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Support arbitrary characters in identifiers and tracing.

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This commit is contained in:
Wilson Snyder
2008-09-17 22:22:46 -04:00
parent 6aaef67e73
commit 22543f3e19
5 changed files with 139 additions and 31 deletions
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src/V3Ast.cpp
+51 -18
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@@ -85,12 +85,27 @@ void AstNode::init() {
string AstNode::encodeName(const string& namein) {
string name2 = namein;
string out;
for (string::iterator pos = name2.begin(); pos != name2.end(); pos++) {
if (pos[0]=='_' && pos[1]=='_') {
out += "__ULUL_";
pos++;
} else {
const char* start = name2.c_str();
for (const char* pos = start; *pos; pos++) {
if ((pos==start) ? isalpha(pos[0]) // digits can't lead identifiers
: isalnum(pos[0])) {
out += pos[0];
} else if (pos[0]=='_') {
if (pos[1]=='_') {
out += "_"; out += "__5F"; // hex(_) = 0x5F
pos++;
} else {
out += pos[0];
}
} else if (pos[0]=='.') {
out += "__DOT__";
} else if (pos[0]=='[') {
out += "__BRA__";
} else if (pos[0]==']') {
out += "__KET__";
} else {
char hex[10]; sprintf(hex,"%02X",pos[0]);
out += "__"; out += hex;
}
}
return out;
@@ -116,19 +131,37 @@ string AstNode::dedotName(const string& namein) {
}
string AstNode::prettyName(const string& namein) {
string pretty = namein;
string::size_type pos;
while ((pos=pretty.find("__BRA__")) != string::npos) {
pretty.replace(pos, 7, "[");
}
while ((pos=pretty.find("__KET__")) != string::npos) {
pretty.replace(pos, 7, "]");
}
while ((pos=pretty.find("__PVT__")) != string::npos) {
pretty.replace(pos, 7, "");
}
while ((pos=pretty.find("__ULUL_")) != string::npos) {
pretty.replace(pos, 7, "");
string pretty;
string name2 = namein;
pretty = "";
for (const char* pos = name2.c_str(); *pos; ) {
if (0==strncmp(pos,"__BRA__",7)) {
pretty += "[";
pos += 7;
}
else if (0==strncmp(pos,"__KET__",7)) {
pretty += "]";
pos += 7;
}
else if (0==strncmp(pos,"__DOT__",7)) {
pretty += ".";
pos += 7;
}
else if (0==strncmp(pos,"__PVT__",7)) {
pretty += "";
pos += 7;
}
else if (pos[0]=='_' && pos[1]=='_' && isxdigit(pos[2]) && isxdigit(pos[3])) {
char value = 0;
value += 16*(isdigit(pos[2]) ? (pos[2]-'0') : (tolower(pos[2])-'a'+10));
value += (isdigit(pos[3]) ? (pos[3]-'0') : (tolower(pos[3])-'a'+10));
pretty += value;
pos += 4;
}
else {
pretty += pos[0];
pos++;
}
}
return AstNode::dedotName(pretty);
}