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Refactor classes representing individual characters & character classes

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This commit is contained in:
Max Brunsfeld 2013-12-21 23:53:26 -08:00
parent 8dec6c90f4
commit 9667b3fd6c
17 changed files with 167 additions and 120 deletions
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32
TreeSitter.xcodeproj/project.pbxproj
View file

@ -7,7 +7,7 @@
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@ -59,6 +57,8 @@
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@ -120,8 +120,6 @@
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@ -140,6 +138,8 @@
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@ -167,10 +167,8 @@
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1213060F182C3A1100FCF928 /* blank.cpp */,
12130610182C3A1100FCF928 /* blank.h */,
12130603182C348F00FCF928 /* char.cpp */,
12130604182C348F00FCF928 /* char.h */,
12F8BE8C183C79B2006CCF99 /* char_class.cpp */,
12F8BE8D183C79B2006CCF99 /* char_class.h */,
12130603182C348F00FCF928 /* character.cpp */,
12130604182C348F00FCF928 /* character.h */,
1213060C182C398300FCF928 /* choice.cpp */,
1213060D182C398300FCF928 /* choice.h */,
27A340F3EEB184C040521323 /* pattern.cpp */,
@ -306,6 +304,8 @@
12130618182C84B700FCF928 /* lr */,
12130602182C344400FCF928 /* rules */,
12C344421822F27700B07BE3 /* transition_map.h */,
12FD40F1186641C00041A84E /* char_match.cpp */,
12FD40F2186641C00041A84E /* char_match.h */,
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sourceTree = "<group>";
@ -433,7 +433,6 @@
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12F8BE8E183C79B2006CCF99 /* char_class.cpp in Sources */,
12130611182C3A1100FCF928 /* blank.cpp in Sources */,
1213060E182C398300FCF928 /* choice.cpp in Sources */,
12F9A64E182DD5FD00FAF50C /* spec_helper.cpp in Sources */,
@ -446,9 +445,10 @@
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12FD40D6185FEEDB0041A84E /* parse_table_builder_spec.cpp in Sources */,
12D136A4183678A2005F3369 /* repeat.cpp in Sources */,
12FD40F3186641C00041A84E /* char_match.cpp in Sources */,
12FD40E718639B910041A84E /* visitor.cpp in Sources */,
12130622182C85D300FCF928 /* item_set.cpp in Sources */,
12130605182C348F00FCF928 /* char.cpp in Sources */,
12130605182C348F00FCF928 /* character.cpp in Sources */,
1213060B182C389100FCF928 /* symbol.cpp in Sources */,
1251209B1830145300C9B56A /* rule.cpp in Sources */,
27A343CA69E17E0F9EBEDF1C /* pattern.cpp in Sources */,
@ -466,8 +466,8 @@
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12FD40B9185EEB5E0041A84E /* string.cpp in Sources */,
12FD40EF186641510041A84E /* transitions.cpp in Sources */,
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12FD40BD185EEB5E0041A84E /* choice.cpp in Sources */,
12FD40DF1860064C0041A84E /* tree.c in Sources */,
12FD40BF185EEB5E0041A84E /* c_code.cpp in Sources */,
@ -479,7 +479,7 @@
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12FD40C6185EEB5E0041A84E /* repeat.cpp in Sources */,
12FD40C7185EEB5E0041A84E /* item_set.cpp in Sources */,
12FD40C8185EEB5E0041A84E /* char.cpp in Sources */,
12FD40C8185EEB5E0041A84E /* character.cpp in Sources */,
12FD40C9185EEB5E0041A84E /* symbol.cpp in Sources */,
12FD40CA185EEB5E0041A84E /* rule.cpp in Sources */,
12FD40EE186641430041A84E /* rules.cpp in Sources */,

4
spec/compiler/lr/item_set_spec.cpp
View file

@ -47,8 +47,8 @@ Describe(item_sets) {
AssertThat(
set.char_transitions(grammar),
Equals(transition_map<rules::Rule, ItemSet>({
{ char_class(CharClassTypeWord), item_set({ Item("variable", choice({ repeat(char_class(CharClassTypeWord)), blank() }), 1) }) },
{ char_class(CharClassTypeDigit), item_set({ Item("number", choice({ repeat(char_class(CharClassTypeDigit)), blank() }), 1) }) },
{ character(CharClassWord), item_set({ Item("variable", choice({ repeat(character(CharClassWord)), blank() }), 1) }) },
{ character(CharClassDigit), item_set({ Item("number", choice({ repeat(character(CharClassDigit)), blank() }), 1) }) },
{ character('('), item_set({ Item("left_paren", blank(), 1) }) }
})));
}

4
spec/compiler/rules/pattern_spec.cpp
View file

@ -21,9 +21,9 @@ Describe(pattern_rules) {
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(seq({
char_class(CharClassTypeWord),
character(CharClassWord),
character('-'),
char_class(CharClassTypeDigit)
character(CharClassDigit)
})->to_string()));
};

2
spec/compiler/rules/rules_spec.cpp
View file

@ -44,7 +44,7 @@ Describe(Rules) {
}
It(handles_character_classes) {
auto rule = rules::char_class(rules::CharClassTypeDigit);
auto rule = rules::character(CharClassDigit);
AssertThat(
rules::transitions(rule),
Equals(transition_map<rules::Rule, rules::Rule>({

62
src/compiler/char_match.cpp Normal file
View file

@ -0,0 +1,62 @@
#include "char_match.h"
using std::string;
namespace tree_sitter {
CharMatch CharMatchSpecific(char value) {
CharMatch result = { .type = CharMatchTypeSpecific };
result.value.character = value;
return result;
}
CharMatch CharMatchClass(CharClass value) {
CharMatch result = { .type = CharMatchTypeSpecific };
result.value.character = value;
return result;
}
CharMatch CharMatchRange(char min, char max) {
CharMatch result = { .type = CharMatchTypeSpecific };
result.value.range.min_character = min;
result.value.range.max_character = max;
return result;
}
string CharMatchToString(CharMatch match) {
switch (match.type) {
case CharMatchTypeClass:
switch (match.value.character_class) {
case CharClassDigit:
return "<digit>";
case CharClassWord:
return "<word>";
}
case CharMatchTypeSpecific:
return string("'") + string(&match.value.character) + "'";
case CharMatchTypeRange:
return (
string("'") +
string(&match.value.range.min_character) + "-" +
string(&match.value.range.max_character) + "'");
}
}
bool operator==(const CharMatch &left, const CharMatch &right) {
if (left.type != right.type)
return false;
switch (left.type) {
case CharMatchTypeClass:
return (left.value.character_class == right.value.character_class);
case CharMatchTypeSpecific:
return (left.value.character == right.value.character);
case CharMatchTypeRange:
return (
left.value.range.min_character == right.value.range.min_character &&
left.value.range.max_character == right.value.range.max_character);
}
}
std::ostream& operator<<(std::ostream& stream, const CharMatch &match) {
return stream << CharMatchToString(match);
}
}

39
src/compiler/char_match.h Normal file
View file

@ -0,0 +1,39 @@
#ifndef __TreeSitter__char_match__
#define __TreeSitter__char_match__
#include <string>
namespace tree_sitter {
typedef enum {
CharMatchTypeSpecific,
CharMatchTypeClass,
CharMatchTypeRange,
} CharMatchType;
typedef enum {
CharClassWord,
CharClassDigit
} CharClass;
struct CharMatch {
CharMatchType type;
union {
CharClass character_class;
char character;
struct {
char min_character;
char max_character;
} range;
} value;
};
CharMatch CharMatchSpecific(char);
CharMatch CharMatchClass(CharClass);
CharMatch CharMatchRange(char, char);
std::string CharMatchToString(CharMatch);
bool operator==(const CharMatch &, const CharMatch &);
std::ostream& operator<<(std::ostream& stream, const CharMatch &rule);
}
#endif

23
src/compiler/rules/char.cpp
View file

@ -1,23 +0,0 @@
#include "rules.h"
#include "transition_map.h"
using std::string;
namespace tree_sitter {
namespace rules {
Char::Char(char value) : value(value) {};
bool Char::operator==(const Rule &rule) const {
const Char *other = dynamic_cast<const Char *>(&rule);
return other && (other->value == value);
}
string Char::to_string() const {
return string("'") + value + "'";
}
void Char::accept(Visitor &visitor) const {
visitor.visit(this);
}
}
}

28
src/compiler/rules/char_class.cpp
View file

@ -1,28 +0,0 @@
#include "rules.h"
#include "transition_map.h"
using std::string;
namespace tree_sitter {
namespace rules {
CharClass::CharClass(CharClassType value) : value(value) {};
bool CharClass::operator==(const Rule &rule) const {
const CharClass *other = dynamic_cast<const CharClass *>(&rule);
return other && (other->value == value);
}
string CharClass::to_string() const {
switch (value) {
case CharClassTypeDigit:
return "<digit>";
case CharClassTypeWord:
return "<word>";
}
}
void CharClass::accept(Visitor &visitor) const {
visitor.visit(this);
}
}
}

25
src/compiler/rules/char_class.h
View file

@ -1,25 +0,0 @@
#ifndef __tree_sitter__char_class__
#define __tree_sitter__char_class__
#include "rule.h"
namespace tree_sitter {
namespace rules {
typedef enum {
CharClassTypeWord,
CharClassTypeDigit
} CharClassType;
class CharClass : public Rule {
public:
CharClass(CharClassType type);
bool operator==(const Rule& other) const;
std::string to_string() const;
void accept(Visitor &visitor) const;
const CharClassType value;
};
}
}
#endif

25
src/compiler/rules/character.cpp Normal file
View file

@ -0,0 +1,25 @@
#include "rules.h"
#include "transition_map.h"
using std::string;
namespace tree_sitter {
namespace rules {
Character::Character(char value) : value(CharMatchSpecific(value)) {};
Character::Character(CharClass value) : value(CharMatchClass(value)) {};
Character::Character(char min, char max) : value(CharMatchRange(min, max)) {};
bool Character::operator==(const Rule &rule) const {
const Character *other = dynamic_cast<const Character *>(&rule);
return other && (other->value == value);
}
string Character::to_string() const {
return CharMatchToString(value);
}
void Character::accept(Visitor &visitor) const {
visitor.visit(this);
}
}
}

9
src/compiler/rules/char.h → src/compiler/rules/character.h
View file

@ -2,17 +2,20 @@
#define __tree_sitter__char__
#include "rule.h"
#include "char_match.h"
namespace tree_sitter {
namespace rules {
class Char : public Rule {
class Character : public Rule {
public:
Char(char value);
Character(char character);
Character(CharClass character_class);
Character(char min_character, char max_character);
bool operator==(const Rule& other) const;
std::string to_string() const;
void accept(Visitor &visitor) const;
const char value;
const CharMatch value;
};
}
}

4
src/compiler/rules/pattern.cpp
View file

@ -71,9 +71,9 @@ namespace tree_sitter {
case ')':
return character(value);
case 'w':
return char_class(CharClassTypeWord);
return character(CharClassWord);
case 'd':
return char_class(CharClassTypeDigit);
return character(CharClassDigit);
default:
error("unrecognized escape sequence");
return rule_ptr();

10
src/compiler/rules/rules.cpp
View file

@ -11,13 +11,13 @@ namespace tree_sitter {
}
rule_ptr character(char value) {
return make_shared<Char>(value);
return make_shared<Character>(value);
}
rule_ptr char_class(CharClassType type) {
return make_shared<CharClass>(type);
rule_ptr character(CharClass value) {
return make_shared<Character>(value);
}
rule_ptr choice(const initializer_list<rule_ptr> &rules) {
rule_ptr result;
for (auto rule : rules)

6
src/compiler/rules/rules.h
View file

@ -8,8 +8,7 @@
#include "seq.h"
#include "string.h"
#include "pattern.h"
#include "char.h"
#include "char_class.h"
#include "character.h"
#include "repeat.h"
#include "visitor.h"
@ -17,7 +16,8 @@ namespace tree_sitter {
namespace rules {
rule_ptr blank();
rule_ptr character(char value);
rule_ptr char_class(CharClassType value);
rule_ptr character(char min, char max);
rule_ptr character(CharClass value);
rule_ptr choice(const std::initializer_list<rule_ptr> &rules);
rule_ptr pattern(const std::string &value);
rule_ptr repeat(const rule_ptr content);

8
src/compiler/rules/transitions.cpp
View file

@ -11,12 +11,8 @@ namespace tree_sitter {
value = transition_map<Rule, Rule>();
}
void visit(const CharClass *rule) {
value = transition_map<Rule, Rule>({{ char_class(rule->value), blank() }});
}
void visit(const Char *rule) {
value = transition_map<Rule, Rule>({{ character(rule->value), blank() }});
void visit(const Character *rule) {
value = transition_map<Rule, Rule>({{ std::make_shared<Character>(*rule), blank() }});
}
void visit(const Symbol *rule) {

3
src/compiler/rules/visitor.cpp
View file

@ -4,8 +4,7 @@ namespace tree_sitter {
namespace rules {
void Visitor::visit(const Blank *rule) {}
void Visitor::visit(const Symbol *rule) {}
void Visitor::visit(const Char *rule) {}
void Visitor::visit(const CharClass *rule) {}
void Visitor::visit(const Character *rule) {}
void Visitor::visit(const Choice *rule) {}
void Visitor::visit(const Repeat *rule) {}
void Visitor::visit(const Seq *rule) {}

3
src/compiler/rules/visitor.h
View file

@ -9,8 +9,7 @@ namespace tree_sitter {
public:
virtual void visit(const Blank *rule);
virtual void visit(const Symbol *rule);
virtual void visit(const Char *rule);
virtual void visit(const CharClass *rule);
virtual void visit(const Character *rule);
virtual void visit(const Choice *rule);
virtual void visit(const Repeat *rule);
virtual void visit(const Seq *rule);