
 	Pos   lexer.Position
-	Value Expression `parser:" '[' 'break' @@? " ']'`
+	Value Expression `parser:" '[' 'break' @@? ']' "`
 }
 func (*Break) expression(){}
 func (this *Break) String () string {
@@ -248,7 +245,7 @@ func (this *Break) String () string {
 // to anything. A return statement is never a valid location expression.
 type Return struct {
 	Pos   lexer.Position
-	Value Expression `parser:" '[' 'return' @@? " ']'`
+	Value Expression `parser:" '[' 'return' @@? ']' "`
 }
 func (*Return) expression(){}
 func (this *Return) String () string {

parser/parser_test.go

@@ -0,0 +1,9 @@
+package parser
+
+import "testing"
+
+func TestType (test *testing.T) {
+testString (test,
+`Hello:Int`,
+`Hello: Int`)
+}

parser/test-common.go

@@ -0,0 +1,32 @@
+package parser
+
+import "io"
+import "fmt"
+import "testing"
+import "strings"
+
+func testString (test *testing.T, correct, input string) {
+	testReader(test, correct, strings.NewReader(input))
+}
+
+func testReader (test *testing.T, correct string, inputs ...io.Reader) {
+	tree := Tree { }
+	for index, stream := range inputs {
+		err := tree.Parse(fmt.Sprintf("stream%d.fspl", index), stream)
+		if err != nil {
+			test.Error("parser returned error: ", err)
+			return
+		}
+	}
+	
+	got := tree.String()
+	if got != correct {
+		test.Log("strings do not match")
+		test.Log("tree.String():")
+		test.Log(got)
+		test.Log("correct:")
+		test.Log(correct)
+		test.Fail()
+		return
+	}
+}

parser/toplevel.go

@@ -12,9 +12,9 @@ type TopLevel interface {
 type Typedef struct {
 	// Syntax
 	Pos lexer.Position
-	Public bool   `parser: " @'+'?  "`
-	Name   string `parser: " @Ident "`
-	Type   Type   `parser: " ':' @@ "`
+	Public bool   `parser:" @'+'?  "`
+	Name   string `parser:" @Ident "`
+	Type   Type   `parser:" ':' @@ "`
 
 	// Semantics
 	Methods map[string] Method
@@ -38,9 +38,9 @@ func (this *Typedef) String () string {
 type Function struct {
 	// Syntax
 	Pos lexer.Position
-	Public    bool       `parser: " @'+'?       "`
-	Signature            `parser: " @@          "`
-	Body      Expression `parser: " ( '=' @@ )? "`
+	Public    bool       `parser:" @'+'?       "`
+	Signature            `parser:" @@          "`
+	Body      Expression `parser:" ( '=' @@ )? "`
 }
 func (*Function) topLevel(){}
 func (this *Function) String () string {
@@ -58,10 +58,10 @@ func (this *Function) String () string {
 type Method struct {
 	// Syntax
 	Pos lexer.Position
-	Public    bool       `parser: " @'+'?       "`
-	TypeName  string     `parser: " @Ident      "`
-	Signature            `parser: " '.' @@      "`
-	Body      Expression `parser: " ( '=' @@ )? "`
+	Public    bool       `parser:" @'+'?       "`
+	TypeName  string     `parser:" @Ident      "`
+	Signature            `parser:" '.' @@      "`
+	Body      Expression `parser:" ( '=' @@ )? "`
 }
 func (*Method) topLevel(){}
 func (this *Method) String () string {

parser/tree.go

@@ -11,6 +11,7 @@ var parser = participle.MustBuild[Tree] (
 		&Typedef  { },
 		&Method   { }),
 	participle.Union[Type] (
+		&TypeNamed     { },
 		&TypePointer   { },
 		&TypeInterface { },
 		&TypeStruct    { },

parser/type.go

@@ -44,7 +44,7 @@ func (this *TypeArray) String () string {
 // are specified in. Structs are passed by value unless a pointer is used.
 type TypeStruct struct {
 	Pos lexer.Position
-	Members []*Declaration `parser:" '(' @@+ ')' `
+	Members []*Declaration `parser:" '(' @@+ ')' "`
 }
 func (*TypeStruct) ty(){}
 func (this *TypeStruct) String () string {