Creating an ANTLR grammar for Dart, potentially the syntax spec.

tools/spec_parser/Makefile

Index: tools/spec_parser/Makefile
diff --git a/tools/spec_parser/Makefile b/tools/spec_parser/Makefile
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+# Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+GRAMMAR=../../docs/language/Dart.g
+JAVA_PATH=/usr/lib/jvm/java-7-openjdk-amd64/bin
+JAVA=$(JAVA_PATH)/java
+JAVAC=javac
+ANTLR_JAR=/usr/share/java/antlr3-runtime.jar
+ANTLR_FILES=DartLexer.java DartParser.java Dart.tokens
+ANTLR_CMD=PATH=$(JAVA_PATH):$(PATH) antlr3 -dfa -fo . $<
+JAVA_FILES=DartLexer.java DartParser.java
+CLASS_FILES=SpecParser.class SpecParserRunner.class DartLexer.class DartParser.class
+
+.PHONY: default parser clean touch parse_hello
+
+default: $(JAVA_FILES)
+
+parser: SpecParser.class
+
+SpecParser.class: $(ANTLR_FILES) SpecParser.java
+	$(JAVAC) -cp .:$(ANTLR_JAR) SpecParser.java
+
+%Lexer.java: ../../docs/language/%.g Makefile ; $(ANTLR_CMD)
+
+%Parser.java: ../../docs/language/%.g Makefile ; $(ANTLR_CMD)
+
+%.tokens: ../../docs/language/%.g Makefile ; $(ANTLR_CMD)
+
+clean:
+	rm -f $(CLASS_FILES) $(ANTLR_FILES)
+
+touch:
+	touch $(GRAMMAR)