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smarter Makefile, fixed grammar

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git-svn-id: svn://anubis/gvsu@113 45c1a28c-8058-47b2-ae61-ca45b979098e
This commit is contained in:
josh 2008-06-01 19:18:51 +00:00
parent b6a5a19e1e
commit daae9b09b4
3 changed files with 9 additions and 7 deletions
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9
cs675/bottomup/Makefile
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@ -1,12 +1,13 @@
PKG := jholtrop.gvsu.cs675.bottomup PKG := jholtrop.gvsu.cs675.bottomup
PKGPATH := $(subst .,/,$(PKG)) PKGPATH := $(subst .,/,$(PKG))
PARSER := $(PKGPATH)/parser/Parser.java
GRAMMAR := arithmetic.grammar
all: sablecc prog all: $(PARSER) prog
.PHONY: sablecc $(PARSER): $(GRAMMAR)
sablecc: sablecc $(GRAMMAR)
sablecc arithmetic.grammar
.PHONY: prog .PHONY: prog
prog: prog:

5
cs675/bottomup/arithmetic.grammar
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@ -3,7 +3,7 @@ Package jholtrop.gvsu.cs675.bottomup;
Tokens Tokens
blank = (' ' | 9 | 10 | 13); blank = (' ' | 9 | 10 | 13);
number = ['0' .. '9']+ ('.' ['0' .. '9']+)?; number = ['0' .. '9']+;
plus = '+'; plus = '+';
minus = '-'; minus = '-';
multiply = '*'; multiply = '*';
@ -22,7 +22,8 @@ Productions
term = term =
{multiplication} term multiply factor | {multiplication} term multiply factor |
{division} term divide factor; {division} term divide factor |
{factor} factor;
factor = factor =
{number} number | {number} number |

2
cs675/bottomup/jholtrop/gvsu/cs675/bottomup/Evaluator.java
View File

@ -26,7 +26,7 @@ public class Evaluator
} }
catch (Exception e) catch (Exception e)
{ {
System.out.println(e.getMessage()); System.out.println("Error: " + e.getMessage());
} }
} }
} }