add ParseDeclList

R=austin
DELTA=34  (34 added, 0 deleted, 0 changed)
OCL=34280
CL=34352

src/pkg/go/parser/interface.go

@@ -8,9 +8,11 @@ package parser
 
 import (
 	"bytes";
+	"container/vector";
 	"fmt";
 	"go/ast";
 	"go/scanner";
+	"go/token";
 	"io";
 	"os";
 	pathutil "path";
@@ -86,6 +88,24 @@ func ParseStmtList(filename string, src interface{}) ([]ast.Stmt, os.Error) {
 }
 
 
+// ParseDeclList parses a list of Go declarations and returns the list
+// of corresponding AST nodes.  The filename and src arguments have the same
+// interpretation as for ParseFile. If there is an error, the node
+// list may be nil or contain partial ASTs.
+//
+func ParseDeclList(filename string, src interface{}) ([]ast.Decl, os.Error) {
+	data, err := readSource(filename, src);
+	if err != nil {
+		return nil, err;
+	}
+
+	var p parser;
+	p.init(filename, data, 0);
+	list := p.parseDeclList();  // TODO 6g bug - function call order in expr lists
+	return list, p.GetError(scanner.Sorted);
+}
+
+
 // ParseFile parses a Go source file and returns a File node.
 //
 // If src != nil, ParseFile parses the file source from src. src may

src/pkg/go/parser/parser.go

@@ -1889,6 +1889,20 @@ func (p *parser) parseDecl(getSemi bool) (decl ast.Decl, gotSemi bool) {
 }
 
 
+func (p *parser) parseDeclList() []ast.Decl {
+	var list vector.Vector;
+	for p.tok != token.EOF {
+		decl, _ := p.parseDecl(true);	// consume optional semicolon
+		list.Push(decl);
+	}
+	decls := make([]ast.Decl, list.Len());
+	for i := 0; i < list.Len(); i++ {
+		decls[i] = list.At(i).(ast.Decl);
+	}
+	return decls;
+}
+
+
 // ----------------------------------------------------------------------------
 // Source files