From 535d856a39b177642724bcfe6009985bf4262dbd Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Fri, 5 Aug 2016 15:03:14 +0200
Subject: o More flexible parsing. More rules needs to be updated.

---
 core/KicadNetLexer.g4        |  2 +-
 core/KicadNetParser.g4       |  2 +-
 core/README.md               | 10 ++++++++++
 core/include/trygvis/kicad.h |  3 +++
 core/kicad.cpp               | 18 ++++++++++++++----
 5 files changed, 29 insertions(+), 6 deletions(-)
 create mode 100644 core/README.md

(limited to 'core')

diff --git a/core/KicadNetLexer.g4 b/core/KicadNetLexer.g4
index e10f7e7..6d3ce95 100644
--- a/core/KicadNetLexer.g4
+++ b/core/KicadNetLexer.g4
@@ -26,7 +26,7 @@ STRING: '"' ~["]* '"';
 INTEGER: [0-9]+;
 
 ID
-    : [/+~\_\-\.\*\?/a-zA-Z0-9]+
+    : [/+~\_\-\.\*\?/a-zA-Z0-9:]+
     ;
 
 BlockComment
diff --git a/core/KicadNetParser.g4 b/core/KicadNetParser.g4
index 3971111..9914084 100644
--- a/core/KicadNetParser.g4
+++ b/core/KicadNetParser.g4
@@ -27,7 +27,7 @@ code:
     ;
 
 component:
-        '(' 'comp' ref value libsource keyValue* ')'
+        '(' 'comp' (ref | value | libsource | keyValue)* ')'
     ;
 
 field:
diff --git a/core/README.md b/core/README.md
new file mode 100644
index 0000000..585cca1
--- /dev/null
+++ b/core/README.md
@@ -0,0 +1,10 @@
+# Building
+
+    mkdir build
+    cd build
+    cmake .. \
+        -DAntlr4_DIR=$HOME/opt/antlr4-cpp/lib/cmake/Antlr4 \
+        -DCMAKE_INSTALL_PREFIX=$HOME/opt/kicad-utils \
+        -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=YES
+    make
+    make install
diff --git a/core/include/trygvis/kicad.h b/core/include/trygvis/kicad.h
index 0c5005d..bae250b 100644
--- a/core/include/trygvis/kicad.h
+++ b/core/include/trygvis/kicad.h
@@ -78,6 +78,9 @@ public:
     explicit kicad_parse_exception(const std::vector<std::string> &messages) :
         runtime_error("Parse error"), messages(messages) {}
 
+    explicit kicad_parse_exception(const std::string &message) :
+        runtime_error("Parse error"), messages({message}) {}
+
     ~kicad_parse_exception() {}
 
     const std::vector<std::string> messages;
diff --git a/core/kicad.cpp b/core/kicad.cpp
index 1a6ca2f..a553b62 100644
--- a/core/kicad.cpp
+++ b/core/kicad.cpp
@@ -112,12 +112,22 @@ public:
         nodes.emplace_back(ref, pin);
     }
 
+    template<typename T>
+    static
+    Ref<T> onlyOne(const vector<Ref<T>> items, const antlr4::ParserRuleContext *ctx, const string &parent, const string &item) {
+        if(items.size() != 1) {
+            throw kicad_parse_exception("Bad netlist: expected only one " + item + " inside of " + parent + ". Line: " + to_string(ctx->start->getLine()) + ":" + to_string(ctx->start->getCharPositionInLine()));
+        }
+        return items[0];
+    }
+
     virtual void exitComponent(KicadNetParser::ComponentContext *ctx) override {
-        auto ref = strings.get(ctx->ref()->string());
-        auto value = strings.get(ctx->value()->string());
+        auto ref = strings.get(onlyOne(ctx->ref(), ctx, "comp", "ref")->string());
+        auto value = strings.get(onlyOne(ctx->value(), ctx, "comp", "value")->string());
+        auto libsource = onlyOne(ctx->libsource(), ctx, "comp", "libsource");
 
-        lib_source ls{strings.get(ctx->libsource()->lib()->string()),
-                      strings.get(ctx->libsource()->part()->string())};
+        lib_source ls{strings.get(libsource->lib()->string()),
+                      strings.get(libsource->part()->string())};
 
         components.emplace_back(ref, value, ls);
     }
-- 
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