mirror of
https://github.com/sigmasternchen/sh.js
synced 2025-03-15 07:28:55 +00:00
created namespace for ast related constructors
This commit is contained in:
overflowerror
parent
741ff1c347
commit
333eb79820
1 changed files with 122 additions and 119 deletions
241
interpreter.js
241
interpreter.js
|
|
@ -4,111 +4,114 @@
|
|||
var functions = [];
|
||||
var file = "[anonymous]";
|
||||
|
||||
|
||||
function executeCommand(args, std) {
|
||||
console.log(`args: ${args}, std: ${std}`);
|
||||
}
|
||||
|
||||
function astSequence() {
|
||||
let commands = [];
|
||||
return {
|
||||
add: c => commands.push(c),
|
||||
execute: (std) => commands.forEach(c => c.execute(std)),
|
||||
toString: () => "sequence {\n" + commands
|
||||
.map(c => c.toString())
|
||||
.map(s => s.split("\n"))
|
||||
.map(a => a.map(s => " " + s))
|
||||
.map(a => a.join("\n"))
|
||||
.join(",\n") + "\n}",
|
||||
}
|
||||
}
|
||||
const ast = {
|
||||
sequence: function() {
|
||||
let commands = [];
|
||||
return {
|
||||
add: c => commands.push(c),
|
||||
execute: (std) => commands.forEach(c => c.execute(std)),
|
||||
toString: () => "sequence {\n" + commands
|
||||
.map(c => c.toString())
|
||||
.map(s => s.split("\n"))
|
||||
.map(a => a.map(s => " " + s))
|
||||
.map(a => a.join("\n"))
|
||||
.join(",\n") + "\n}",
|
||||
}
|
||||
},
|
||||
|
||||
function astCommand() {
|
||||
let args = [];
|
||||
return {
|
||||
add: a => args.push(a),
|
||||
size: a => args.length,
|
||||
execute: (std) => {
|
||||
let evaluatedArgs = args.map(a => a.evaluate());
|
||||
executeCommand(evaluatedArgs, std);
|
||||
command: function() {
|
||||
let args = [];
|
||||
return {
|
||||
add: a => args.push(a),
|
||||
size: a => args.length,
|
||||
execute: (std) => {
|
||||
let evaluatedArgs = args.map(a => a.evaluate());
|
||||
executeCommand(evaluatedArgs, std);
|
||||
},
|
||||
toString: () => "command {\n" + args
|
||||
.map(a => a.toString())
|
||||
.map(s => s.split("\n"))
|
||||
.map(a => a.map(s => " " + s))
|
||||
.map(a => a.join("\n"))
|
||||
.join(",\n") + "\n}",
|
||||
};
|
||||
},
|
||||
|
||||
assignment: function(name) {
|
||||
let value = ast.value.string("");
|
||||
return {
|
||||
setValue: v => { value = v; },
|
||||
execute: (std) => {
|
||||
variables[name] = value.evaluate();
|
||||
},
|
||||
toString: () => `assign '${name}'=\n${value.toString().split('\n').map(l => " " + l).join("\n")}`,
|
||||
};
|
||||
},
|
||||
|
||||
value: {
|
||||
compound: function() {
|
||||
let components = [];
|
||||
const self = {
|
||||
add: c => components.push(c),
|
||||
evaluate: () => components.map(c => c.evaluate()).join(""),
|
||||
toString: () => "compound {\n" + components
|
||||
.map(a => a.toString())
|
||||
.map(s => s.split("\n"))
|
||||
.map(a => a.map(s => " " + s))
|
||||
.map(a => a.join("\n"))
|
||||
.join(",\n") + "\n}",
|
||||
reduce: () => {
|
||||
if (components.length == 1) {
|
||||
if (components[0].reduce) {
|
||||
return components[0].reduce();
|
||||
} else {
|
||||
return components[0];
|
||||
}
|
||||
} else {
|
||||
return self;
|
||||
}
|
||||
},
|
||||
};
|
||||
return self;
|
||||
},
|
||||
toString: () => "command {\n" + args
|
||||
.map(a => a.toString())
|
||||
.map(s => s.split("\n"))
|
||||
.map(a => a.map(s => " " + s))
|
||||
.map(a => a.join("\n"))
|
||||
.join(",\n") + "\n}",
|
||||
};
|
||||
}
|
||||
|
||||
function astAssignment(name) {
|
||||
let value = astValueString("");
|
||||
return {
|
||||
setValue: v => { value = v; },
|
||||
execute: (std) => {
|
||||
variables[name] = value.evaluate();
|
||||
string: function(str) {
|
||||
return {
|
||||
evaluate: () => str,
|
||||
toString: () => "'" + str + "'",
|
||||
};
|
||||
},
|
||||
toString: () => `assign '${name}'=\n${value.toString().split('\n').map(l => " " + l).join("\n")}`,
|
||||
};
|
||||
}
|
||||
|
||||
function astValueCompound() {
|
||||
let components = [];
|
||||
const self = {
|
||||
add: c => components.push(c),
|
||||
evaluate: () => components.map(c => c.evaluate()).join(""),
|
||||
toString: () => "compound {\n" + components
|
||||
.map(a => a.toString())
|
||||
.map(s => s.split("\n"))
|
||||
.map(a => a.map(s => " " + s))
|
||||
.map(a => a.join("\n"))
|
||||
.join(",\n") + "\n}",
|
||||
reduce: () => {
|
||||
if (components.length == 1) {
|
||||
if (components[0].reduce) {
|
||||
return components[0].reduce();
|
||||
} else {
|
||||
return components[0];
|
||||
}
|
||||
} else {
|
||||
return self;
|
||||
variable: function(name) {
|
||||
return {
|
||||
// add support for multiple arguments in one variable
|
||||
evaluate: () => variables[name],
|
||||
toString: () => `var '${name}'`,
|
||||
}
|
||||
},
|
||||
};
|
||||
return self;
|
||||
}
|
||||
|
||||
function astValueString(str) {
|
||||
return {
|
||||
evaluate: () => str,
|
||||
toString: () => "'" + str + "'",
|
||||
};
|
||||
}
|
||||
|
||||
function astValueVar(name) {
|
||||
return {
|
||||
// add support for multiple arguments in one variable
|
||||
evaluate: () => variables[name],
|
||||
toString: () => `var '${name}'`,
|
||||
}
|
||||
}
|
||||
|
||||
function astValueCommandSubstitution(ast) {
|
||||
return {
|
||||
evaluate: () => {
|
||||
// TODO
|
||||
commandSubstitution: function(ast) {
|
||||
return {
|
||||
evaluate: () => {
|
||||
// TODO
|
||||
},
|
||||
toString: () => "not implemented",
|
||||
};
|
||||
},
|
||||
toString: () => "not implemented",
|
||||
};
|
||||
}
|
||||
|
||||
function astValueProcessSubstitution(ast) {
|
||||
return {
|
||||
evaluate: () => {
|
||||
// TODO
|
||||
processSubstitution: function(ast) {
|
||||
return {
|
||||
evaluate: () => {
|
||||
// TODO
|
||||
},
|
||||
toString: () => "not implemented",
|
||||
};
|
||||
},
|
||||
toString: () => "not implemented",
|
||||
};
|
||||
},
|
||||
}
|
||||
|
||||
function panic(line, message) {
|
||||
|
|
@ -172,7 +175,7 @@
|
|||
function doubleQuoteToAst(quoteContent, line) {
|
||||
const length = quoteContent.length;
|
||||
|
||||
let astRoot = astValueCompound();
|
||||
let astRoot = ast.value.compound();
|
||||
|
||||
let buffer = "";
|
||||
|
||||
|
|
@ -189,7 +192,7 @@
|
|||
switch(state) {
|
||||
case QS_INIT:
|
||||
if (c == '$') {
|
||||
astRoot.add(astValueString(buffer));
|
||||
astRoot.add(ast.value.string(buffer));
|
||||
buffer = "";
|
||||
if (i < length - 1 && quoteContent[i + 1] == '(') {
|
||||
state = QS_SUBSTITUTION;
|
||||
|
|
@ -203,7 +206,7 @@
|
|||
break;
|
||||
case QS_VARIABLE:
|
||||
if (!("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".includes(c))) {
|
||||
astRoot.add(astValueVar(buffer));
|
||||
astRoot.add(ast.value.variable(buffer));
|
||||
buffer = "";
|
||||
state = QS_INIT;
|
||||
i--;
|
||||
|
|
@ -223,10 +226,10 @@
|
|||
if (buffer) {
|
||||
switch(state) {
|
||||
case QS_INIT:
|
||||
astRoot.add(astValueString(buffer));
|
||||
astRoot.add(ast.value.string(buffer));
|
||||
break;
|
||||
case QS_VARIABLE:
|
||||
astRoot.add(astValueVar(buffer));
|
||||
astRoot.add(ast.value.variable(buffer));
|
||||
break;
|
||||
case QS_SUBSTITUTION:
|
||||
throw "not implemented";
|
||||
|
|
@ -248,7 +251,7 @@
|
|||
const PS_COMMAND = 1;
|
||||
const PS_ASSIGN = 2;
|
||||
|
||||
let astRoot = astSequence();
|
||||
let astRoot = ast.sequence();
|
||||
let current = null;
|
||||
let value = null;
|
||||
|
||||
|
|
@ -265,7 +268,7 @@
|
|||
} else if (c == '#') {
|
||||
state = PS_COMMENT;
|
||||
} else {
|
||||
current = astCommand();
|
||||
current = ast.command();
|
||||
buffer = c;
|
||||
state = PS_COMMAND;
|
||||
}
|
||||
|
|
@ -281,9 +284,9 @@
|
|||
if (value) {
|
||||
if (buffer) {
|
||||
if (buffer[0] == '$') {
|
||||
value.add(astValueVar(buffer.substring(1)));
|
||||
value.add(ast.value.variable(buffer.substring(1)));
|
||||
} else {
|
||||
value.add(astValueString(buffer.replaceAll('\\$', '$')));
|
||||
value.add(ast.value.string(buffer.replaceAll('\\$', '$')));
|
||||
}
|
||||
buffer = "";
|
||||
}
|
||||
|
|
@ -291,9 +294,9 @@
|
|||
value = null;
|
||||
} else if (buffer) {
|
||||
if (buffer[0] == '$') {
|
||||
current.add(astValueVar(buffer.substring(1)));
|
||||
current.add(ast.value.variable(buffer.substring(1)));
|
||||
} else {
|
||||
current.add(astValueString(buffer.replaceAll('\\$', '$')));
|
||||
current.add(ast.value.string(buffer.replaceAll('\\$', '$')));
|
||||
}
|
||||
buffer = "";
|
||||
}
|
||||
|
|
@ -304,9 +307,9 @@
|
|||
if (value) {
|
||||
if (buffer) {
|
||||
if (buffer[0] == '$') {
|
||||
value.add(astValueVar(buffer.substring(1)));
|
||||
value.add(ast.value.variable(buffer.substring(1)));
|
||||
} else {
|
||||
value.add(astValueString(buffer.replaceAll('\\$', '$')));
|
||||
value.add(ast.value.string(buffer.replaceAll('\\$', '$')));
|
||||
}
|
||||
buffer = "";
|
||||
}
|
||||
|
|
@ -314,26 +317,26 @@
|
|||
value = null;
|
||||
} else if (buffer) {
|
||||
if (buffer[0] == '$') {
|
||||
current.add(astValueVar(buffer.substring(1)));
|
||||
current.add(ast.value.variable(buffer.substring(1)));
|
||||
} else {
|
||||
current.add(astValueString(buffer.replaceAll('\\$', '$')));
|
||||
current.add(ast.value.string(buffer.replaceAll('\\$', '$')));
|
||||
}
|
||||
buffer = "";
|
||||
}
|
||||
} else if (c == '"') {
|
||||
if (!value) {
|
||||
value = astValueCompound();
|
||||
value = ast.value.compound();
|
||||
}
|
||||
if (buffer) {
|
||||
value.add(astValueString(buffer));
|
||||
value.add(ast.value.string(buffer));
|
||||
buffer = "";
|
||||
}
|
||||
|
||||
const end = findSymbolInScope(content, line, '"', i + 1, length);
|
||||
const [ast, _line] = doubleQuoteToAst(content.substring(i + 1, end), line);
|
||||
const [_ast, _line] = doubleQuoteToAst(content.substring(i + 1, end), line);
|
||||
line = _line;
|
||||
|
||||
value.add(ast);
|
||||
value.add(_ast);
|
||||
|
||||
i = end;
|
||||
} else if (c == "'") {
|
||||
|
|
@ -345,7 +348,7 @@
|
|||
}
|
||||
i = end;
|
||||
} else if (c == '=' && current.size() == 0) {
|
||||
current = astAssignment(buffer);
|
||||
current = ast.assignment(buffer);
|
||||
state = PS_ASSIGN;
|
||||
buffer = "";
|
||||
} else {
|
||||
|
|
@ -358,21 +361,21 @@
|
|||
if (value) {
|
||||
if (buffer) {
|
||||
if (buffer[0] == "$") {
|
||||
value.add(astValueVar(buffer.substring(1)));
|
||||
value.add(ast.value.variable(buffer.substring(1)));
|
||||
} else {
|
||||
value.add(astValueString(buffer));
|
||||
value.add(ast.value.string(buffer));
|
||||
}
|
||||
}
|
||||
current.setValue(value.reduce());
|
||||
value = null;
|
||||
} else if (buffer) {
|
||||
if (buffer[0] == "$") {
|
||||
current.setValue(astValueVar(buffer.substring(1)));
|
||||
current.setValue(ast.value.variable(buffer.substring(1)));
|
||||
} else {
|
||||
current.setValue(astValueString(buffer));
|
||||
current.setValue(ast.value.string(buffer));
|
||||
}
|
||||
} else {
|
||||
current.setValue(astValueString(""));
|
||||
current.setValue(ast.value.string(""));
|
||||
}
|
||||
buffer = "";
|
||||
astRoot.add(current);
|
||||
|
|
@ -380,18 +383,18 @@
|
|||
state = PS_INIT;
|
||||
} else if (c == '"') {
|
||||
if (!value) {
|
||||
value = astValueCompound();
|
||||
value = ast.value.compound();
|
||||
}
|
||||
if (buffer) {
|
||||
value.add(astValueString(buffer));
|
||||
value.add(ast.value.string(buffer));
|
||||
buffer = "";
|
||||
}
|
||||
|
||||
const end = findSymbolInScope(content, line, '"', i + 1, length);
|
||||
const [ast, _line] = doubleQuoteToAst(content.substring(i + 1, end), line);
|
||||
const [_ast, _line] = doubleQuoteToAst(content.substring(i + 1, end), line);
|
||||
line = _line;
|
||||
|
||||
value.add(ast);
|
||||
value.add(_ast);
|
||||
|
||||
i = end;
|
||||
} else if (c == "'") {
|
||||
|
|
|
|||
Loading…
Reference in a new issue